-
-# HG changeset patch
-# User Emilio Cobos Álvarez <emilio@crisal.io>
-# Date 1599584448 0
-# Node ID 85c38ea4d34969797eb5d24265cd90cc6841e6ae
-# Parent 5aa243a2fe9d77578dd95ce3ab3a2aa6c1e92604
-Bug 1663715 - Update syn and proc-macro2 so that Firefox can build on Rust nightly again. r=froydnj, a=RyanVM
-
-Generated with:
-
- cargo update -p syn --precise 1.0.40
- ./mach vendor rust
-
-Rust issue: https://github.com/rust-lang/rust/issues/76482
-
-Differential Revision: https://phabricator.services.mozilla.com/D89473
-
-diff --git a/Cargo.lock b/Cargo.lock
---- a/Cargo.lock
-+++ b/Cargo.lock
-@@ -3712,19 +3712,19 @@ checksum = "ecd45702f76d6d3c75a80564378a
- dependencies = [
- "proc-macro2",
- "quote",
- "syn",
- ]
-
- [[package]]
- name = "proc-macro2"
--version = "1.0.5"
--source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "90cf5f418035b98e655e9cdb225047638296b862b42411c4e45bb88d700f7fc0"
-+version = "1.0.20"
-+source = "registry+https://github.com/rust-lang/crates.io-index"
-+checksum = "175c513d55719db99da20232b06cda8bab6b83ec2d04e3283edf0213c37c1a29"
- dependencies = [
- "unicode-xid",
- ]
-
- [[package]]
- name = "procedural-masquerade"
- version = "0.1.1"
- source = "registry+https://github.com/rust-lang/crates.io-index"
-@@ -4642,19 +4642,19 @@ dependencies = [
- "cc",
- "gleam",
- "glsl-to-cxx",
- "webrender_build",
- ]
-
- [[package]]
- name = "syn"
--version = "1.0.5"
--source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "66850e97125af79138385e9b88339cbcd037e3f28ceab8c5ad98e64f0f1f80bf"
-+version = "1.0.40"
-+source = "registry+https://github.com/rust-lang/crates.io-index"
-+checksum = "963f7d3cc59b59b9325165add223142bbf1df27655d07789f109896d353d8350"
- dependencies = [
- "proc-macro2",
- "quote",
- "unicode-xid",
- ]
-
- [[package]]
- name = "sync-guid"
-diff --git a/third_party/rust/proc-macro2/.cargo-checksum.json b/third_party/rust/proc-macro2/.cargo-checksum.json
---- a/third_party/rust/proc-macro2/.cargo-checksum.json
-+++ b/third_party/rust/proc-macro2/.cargo-checksum.json
-@@ -1,1 +1,1 @@
--{"files":{"Cargo.toml":"e2c1fc6ed317eeef8462fcd192f6b6389e1d84f0d7afeac78f12c23903deddf8","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"378f5840b258e2779c39418f3f2d7b2ba96f1c7917dd6be0713f88305dbda397","README.md":"362a2156f7645528061b6e8487a2eb0f32f1693012ed82ee57afa05c039bba0d","build.rs":"0cc6e2cb919ddbff59cf1d810283939f97a59f0037540c0f2ee3453237635ff8","src/fallback.rs":"5c6379a90735e27abcc40253b223158c6b1e5784f3850bc423335363e87ef038","src/lib.rs":"ae5251296ad3fcd8b600919a993fec0afd8b56da3e11fef6bc7265b273129936","src/strnom.rs":"37f7791f73f123817ad5403af1d4e2a0714be27401729a2d451bc80b1f26bac9","src/wrapper.rs":"81372e910604217a625aa71c47d43e65f4e008456eae93ac39325c9abf10701a","tests/features.rs":"a86deb8644992a4eb64d9fd493eff16f9cf9c5cb6ade3a634ce0c990cf87d559","tests/marker.rs":"c2652e3ae1dfcb94d2e6313b29712c5dcbd0fe62026913e67bb7cebd7560aade","tests/test.rs":"8c427be9cba1fa8d4a16647e53e3545e5863e29e2c0b311c93c9dd1399abf6a1"},"package":"90cf5f418035b98e655e9cdb225047638296b862b42411c4e45bb88d700f7fc0"}
-\ No newline at end of file
-+{"files":{"Cargo.toml":"c20c4c52342e65ea11ad8382edc636e628e8f8c5ab7cffddc32426b2fe8fe4cd","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"378f5840b258e2779c39418f3f2d7b2ba96f1c7917dd6be0713f88305dbda397","README.md":"e1f9d4fc22cff2c049f166a403b41458632a94357890d31cf0e3ad83807fb430","build.rs":"332185d7ad4c859210f5edd7a76bc95146c8277726a2f81417f34927c4424d68","src/detection.rs":"9d25d896889e65330858f2d6f6223c1b98cd1dad189813ad4161ff189fbda2b8","src/fallback.rs":"239f9a25c0f2ab57592288d944c7f1a0f887536b6d4dc2428a17640af8d10a41","src/lib.rs":"2b1d98424c9b23b547dabf85554120e5e65472026a0f3f711b3a097bca7c32fe","src/parse.rs":"500edee9773132e27e44d0fdaa042b1cb9451e29e65124493986f51710c0664c","src/wrapper.rs":"d36c0dced7ec0e7585c1f935cda836080bcae6de1de3d7851d962e9e11a3ac48","tests/comments.rs":"ea6cbe6f4c8852e6a0612893c7d4f2c144a2e6a134a6c3db641a320cbfc3c800","tests/features.rs":"a86deb8644992a4eb64d9fd493eff16f9cf9c5cb6ade3a634ce0c990cf87d559","tests/marker.rs":"c2652e3ae1dfcb94d2e6313b29712c5dcbd0fe62026913e67bb7cebd7560aade","tests/test.rs":"310c856e27ff61c9ec7f0a5cd96031aac02971557b1621f5e17b089d58e79bcd","tests/test_fmt.rs":"745dfdc41d09c5308c221395eb43f2041f0a1413d2927a813bc2ad4554438fe2"},"package":"175c513d55719db99da20232b06cda8bab6b83ec2d04e3283edf0213c37c1a29"}
-\ No newline at end of file
-diff --git a/third_party/rust/proc-macro2/Cargo.toml b/third_party/rust/proc-macro2/Cargo.toml
---- a/third_party/rust/proc-macro2/Cargo.toml
-+++ b/third_party/rust/proc-macro2/Cargo.toml
-@@ -8,36 +8,35 @@
- # If you believe there's an error in this file please file an
- # issue against the rust-lang/cargo repository. If you're
- # editing this file be aware that the upstream Cargo.toml
- # will likely look very different (and much more reasonable)
-
- [package]
- edition = "2018"
- name = "proc-macro2"
--version = "1.0.5"
--authors = ["Alex Crichton <alex@alexcrichton.com>"]
--description = "A stable implementation of the upcoming new `proc_macro` API. Comes with an\noption, off by default, to also reimplement itself in terms of the upstream\nunstable API.\n"
--homepage = "https://github.com/alexcrichton/proc-macro2"
-+version = "1.0.20"
-+authors = ["Alex Crichton <alex@alexcrichton.com>", "David Tolnay <dtolnay@gmail.com>"]
-+description = "A substitute implementation of the compiler's `proc_macro` API to decouple\ntoken-based libraries from the procedural macro use case.\n"
- documentation = "https://docs.rs/proc-macro2"
- readme = "README.md"
- keywords = ["macros"]
-+categories = ["development-tools::procedural-macro-helpers"]
- license = "MIT OR Apache-2.0"
- repository = "https://github.com/alexcrichton/proc-macro2"
- [package.metadata.docs.rs]
- rustc-args = ["--cfg", "procmacro2_semver_exempt"]
- rustdoc-args = ["--cfg", "procmacro2_semver_exempt"]
-+targets = ["x86_64-unknown-linux-gnu"]
-
--[lib]
--name = "proc_macro2"
-+[package.metadata.playground]
-+features = ["span-locations"]
- [dependencies.unicode-xid]
- version = "0.2"
- [dev-dependencies.quote]
- version = "1.0"
- default_features = false
-
- [features]
- default = ["proc-macro"]
- nightly = []
- proc-macro = []
- span-locations = []
--[badges.travis-ci]
--repository = "alexcrichton/proc-macro2"
-diff --git a/third_party/rust/proc-macro2/README.md b/third_party/rust/proc-macro2/README.md
---- a/third_party/rust/proc-macro2/README.md
-+++ b/third_party/rust/proc-macro2/README.md
-@@ -1,11 +1,11 @@
- # proc-macro2
-
--[](https://travis-ci.com/alexcrichton/proc-macro2)
-+[](https://github.com/alexcrichton/proc-macro2/actions)
- [](https://crates.io/crates/proc-macro2)
- [](https://docs.rs/proc-macro2)
-
- A wrapper around the procedural macro API of the compiler's `proc_macro` crate.
- This library serves two purposes:
-
- - **Bring proc-macro-like functionality to other contexts like build.rs and
- main.rs.** Types from `proc_macro` are entirely specific to procedural macros
-diff --git a/third_party/rust/proc-macro2/build.rs b/third_party/rust/proc-macro2/build.rs
---- a/third_party/rust/proc-macro2/build.rs
-+++ b/third_party/rust/proc-macro2/build.rs
-@@ -9,16 +9,20 @@
- // "wrap_proc_macro"
- // Wrap types from libproc_macro rather than polyfilling the whole API.
- // Enabled on rustc 1.29+ as long as procmacro2_semver_exempt is not set,
- // because we can't emulate the unstable API without emulating everything
- // else. Also enabled unconditionally on nightly, in which case the
- // procmacro2_semver_exempt surface area is implemented by using the
- // nightly-only proc_macro API.
- //
-+// "hygiene"
-+// Enable Span::mixed_site() and non-dummy behavior of Span::resolved_at
-+// and Span::located_at. Enabled on Rust 1.45+.
-+//
- // "proc_macro_span"
- // Enable non-dummy behavior of Span::start and Span::end methods which
- // requires an unstable compiler feature. Enabled when building with
- // nightly, unless `-Z allow-feature` in RUSTFLAGS disallows unstable
- // features.
- //
- // "super_unstable"
- // Implement the semver exempt API in terms of the nightly-only proc_macro
-@@ -52,16 +56,24 @@ fn main() {
- // https://github.com/alexcrichton/proc-macro2/issues/147
- println!("cargo:rustc-cfg=procmacro2_semver_exempt");
- }
-
- if semver_exempt || cfg!(feature = "span-locations") {
- println!("cargo:rustc-cfg=span_locations");
- }
-
-+ if version.minor < 39 {
-+ println!("cargo:rustc-cfg=no_bind_by_move_pattern_guard");
-+ }
-+
-+ if version.minor >= 45 {
-+ println!("cargo:rustc-cfg=hygiene");
-+ }
-+
- let target = env::var("TARGET").unwrap();
- if !enable_use_proc_macro(&target) {
- return;
- }
-
- println!("cargo:rustc-cfg=use_proc_macro");
-
- if version.nightly || !semver_exempt {
-diff --git a/third_party/rust/proc-macro2/src/detection.rs b/third_party/rust/proc-macro2/src/detection.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/proc-macro2/src/detection.rs
-@@ -0,0 +1,67 @@
-+use std::panic::{self, PanicInfo};
-+use std::sync::atomic::*;
-+use std::sync::Once;
-+
-+static WORKS: AtomicUsize = AtomicUsize::new(0);
-+static INIT: Once = Once::new();
-+
-+pub(crate) fn inside_proc_macro() -> bool {
-+ match WORKS.load(Ordering::SeqCst) {
-+ 1 => return false,
-+ 2 => return true,
-+ _ => {}
-+ }
-+
-+ INIT.call_once(initialize);
-+ inside_proc_macro()
-+}
-+
-+pub(crate) fn force_fallback() {
-+ WORKS.store(1, Ordering::SeqCst);
-+}
-+
-+pub(crate) fn unforce_fallback() {
-+ initialize();
-+}
-+
-+// Swap in a null panic hook to avoid printing "thread panicked" to stderr,
-+// then use catch_unwind to determine whether the compiler's proc_macro is
-+// working. When proc-macro2 is used from outside of a procedural macro all
-+// of the proc_macro crate's APIs currently panic.
-+//
-+// The Once is to prevent the possibility of this ordering:
-+//
-+// thread 1 calls take_hook, gets the user's original hook
-+// thread 1 calls set_hook with the null hook
-+// thread 2 calls take_hook, thinks null hook is the original hook
-+// thread 2 calls set_hook with the null hook
-+// thread 1 calls set_hook with the actual original hook
-+// thread 2 calls set_hook with what it thinks is the original hook
-+//
-+// in which the user's hook has been lost.
-+//
-+// There is still a race condition where a panic in a different thread can
-+// happen during the interval that the user's original panic hook is
-+// unregistered such that their hook is incorrectly not called. This is
-+// sufficiently unlikely and less bad than printing panic messages to stderr
-+// on correct use of this crate. Maybe there is a libstd feature request
-+// here. For now, if a user needs to guarantee that this failure mode does
-+// not occur, they need to call e.g. `proc_macro2::Span::call_site()` from
-+// the main thread before launching any other threads.
-+fn initialize() {
-+ type PanicHook = dyn Fn(&PanicInfo) + Sync + Send + 'static;
-+
-+ let null_hook: Box<PanicHook> = Box::new(|_panic_info| { /* ignore */ });
-+ let sanity_check = &*null_hook as *const PanicHook;
-+ let original_hook = panic::take_hook();
-+ panic::set_hook(null_hook);
-+
-+ let works = panic::catch_unwind(proc_macro::Span::call_site).is_ok();
-+ WORKS.store(works as usize + 1, Ordering::SeqCst);
-+
-+ let hopefully_null_hook = panic::take_hook();
-+ panic::set_hook(original_hook);
-+ if sanity_check != &*hopefully_null_hook {
-+ panic!("observed race condition in proc_macro2::inside_proc_macro");
-+ }
-+}
-diff --git a/third_party/rust/proc-macro2/src/fallback.rs b/third_party/rust/proc-macro2/src/fallback.rs
---- a/third_party/rust/proc-macro2/src/fallback.rs
-+++ b/third_party/rust/proc-macro2/src/fallback.rs
-@@ -1,41 +1,121 @@
-+use crate::parse::{token_stream, Cursor};
-+use crate::{Delimiter, Spacing, TokenTree};
- #[cfg(span_locations)]
- use std::cell::RefCell;
- #[cfg(span_locations)]
- use std::cmp;
--use std::fmt;
--use std::iter;
-+use std::fmt::{self, Debug, Display};
-+use std::iter::FromIterator;
-+use std::mem;
- use std::ops::RangeBounds;
- #[cfg(procmacro2_semver_exempt)]
- use std::path::Path;
- use std::path::PathBuf;
- use std::str::FromStr;
- use std::vec;
--
--use crate::strnom::{block_comment, skip_whitespace, whitespace, word_break, Cursor, PResult};
--use crate::{Delimiter, Punct, Spacing, TokenTree};
- use unicode_xid::UnicodeXID;
-
-+/// Force use of proc-macro2's fallback implementation of the API for now, even
-+/// if the compiler's implementation is available.
-+pub fn force() {
-+ #[cfg(wrap_proc_macro)]
-+ crate::detection::force_fallback();
-+}
-+
-+/// Resume using the compiler's implementation of the proc macro API if it is
-+/// available.
-+pub fn unforce() {
-+ #[cfg(wrap_proc_macro)]
-+ crate::detection::unforce_fallback();
-+}
-+
- #[derive(Clone)]
--pub struct TokenStream {
-- inner: Vec<TokenTree>,
-+pub(crate) struct TokenStream {
-+ pub(crate) inner: Vec<TokenTree>,
- }
-
- #[derive(Debug)]
--pub struct LexError;
-+pub(crate) struct LexError;
-
- impl TokenStream {
- pub fn new() -> TokenStream {
- TokenStream { inner: Vec::new() }
- }
-
- pub fn is_empty(&self) -> bool {
- self.inner.len() == 0
- }
-+
-+ fn take_inner(&mut self) -> Vec<TokenTree> {
-+ mem::replace(&mut self.inner, Vec::new())
-+ }
-+
-+ fn push_token(&mut self, token: TokenTree) {
-+ // https://github.com/alexcrichton/proc-macro2/issues/235
-+ match token {
-+ #[cfg(not(no_bind_by_move_pattern_guard))]
-+ TokenTree::Literal(crate::Literal {
-+ #[cfg(wrap_proc_macro)]
-+ inner: crate::imp::Literal::Fallback(literal),
-+ #[cfg(not(wrap_proc_macro))]
-+ inner: literal,
-+ ..
-+ }) if literal.text.starts_with('-') => {
-+ push_negative_literal(self, literal);
-+ }
-+ #[cfg(no_bind_by_move_pattern_guard)]
-+ TokenTree::Literal(crate::Literal {
-+ #[cfg(wrap_proc_macro)]
-+ inner: crate::imp::Literal::Fallback(literal),
-+ #[cfg(not(wrap_proc_macro))]
-+ inner: literal,
-+ ..
-+ }) => {
-+ if literal.text.starts_with('-') {
-+ push_negative_literal(self, literal);
-+ } else {
-+ self.inner
-+ .push(TokenTree::Literal(crate::Literal::_new_stable(literal)));
-+ }
-+ }
-+ _ => self.inner.push(token),
-+ }
-+
-+ #[cold]
-+ fn push_negative_literal(stream: &mut TokenStream, mut literal: Literal) {
-+ literal.text.remove(0);
-+ let mut punct = crate::Punct::new('-', Spacing::Alone);
-+ punct.set_span(crate::Span::_new_stable(literal.span));
-+ stream.inner.push(TokenTree::Punct(punct));
-+ stream
-+ .inner
-+ .push(TokenTree::Literal(crate::Literal::_new_stable(literal)));
-+ }
-+ }
-+}
-+
-+// Nonrecursive to prevent stack overflow.
-+impl Drop for TokenStream {
-+ fn drop(&mut self) {
-+ while let Some(token) = self.inner.pop() {
-+ let group = match token {
-+ TokenTree::Group(group) => group.inner,
-+ _ => continue,
-+ };
-+ #[cfg(wrap_proc_macro)]
-+ let group = match group {
-+ crate::imp::Group::Fallback(group) => group,
-+ _ => continue,
-+ };
-+ let mut group = group;
-+ self.inner.extend(group.stream.take_inner());
-+ }
-+ }
- }
-
- #[cfg(span_locations)]
- fn get_cursor(src: &str) -> Cursor {
- // Create a dummy file & add it to the source map
- SOURCE_MAP.with(|cm| {
- let mut cm = cm.borrow_mut();
- let name = format!("<parsed string {}>", cm.files.len());
-@@ -54,68 +134,49 @@ fn get_cursor(src: &str) -> Cursor {
-
- impl FromStr for TokenStream {
- type Err = LexError;
-
- fn from_str(src: &str) -> Result<TokenStream, LexError> {
- // Create a dummy file & add it to the source map
- let cursor = get_cursor(src);
-
-- match token_stream(cursor) {
-- Ok((input, output)) => {
-- if skip_whitespace(input).len() != 0 {
-- Err(LexError)
-- } else {
-- Ok(output)
-- }
-- }
-- Err(LexError) => Err(LexError),
-+ let (rest, tokens) = token_stream(cursor)?;
-+ if rest.is_empty() {
-+ Ok(tokens)
-+ } else {
-+ Err(LexError)
- }
- }
- }
-
--impl fmt::Display for TokenStream {
-+impl Display for TokenStream {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- let mut joint = false;
- for (i, tt) in self.inner.iter().enumerate() {
- if i != 0 && !joint {
- write!(f, " ")?;
- }
- joint = false;
-- match *tt {
-- TokenTree::Group(ref tt) => {
-- let (start, end) = match tt.delimiter() {
-- Delimiter::Parenthesis => ("(", ")"),
-- Delimiter::Brace => ("{", "}"),
-- Delimiter::Bracket => ("[", "]"),
-- Delimiter::None => ("", ""),
-- };
-- if tt.stream().into_iter().next().is_none() {
-- write!(f, "{} {}", start, end)?
-- } else {
-- write!(f, "{} {} {}", start, tt.stream(), end)?
-- }
-+ match tt {
-+ TokenTree::Group(tt) => Display::fmt(tt, f),
-+ TokenTree::Ident(tt) => Display::fmt(tt, f),
-+ TokenTree::Punct(tt) => {
-+ joint = tt.spacing() == Spacing::Joint;
-+ Display::fmt(tt, f)
- }
-- TokenTree::Ident(ref tt) => write!(f, "{}", tt)?,
-- TokenTree::Punct(ref tt) => {
-- write!(f, "{}", tt.as_char())?;
-- match tt.spacing() {
-- Spacing::Alone => {}
-- Spacing::Joint => joint = true,
-- }
-- }
-- TokenTree::Literal(ref tt) => write!(f, "{}", tt)?,
-- }
-+ TokenTree::Literal(tt) => Display::fmt(tt, f),
-+ }?
- }
-
- Ok(())
- }
- }
-
--impl fmt::Debug for TokenStream {
-+impl Debug for TokenStream {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- f.write_str("TokenStream ")?;
- f.debug_list().entries(self.clone()).finish()
- }
- }
-
- #[cfg(use_proc_macro)]
- impl From<proc_macro::TokenStream> for TokenStream {
-@@ -134,122 +195,107 @@ impl From<TokenStream> for proc_macro::T
- .to_string()
- .parse()
- .expect("failed to parse to compiler tokens")
- }
- }
-
- impl From<TokenTree> for TokenStream {
- fn from(tree: TokenTree) -> TokenStream {
-- TokenStream { inner: vec![tree] }
-+ let mut stream = TokenStream::new();
-+ stream.push_token(tree);
-+ stream
- }
- }
-
--impl iter::FromIterator<TokenTree> for TokenStream {
-- fn from_iter<I: IntoIterator<Item = TokenTree>>(streams: I) -> Self {
-- let mut v = Vec::new();
--
-- for token in streams.into_iter() {
-- v.push(token);
-- }
--
-- TokenStream { inner: v }
-+impl FromIterator<TokenTree> for TokenStream {
-+ fn from_iter<I: IntoIterator<Item = TokenTree>>(tokens: I) -> Self {
-+ let mut stream = TokenStream::new();
-+ stream.extend(tokens);
-+ stream
- }
- }
-
--impl iter::FromIterator<TokenStream> for TokenStream {
-+impl FromIterator<TokenStream> for TokenStream {
- fn from_iter<I: IntoIterator<Item = TokenStream>>(streams: I) -> Self {
- let mut v = Vec::new();
-
-- for stream in streams.into_iter() {
-- v.extend(stream.inner);
-+ for mut stream in streams {
-+ v.extend(stream.take_inner());
- }
-
- TokenStream { inner: v }
- }
- }
-
- impl Extend<TokenTree> for TokenStream {
-- fn extend<I: IntoIterator<Item = TokenTree>>(&mut self, streams: I) {
-- self.inner.extend(streams);
-+ fn extend<I: IntoIterator<Item = TokenTree>>(&mut self, tokens: I) {
-+ tokens.into_iter().for_each(|token| self.push_token(token));
- }
- }
-
- impl Extend<TokenStream> for TokenStream {
- fn extend<I: IntoIterator<Item = TokenStream>>(&mut self, streams: I) {
-- self.inner
-- .extend(streams.into_iter().flat_map(|stream| stream));
-+ self.inner.extend(streams.into_iter().flatten());
- }
- }
-
--pub type TokenTreeIter = vec::IntoIter<TokenTree>;
-+pub(crate) type TokenTreeIter = vec::IntoIter<TokenTree>;
-
- impl IntoIterator for TokenStream {
- type Item = TokenTree;
- type IntoIter = TokenTreeIter;
-
-- fn into_iter(self) -> TokenTreeIter {
-- self.inner.into_iter()
-+ fn into_iter(mut self) -> TokenTreeIter {
-+ self.take_inner().into_iter()
- }
- }
-
- #[derive(Clone, PartialEq, Eq)]
--pub struct SourceFile {
-+pub(crate) struct SourceFile {
- path: PathBuf,
- }
-
- impl SourceFile {
- /// Get the path to this source file as a string.
- pub fn path(&self) -> PathBuf {
- self.path.clone()
- }
-
- pub fn is_real(&self) -> bool {
- // XXX(nika): Support real files in the future?
- false
- }
- }
-
--impl fmt::Debug for SourceFile {
-+impl Debug for SourceFile {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- f.debug_struct("SourceFile")
- .field("path", &self.path())
- .field("is_real", &self.is_real())
- .finish()
- }
- }
-
- #[derive(Clone, Copy, Debug, PartialEq, Eq)]
--pub struct LineColumn {
-+pub(crate) struct LineColumn {
- pub line: usize,
- pub column: usize,
- }
-
- #[cfg(span_locations)]
- thread_local! {
- static SOURCE_MAP: RefCell<SourceMap> = RefCell::new(SourceMap {
- // NOTE: We start with a single dummy file which all call_site() and
- // def_site() spans reference.
-- files: vec![{
-+ files: vec![FileInfo {
- #[cfg(procmacro2_semver_exempt)]
-- {
-- FileInfo {
-- name: "<unspecified>".to_owned(),
-- span: Span { lo: 0, hi: 0 },
-- lines: vec![0],
-- }
-- }
--
-- #[cfg(not(procmacro2_semver_exempt))]
-- {
-- FileInfo {
-- span: Span { lo: 0, hi: 0 },
-- lines: vec![0],
-- }
-- }
-+ name: "<unspecified>".to_owned(),
-+ span: Span { lo: 0, hi: 0 },
-+ lines: vec![0],
- }],
- });
- }
-
- #[cfg(span_locations)]
- struct FileInfo {
- #[cfg(procmacro2_semver_exempt)]
- name: String,
-@@ -277,26 +323,31 @@ impl FileInfo {
- }
- }
-
- fn span_within(&self, span: Span) -> bool {
- span.lo >= self.span.lo && span.hi <= self.span.hi
- }
- }
-
--/// Computesthe offsets of each line in the given source string.
-+/// Computes the offsets of each line in the given source string
-+/// and the total number of characters
- #[cfg(span_locations)]
--fn lines_offsets(s: &str) -> Vec<usize> {
-+fn lines_offsets(s: &str) -> (usize, Vec<usize>) {
- let mut lines = vec![0];
-- let mut prev = 0;
-- while let Some(len) = s[prev..].find('\n') {
-- prev += len + 1;
-- lines.push(prev);
-+ let mut total = 0;
-+
-+ for ch in s.chars() {
-+ total += 1;
-+ if ch == '\n' {
-+ lines.push(total);
-+ }
- }
-- lines
-+
-+ (total, lines)
- }
-
- #[cfg(span_locations)]
- struct SourceMap {
- files: Vec<FileInfo>,
- }
-
- #[cfg(span_locations)]
-@@ -305,81 +356,83 @@ impl SourceMap {
- // Add 1 so there's always space between files.
- //
- // We'll always have at least 1 file, as we initialize our files list
- // with a dummy file.
- self.files.last().unwrap().span.hi + 1
- }
-
- fn add_file(&mut self, name: &str, src: &str) -> Span {
-- let lines = lines_offsets(src);
-+ let (len, lines) = lines_offsets(src);
- let lo = self.next_start_pos();
- // XXX(nika): Shouild we bother doing a checked cast or checked add here?
- let span = Span {
- lo,
-- hi: lo + (src.len() as u32),
-+ hi: lo + (len as u32),
- };
-
-- #[cfg(procmacro2_semver_exempt)]
- self.files.push(FileInfo {
-+ #[cfg(procmacro2_semver_exempt)]
- name: name.to_owned(),
- span,
- lines,
- });
-
- #[cfg(not(procmacro2_semver_exempt))]
-- self.files.push(FileInfo { span, lines });
- let _ = name;
-
- span
- }
-
- fn fileinfo(&self, span: Span) -> &FileInfo {
- for file in &self.files {
- if file.span_within(span) {
- return file;
- }
- }
- panic!("Invalid span with no related FileInfo!");
- }
- }
-
- #[derive(Clone, Copy, PartialEq, Eq)]
--pub struct Span {
-+pub(crate) struct Span {
- #[cfg(span_locations)]
-- lo: u32,
-+ pub(crate) lo: u32,
- #[cfg(span_locations)]
-- hi: u32,
-+ pub(crate) hi: u32,
- }
-
- impl Span {
- #[cfg(not(span_locations))]
- pub fn call_site() -> Span {
- Span {}
- }
-
- #[cfg(span_locations)]
- pub fn call_site() -> Span {
- Span { lo: 0, hi: 0 }
- }
-
-+ #[cfg(hygiene)]
-+ pub fn mixed_site() -> Span {
-+ Span::call_site()
-+ }
-+
- #[cfg(procmacro2_semver_exempt)]
- pub fn def_site() -> Span {
- Span::call_site()
- }
-
-- #[cfg(procmacro2_semver_exempt)]
- pub fn resolved_at(&self, _other: Span) -> Span {
- // Stable spans consist only of line/column information, so
- // `resolved_at` and `located_at` only select which span the
- // caller wants line/column information from.
- *self
- }
-
-- #[cfg(procmacro2_semver_exempt)]
- pub fn located_at(&self, other: Span) -> Span {
- other
- }
-
- #[cfg(procmacro2_semver_exempt)]
- pub fn source_file(&self) -> SourceFile {
- SOURCE_MAP.with(|cm| {
- let cm = cm.borrow();
-@@ -422,36 +475,69 @@ impl Span {
- return None;
- }
- Some(Span {
- lo: cmp::min(self.lo, other.lo),
- hi: cmp::max(self.hi, other.hi),
- })
- })
- }
-+
-+ #[cfg(not(span_locations))]
-+ fn first_byte(self) -> Self {
-+ self
-+ }
-+
-+ #[cfg(span_locations)]
-+ fn first_byte(self) -> Self {
-+ Span {
-+ lo: self.lo,
-+ hi: cmp::min(self.lo.saturating_add(1), self.hi),
-+ }
-+ }
-+
-+ #[cfg(not(span_locations))]
-+ fn last_byte(self) -> Self {
-+ self
-+ }
-+
-+ #[cfg(span_locations)]
-+ fn last_byte(self) -> Self {
-+ Span {
-+ lo: cmp::max(self.hi.saturating_sub(1), self.lo),
-+ hi: self.hi,
-+ }
-+ }
- }
-
--impl fmt::Debug for Span {
-+impl Debug for Span {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- #[cfg(procmacro2_semver_exempt)]
-+ #[cfg(span_locations)]
- return write!(f, "bytes({}..{})", self.lo, self.hi);
-
-- #[cfg(not(procmacro2_semver_exempt))]
-+ #[cfg(not(span_locations))]
- write!(f, "Span")
- }
- }
-
--pub fn debug_span_field_if_nontrivial(debug: &mut fmt::DebugStruct, span: Span) {
-- if cfg!(procmacro2_semver_exempt) {
-+pub(crate) fn debug_span_field_if_nontrivial(debug: &mut fmt::DebugStruct, span: Span) {
-+ #[cfg(span_locations)]
-+ {
-+ if span.lo == 0 && span.hi == 0 {
-+ return;
-+ }
-+ }
-+
-+ if cfg!(span_locations) {
- debug.field("span", &span);
- }
- }
-
- #[derive(Clone)]
--pub struct Group {
-+pub(crate) struct Group {
- delimiter: Delimiter,
- stream: TokenStream,
- span: Span,
- }
-
- impl Group {
- pub fn new(delimiter: Delimiter, stream: TokenStream) -> Group {
- Group {
-@@ -469,58 +555,67 @@ impl Group {
- self.stream.clone()
- }
-
- pub fn span(&self) -> Span {
- self.span
- }
-
- pub fn span_open(&self) -> Span {
-- self.span
-+ self.span.first_byte()
- }
-
- pub fn span_close(&self) -> Span {
-- self.span
-+ self.span.last_byte()
- }
-
- pub fn set_span(&mut self, span: Span) {
- self.span = span;
- }
- }
-
--impl fmt::Display for Group {
-+impl Display for Group {
-+ // We attempt to match libproc_macro's formatting.
-+ // Empty parens: ()
-+ // Nonempty parens: (...)
-+ // Empty brackets: []
-+ // Nonempty brackets: [...]
-+ // Empty braces: { }
-+ // Nonempty braces: { ... }
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- let (left, right) = match self.delimiter {
-+ let (open, close) = match self.delimiter {
- Delimiter::Parenthesis => ("(", ")"),
-- Delimiter::Brace => ("{", "}"),
-+ Delimiter::Brace => ("{ ", "}"),
- Delimiter::Bracket => ("[", "]"),
- Delimiter::None => ("", ""),
- };
-
-- f.write_str(left)?;
-- self.stream.fmt(f)?;
-- f.write_str(right)?;
-+ f.write_str(open)?;
-+ Display::fmt(&self.stream, f)?;
-+ if self.delimiter == Delimiter::Brace && !self.stream.inner.is_empty() {
-+ f.write_str(" ")?;
-+ }
-+ f.write_str(close)?;
-
- Ok(())
- }
- }
-
--impl fmt::Debug for Group {
-+impl Debug for Group {
- fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
- let mut debug = fmt.debug_struct("Group");
- debug.field("delimiter", &self.delimiter);
- debug.field("stream", &self.stream);
-- #[cfg(procmacro2_semver_exempt)]
-- debug.field("span", &self.span);
-+ debug_span_field_if_nontrivial(&mut debug, self.span);
- debug.finish()
- }
- }
-
- #[derive(Clone)]
--pub struct Ident {
-+pub(crate) struct Ident {
- sym: String,
- span: Span,
- raw: bool,
- }
-
- impl Ident {
- fn _new(string: &str, raw: bool, span: Span) -> Ident {
- validate_ident(string);
-@@ -544,26 +639,24 @@ impl Ident {
- self.span
- }
-
- pub fn set_span(&mut self, span: Span) {
- self.span = span;
- }
- }
-
--#[inline]
--fn is_ident_start(c: char) -> bool {
-+pub(crate) fn is_ident_start(c: char) -> bool {
- ('a' <= c && c <= 'z')
- || ('A' <= c && c <= 'Z')
- || c == '_'
- || (c > '\x7f' && UnicodeXID::is_xid_start(c))
- }
-
--#[inline]
--fn is_ident_continue(c: char) -> bool {
-+pub(crate) fn is_ident_continue(c: char) -> bool {
- ('a' <= c && c <= 'z')
- || ('A' <= c && c <= 'Z')
- || c == '_'
- || ('0' <= c && c <= '9')
- || (c > '\x7f' && UnicodeXID::is_xid_continue(c))
- }
-
- fn validate_ident(string: &str) {
-@@ -610,49 +703,49 @@ where
- if self.raw {
- other.starts_with("r#") && self.sym == other[2..]
- } else {
- self.sym == other
- }
- }
- }
-
--impl fmt::Display for Ident {
-+impl Display for Ident {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- if self.raw {
-- "r#".fmt(f)?;
-+ f.write_str("r#")?;
- }
-- self.sym.fmt(f)
-+ Display::fmt(&self.sym, f)
- }
- }
-
--impl fmt::Debug for Ident {
-+impl Debug for Ident {
- // Ident(proc_macro), Ident(r#union)
-- #[cfg(not(procmacro2_semver_exempt))]
-+ #[cfg(not(span_locations))]
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- let mut debug = f.debug_tuple("Ident");
- debug.field(&format_args!("{}", self));
- debug.finish()
- }
-
- // Ident {
- // sym: proc_macro,
- // span: bytes(128..138)
- // }
-- #[cfg(procmacro2_semver_exempt)]
-+ #[cfg(span_locations)]
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- let mut debug = f.debug_struct("Ident");
- debug.field("sym", &format_args!("{}", self));
-- debug.field("span", &self.span);
-+ debug_span_field_if_nontrivial(&mut debug, self.span);
- debug.finish()
- }
- }
-
- #[derive(Clone)]
--pub struct Literal {
-+pub(crate) struct Literal {
- text: String,
- span: Span,
- }
-
- macro_rules! suffixed_numbers {
- ($($name:ident => $kind:ident,)*) => ($(
- pub fn $name(n: $kind) -> Literal {
- Literal::_new(format!(concat!("{}", stringify!($kind)), n))
-@@ -664,17 +757,17 @@ macro_rules! unsuffixed_numbers {
- ($($name:ident => $kind:ident,)*) => ($(
- pub fn $name(n: $kind) -> Literal {
- Literal::_new(n.to_string())
- }
- )*)
- }
-
- impl Literal {
-- fn _new(text: String) -> Literal {
-+ pub(crate) fn _new(text: String) -> Literal {
- Literal {
- text,
- span: Span::call_site(),
- }
- }
-
- suffixed_numbers! {
- u8_suffixed => u8,
-@@ -706,61 +799,62 @@ impl Literal {
- i32_unsuffixed => i32,
- i64_unsuffixed => i64,
- i128_unsuffixed => i128,
- isize_unsuffixed => isize,
- }
-
- pub fn f32_unsuffixed(f: f32) -> Literal {
- let mut s = f.to_string();
-- if !s.contains(".") {
-+ if !s.contains('.') {
- s.push_str(".0");
- }
- Literal::_new(s)
- }
-
- pub fn f64_unsuffixed(f: f64) -> Literal {
- let mut s = f.to_string();
-- if !s.contains(".") {
-+ if !s.contains('.') {
- s.push_str(".0");
- }
- Literal::_new(s)
- }
-
- pub fn string(t: &str) -> Literal {
- let mut text = String::with_capacity(t.len() + 2);
- text.push('"');
- for c in t.chars() {
- if c == '\'' {
-- // escape_default turns this into "\'" which is unnecessary.
-+ // escape_debug turns this into "\'" which is unnecessary.
- text.push(c);
- } else {
-- text.extend(c.escape_default());
-+ text.extend(c.escape_debug());
- }
- }
- text.push('"');
- Literal::_new(text)
- }
-
- pub fn character(t: char) -> Literal {
- let mut text = String::new();
- text.push('\'');
- if t == '"' {
-- // escape_default turns this into '\"' which is unnecessary.
-+ // escape_debug turns this into '\"' which is unnecessary.
- text.push(t);
- } else {
-- text.extend(t.escape_default());
-+ text.extend(t.escape_debug());
- }
- text.push('\'');
- Literal::_new(text)
- }
-
- pub fn byte_string(bytes: &[u8]) -> Literal {
- let mut escaped = "b\"".to_string();
- for b in bytes {
-+ #[allow(clippy::match_overlapping_arm)]
- match *b {
- b'\0' => escaped.push_str(r"\0"),
- b'\t' => escaped.push_str(r"\t"),
- b'\n' => escaped.push_str(r"\n"),
- b'\r' => escaped.push_str(r"\r"),
- b'"' => escaped.push_str("\\\""),
- b'\\' => escaped.push_str("\\\\"),
- b'\x20'..=b'\x7E' => escaped.push(*b as char),
-@@ -779,656 +873,22 @@ impl Literal {
- self.span = span;
- }
-
- pub fn subspan<R: RangeBounds<usize>>(&self, _range: R) -> Option<Span> {
- None
- }
- }
-
--impl fmt::Display for Literal {
-+impl Display for Literal {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- self.text.fmt(f)
-- }
--}
--
--impl fmt::Debug for Literal {
-- fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-- let mut debug = fmt.debug_struct("Literal");
-- debug.field("lit", &format_args!("{}", self.text));
-- #[cfg(procmacro2_semver_exempt)]
-- debug.field("span", &self.span);
-- debug.finish()
-- }
--}
--
--fn token_stream(mut input: Cursor) -> PResult<TokenStream> {
-- let mut trees = Vec::new();
-- loop {
-- let input_no_ws = skip_whitespace(input);
-- if input_no_ws.rest.len() == 0 {
-- break;
-- }
-- if let Ok((a, tokens)) = doc_comment(input_no_ws) {
-- input = a;
-- trees.extend(tokens);
-- continue;
-- }
--
-- let (a, tt) = match token_tree(input_no_ws) {
-- Ok(p) => p,
-- Err(_) => break,
-- };
-- trees.push(tt);
-- input = a;
-- }
-- Ok((input, TokenStream { inner: trees }))
--}
--
--#[cfg(not(span_locations))]
--fn spanned<'a, T>(
-- input: Cursor<'a>,
-- f: fn(Cursor<'a>) -> PResult<'a, T>,
--) -> PResult<'a, (T, crate::Span)> {
-- let (a, b) = f(skip_whitespace(input))?;
-- Ok((a, ((b, crate::Span::_new_stable(Span::call_site())))))
--}
--
--#[cfg(span_locations)]
--fn spanned<'a, T>(
-- input: Cursor<'a>,
-- f: fn(Cursor<'a>) -> PResult<'a, T>,
--) -> PResult<'a, (T, crate::Span)> {
-- let input = skip_whitespace(input);
-- let lo = input.off;
-- let (a, b) = f(input)?;
-- let hi = a.off;
-- let span = crate::Span::_new_stable(Span { lo, hi });
-- Ok((a, (b, span)))
--}
--
--fn token_tree(input: Cursor) -> PResult<TokenTree> {
-- let (rest, (mut tt, span)) = spanned(input, token_kind)?;
-- tt.set_span(span);
-- Ok((rest, tt))
--}
--
--named!(token_kind -> TokenTree, alt!(
-- map!(group, |g| TokenTree::Group(crate::Group::_new_stable(g)))
-- |
-- map!(literal, |l| TokenTree::Literal(crate::Literal::_new_stable(l))) // must be before symbol
-- |
-- map!(op, TokenTree::Punct)
-- |
-- symbol_leading_ws
--));
--
--named!(group -> Group, alt!(
-- delimited!(
-- punct!("("),
-- token_stream,
-- punct!(")")
-- ) => { |ts| Group::new(Delimiter::Parenthesis, ts) }
-- |
-- delimited!(
-- punct!("["),
-- token_stream,
-- punct!("]")
-- ) => { |ts| Group::new(Delimiter::Bracket, ts) }
-- |
-- delimited!(
-- punct!("{"),
-- token_stream,
-- punct!("}")
-- ) => { |ts| Group::new(Delimiter::Brace, ts) }
--));
--
--fn symbol_leading_ws(input: Cursor) -> PResult<TokenTree> {
-- symbol(skip_whitespace(input))
--}
--
--fn symbol(input: Cursor) -> PResult<TokenTree> {
-- let raw = input.starts_with("r#");
-- let rest = input.advance((raw as usize) << 1);
--
-- let (rest, sym) = symbol_not_raw(rest)?;
--
-- if !raw {
-- let ident = crate::Ident::new(sym, crate::Span::call_site());
-- return Ok((rest, ident.into()));
-- }
--
-- if sym == "_" {
-- return Err(LexError);
-- }
--
-- let ident = crate::Ident::_new_raw(sym, crate::Span::call_site());
-- Ok((rest, ident.into()))
--}
--
--fn symbol_not_raw(input: Cursor) -> PResult<&str> {
-- let mut chars = input.char_indices();
--
-- match chars.next() {
-- Some((_, ch)) if is_ident_start(ch) => {}
-- _ => return Err(LexError),
-- }
--
-- let mut end = input.len();
-- for (i, ch) in chars {
-- if !is_ident_continue(ch) {
-- end = i;
-- break;
-- }
-- }
--
-- Ok((input.advance(end), &input.rest[..end]))
--}
--
--fn literal(input: Cursor) -> PResult<Literal> {
-- let input_no_ws = skip_whitespace(input);
--
-- match literal_nocapture(input_no_ws) {
-- Ok((a, ())) => {
-- let start = input.len() - input_no_ws.len();
-- let len = input_no_ws.len() - a.len();
-- let end = start + len;
-- Ok((a, Literal::_new(input.rest[start..end].to_string())))
-- }
-- Err(LexError) => Err(LexError),
-+ Display::fmt(&self.text, f)
- }
- }
-
--named!(literal_nocapture -> (), alt!(
-- string
-- |
-- byte_string
-- |
-- byte
-- |
-- character
-- |
-- float
-- |
-- int
--));
--
--named!(string -> (), alt!(
-- quoted_string
-- |
-- preceded!(
-- punct!("r"),
-- raw_string
-- ) => { |_| () }
--));
--
--named!(quoted_string -> (), do_parse!(
-- punct!("\"") >>
-- cooked_string >>
-- tag!("\"") >>
-- option!(symbol_not_raw) >>
-- (())
--));
--
--fn cooked_string(input: Cursor) -> PResult<()> {
-- let mut chars = input.char_indices().peekable();
-- while let Some((byte_offset, ch)) = chars.next() {
-- match ch {
-- '"' => {
-- return Ok((input.advance(byte_offset), ()));
-- }
-- '\r' => {
-- if let Some((_, '\n')) = chars.next() {
-- // ...
-- } else {
-- break;
-- }
-- }
-- '\\' => match chars.next() {
-- Some((_, 'x')) => {
-- if !backslash_x_char(&mut chars) {
-- break;
-- }
-- }
-- Some((_, 'n')) | Some((_, 'r')) | Some((_, 't')) | Some((_, '\\'))
-- | Some((_, '\'')) | Some((_, '"')) | Some((_, '0')) => {}
-- Some((_, 'u')) => {
-- if !backslash_u(&mut chars) {
-- break;
-- }
-- }
-- Some((_, '\n')) | Some((_, '\r')) => {
-- while let Some(&(_, ch)) = chars.peek() {
-- if ch.is_whitespace() {
-- chars.next();
-- } else {
-- break;
-- }
-- }
-- }
-- _ => break,
-- },
-- _ch => {}
-- }
-- }
-- Err(LexError)
--}
--
--named!(byte_string -> (), alt!(
-- delimited!(
-- punct!("b\""),
-- cooked_byte_string,
-- tag!("\"")
-- ) => { |_| () }
-- |
-- preceded!(
-- punct!("br"),
-- raw_string
-- ) => { |_| () }
--));
--
--fn cooked_byte_string(mut input: Cursor) -> PResult<()> {
-- let mut bytes = input.bytes().enumerate();
-- 'outer: while let Some((offset, b)) = bytes.next() {
-- match b {
-- b'"' => {
-- return Ok((input.advance(offset), ()));
-- }
-- b'\r' => {
-- if let Some((_, b'\n')) = bytes.next() {
-- // ...
-- } else {
-- break;
-- }
-- }
-- b'\\' => match bytes.next() {
-- Some((_, b'x')) => {
-- if !backslash_x_byte(&mut bytes) {
-- break;
-- }
-- }
-- Some((_, b'n')) | Some((_, b'r')) | Some((_, b't')) | Some((_, b'\\'))
-- | Some((_, b'0')) | Some((_, b'\'')) | Some((_, b'"')) => {}
-- Some((newline, b'\n')) | Some((newline, b'\r')) => {
-- let rest = input.advance(newline + 1);
-- for (offset, ch) in rest.char_indices() {
-- if !ch.is_whitespace() {
-- input = rest.advance(offset);
-- bytes = input.bytes().enumerate();
-- continue 'outer;
-- }
-- }
-- break;
-- }
-- _ => break,
-- },
-- b if b < 0x80 => {}
-- _ => break,
-- }
-- }
-- Err(LexError)
--}
--
--fn raw_string(input: Cursor) -> PResult<()> {
-- let mut chars = input.char_indices();
-- let mut n = 0;
-- while let Some((byte_offset, ch)) = chars.next() {
-- match ch {
-- '"' => {
-- n = byte_offset;
-- break;
-- }
-- '#' => {}
-- _ => return Err(LexError),
-- }
-- }
-- for (byte_offset, ch) in chars {
-- match ch {
-- '"' if input.advance(byte_offset + 1).starts_with(&input.rest[..n]) => {
-- let rest = input.advance(byte_offset + 1 + n);
-- return Ok((rest, ()));
-- }
-- '\r' => {}
-- _ => {}
-- }
-- }
-- Err(LexError)
--}
--
--named!(byte -> (), do_parse!(
-- punct!("b") >>
-- tag!("'") >>
-- cooked_byte >>
-- tag!("'") >>
-- (())
--));
--
--fn cooked_byte(input: Cursor) -> PResult<()> {
-- let mut bytes = input.bytes().enumerate();
-- let ok = match bytes.next().map(|(_, b)| b) {
-- Some(b'\\') => match bytes.next().map(|(_, b)| b) {
-- Some(b'x') => backslash_x_byte(&mut bytes),
-- Some(b'n') | Some(b'r') | Some(b't') | Some(b'\\') | Some(b'0') | Some(b'\'')
-- | Some(b'"') => true,
-- _ => false,
-- },
-- b => b.is_some(),
-- };
-- if ok {
-- match bytes.next() {
-- Some((offset, _)) => {
-- if input.chars().as_str().is_char_boundary(offset) {
-- Ok((input.advance(offset), ()))
-- } else {
-- Err(LexError)
-- }
-- }
-- None => Ok((input.advance(input.len()), ())),
-- }
-- } else {
-- Err(LexError)
-- }
--}
--
--named!(character -> (), do_parse!(
-- punct!("'") >>
-- cooked_char >>
-- tag!("'") >>
-- (())
--));
--
--fn cooked_char(input: Cursor) -> PResult<()> {
-- let mut chars = input.char_indices();
-- let ok = match chars.next().map(|(_, ch)| ch) {
-- Some('\\') => match chars.next().map(|(_, ch)| ch) {
-- Some('x') => backslash_x_char(&mut chars),
-- Some('u') => backslash_u(&mut chars),
-- Some('n') | Some('r') | Some('t') | Some('\\') | Some('0') | Some('\'') | Some('"') => {
-- true
-- }
-- _ => false,
-- },
-- ch => ch.is_some(),
-- };
-- if ok {
-- match chars.next() {
-- Some((idx, _)) => Ok((input.advance(idx), ())),
-- None => Ok((input.advance(input.len()), ())),
-- }
-- } else {
-- Err(LexError)
-+impl Debug for Literal {
-+ fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-+ let mut debug = fmt.debug_struct("Literal");
-+ debug.field("lit", &format_args!("{}", self.text));
-+ debug_span_field_if_nontrivial(&mut debug, self.span);
-+ debug.finish()
- }
- }
--
--macro_rules! next_ch {
-- ($chars:ident @ $pat:pat $(| $rest:pat)*) => {
-- match $chars.next() {
-- Some((_, ch)) => match ch {
-- $pat $(| $rest)* => ch,
-- _ => return false,
-- },
-- None => return false
-- }
-- };
--}
--
--fn backslash_x_char<I>(chars: &mut I) -> bool
--where
-- I: Iterator<Item = (usize, char)>,
--{
-- next_ch!(chars @ '0'..='7');
-- next_ch!(chars @ '0'..='9' | 'a'..='f' | 'A'..='F');
-- true
--}
--
--fn backslash_x_byte<I>(chars: &mut I) -> bool
--where
-- I: Iterator<Item = (usize, u8)>,
--{
-- next_ch!(chars @ b'0'..=b'9' | b'a'..=b'f' | b'A'..=b'F');
-- next_ch!(chars @ b'0'..=b'9' | b'a'..=b'f' | b'A'..=b'F');
-- true
--}
--
--fn backslash_u<I>(chars: &mut I) -> bool
--where
-- I: Iterator<Item = (usize, char)>,
--{
-- next_ch!(chars @ '{');
-- next_ch!(chars @ '0'..='9' | 'a'..='f' | 'A'..='F');
-- loop {
-- let c = next_ch!(chars @ '0'..='9' | 'a'..='f' | 'A'..='F' | '_' | '}');
-- if c == '}' {
-- return true;
-- }
-- }
--}
--
--fn float(input: Cursor) -> PResult<()> {
-- let (mut rest, ()) = float_digits(input)?;
-- if let Some(ch) = rest.chars().next() {
-- if is_ident_start(ch) {
-- rest = symbol_not_raw(rest)?.0;
-- }
-- }
-- word_break(rest)
--}
--
--fn float_digits(input: Cursor) -> PResult<()> {
-- let mut chars = input.chars().peekable();
-- match chars.next() {
-- Some(ch) if ch >= '0' && ch <= '9' => {}
-- _ => return Err(LexError),
-- }
--
-- let mut len = 1;
-- let mut has_dot = false;
-- let mut has_exp = false;
-- while let Some(&ch) = chars.peek() {
-- match ch {
-- '0'..='9' | '_' => {
-- chars.next();
-- len += 1;
-- }
-- '.' => {
-- if has_dot {
-- break;
-- }
-- chars.next();
-- if chars
-- .peek()
-- .map(|&ch| ch == '.' || is_ident_start(ch))
-- .unwrap_or(false)
-- {
-- return Err(LexError);
-- }
-- len += 1;
-- has_dot = true;
-- }
-- 'e' | 'E' => {
-- chars.next();
-- len += 1;
-- has_exp = true;
-- break;
-- }
-- _ => break,
-- }
-- }
--
-- let rest = input.advance(len);
-- if !(has_dot || has_exp || rest.starts_with("f32") || rest.starts_with("f64")) {
-- return Err(LexError);
-- }
--
-- if has_exp {
-- let mut has_exp_value = false;
-- while let Some(&ch) = chars.peek() {
-- match ch {
-- '+' | '-' => {
-- if has_exp_value {
-- break;
-- }
-- chars.next();
-- len += 1;
-- }
-- '0'..='9' => {
-- chars.next();
-- len += 1;
-- has_exp_value = true;
-- }
-- '_' => {
-- chars.next();
-- len += 1;
-- }
-- _ => break,
-- }
-- }
-- if !has_exp_value {
-- return Err(LexError);
-- }
-- }
--
-- Ok((input.advance(len), ()))
--}
--
--fn int(input: Cursor) -> PResult<()> {
-- let (mut rest, ()) = digits(input)?;
-- if let Some(ch) = rest.chars().next() {
-- if is_ident_start(ch) {
-- rest = symbol_not_raw(rest)?.0;
-- }
-- }
-- word_break(rest)
--}
--
--fn digits(mut input: Cursor) -> PResult<()> {
-- let base = if input.starts_with("0x") {
-- input = input.advance(2);
-- 16
-- } else if input.starts_with("0o") {
-- input = input.advance(2);
-- 8
-- } else if input.starts_with("0b") {
-- input = input.advance(2);
-- 2
-- } else {
-- 10
-- };
--
-- let mut len = 0;
-- let mut empty = true;
-- for b in input.bytes() {
-- let digit = match b {
-- b'0'..=b'9' => (b - b'0') as u64,
-- b'a'..=b'f' => 10 + (b - b'a') as u64,
-- b'A'..=b'F' => 10 + (b - b'A') as u64,
-- b'_' => {
-- if empty && base == 10 {
-- return Err(LexError);
-- }
-- len += 1;
-- continue;
-- }
-- _ => break,
-- };
-- if digit >= base {
-- return Err(LexError);
-- }
-- len += 1;
-- empty = false;
-- }
-- if empty {
-- Err(LexError)
-- } else {
-- Ok((input.advance(len), ()))
-- }
--}
--
--fn op(input: Cursor) -> PResult<Punct> {
-- let input = skip_whitespace(input);
-- match op_char(input) {
-- Ok((rest, '\'')) => {
-- symbol(rest)?;
-- Ok((rest, Punct::new('\'', Spacing::Joint)))
-- }
-- Ok((rest, ch)) => {
-- let kind = match op_char(rest) {
-- Ok(_) => Spacing::Joint,
-- Err(LexError) => Spacing::Alone,
-- };
-- Ok((rest, Punct::new(ch, kind)))
-- }
-- Err(LexError) => Err(LexError),
-- }
--}
--
--fn op_char(input: Cursor) -> PResult<char> {
-- if input.starts_with("//") || input.starts_with("/*") {
-- // Do not accept `/` of a comment as an op.
-- return Err(LexError);
-- }
--
-- let mut chars = input.chars();
-- let first = match chars.next() {
-- Some(ch) => ch,
-- None => {
-- return Err(LexError);
-- }
-- };
-- let recognized = "~!@#$%^&*-=+|;:,<.>/?'";
-- if recognized.contains(first) {
-- Ok((input.advance(first.len_utf8()), first))
-- } else {
-- Err(LexError)
-- }
--}
--
--fn doc_comment(input: Cursor) -> PResult<Vec<TokenTree>> {
-- let mut trees = Vec::new();
-- let (rest, ((comment, inner), span)) = spanned(input, doc_comment_contents)?;
-- trees.push(TokenTree::Punct(Punct::new('#', Spacing::Alone)));
-- if inner {
-- trees.push(Punct::new('!', Spacing::Alone).into());
-- }
-- let mut stream = vec![
-- TokenTree::Ident(crate::Ident::new("doc", span)),
-- TokenTree::Punct(Punct::new('=', Spacing::Alone)),
-- TokenTree::Literal(crate::Literal::string(comment)),
-- ];
-- for tt in stream.iter_mut() {
-- tt.set_span(span);
-- }
-- let group = Group::new(Delimiter::Bracket, stream.into_iter().collect());
-- trees.push(crate::Group::_new_stable(group).into());
-- for tt in trees.iter_mut() {
-- tt.set_span(span);
-- }
-- Ok((rest, trees))
--}
--
--named!(doc_comment_contents -> (&str, bool), alt!(
-- do_parse!(
-- punct!("//!") >>
-- s: take_until_newline_or_eof!() >>
-- ((s, true))
-- )
-- |
-- do_parse!(
-- option!(whitespace) >>
-- peek!(tag!("/*!")) >>
-- s: block_comment >>
-- ((s, true))
-- )
-- |
-- do_parse!(
-- punct!("///") >>
-- not!(tag!("/")) >>
-- s: take_until_newline_or_eof!() >>
-- ((s, false))
-- )
-- |
-- do_parse!(
-- option!(whitespace) >>
-- peek!(tuple!(tag!("/**"), not!(tag!("*")))) >>
-- s: block_comment >>
-- ((s, false))
-- )
--));
-diff --git a/third_party/rust/proc-macro2/src/lib.rs b/third_party/rust/proc-macro2/src/lib.rs
---- a/third_party/rust/proc-macro2/src/lib.rs
-+++ b/third_party/rust/proc-macro2/src/lib.rs
-@@ -73,37 +73,44 @@
- //!
- //! # Thread-Safety
- //!
- //! Most types in this crate are `!Sync` because the underlying compiler
- //! types make use of thread-local memory, meaning they cannot be accessed from
- //! a different thread.
-
- // Proc-macro2 types in rustdoc of other crates get linked to here.
--#![doc(html_root_url = "https://docs.rs/proc-macro2/1.0.5")]
-+#![doc(html_root_url = "https://docs.rs/proc-macro2/1.0.20")]
- #![cfg_attr(any(proc_macro_span, super_unstable), feature(proc_macro_span))]
- #![cfg_attr(super_unstable, feature(proc_macro_raw_ident, proc_macro_def_site))]
-+#![allow(clippy::needless_doctest_main)]
-
- #[cfg(use_proc_macro)]
- extern crate proc_macro;
-
- use std::cmp::Ordering;
--use std::fmt;
-+use std::fmt::{self, Debug, Display};
- use std::hash::{Hash, Hasher};
- use std::iter::FromIterator;
- use std::marker;
- use std::ops::RangeBounds;
- #[cfg(procmacro2_semver_exempt)]
- use std::path::PathBuf;
- use std::rc::Rc;
- use std::str::FromStr;
-
--#[macro_use]
--mod strnom;
--mod fallback;
-+mod parse;
-+
-+#[cfg(wrap_proc_macro)]
-+mod detection;
-+
-+// Public for proc_macro2::fallback::force() and unforce(), but those are quite
-+// a niche use case so we omit it from rustdoc.
-+#[doc(hidden)]
-+pub mod fallback;
-
- #[cfg(not(wrap_proc_macro))]
- use crate::fallback as imp;
- #[path = "wrapper.rs"]
- #[cfg(wrap_proc_macro)]
- mod imp;
-
- /// An abstract stream of tokens, or more concretely a sequence of token trees.
-@@ -223,32 +230,32 @@ impl FromIterator<TokenStream> for Token
- TokenStream::_new(streams.into_iter().map(|i| i.inner).collect())
- }
- }
-
- /// Prints the token stream as a string that is supposed to be losslessly
- /// convertible back into the same token stream (modulo spans), except for
- /// possibly `TokenTree::Group`s with `Delimiter::None` delimiters and negative
- /// numeric literals.
--impl fmt::Display for TokenStream {
-+impl Display for TokenStream {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- self.inner.fmt(f)
-+ Display::fmt(&self.inner, f)
- }
- }
-
- /// Prints token in a form convenient for debugging.
--impl fmt::Debug for TokenStream {
-+impl Debug for TokenStream {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- self.inner.fmt(f)
-+ Debug::fmt(&self.inner, f)
- }
- }
-
--impl fmt::Debug for LexError {
-+impl Debug for LexError {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- self.inner.fmt(f)
-+ Debug::fmt(&self.inner, f)
- }
- }
-
- /// The source file of a given `Span`.
- ///
- /// This type is semver exempt and not exposed by default.
- #[cfg(procmacro2_semver_exempt)]
- #[derive(Clone, PartialEq, Eq)]
-@@ -286,19 +293,19 @@ impl SourceFile {
- /// Returns `true` if this source file is a real source file, and not
- /// generated by an external macro's expansion.
- pub fn is_real(&self) -> bool {
- self.inner.is_real()
- }
- }
-
- #[cfg(procmacro2_semver_exempt)]
--impl fmt::Debug for SourceFile {
-+impl Debug for SourceFile {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- self.inner.fmt(f)
-+ Debug::fmt(&self.inner, f)
- }
- }
-
- /// A line-column pair representing the start or end of a `Span`.
- ///
- /// This type is semver exempt and not exposed by default.
- #[cfg(span_locations)]
- #[derive(Copy, Clone, Debug, PartialEq, Eq)]
-@@ -306,16 +313,32 @@ pub struct LineColumn {
- /// The 1-indexed line in the source file on which the span starts or ends
- /// (inclusive).
- pub line: usize,
- /// The 0-indexed column (in UTF-8 characters) in the source file on which
- /// the span starts or ends (inclusive).
- pub column: usize,
- }
-
-+#[cfg(span_locations)]
-+impl Ord for LineColumn {
-+ fn cmp(&self, other: &Self) -> Ordering {
-+ self.line
-+ .cmp(&other.line)
-+ .then(self.column.cmp(&other.column))
-+ }
-+}
-+
-+#[cfg(span_locations)]
-+impl PartialOrd for LineColumn {
-+ fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-+ Some(self.cmp(other))
-+ }
-+}
-+
- /// A region of source code, along with macro expansion information.
- #[derive(Copy, Clone)]
- pub struct Span {
- inner: imp::Span,
- _marker: marker::PhantomData<Rc<()>>,
- }
-
- impl Span {
-@@ -337,38 +360,42 @@ impl Span {
- ///
- /// Identifiers created with this span will be resolved as if they were
- /// written directly at the macro call location (call-site hygiene) and
- /// other code at the macro call site will be able to refer to them as well.
- pub fn call_site() -> Span {
- Span::_new(imp::Span::call_site())
- }
-
-+ /// The span located at the invocation of the procedural macro, but with
-+ /// local variables, labels, and `$crate` resolved at the definition site
-+ /// of the macro. This is the same hygiene behavior as `macro_rules`.
-+ ///
-+ /// This function requires Rust 1.45 or later.
-+ #[cfg(hygiene)]
-+ pub fn mixed_site() -> Span {
-+ Span::_new(imp::Span::mixed_site())
-+ }
-+
- /// A span that resolves at the macro definition site.
- ///
- /// This method is semver exempt and not exposed by default.
- #[cfg(procmacro2_semver_exempt)]
- pub fn def_site() -> Span {
- Span::_new(imp::Span::def_site())
- }
-
- /// Creates a new span with the same line/column information as `self` but
- /// that resolves symbols as though it were at `other`.
-- ///
-- /// This method is semver exempt and not exposed by default.
-- #[cfg(procmacro2_semver_exempt)]
- pub fn resolved_at(&self, other: Span) -> Span {
- Span::_new(self.inner.resolved_at(other.inner))
- }
-
- /// Creates a new span with the same name resolution behavior as `self` but
- /// with the line/column information of `other`.
-- ///
-- /// This method is semver exempt and not exposed by default.
-- #[cfg(procmacro2_semver_exempt)]
- pub fn located_at(&self, other: Span) -> Span {
- Span::_new(self.inner.located_at(other.inner))
- }
-
- /// Convert `proc_macro2::Span` to `proc_macro::Span`.
- ///
- /// This method is available when building with a nightly compiler, or when
- /// building with rustc 1.29+ *without* semver exempt features.
-@@ -434,19 +461,19 @@ impl Span {
- /// This method is semver exempt and not exposed by default.
- #[cfg(procmacro2_semver_exempt)]
- pub fn eq(&self, other: &Span) -> bool {
- self.inner.eq(&other.inner)
- }
- }
-
- /// Prints a span in a form convenient for debugging.
--impl fmt::Debug for Span {
-+impl Debug for Span {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- self.inner.fmt(f)
-+ Debug::fmt(&self.inner, f)
- }
- }
-
- /// A single token or a delimited sequence of token trees (e.g. `[1, (), ..]`).
- #[derive(Clone)]
- pub enum TokenTree {
- /// A token stream surrounded by bracket delimiters.
- Group(Group),
-@@ -457,35 +484,35 @@ pub enum TokenTree {
- /// A literal character (`'a'`), string (`"hello"`), number (`2.3`), etc.
- Literal(Literal),
- }
-
- impl TokenTree {
- /// Returns the span of this tree, delegating to the `span` method of
- /// the contained token or a delimited stream.
- pub fn span(&self) -> Span {
-- match *self {
-- TokenTree::Group(ref t) => t.span(),
-- TokenTree::Ident(ref t) => t.span(),
-- TokenTree::Punct(ref t) => t.span(),
-- TokenTree::Literal(ref t) => t.span(),
-+ match self {
-+ TokenTree::Group(t) => t.span(),
-+ TokenTree::Ident(t) => t.span(),
-+ TokenTree::Punct(t) => t.span(),
-+ TokenTree::Literal(t) => t.span(),
- }
- }
-
- /// Configures the span for *only this token*.
- ///
- /// Note that if this token is a `Group` then this method will not configure
- /// the span of each of the internal tokens, this will simply delegate to
- /// the `set_span` method of each variant.
- pub fn set_span(&mut self, span: Span) {
-- match *self {
-- TokenTree::Group(ref mut t) => t.set_span(span),
-- TokenTree::Ident(ref mut t) => t.set_span(span),
-- TokenTree::Punct(ref mut t) => t.set_span(span),
-- TokenTree::Literal(ref mut t) => t.set_span(span),
-+ match self {
-+ TokenTree::Group(t) => t.set_span(span),
-+ TokenTree::Ident(t) => t.set_span(span),
-+ TokenTree::Punct(t) => t.set_span(span),
-+ TokenTree::Literal(t) => t.set_span(span),
- }
- }
- }
-
- impl From<Group> for TokenTree {
- fn from(g: Group) -> TokenTree {
- TokenTree::Group(g)
- }
-@@ -508,42 +535,42 @@ impl From<Literal> for TokenTree {
- TokenTree::Literal(g)
- }
- }
-
- /// Prints the token tree as a string that is supposed to be losslessly
- /// convertible back into the same token tree (modulo spans), except for
- /// possibly `TokenTree::Group`s with `Delimiter::None` delimiters and negative
- /// numeric literals.
--impl fmt::Display for TokenTree {
-+impl Display for TokenTree {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- match *self {
-- TokenTree::Group(ref t) => t.fmt(f),
-- TokenTree::Ident(ref t) => t.fmt(f),
-- TokenTree::Punct(ref t) => t.fmt(f),
-- TokenTree::Literal(ref t) => t.fmt(f),
-+ match self {
-+ TokenTree::Group(t) => Display::fmt(t, f),
-+ TokenTree::Ident(t) => Display::fmt(t, f),
-+ TokenTree::Punct(t) => Display::fmt(t, f),
-+ TokenTree::Literal(t) => Display::fmt(t, f),
- }
- }
- }
-
- /// Prints token tree in a form convenient for debugging.
--impl fmt::Debug for TokenTree {
-+impl Debug for TokenTree {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- // Each of these has the name in the struct type in the derived debug,
- // so don't bother with an extra layer of indirection
-- match *self {
-- TokenTree::Group(ref t) => t.fmt(f),
-- TokenTree::Ident(ref t) => {
-+ match self {
-+ TokenTree::Group(t) => Debug::fmt(t, f),
-+ TokenTree::Ident(t) => {
- let mut debug = f.debug_struct("Ident");
- debug.field("sym", &format_args!("{}", t));
- imp::debug_span_field_if_nontrivial(&mut debug, t.span().inner);
- debug.finish()
- }
-- TokenTree::Punct(ref t) => t.fmt(f),
-- TokenTree::Literal(ref t) => t.fmt(f),
-+ TokenTree::Punct(t) => Debug::fmt(t, f),
-+ TokenTree::Literal(t) => Debug::fmt(t, f),
- }
- }
- }
-
- /// A delimited token stream.
- ///
- /// A `Group` internally contains a `TokenStream` which is surrounded by
- /// `Delimiter`s.
-@@ -646,25 +673,25 @@ impl Group {
- pub fn set_span(&mut self, span: Span) {
- self.inner.set_span(span.inner)
- }
- }
-
- /// Prints the group as a string that should be losslessly convertible back
- /// into the same group (modulo spans), except for possibly `TokenTree::Group`s
- /// with `Delimiter::None` delimiters.
--impl fmt::Display for Group {
-+impl Display for Group {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-- fmt::Display::fmt(&self.inner, formatter)
-+ Display::fmt(&self.inner, formatter)
- }
- }
-
--impl fmt::Debug for Group {
-+impl Debug for Group {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-- fmt::Debug::fmt(&self.inner, formatter)
-+ Debug::fmt(&self.inner, formatter)
- }
- }
-
- /// An `Punct` is an single punctuation character like `+`, `-` or `#`.
- ///
- /// Multicharacter operators like `+=` are represented as two instances of
- /// `Punct` with different forms of `Spacing` returned.
- #[derive(Clone)]
-@@ -725,23 +752,23 @@ impl Punct {
- /// Configure the span for this punctuation character.
- pub fn set_span(&mut self, span: Span) {
- self.span = span;
- }
- }
-
- /// Prints the punctuation character as a string that should be losslessly
- /// convertible back into the same character.
--impl fmt::Display for Punct {
-+impl Display for Punct {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- self.op.fmt(f)
-+ Display::fmt(&self.op, f)
- }
- }
-
--impl fmt::Debug for Punct {
-+impl Debug for Punct {
- fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
- let mut debug = fmt.debug_struct("Punct");
- debug.field("op", &self.op);
- debug.field("spacing", &self.spacing);
- imp::debug_span_field_if_nontrivial(&mut debug, self.span.inner);
- debug.finish()
- }
- }
-@@ -915,25 +942,25 @@ impl Ord for Ident {
- impl Hash for Ident {
- fn hash<H: Hasher>(&self, hasher: &mut H) {
- self.to_string().hash(hasher)
- }
- }
-
- /// Prints the identifier as a string that should be losslessly convertible back
- /// into the same identifier.
--impl fmt::Display for Ident {
-+impl Display for Ident {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- self.inner.fmt(f)
-+ Display::fmt(&self.inner, f)
- }
- }
-
--impl fmt::Debug for Ident {
-+impl Debug for Ident {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- self.inner.fmt(f)
-+ Debug::fmt(&self.inner, f)
- }
- }
-
- /// A literal string (`"hello"`), byte string (`b"hello"`), character (`'a'`),
- /// byte character (`b'a'`), an integer or floating point number with or without
- /// a suffix (`1`, `1u8`, `2.3`, `2.3f32`).
- ///
- /// Boolean literals like `true` and `false` do not belong here, they are
-@@ -1135,36 +1162,36 @@ impl Literal {
- /// nightly compiler, this method will always return `None`.
- ///
- /// [`proc_macro::Literal::subspan`]: https://doc.rust-lang.org/proc_macro/struct.Literal.html#method.subspan
- pub fn subspan<R: RangeBounds<usize>>(&self, range: R) -> Option<Span> {
- self.inner.subspan(range).map(Span::_new)
- }
- }
-
--impl fmt::Debug for Literal {
-+impl Debug for Literal {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- self.inner.fmt(f)
-+ Debug::fmt(&self.inner, f)
- }
- }
-
--impl fmt::Display for Literal {
-+impl Display for Literal {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- self.inner.fmt(f)
-+ Display::fmt(&self.inner, f)
- }
- }
-
- /// Public implementation details for the `TokenStream` type, such as iterators.
- pub mod token_stream {
-- use std::fmt;
-+ use crate::{imp, TokenTree};
-+ use std::fmt::{self, Debug};
- use std::marker;
- use std::rc::Rc;
-
- pub use crate::TokenStream;
-- use crate::{imp, TokenTree};
-
- /// An iterator over `TokenStream`'s `TokenTree`s.
- ///
- /// The iteration is "shallow", e.g. the iterator doesn't recurse into
- /// delimited groups, and returns whole groups as token trees.
- #[derive(Clone)]
- pub struct IntoIter {
- inner: imp::TokenTreeIter,
-@@ -1174,19 +1201,19 @@ pub mod token_stream {
- impl Iterator for IntoIter {
- type Item = TokenTree;
-
- fn next(&mut self) -> Option<TokenTree> {
- self.inner.next()
- }
- }
-
-- impl fmt::Debug for IntoIter {
-+ impl Debug for IntoIter {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- self.inner.fmt(f)
-+ Debug::fmt(&self.inner, f)
- }
- }
-
- impl IntoIterator for TokenStream {
- type Item = TokenTree;
- type IntoIter = IntoIter;
-
- fn into_iter(self) -> IntoIter {
-diff --git a/third_party/rust/proc-macro2/src/parse.rs b/third_party/rust/proc-macro2/src/parse.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/proc-macro2/src/parse.rs
-@@ -0,0 +1,791 @@
-+use crate::fallback::{
-+ is_ident_continue, is_ident_start, Group, LexError, Literal, Span, TokenStream,
-+};
-+use crate::{Delimiter, Punct, Spacing, TokenTree};
-+use std::str::{Bytes, CharIndices, Chars};
-+use unicode_xid::UnicodeXID;
-+
-+#[derive(Copy, Clone, Eq, PartialEq)]
-+pub(crate) struct Cursor<'a> {
-+ pub rest: &'a str,
-+ #[cfg(span_locations)]
-+ pub off: u32,
-+}
-+
-+impl<'a> Cursor<'a> {
-+ fn advance(&self, bytes: usize) -> Cursor<'a> {
-+ let (_front, rest) = self.rest.split_at(bytes);
-+ Cursor {
-+ rest,
-+ #[cfg(span_locations)]
-+ off: self.off + _front.chars().count() as u32,
-+ }
-+ }
-+
-+ fn starts_with(&self, s: &str) -> bool {
-+ self.rest.starts_with(s)
-+ }
-+
-+ pub(crate) fn is_empty(&self) -> bool {
-+ self.rest.is_empty()
-+ }
-+
-+ fn len(&self) -> usize {
-+ self.rest.len()
-+ }
-+
-+ fn as_bytes(&self) -> &'a [u8] {
-+ self.rest.as_bytes()
-+ }
-+
-+ fn bytes(&self) -> Bytes<'a> {
-+ self.rest.bytes()
-+ }
-+
-+ fn chars(&self) -> Chars<'a> {
-+ self.rest.chars()
-+ }
-+
-+ fn char_indices(&self) -> CharIndices<'a> {
-+ self.rest.char_indices()
-+ }
-+
-+ fn parse(&self, tag: &str) -> Result<Cursor<'a>, LexError> {
-+ if self.starts_with(tag) {
-+ Ok(self.advance(tag.len()))
-+ } else {
-+ Err(LexError)
-+ }
-+ }
-+}
-+
-+type PResult<'a, O> = Result<(Cursor<'a>, O), LexError>;
-+
-+fn skip_whitespace(input: Cursor) -> Cursor {
-+ let mut s = input;
-+
-+ while !s.is_empty() {
-+ let byte = s.as_bytes()[0];
-+ if byte == b'/' {
-+ if s.starts_with("//")
-+ && (!s.starts_with("///") || s.starts_with("////"))
-+ && !s.starts_with("//!")
-+ {
-+ let (cursor, _) = take_until_newline_or_eof(s);
-+ s = cursor;
-+ continue;
-+ } else if s.starts_with("/**/") {
-+ s = s.advance(4);
-+ continue;
-+ } else if s.starts_with("/*")
-+ && (!s.starts_with("/**") || s.starts_with("/***"))
-+ && !s.starts_with("/*!")
-+ {
-+ match block_comment(s) {
-+ Ok((rest, _)) => {
-+ s = rest;
-+ continue;
-+ }
-+ Err(LexError) => return s,
-+ }
-+ }
-+ }
-+ match byte {
-+ b' ' | 0x09..=0x0d => {
-+ s = s.advance(1);
-+ continue;
-+ }
-+ b if b <= 0x7f => {}
-+ _ => {
-+ let ch = s.chars().next().unwrap();
-+ if is_whitespace(ch) {
-+ s = s.advance(ch.len_utf8());
-+ continue;
-+ }
-+ }
-+ }
-+ return s;
-+ }
-+ s
-+}
-+
-+fn block_comment(input: Cursor) -> PResult<&str> {
-+ if !input.starts_with("/*") {
-+ return Err(LexError);
-+ }
-+
-+ let mut depth = 0;
-+ let bytes = input.as_bytes();
-+ let mut i = 0;
-+ let upper = bytes.len() - 1;
-+
-+ while i < upper {
-+ if bytes[i] == b'/' && bytes[i + 1] == b'*' {
-+ depth += 1;
-+ i += 1; // eat '*'
-+ } else if bytes[i] == b'*' && bytes[i + 1] == b'/' {
-+ depth -= 1;
-+ if depth == 0 {
-+ return Ok((input.advance(i + 2), &input.rest[..i + 2]));
-+ }
-+ i += 1; // eat '/'
-+ }
-+ i += 1;
-+ }
-+
-+ Err(LexError)
-+}
-+
-+fn is_whitespace(ch: char) -> bool {
-+ // Rust treats left-to-right mark and right-to-left mark as whitespace
-+ ch.is_whitespace() || ch == '\u{200e}' || ch == '\u{200f}'
-+}
-+
-+fn word_break(input: Cursor) -> Result<Cursor, LexError> {
-+ match input.chars().next() {
-+ Some(ch) if UnicodeXID::is_xid_continue(ch) => Err(LexError),
-+ Some(_) | None => Ok(input),
-+ }
-+}
-+
-+pub(crate) fn token_stream(mut input: Cursor) -> PResult<TokenStream> {
-+ let mut trees = Vec::new();
-+ let mut stack = Vec::new();
-+
-+ loop {
-+ input = skip_whitespace(input);
-+
-+ if let Ok((rest, tt)) = doc_comment(input) {
-+ trees.extend(tt);
-+ input = rest;
-+ continue;
-+ }
-+
-+ #[cfg(span_locations)]
-+ let lo = input.off;
-+
-+ let first = match input.bytes().next() {
-+ Some(first) => first,
-+ None => break,
-+ };
-+
-+ if let Some(open_delimiter) = match first {
-+ b'(' => Some(Delimiter::Parenthesis),
-+ b'[' => Some(Delimiter::Bracket),
-+ b'{' => Some(Delimiter::Brace),
-+ _ => None,
-+ } {
-+ input = input.advance(1);
-+ let frame = (open_delimiter, trees);
-+ #[cfg(span_locations)]
-+ let frame = (lo, frame);
-+ stack.push(frame);
-+ trees = Vec::new();
-+ } else if let Some(close_delimiter) = match first {
-+ b')' => Some(Delimiter::Parenthesis),
-+ b']' => Some(Delimiter::Bracket),
-+ b'}' => Some(Delimiter::Brace),
-+ _ => None,
-+ } {
-+ input = input.advance(1);
-+ let frame = stack.pop().ok_or(LexError)?;
-+ #[cfg(span_locations)]
-+ let (lo, frame) = frame;
-+ let (open_delimiter, outer) = frame;
-+ if open_delimiter != close_delimiter {
-+ return Err(LexError);
-+ }
-+ let mut g = Group::new(open_delimiter, TokenStream { inner: trees });
-+ g.set_span(Span {
-+ #[cfg(span_locations)]
-+ lo,
-+ #[cfg(span_locations)]
-+ hi: input.off,
-+ });
-+ trees = outer;
-+ trees.push(TokenTree::Group(crate::Group::_new_stable(g)));
-+ } else {
-+ let (rest, mut tt) = leaf_token(input)?;
-+ tt.set_span(crate::Span::_new_stable(Span {
-+ #[cfg(span_locations)]
-+ lo,
-+ #[cfg(span_locations)]
-+ hi: rest.off,
-+ }));
-+ trees.push(tt);
-+ input = rest;
-+ }
-+ }
-+
-+ if stack.is_empty() {
-+ Ok((input, TokenStream { inner: trees }))
-+ } else {
-+ Err(LexError)
-+ }
-+}
-+
-+fn leaf_token(input: Cursor) -> PResult<TokenTree> {
-+ if let Ok((input, l)) = literal(input) {
-+ // must be parsed before ident
-+ Ok((input, TokenTree::Literal(crate::Literal::_new_stable(l))))
-+ } else if let Ok((input, p)) = op(input) {
-+ Ok((input, TokenTree::Punct(p)))
-+ } else if let Ok((input, i)) = ident(input) {
-+ Ok((input, TokenTree::Ident(i)))
-+ } else {
-+ Err(LexError)
-+ }
-+}
-+
-+fn ident(input: Cursor) -> PResult<crate::Ident> {
-+ let raw = input.starts_with("r#");
-+ let rest = input.advance((raw as usize) << 1);
-+
-+ let (rest, sym) = ident_not_raw(rest)?;
-+
-+ if !raw {
-+ let ident = crate::Ident::new(sym, crate::Span::call_site());
-+ return Ok((rest, ident));
-+ }
-+
-+ if sym == "_" {
-+ return Err(LexError);
-+ }
-+
-+ let ident = crate::Ident::_new_raw(sym, crate::Span::call_site());
-+ Ok((rest, ident))
-+}
-+
-+fn ident_not_raw(input: Cursor) -> PResult<&str> {
-+ let mut chars = input.char_indices();
-+
-+ match chars.next() {
-+ Some((_, ch)) if is_ident_start(ch) => {}
-+ _ => return Err(LexError),
-+ }
-+
-+ let mut end = input.len();
-+ for (i, ch) in chars {
-+ if !is_ident_continue(ch) {
-+ end = i;
-+ break;
-+ }
-+ }
-+
-+ Ok((input.advance(end), &input.rest[..end]))
-+}
-+
-+fn literal(input: Cursor) -> PResult<Literal> {
-+ match literal_nocapture(input) {
-+ Ok(a) => {
-+ let end = input.len() - a.len();
-+ Ok((a, Literal::_new(input.rest[..end].to_string())))
-+ }
-+ Err(LexError) => Err(LexError),
-+ }
-+}
-+
-+fn literal_nocapture(input: Cursor) -> Result<Cursor, LexError> {
-+ if let Ok(ok) = string(input) {
-+ Ok(ok)
-+ } else if let Ok(ok) = byte_string(input) {
-+ Ok(ok)
-+ } else if let Ok(ok) = byte(input) {
-+ Ok(ok)
-+ } else if let Ok(ok) = character(input) {
-+ Ok(ok)
-+ } else if let Ok(ok) = float(input) {
-+ Ok(ok)
-+ } else if let Ok(ok) = int(input) {
-+ Ok(ok)
-+ } else {
-+ Err(LexError)
-+ }
-+}
-+
-+fn literal_suffix(input: Cursor) -> Cursor {
-+ match ident_not_raw(input) {
-+ Ok((input, _)) => input,
-+ Err(LexError) => input,
-+ }
-+}
-+
-+fn string(input: Cursor) -> Result<Cursor, LexError> {
-+ if let Ok(input) = input.parse("\"") {
-+ cooked_string(input)
-+ } else if let Ok(input) = input.parse("r") {
-+ raw_string(input)
-+ } else {
-+ Err(LexError)
-+ }
-+}
-+
-+fn cooked_string(input: Cursor) -> Result<Cursor, LexError> {
-+ let mut chars = input.char_indices().peekable();
-+
-+ while let Some((i, ch)) = chars.next() {
-+ match ch {
-+ '"' => {
-+ let input = input.advance(i + 1);
-+ return Ok(literal_suffix(input));
-+ }
-+ '\r' => {
-+ if let Some((_, '\n')) = chars.next() {
-+ // ...
-+ } else {
-+ break;
-+ }
-+ }
-+ '\\' => match chars.next() {
-+ Some((_, 'x')) => {
-+ if !backslash_x_char(&mut chars) {
-+ break;
-+ }
-+ }
-+ Some((_, 'n')) | Some((_, 'r')) | Some((_, 't')) | Some((_, '\\'))
-+ | Some((_, '\'')) | Some((_, '"')) | Some((_, '0')) => {}
-+ Some((_, 'u')) => {
-+ if !backslash_u(&mut chars) {
-+ break;
-+ }
-+ }
-+ Some((_, '\n')) | Some((_, '\r')) => {
-+ while let Some(&(_, ch)) = chars.peek() {
-+ if ch.is_whitespace() {
-+ chars.next();
-+ } else {
-+ break;
-+ }
-+ }
-+ }
-+ _ => break,
-+ },
-+ _ch => {}
-+ }
-+ }
-+ Err(LexError)
-+}
-+
-+fn byte_string(input: Cursor) -> Result<Cursor, LexError> {
-+ if let Ok(input) = input.parse("b\"") {
-+ cooked_byte_string(input)
-+ } else if let Ok(input) = input.parse("br") {
-+ raw_string(input)
-+ } else {
-+ Err(LexError)
-+ }
-+}
-+
-+fn cooked_byte_string(mut input: Cursor) -> Result<Cursor, LexError> {
-+ let mut bytes = input.bytes().enumerate();
-+ 'outer: while let Some((offset, b)) = bytes.next() {
-+ match b {
-+ b'"' => {
-+ let input = input.advance(offset + 1);
-+ return Ok(literal_suffix(input));
-+ }
-+ b'\r' => {
-+ if let Some((_, b'\n')) = bytes.next() {
-+ // ...
-+ } else {
-+ break;
-+ }
-+ }
-+ b'\\' => match bytes.next() {
-+ Some((_, b'x')) => {
-+ if !backslash_x_byte(&mut bytes) {
-+ break;
-+ }
-+ }
-+ Some((_, b'n')) | Some((_, b'r')) | Some((_, b't')) | Some((_, b'\\'))
-+ | Some((_, b'0')) | Some((_, b'\'')) | Some((_, b'"')) => {}
-+ Some((newline, b'\n')) | Some((newline, b'\r')) => {
-+ let rest = input.advance(newline + 1);
-+ for (offset, ch) in rest.char_indices() {
-+ if !ch.is_whitespace() {
-+ input = rest.advance(offset);
-+ bytes = input.bytes().enumerate();
-+ continue 'outer;
-+ }
-+ }
-+ break;
-+ }
-+ _ => break,
-+ },
-+ b if b < 0x80 => {}
-+ _ => break,
-+ }
-+ }
-+ Err(LexError)
-+}
-+
-+fn raw_string(input: Cursor) -> Result<Cursor, LexError> {
-+ let mut chars = input.char_indices();
-+ let mut n = 0;
-+ while let Some((i, ch)) = chars.next() {
-+ match ch {
-+ '"' => {
-+ n = i;
-+ break;
-+ }
-+ '#' => {}
-+ _ => return Err(LexError),
-+ }
-+ }
-+ for (i, ch) in chars {
-+ match ch {
-+ '"' if input.rest[i + 1..].starts_with(&input.rest[..n]) => {
-+ let rest = input.advance(i + 1 + n);
-+ return Ok(literal_suffix(rest));
-+ }
-+ '\r' => {}
-+ _ => {}
-+ }
-+ }
-+ Err(LexError)
-+}
-+
-+fn byte(input: Cursor) -> Result<Cursor, LexError> {
-+ let input = input.parse("b'")?;
-+ let mut bytes = input.bytes().enumerate();
-+ let ok = match bytes.next().map(|(_, b)| b) {
-+ Some(b'\\') => match bytes.next().map(|(_, b)| b) {
-+ Some(b'x') => backslash_x_byte(&mut bytes),
-+ Some(b'n') | Some(b'r') | Some(b't') | Some(b'\\') | Some(b'0') | Some(b'\'')
-+ | Some(b'"') => true,
-+ _ => false,
-+ },
-+ b => b.is_some(),
-+ };
-+ if !ok {
-+ return Err(LexError);
-+ }
-+ let (offset, _) = bytes.next().ok_or(LexError)?;
-+ if !input.chars().as_str().is_char_boundary(offset) {
-+ return Err(LexError);
-+ }
-+ let input = input.advance(offset).parse("'")?;
-+ Ok(literal_suffix(input))
-+}
-+
-+fn character(input: Cursor) -> Result<Cursor, LexError> {
-+ let input = input.parse("'")?;
-+ let mut chars = input.char_indices();
-+ let ok = match chars.next().map(|(_, ch)| ch) {
-+ Some('\\') => match chars.next().map(|(_, ch)| ch) {
-+ Some('x') => backslash_x_char(&mut chars),
-+ Some('u') => backslash_u(&mut chars),
-+ Some('n') | Some('r') | Some('t') | Some('\\') | Some('0') | Some('\'') | Some('"') => {
-+ true
-+ }
-+ _ => false,
-+ },
-+ ch => ch.is_some(),
-+ };
-+ if !ok {
-+ return Err(LexError);
-+ }
-+ let (idx, _) = chars.next().ok_or(LexError)?;
-+ let input = input.advance(idx).parse("'")?;
-+ Ok(literal_suffix(input))
-+}
-+
-+macro_rules! next_ch {
-+ ($chars:ident @ $pat:pat $(| $rest:pat)*) => {
-+ match $chars.next() {
-+ Some((_, ch)) => match ch {
-+ $pat $(| $rest)* => ch,
-+ _ => return false,
-+ },
-+ None => return false,
-+ }
-+ };
-+}
-+
-+fn backslash_x_char<I>(chars: &mut I) -> bool
-+where
-+ I: Iterator<Item = (usize, char)>,
-+{
-+ next_ch!(chars @ '0'..='7');
-+ next_ch!(chars @ '0'..='9' | 'a'..='f' | 'A'..='F');
-+ true
-+}
-+
-+fn backslash_x_byte<I>(chars: &mut I) -> bool
-+where
-+ I: Iterator<Item = (usize, u8)>,
-+{
-+ next_ch!(chars @ b'0'..=b'9' | b'a'..=b'f' | b'A'..=b'F');
-+ next_ch!(chars @ b'0'..=b'9' | b'a'..=b'f' | b'A'..=b'F');
-+ true
-+}
-+
-+fn backslash_u<I>(chars: &mut I) -> bool
-+where
-+ I: Iterator<Item = (usize, char)>,
-+{
-+ next_ch!(chars @ '{');
-+ next_ch!(chars @ '0'..='9' | 'a'..='f' | 'A'..='F');
-+ loop {
-+ let c = next_ch!(chars @ '0'..='9' | 'a'..='f' | 'A'..='F' | '_' | '}');
-+ if c == '}' {
-+ return true;
-+ }
-+ }
-+}
-+
-+fn float(input: Cursor) -> Result<Cursor, LexError> {
-+ let mut rest = float_digits(input)?;
-+ if let Some(ch) = rest.chars().next() {
-+ if is_ident_start(ch) {
-+ rest = ident_not_raw(rest)?.0;
-+ }
-+ }
-+ word_break(rest)
-+}
-+
-+fn float_digits(input: Cursor) -> Result<Cursor, LexError> {
-+ let mut chars = input.chars().peekable();
-+ match chars.next() {
-+ Some(ch) if ch >= '0' && ch <= '9' => {}
-+ _ => return Err(LexError),
-+ }
-+
-+ let mut len = 1;
-+ let mut has_dot = false;
-+ let mut has_exp = false;
-+ while let Some(&ch) = chars.peek() {
-+ match ch {
-+ '0'..='9' | '_' => {
-+ chars.next();
-+ len += 1;
-+ }
-+ '.' => {
-+ if has_dot {
-+ break;
-+ }
-+ chars.next();
-+ if chars
-+ .peek()
-+ .map(|&ch| ch == '.' || is_ident_start(ch))
-+ .unwrap_or(false)
-+ {
-+ return Err(LexError);
-+ }
-+ len += 1;
-+ has_dot = true;
-+ }
-+ 'e' | 'E' => {
-+ chars.next();
-+ len += 1;
-+ has_exp = true;
-+ break;
-+ }
-+ _ => break,
-+ }
-+ }
-+
-+ let rest = input.advance(len);
-+ if !(has_dot || has_exp || rest.starts_with("f32") || rest.starts_with("f64")) {
-+ return Err(LexError);
-+ }
-+
-+ if has_exp {
-+ let mut has_exp_value = false;
-+ while let Some(&ch) = chars.peek() {
-+ match ch {
-+ '+' | '-' => {
-+ if has_exp_value {
-+ break;
-+ }
-+ chars.next();
-+ len += 1;
-+ }
-+ '0'..='9' => {
-+ chars.next();
-+ len += 1;
-+ has_exp_value = true;
-+ }
-+ '_' => {
-+ chars.next();
-+ len += 1;
-+ }
-+ _ => break,
-+ }
-+ }
-+ if !has_exp_value {
-+ return Err(LexError);
-+ }
-+ }
-+
-+ Ok(input.advance(len))
-+}
-+
-+fn int(input: Cursor) -> Result<Cursor, LexError> {
-+ let mut rest = digits(input)?;
-+ if let Some(ch) = rest.chars().next() {
-+ if is_ident_start(ch) {
-+ rest = ident_not_raw(rest)?.0;
-+ }
-+ }
-+ word_break(rest)
-+}
-+
-+fn digits(mut input: Cursor) -> Result<Cursor, LexError> {
-+ let base = if input.starts_with("0x") {
-+ input = input.advance(2);
-+ 16
-+ } else if input.starts_with("0o") {
-+ input = input.advance(2);
-+ 8
-+ } else if input.starts_with("0b") {
-+ input = input.advance(2);
-+ 2
-+ } else {
-+ 10
-+ };
-+
-+ let mut len = 0;
-+ let mut empty = true;
-+ for b in input.bytes() {
-+ let digit = match b {
-+ b'0'..=b'9' => (b - b'0') as u64,
-+ b'a'..=b'f' => 10 + (b - b'a') as u64,
-+ b'A'..=b'F' => 10 + (b - b'A') as u64,
-+ b'_' => {
-+ if empty && base == 10 {
-+ return Err(LexError);
-+ }
-+ len += 1;
-+ continue;
-+ }
-+ _ => break,
-+ };
-+ if digit >= base {
-+ return Err(LexError);
-+ }
-+ len += 1;
-+ empty = false;
-+ }
-+ if empty {
-+ Err(LexError)
-+ } else {
-+ Ok(input.advance(len))
-+ }
-+}
-+
-+fn op(input: Cursor) -> PResult<Punct> {
-+ match op_char(input) {
-+ Ok((rest, '\'')) => {
-+ ident(rest)?;
-+ Ok((rest, Punct::new('\'', Spacing::Joint)))
-+ }
-+ Ok((rest, ch)) => {
-+ let kind = match op_char(rest) {
-+ Ok(_) => Spacing::Joint,
-+ Err(LexError) => Spacing::Alone,
-+ };
-+ Ok((rest, Punct::new(ch, kind)))
-+ }
-+ Err(LexError) => Err(LexError),
-+ }
-+}
-+
-+fn op_char(input: Cursor) -> PResult<char> {
-+ if input.starts_with("//") || input.starts_with("/*") {
-+ // Do not accept `/` of a comment as an op.
-+ return Err(LexError);
-+ }
-+
-+ let mut chars = input.chars();
-+ let first = match chars.next() {
-+ Some(ch) => ch,
-+ None => {
-+ return Err(LexError);
-+ }
-+ };
-+ let recognized = "~!@#$%^&*-=+|;:,<.>/?'";
-+ if recognized.contains(first) {
-+ Ok((input.advance(first.len_utf8()), first))
-+ } else {
-+ Err(LexError)
-+ }
-+}
-+
-+fn doc_comment(input: Cursor) -> PResult<Vec<TokenTree>> {
-+ #[cfg(span_locations)]
-+ let lo = input.off;
-+ let (rest, (comment, inner)) = doc_comment_contents(input)?;
-+ let span = crate::Span::_new_stable(Span {
-+ #[cfg(span_locations)]
-+ lo,
-+ #[cfg(span_locations)]
-+ hi: rest.off,
-+ });
-+
-+ let mut scan_for_bare_cr = comment;
-+ while let Some(cr) = scan_for_bare_cr.find('\r') {
-+ let rest = &scan_for_bare_cr[cr + 1..];
-+ if !rest.starts_with('\n') {
-+ return Err(LexError);
-+ }
-+ scan_for_bare_cr = rest;
-+ }
-+
-+ let mut trees = Vec::new();
-+ trees.push(TokenTree::Punct(Punct::new('#', Spacing::Alone)));
-+ if inner {
-+ trees.push(Punct::new('!', Spacing::Alone).into());
-+ }
-+ let mut stream = vec![
-+ TokenTree::Ident(crate::Ident::new("doc", span)),
-+ TokenTree::Punct(Punct::new('=', Spacing::Alone)),
-+ TokenTree::Literal(crate::Literal::string(comment)),
-+ ];
-+ for tt in stream.iter_mut() {
-+ tt.set_span(span);
-+ }
-+ let group = Group::new(Delimiter::Bracket, stream.into_iter().collect());
-+ trees.push(crate::Group::_new_stable(group).into());
-+ for tt in trees.iter_mut() {
-+ tt.set_span(span);
-+ }
-+ Ok((rest, trees))
-+}
-+
-+fn doc_comment_contents(input: Cursor) -> PResult<(&str, bool)> {
-+ if input.starts_with("//!") {
-+ let input = input.advance(3);
-+ let (input, s) = take_until_newline_or_eof(input);
-+ Ok((input, (s, true)))
-+ } else if input.starts_with("/*!") {
-+ let (input, s) = block_comment(input)?;
-+ Ok((input, (&s[3..s.len() - 2], true)))
-+ } else if input.starts_with("///") {
-+ let input = input.advance(3);
-+ if input.starts_with("/") {
-+ return Err(LexError);
-+ }
-+ let (input, s) = take_until_newline_or_eof(input);
-+ Ok((input, (s, false)))
-+ } else if input.starts_with("/**") && !input.rest[3..].starts_with('*') {
-+ let (input, s) = block_comment(input)?;
-+ Ok((input, (&s[3..s.len() - 2], false)))
-+ } else {
-+ Err(LexError)
-+ }
-+}
-+
-+fn take_until_newline_or_eof(input: Cursor) -> (Cursor, &str) {
-+ let chars = input.char_indices();
-+
-+ for (i, ch) in chars {
-+ if ch == '\n' {
-+ return (input.advance(i), &input.rest[..i]);
-+ } else if ch == '\r' && input.rest[i + 1..].starts_with('\n') {
-+ return (input.advance(i + 1), &input.rest[..i]);
-+ }
-+ }
-+
-+ (input.advance(input.len()), input.rest)
-+}
-diff --git a/third_party/rust/proc-macro2/src/strnom.rs b/third_party/rust/proc-macro2/src/strnom.rs
-deleted file mode 100644
---- a/third_party/rust/proc-macro2/src/strnom.rs
-+++ /dev/null
-@@ -1,391 +0,0 @@
--//! Adapted from [`nom`](https://github.com/Geal/nom).
--
--use crate::fallback::LexError;
--use std::str::{Bytes, CharIndices, Chars};
--use unicode_xid::UnicodeXID;
--
--#[derive(Copy, Clone, Eq, PartialEq)]
--pub struct Cursor<'a> {
-- pub rest: &'a str,
-- #[cfg(span_locations)]
-- pub off: u32,
--}
--
--impl<'a> Cursor<'a> {
-- #[cfg(not(span_locations))]
-- pub fn advance(&self, amt: usize) -> Cursor<'a> {
-- Cursor {
-- rest: &self.rest[amt..],
-- }
-- }
-- #[cfg(span_locations)]
-- pub fn advance(&self, amt: usize) -> Cursor<'a> {
-- Cursor {
-- rest: &self.rest[amt..],
-- off: self.off + (amt as u32),
-- }
-- }
--
-- pub fn find(&self, p: char) -> Option<usize> {
-- self.rest.find(p)
-- }
--
-- pub fn starts_with(&self, s: &str) -> bool {
-- self.rest.starts_with(s)
-- }
--
-- pub fn is_empty(&self) -> bool {
-- self.rest.is_empty()
-- }
--
-- pub fn len(&self) -> usize {
-- self.rest.len()
-- }
--
-- pub fn as_bytes(&self) -> &'a [u8] {
-- self.rest.as_bytes()
-- }
--
-- pub fn bytes(&self) -> Bytes<'a> {
-- self.rest.bytes()
-- }
--
-- pub fn chars(&self) -> Chars<'a> {
-- self.rest.chars()
-- }
--
-- pub fn char_indices(&self) -> CharIndices<'a> {
-- self.rest.char_indices()
-- }
--}
--
--pub type PResult<'a, O> = Result<(Cursor<'a>, O), LexError>;
--
--pub fn whitespace(input: Cursor) -> PResult<()> {
-- if input.is_empty() {
-- return Err(LexError);
-- }
--
-- let bytes = input.as_bytes();
-- let mut i = 0;
-- while i < bytes.len() {
-- let s = input.advance(i);
-- if bytes[i] == b'/' {
-- if s.starts_with("//")
-- && (!s.starts_with("///") || s.starts_with("////"))
-- && !s.starts_with("//!")
-- {
-- if let Some(len) = s.find('\n') {
-- i += len + 1;
-- continue;
-- }
-- break;
-- } else if s.starts_with("/**/") {
-- i += 4;
-- continue;
-- } else if s.starts_with("/*")
-- && (!s.starts_with("/**") || s.starts_with("/***"))
-- && !s.starts_with("/*!")
-- {
-- let (_, com) = block_comment(s)?;
-- i += com.len();
-- continue;
-- }
-- }
-- match bytes[i] {
-- b' ' | 0x09..=0x0d => {
-- i += 1;
-- continue;
-- }
-- b if b <= 0x7f => {}
-- _ => {
-- let ch = s.chars().next().unwrap();
-- if is_whitespace(ch) {
-- i += ch.len_utf8();
-- continue;
-- }
-- }
-- }
-- return if i > 0 { Ok((s, ())) } else { Err(LexError) };
-- }
-- Ok((input.advance(input.len()), ()))
--}
--
--pub fn block_comment(input: Cursor) -> PResult<&str> {
-- if !input.starts_with("/*") {
-- return Err(LexError);
-- }
--
-- let mut depth = 0;
-- let bytes = input.as_bytes();
-- let mut i = 0;
-- let upper = bytes.len() - 1;
-- while i < upper {
-- if bytes[i] == b'/' && bytes[i + 1] == b'*' {
-- depth += 1;
-- i += 1; // eat '*'
-- } else if bytes[i] == b'*' && bytes[i + 1] == b'/' {
-- depth -= 1;
-- if depth == 0 {
-- return Ok((input.advance(i + 2), &input.rest[..i + 2]));
-- }
-- i += 1; // eat '/'
-- }
-- i += 1;
-- }
-- Err(LexError)
--}
--
--pub fn skip_whitespace(input: Cursor) -> Cursor {
-- match whitespace(input) {
-- Ok((rest, _)) => rest,
-- Err(LexError) => input,
-- }
--}
--
--fn is_whitespace(ch: char) -> bool {
-- // Rust treats left-to-right mark and right-to-left mark as whitespace
-- ch.is_whitespace() || ch == '\u{200e}' || ch == '\u{200f}'
--}
--
--pub fn word_break(input: Cursor) -> PResult<()> {
-- match input.chars().next() {
-- Some(ch) if UnicodeXID::is_xid_continue(ch) => Err(LexError),
-- Some(_) | None => Ok((input, ())),
-- }
--}
--
--macro_rules! named {
-- ($name:ident -> $o:ty, $submac:ident!( $($args:tt)* )) => {
-- fn $name<'a>(i: Cursor<'a>) -> $crate::strnom::PResult<'a, $o> {
-- $submac!(i, $($args)*)
-- }
-- };
--}
--
--macro_rules! alt {
-- ($i:expr, $e:ident | $($rest:tt)*) => {
-- alt!($i, call!($e) | $($rest)*)
-- };
--
-- ($i:expr, $subrule:ident!( $($args:tt)*) | $($rest:tt)*) => {
-- match $subrule!($i, $($args)*) {
-- res @ Ok(_) => res,
-- _ => alt!($i, $($rest)*)
-- }
-- };
--
-- ($i:expr, $subrule:ident!( $($args:tt)* ) => { $gen:expr } | $($rest:tt)+) => {
-- match $subrule!($i, $($args)*) {
-- Ok((i, o)) => Ok((i, $gen(o))),
-- Err(LexError) => alt!($i, $($rest)*)
-- }
-- };
--
-- ($i:expr, $e:ident => { $gen:expr } | $($rest:tt)*) => {
-- alt!($i, call!($e) => { $gen } | $($rest)*)
-- };
--
-- ($i:expr, $e:ident => { $gen:expr }) => {
-- alt!($i, call!($e) => { $gen })
-- };
--
-- ($i:expr, $subrule:ident!( $($args:tt)* ) => { $gen:expr }) => {
-- match $subrule!($i, $($args)*) {
-- Ok((i, o)) => Ok((i, $gen(o))),
-- Err(LexError) => Err(LexError),
-- }
-- };
--
-- ($i:expr, $e:ident) => {
-- alt!($i, call!($e))
-- };
--
-- ($i:expr, $subrule:ident!( $($args:tt)*)) => {
-- $subrule!($i, $($args)*)
-- };
--}
--
--macro_rules! do_parse {
-- ($i:expr, ( $($rest:expr),* )) => {
-- Ok(($i, ( $($rest),* )))
-- };
--
-- ($i:expr, $e:ident >> $($rest:tt)*) => {
-- do_parse!($i, call!($e) >> $($rest)*)
-- };
--
-- ($i:expr, $submac:ident!( $($args:tt)* ) >> $($rest:tt)*) => {
-- match $submac!($i, $($args)*) {
-- Err(LexError) => Err(LexError),
-- Ok((i, _)) => do_parse!(i, $($rest)*),
-- }
-- };
--
-- ($i:expr, $field:ident : $e:ident >> $($rest:tt)*) => {
-- do_parse!($i, $field: call!($e) >> $($rest)*)
-- };
--
-- ($i:expr, $field:ident : $submac:ident!( $($args:tt)* ) >> $($rest:tt)*) => {
-- match $submac!($i, $($args)*) {
-- Err(LexError) => Err(LexError),
-- Ok((i, o)) => {
-- let $field = o;
-- do_parse!(i, $($rest)*)
-- },
-- }
-- };
--}
--
--macro_rules! peek {
-- ($i:expr, $submac:ident!( $($args:tt)* )) => {
-- match $submac!($i, $($args)*) {
-- Ok((_, o)) => Ok(($i, o)),
-- Err(LexError) => Err(LexError),
-- }
-- };
--}
--
--macro_rules! call {
-- ($i:expr, $fun:expr $(, $args:expr)*) => {
-- $fun($i $(, $args)*)
-- };
--}
--
--macro_rules! option {
-- ($i:expr, $f:expr) => {
-- match $f($i) {
-- Ok((i, o)) => Ok((i, Some(o))),
-- Err(LexError) => Ok(($i, None)),
-- }
-- };
--}
--
--macro_rules! take_until_newline_or_eof {
-- ($i:expr,) => {{
-- if $i.len() == 0 {
-- Ok(($i, ""))
-- } else {
-- match $i.find('\n') {
-- Some(i) => Ok(($i.advance(i), &$i.rest[..i])),
-- None => Ok(($i.advance($i.len()), &$i.rest[..$i.len()])),
-- }
-- }
-- }};
--}
--
--macro_rules! tuple {
-- ($i:expr, $($rest:tt)*) => {
-- tuple_parser!($i, (), $($rest)*)
-- };
--}
--
--/// Do not use directly. Use `tuple!`.
--macro_rules! tuple_parser {
-- ($i:expr, ($($parsed:tt),*), $e:ident, $($rest:tt)*) => {
-- tuple_parser!($i, ($($parsed),*), call!($e), $($rest)*)
-- };
--
-- ($i:expr, (), $submac:ident!( $($args:tt)* ), $($rest:tt)*) => {
-- match $submac!($i, $($args)*) {
-- Err(LexError) => Err(LexError),
-- Ok((i, o)) => tuple_parser!(i, (o), $($rest)*),
-- }
-- };
--
-- ($i:expr, ($($parsed:tt)*), $submac:ident!( $($args:tt)* ), $($rest:tt)*) => {
-- match $submac!($i, $($args)*) {
-- Err(LexError) => Err(LexError),
-- Ok((i, o)) => tuple_parser!(i, ($($parsed)* , o), $($rest)*),
-- }
-- };
--
-- ($i:expr, ($($parsed:tt),*), $e:ident) => {
-- tuple_parser!($i, ($($parsed),*), call!($e))
-- };
--
-- ($i:expr, (), $submac:ident!( $($args:tt)* )) => {
-- $submac!($i, $($args)*)
-- };
--
-- ($i:expr, ($($parsed:expr),*), $submac:ident!( $($args:tt)* )) => {
-- match $submac!($i, $($args)*) {
-- Err(LexError) => Err(LexError),
-- Ok((i, o)) => Ok((i, ($($parsed),*, o)))
-- }
-- };
--
-- ($i:expr, ($($parsed:expr),*)) => {
-- Ok(($i, ($($parsed),*)))
-- };
--}
--
--macro_rules! not {
-- ($i:expr, $submac:ident!( $($args:tt)* )) => {
-- match $submac!($i, $($args)*) {
-- Ok((_, _)) => Err(LexError),
-- Err(LexError) => Ok(($i, ())),
-- }
-- };
--}
--
--macro_rules! tag {
-- ($i:expr, $tag:expr) => {
-- if $i.starts_with($tag) {
-- Ok(($i.advance($tag.len()), &$i.rest[..$tag.len()]))
-- } else {
-- Err(LexError)
-- }
-- };
--}
--
--macro_rules! punct {
-- ($i:expr, $punct:expr) => {
-- $crate::strnom::punct($i, $punct)
-- };
--}
--
--/// Do not use directly. Use `punct!`.
--pub fn punct<'a>(input: Cursor<'a>, token: &'static str) -> PResult<'a, &'a str> {
-- let input = skip_whitespace(input);
-- if input.starts_with(token) {
-- Ok((input.advance(token.len()), token))
-- } else {
-- Err(LexError)
-- }
--}
--
--macro_rules! preceded {
-- ($i:expr, $submac:ident!( $($args:tt)* ), $submac2:ident!( $($args2:tt)* )) => {
-- match tuple!($i, $submac!($($args)*), $submac2!($($args2)*)) {
-- Ok((remaining, (_, o))) => Ok((remaining, o)),
-- Err(LexError) => Err(LexError),
-- }
-- };
--
-- ($i:expr, $submac:ident!( $($args:tt)* ), $g:expr) => {
-- preceded!($i, $submac!($($args)*), call!($g))
-- };
--}
--
--macro_rules! delimited {
-- ($i:expr, $submac:ident!( $($args:tt)* ), $($rest:tt)+) => {
-- match tuple_parser!($i, (), $submac!($($args)*), $($rest)*) {
-- Err(LexError) => Err(LexError),
-- Ok((i1, (_, o, _))) => Ok((i1, o))
-- }
-- };
--}
--
--macro_rules! map {
-- ($i:expr, $submac:ident!( $($args:tt)* ), $g:expr) => {
-- match $submac!($i, $($args)*) {
-- Err(LexError) => Err(LexError),
-- Ok((i, o)) => Ok((i, call!(o, $g)))
-- }
-- };
--
-- ($i:expr, $f:expr, $g:expr) => {
-- map!($i, call!($f), $g)
-- };
--}
-diff --git a/third_party/rust/proc-macro2/src/wrapper.rs b/third_party/rust/proc-macro2/src/wrapper.rs
---- a/third_party/rust/proc-macro2/src/wrapper.rs
-+++ b/third_party/rust/proc-macro2/src/wrapper.rs
-@@ -1,96 +1,39 @@
--use std::fmt;
--use std::iter;
-+use crate::detection::inside_proc_macro;
-+use crate::{fallback, Delimiter, Punct, Spacing, TokenTree};
-+use std::fmt::{self, Debug, Display};
-+use std::iter::FromIterator;
- use std::ops::RangeBounds;
--use std::panic::{self, PanicInfo};
-+use std::panic;
- #[cfg(super_unstable)]
- use std::path::PathBuf;
- use std::str::FromStr;
-
--use crate::{fallback, Delimiter, Punct, Spacing, TokenTree};
--
- #[derive(Clone)]
--pub enum TokenStream {
-+pub(crate) enum TokenStream {
- Compiler(DeferredTokenStream),
- Fallback(fallback::TokenStream),
- }
-
- // Work around https://github.com/rust-lang/rust/issues/65080.
- // In `impl Extend<TokenTree> for TokenStream` which is used heavily by quote,
- // we hold on to the appended tokens and do proc_macro::TokenStream::extend as
- // late as possible to batch together consecutive uses of the Extend impl.
- #[derive(Clone)]
--pub struct DeferredTokenStream {
-+pub(crate) struct DeferredTokenStream {
- stream: proc_macro::TokenStream,
- extra: Vec<proc_macro::TokenTree>,
- }
-
--pub enum LexError {
-+pub(crate) enum LexError {
- Compiler(proc_macro::LexError),
- Fallback(fallback::LexError),
- }
-
--fn nightly_works() -> bool {
-- use std::sync::atomic::*;
-- use std::sync::Once;
--
-- static WORKS: AtomicUsize = AtomicUsize::new(0);
-- static INIT: Once = Once::new();
--
-- match WORKS.load(Ordering::SeqCst) {
-- 1 => return false,
-- 2 => return true,
-- _ => {}
-- }
--
-- // Swap in a null panic hook to avoid printing "thread panicked" to stderr,
-- // then use catch_unwind to determine whether the compiler's proc_macro is
-- // working. When proc-macro2 is used from outside of a procedural macro all
-- // of the proc_macro crate's APIs currently panic.
-- //
-- // The Once is to prevent the possibility of this ordering:
-- //
-- // thread 1 calls take_hook, gets the user's original hook
-- // thread 1 calls set_hook with the null hook
-- // thread 2 calls take_hook, thinks null hook is the original hook
-- // thread 2 calls set_hook with the null hook
-- // thread 1 calls set_hook with the actual original hook
-- // thread 2 calls set_hook with what it thinks is the original hook
-- //
-- // in which the user's hook has been lost.
-- //
-- // There is still a race condition where a panic in a different thread can
-- // happen during the interval that the user's original panic hook is
-- // unregistered such that their hook is incorrectly not called. This is
-- // sufficiently unlikely and less bad than printing panic messages to stderr
-- // on correct use of this crate. Maybe there is a libstd feature request
-- // here. For now, if a user needs to guarantee that this failure mode does
-- // not occur, they need to call e.g. `proc_macro2::Span::call_site()` from
-- // the main thread before launching any other threads.
-- INIT.call_once(|| {
-- type PanicHook = dyn Fn(&PanicInfo) + Sync + Send + 'static;
--
-- let null_hook: Box<PanicHook> = Box::new(|_panic_info| { /* ignore */ });
-- let sanity_check = &*null_hook as *const PanicHook;
-- let original_hook = panic::take_hook();
-- panic::set_hook(null_hook);
--
-- let works = panic::catch_unwind(|| proc_macro::Span::call_site()).is_ok();
-- WORKS.store(works as usize + 1, Ordering::SeqCst);
--
-- let hopefully_null_hook = panic::take_hook();
-- panic::set_hook(original_hook);
-- if sanity_check != &*hopefully_null_hook {
-- panic!("observed race condition in proc_macro2::nightly_works");
-- }
-- });
-- nightly_works()
--}
--
- fn mismatch() -> ! {
- panic!("stable/nightly mismatch")
- }
-
- impl DeferredTokenStream {
- fn new(stream: proc_macro::TokenStream) -> Self {
- DeferredTokenStream {
- stream,
-@@ -98,28 +41,33 @@ impl DeferredTokenStream {
- }
- }
-
- fn is_empty(&self) -> bool {
- self.stream.is_empty() && self.extra.is_empty()
- }
-
- fn evaluate_now(&mut self) {
-- self.stream.extend(self.extra.drain(..));
-+ // If-check provides a fast short circuit for the common case of `extra`
-+ // being empty, which saves a round trip over the proc macro bridge.
-+ // Improves macro expansion time in winrt by 6% in debug mode.
-+ if !self.extra.is_empty() {
-+ self.stream.extend(self.extra.drain(..));
-+ }
- }
-
- fn into_token_stream(mut self) -> proc_macro::TokenStream {
- self.evaluate_now();
- self.stream
- }
- }
-
- impl TokenStream {
- pub fn new() -> TokenStream {
-- if nightly_works() {
-+ if inside_proc_macro() {
- TokenStream::Compiler(DeferredTokenStream::new(proc_macro::TokenStream::new()))
- } else {
- TokenStream::Fallback(fallback::TokenStream::new())
- }
- }
-
- pub fn is_empty(&self) -> bool {
- match self {
-@@ -142,31 +90,37 @@ impl TokenStream {
- }
- }
- }
-
- impl FromStr for TokenStream {
- type Err = LexError;
-
- fn from_str(src: &str) -> Result<TokenStream, LexError> {
-- if nightly_works() {
-+ if inside_proc_macro() {
- Ok(TokenStream::Compiler(DeferredTokenStream::new(
-- src.parse()?,
-+ proc_macro_parse(src)?,
- )))
- } else {
- Ok(TokenStream::Fallback(src.parse()?))
- }
- }
- }
-
--impl fmt::Display for TokenStream {
-+// Work around https://github.com/rust-lang/rust/issues/58736.
-+fn proc_macro_parse(src: &str) -> Result<proc_macro::TokenStream, LexError> {
-+ panic::catch_unwind(|| src.parse().map_err(LexError::Compiler))
-+ .unwrap_or(Err(LexError::Fallback(fallback::LexError)))
-+}
-+
-+impl Display for TokenStream {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match self {
-- TokenStream::Compiler(tts) => tts.clone().into_token_stream().fmt(f),
-- TokenStream::Fallback(tts) => tts.fmt(f),
-+ TokenStream::Compiler(tts) => Display::fmt(&tts.clone().into_token_stream(), f),
-+ TokenStream::Fallback(tts) => Display::fmt(tts, f),
- }
- }
- }
-
- impl From<proc_macro::TokenStream> for TokenStream {
- fn from(inner: proc_macro::TokenStream) -> TokenStream {
- TokenStream::Compiler(DeferredTokenStream::new(inner))
- }
-@@ -182,17 +136,17 @@ impl From<TokenStream> for proc_macro::T
- }
-
- impl From<fallback::TokenStream> for TokenStream {
- fn from(inner: fallback::TokenStream) -> TokenStream {
- TokenStream::Fallback(inner)
- }
- }
-
--// Assumes nightly_works().
-+// Assumes inside_proc_macro().
- fn into_compiler_token(token: TokenTree) -> proc_macro::TokenTree {
- match token {
- TokenTree::Group(tt) => tt.inner.unwrap_nightly().into(),
- TokenTree::Punct(tt) => {
- let spacing = match tt.spacing() {
- Spacing::Joint => proc_macro::Spacing::Joint,
- Spacing::Alone => proc_macro::Spacing::Alone,
- };
-@@ -202,37 +156,37 @@ fn into_compiler_token(token: TokenTree)
- }
- TokenTree::Ident(tt) => tt.inner.unwrap_nightly().into(),
- TokenTree::Literal(tt) => tt.inner.unwrap_nightly().into(),
- }
- }
-
- impl From<TokenTree> for TokenStream {
- fn from(token: TokenTree) -> TokenStream {
-- if nightly_works() {
-+ if inside_proc_macro() {
- TokenStream::Compiler(DeferredTokenStream::new(into_compiler_token(token).into()))
- } else {
- TokenStream::Fallback(token.into())
- }
- }
- }
-
--impl iter::FromIterator<TokenTree> for TokenStream {
-+impl FromIterator<TokenTree> for TokenStream {
- fn from_iter<I: IntoIterator<Item = TokenTree>>(trees: I) -> Self {
-- if nightly_works() {
-+ if inside_proc_macro() {
- TokenStream::Compiler(DeferredTokenStream::new(
- trees.into_iter().map(into_compiler_token).collect(),
- ))
- } else {
- TokenStream::Fallback(trees.into_iter().collect())
- }
- }
- }
-
--impl iter::FromIterator<TokenStream> for TokenStream {
-+impl FromIterator<TokenStream> for TokenStream {
- fn from_iter<I: IntoIterator<Item = TokenStream>>(streams: I) -> Self {
- let mut streams = streams.into_iter();
- match streams.next() {
- Some(TokenStream::Compiler(mut first)) => {
- first.evaluate_now();
- first.stream.extend(streams.map(|s| match s {
- TokenStream::Compiler(s) => s.into_token_stream(),
- TokenStream::Fallback(_) => mismatch(),
-@@ -247,75 +201,76 @@ impl iter::FromIterator<TokenStream> for
- TokenStream::Fallback(first)
- }
- None => TokenStream::new(),
- }
- }
- }
-
- impl Extend<TokenTree> for TokenStream {
-- fn extend<I: IntoIterator<Item = TokenTree>>(&mut self, streams: I) {
-+ fn extend<I: IntoIterator<Item = TokenTree>>(&mut self, stream: I) {
- match self {
- TokenStream::Compiler(tts) => {
- // Here is the reason for DeferredTokenStream.
-- tts.extra
-- .extend(streams.into_iter().map(into_compiler_token));
-+ for token in stream {
-+ tts.extra.push(into_compiler_token(token));
-+ }
- }
-- TokenStream::Fallback(tts) => tts.extend(streams),
-+ TokenStream::Fallback(tts) => tts.extend(stream),
- }
- }
- }
-
- impl Extend<TokenStream> for TokenStream {
- fn extend<I: IntoIterator<Item = TokenStream>>(&mut self, streams: I) {
- match self {
- TokenStream::Compiler(tts) => {
- tts.evaluate_now();
- tts.stream
-- .extend(streams.into_iter().map(|stream| stream.unwrap_nightly()));
-+ .extend(streams.into_iter().map(TokenStream::unwrap_nightly));
- }
- TokenStream::Fallback(tts) => {
-- tts.extend(streams.into_iter().map(|stream| stream.unwrap_stable()));
-+ tts.extend(streams.into_iter().map(TokenStream::unwrap_stable));
- }
- }
- }
- }
-
--impl fmt::Debug for TokenStream {
-+impl Debug for TokenStream {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match self {
-- TokenStream::Compiler(tts) => tts.clone().into_token_stream().fmt(f),
-- TokenStream::Fallback(tts) => tts.fmt(f),
-+ TokenStream::Compiler(tts) => Debug::fmt(&tts.clone().into_token_stream(), f),
-+ TokenStream::Fallback(tts) => Debug::fmt(tts, f),
- }
- }
- }
-
- impl From<proc_macro::LexError> for LexError {
- fn from(e: proc_macro::LexError) -> LexError {
- LexError::Compiler(e)
- }
- }
-
- impl From<fallback::LexError> for LexError {
- fn from(e: fallback::LexError) -> LexError {
- LexError::Fallback(e)
- }
- }
-
--impl fmt::Debug for LexError {
-+impl Debug for LexError {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match self {
-- LexError::Compiler(e) => e.fmt(f),
-- LexError::Fallback(e) => e.fmt(f),
-+ LexError::Compiler(e) => Debug::fmt(e, f),
-+ LexError::Fallback(e) => Debug::fmt(e, f),
- }
- }
- }
-
- #[derive(Clone)]
--pub enum TokenTreeIter {
-+pub(crate) enum TokenTreeIter {
- Compiler(proc_macro::token_stream::IntoIter),
- Fallback(fallback::TokenTreeIter),
- }
-
- impl IntoIterator for TokenStream {
- type Item = TokenTree;
- type IntoIter = TokenTreeIter;
-
-@@ -356,25 +311,25 @@ impl Iterator for TokenTreeIter {
- fn size_hint(&self) -> (usize, Option<usize>) {
- match self {
- TokenTreeIter::Compiler(tts) => tts.size_hint(),
- TokenTreeIter::Fallback(tts) => tts.size_hint(),
- }
- }
- }
-
--impl fmt::Debug for TokenTreeIter {
-+impl Debug for TokenTreeIter {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- f.debug_struct("TokenTreeIter").finish()
- }
- }
-
- #[derive(Clone, PartialEq, Eq)]
- #[cfg(super_unstable)]
--pub enum SourceFile {
-+pub(crate) enum SourceFile {
- Compiler(proc_macro::SourceFile),
- Fallback(fallback::SourceFile),
- }
-
- #[cfg(super_unstable)]
- impl SourceFile {
- fn nightly(sf: proc_macro::SourceFile) -> Self {
- SourceFile::Compiler(sf)
-@@ -392,68 +347,87 @@ impl SourceFile {
- match self {
- SourceFile::Compiler(a) => a.is_real(),
- SourceFile::Fallback(a) => a.is_real(),
- }
- }
- }
-
- #[cfg(super_unstable)]
--impl fmt::Debug for SourceFile {
-+impl Debug for SourceFile {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match self {
-- SourceFile::Compiler(a) => a.fmt(f),
-- SourceFile::Fallback(a) => a.fmt(f),
-+ SourceFile::Compiler(a) => Debug::fmt(a, f),
-+ SourceFile::Fallback(a) => Debug::fmt(a, f),
- }
- }
- }
-
- #[cfg(any(super_unstable, feature = "span-locations"))]
--pub struct LineColumn {
-+pub(crate) struct LineColumn {
- pub line: usize,
- pub column: usize,
- }
-
- #[derive(Copy, Clone)]
--pub enum Span {
-+pub(crate) enum Span {
- Compiler(proc_macro::Span),
- Fallback(fallback::Span),
- }
-
- impl Span {
- pub fn call_site() -> Span {
-- if nightly_works() {
-+ if inside_proc_macro() {
- Span::Compiler(proc_macro::Span::call_site())
- } else {
- Span::Fallback(fallback::Span::call_site())
- }
- }
-
-+ #[cfg(hygiene)]
-+ pub fn mixed_site() -> Span {
-+ if inside_proc_macro() {
-+ Span::Compiler(proc_macro::Span::mixed_site())
-+ } else {
-+ Span::Fallback(fallback::Span::mixed_site())
-+ }
-+ }
-+
- #[cfg(super_unstable)]
- pub fn def_site() -> Span {
-- if nightly_works() {
-+ if inside_proc_macro() {
- Span::Compiler(proc_macro::Span::def_site())
- } else {
- Span::Fallback(fallback::Span::def_site())
- }
- }
-
-- #[cfg(super_unstable)]
- pub fn resolved_at(&self, other: Span) -> Span {
- match (self, other) {
-+ #[cfg(hygiene)]
- (Span::Compiler(a), Span::Compiler(b)) => Span::Compiler(a.resolved_at(b)),
-+
-+ // Name resolution affects semantics, but location is only cosmetic
-+ #[cfg(not(hygiene))]
-+ (Span::Compiler(_), Span::Compiler(_)) => other,
-+
- (Span::Fallback(a), Span::Fallback(b)) => Span::Fallback(a.resolved_at(b)),
- _ => mismatch(),
- }
- }
-
-- #[cfg(super_unstable)]
- pub fn located_at(&self, other: Span) -> Span {
- match (self, other) {
-+ #[cfg(hygiene)]
- (Span::Compiler(a), Span::Compiler(b)) => Span::Compiler(a.located_at(b)),
-+
-+ // Name resolution affects semantics, but location is only cosmetic
-+ #[cfg(not(hygiene))]
-+ (Span::Compiler(_), Span::Compiler(_)) => *self,
-+
- (Span::Fallback(a), Span::Fallback(b)) => Span::Fallback(a.located_at(b)),
- _ => mismatch(),
- }
- }
-
- pub fn unwrap(self) -> proc_macro::Span {
- match self {
- Span::Compiler(s) => s,
-@@ -537,36 +511,36 @@ impl From<proc_macro::Span> for crate::S
- }
-
- impl From<fallback::Span> for Span {
- fn from(inner: fallback::Span) -> Span {
- Span::Fallback(inner)
- }
- }
-
--impl fmt::Debug for Span {
-+impl Debug for Span {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match self {
-- Span::Compiler(s) => s.fmt(f),
-- Span::Fallback(s) => s.fmt(f),
-+ Span::Compiler(s) => Debug::fmt(s, f),
-+ Span::Fallback(s) => Debug::fmt(s, f),
- }
- }
- }
-
--pub fn debug_span_field_if_nontrivial(debug: &mut fmt::DebugStruct, span: Span) {
-+pub(crate) fn debug_span_field_if_nontrivial(debug: &mut fmt::DebugStruct, span: Span) {
- match span {
- Span::Compiler(s) => {
- debug.field("span", &s);
- }
- Span::Fallback(s) => fallback::debug_span_field_if_nontrivial(debug, s),
- }
- }
-
- #[derive(Clone)]
--pub enum Group {
-+pub(crate) enum Group {
- Compiler(proc_macro::Group),
- Fallback(fallback::Group),
- }
-
- impl Group {
- pub fn new(delimiter: Delimiter, stream: TokenStream) -> Group {
- match stream {
- TokenStream::Compiler(tts) => {
-@@ -647,36 +621,36 @@ impl Group {
- }
-
- impl From<fallback::Group> for Group {
- fn from(g: fallback::Group) -> Self {
- Group::Fallback(g)
- }
- }
-
--impl fmt::Display for Group {
-+impl Display for Group {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- match self {
-- Group::Compiler(group) => group.fmt(formatter),
-- Group::Fallback(group) => group.fmt(formatter),
-+ Group::Compiler(group) => Display::fmt(group, formatter),
-+ Group::Fallback(group) => Display::fmt(group, formatter),
- }
- }
- }
-
--impl fmt::Debug for Group {
-+impl Debug for Group {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- match self {
-- Group::Compiler(group) => group.fmt(formatter),
-- Group::Fallback(group) => group.fmt(formatter),
-+ Group::Compiler(group) => Debug::fmt(group, formatter),
-+ Group::Fallback(group) => Debug::fmt(group, formatter),
- }
- }
- }
-
- #[derive(Clone)]
--pub enum Ident {
-+pub(crate) enum Ident {
- Compiler(proc_macro::Ident),
- Fallback(fallback::Ident),
- }
-
- impl Ident {
- pub fn new(string: &str, span: Span) -> Ident {
- match span {
- Span::Compiler(s) => Ident::Compiler(proc_macro::Ident::new(string, s)),
-@@ -742,56 +716,56 @@ where
- let other = other.as_ref();
- match self {
- Ident::Compiler(t) => t.to_string() == other,
- Ident::Fallback(t) => t == other,
- }
- }
- }
-
--impl fmt::Display for Ident {
-+impl Display for Ident {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match self {
-- Ident::Compiler(t) => t.fmt(f),
-- Ident::Fallback(t) => t.fmt(f),
-+ Ident::Compiler(t) => Display::fmt(t, f),
-+ Ident::Fallback(t) => Display::fmt(t, f),
- }
- }
- }
-
--impl fmt::Debug for Ident {
-+impl Debug for Ident {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match self {
-- Ident::Compiler(t) => t.fmt(f),
-- Ident::Fallback(t) => t.fmt(f),
-+ Ident::Compiler(t) => Debug::fmt(t, f),
-+ Ident::Fallback(t) => Debug::fmt(t, f),
- }
- }
- }
-
- #[derive(Clone)]
--pub enum Literal {
-+pub(crate) enum Literal {
- Compiler(proc_macro::Literal),
- Fallback(fallback::Literal),
- }
-
- macro_rules! suffixed_numbers {
- ($($name:ident => $kind:ident,)*) => ($(
- pub fn $name(n: $kind) -> Literal {
-- if nightly_works() {
-+ if inside_proc_macro() {
- Literal::Compiler(proc_macro::Literal::$name(n))
- } else {
- Literal::Fallback(fallback::Literal::$name(n))
- }
- }
- )*)
- }
-
- macro_rules! unsuffixed_integers {
- ($($name:ident => $kind:ident,)*) => ($(
- pub fn $name(n: $kind) -> Literal {
-- if nightly_works() {
-+ if inside_proc_macro() {
- Literal::Compiler(proc_macro::Literal::$name(n))
- } else {
- Literal::Fallback(fallback::Literal::$name(n))
- }
- }
- )*)
- }
-
-@@ -825,49 +799,49 @@ impl Literal {
- i16_unsuffixed => i16,
- i32_unsuffixed => i32,
- i64_unsuffixed => i64,
- i128_unsuffixed => i128,
- isize_unsuffixed => isize,
- }
-
- pub fn f32_unsuffixed(f: f32) -> Literal {
-- if nightly_works() {
-+ if inside_proc_macro() {
- Literal::Compiler(proc_macro::Literal::f32_unsuffixed(f))
- } else {
- Literal::Fallback(fallback::Literal::f32_unsuffixed(f))
- }
- }
-
- pub fn f64_unsuffixed(f: f64) -> Literal {
-- if nightly_works() {
-+ if inside_proc_macro() {
- Literal::Compiler(proc_macro::Literal::f64_unsuffixed(f))
- } else {
- Literal::Fallback(fallback::Literal::f64_unsuffixed(f))
- }
- }
-
- pub fn string(t: &str) -> Literal {
-- if nightly_works() {
-+ if inside_proc_macro() {
- Literal::Compiler(proc_macro::Literal::string(t))
- } else {
- Literal::Fallback(fallback::Literal::string(t))
- }
- }
-
- pub fn character(t: char) -> Literal {
-- if nightly_works() {
-+ if inside_proc_macro() {
- Literal::Compiler(proc_macro::Literal::character(t))
- } else {
- Literal::Fallback(fallback::Literal::character(t))
- }
- }
-
- pub fn byte_string(bytes: &[u8]) -> Literal {
-- if nightly_works() {
-+ if inside_proc_macro() {
- Literal::Compiler(proc_macro::Literal::byte_string(bytes))
- } else {
- Literal::Fallback(fallback::Literal::byte_string(bytes))
- }
- }
-
- pub fn span(&self) -> Span {
- match self {
-@@ -903,25 +877,25 @@ impl Literal {
- }
-
- impl From<fallback::Literal> for Literal {
- fn from(s: fallback::Literal) -> Literal {
- Literal::Fallback(s)
- }
- }
-
--impl fmt::Display for Literal {
-+impl Display for Literal {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match self {
-- Literal::Compiler(t) => t.fmt(f),
-- Literal::Fallback(t) => t.fmt(f),
-+ Literal::Compiler(t) => Display::fmt(t, f),
-+ Literal::Fallback(t) => Display::fmt(t, f),
- }
- }
- }
-
--impl fmt::Debug for Literal {
-+impl Debug for Literal {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match self {
-- Literal::Compiler(t) => t.fmt(f),
-- Literal::Fallback(t) => t.fmt(f),
-+ Literal::Compiler(t) => Debug::fmt(t, f),
-+ Literal::Fallback(t) => Debug::fmt(t, f),
- }
- }
- }
-diff --git a/third_party/rust/proc-macro2/tests/comments.rs b/third_party/rust/proc-macro2/tests/comments.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/proc-macro2/tests/comments.rs
-@@ -0,0 +1,103 @@
-+use proc_macro2::{Delimiter, Literal, Spacing, TokenStream, TokenTree};
-+
-+// #[doc = "..."] -> "..."
-+fn lit_of_outer_doc_comment(tokens: TokenStream) -> Literal {
-+ lit_of_doc_comment(tokens, false)
-+}
-+
-+// #![doc = "..."] -> "..."
-+fn lit_of_inner_doc_comment(tokens: TokenStream) -> Literal {
-+ lit_of_doc_comment(tokens, true)
-+}
-+
-+fn lit_of_doc_comment(tokens: TokenStream, inner: bool) -> Literal {
-+ let mut iter = tokens.clone().into_iter();
-+ match iter.next().unwrap() {
-+ TokenTree::Punct(punct) => {
-+ assert_eq!(punct.as_char(), '#');
-+ assert_eq!(punct.spacing(), Spacing::Alone);
-+ }
-+ _ => panic!("wrong token {:?}", tokens),
-+ }
-+ if inner {
-+ match iter.next().unwrap() {
-+ TokenTree::Punct(punct) => {
-+ assert_eq!(punct.as_char(), '!');
-+ assert_eq!(punct.spacing(), Spacing::Alone);
-+ }
-+ _ => panic!("wrong token {:?}", tokens),
-+ }
-+ }
-+ iter = match iter.next().unwrap() {
-+ TokenTree::Group(group) => {
-+ assert_eq!(group.delimiter(), Delimiter::Bracket);
-+ assert!(iter.next().is_none(), "unexpected token {:?}", tokens);
-+ group.stream().into_iter()
-+ }
-+ _ => panic!("wrong token {:?}", tokens),
-+ };
-+ match iter.next().unwrap() {
-+ TokenTree::Ident(ident) => assert_eq!(ident.to_string(), "doc"),
-+ _ => panic!("wrong token {:?}", tokens),
-+ }
-+ match iter.next().unwrap() {
-+ TokenTree::Punct(punct) => {
-+ assert_eq!(punct.as_char(), '=');
-+ assert_eq!(punct.spacing(), Spacing::Alone);
-+ }
-+ _ => panic!("wrong token {:?}", tokens),
-+ }
-+ match iter.next().unwrap() {
-+ TokenTree::Literal(literal) => {
-+ assert!(iter.next().is_none(), "unexpected token {:?}", tokens);
-+ literal
-+ }
-+ _ => panic!("wrong token {:?}", tokens),
-+ }
-+}
-+
-+#[test]
-+fn closed_immediately() {
-+ let stream = "/**/".parse::<TokenStream>().unwrap();
-+ let tokens = stream.into_iter().collect::<Vec<_>>();
-+ assert!(tokens.is_empty(), "not empty -- {:?}", tokens);
-+}
-+
-+#[test]
-+fn incomplete() {
-+ assert!("/*/".parse::<TokenStream>().is_err());
-+}
-+
-+#[test]
-+fn lit() {
-+ let stream = "/// doc".parse::<TokenStream>().unwrap();
-+ let lit = lit_of_outer_doc_comment(stream);
-+ assert_eq!(lit.to_string(), "\" doc\"");
-+
-+ let stream = "//! doc".parse::<TokenStream>().unwrap();
-+ let lit = lit_of_inner_doc_comment(stream);
-+ assert_eq!(lit.to_string(), "\" doc\"");
-+
-+ let stream = "/** doc */".parse::<TokenStream>().unwrap();
-+ let lit = lit_of_outer_doc_comment(stream);
-+ assert_eq!(lit.to_string(), "\" doc \"");
-+
-+ let stream = "/*! doc */".parse::<TokenStream>().unwrap();
-+ let lit = lit_of_inner_doc_comment(stream);
-+ assert_eq!(lit.to_string(), "\" doc \"");
-+}
-+
-+#[test]
-+fn carriage_return() {
-+ let stream = "///\r\n".parse::<TokenStream>().unwrap();
-+ let lit = lit_of_outer_doc_comment(stream);
-+ assert_eq!(lit.to_string(), "\"\"");
-+
-+ let stream = "/**\r\n*/".parse::<TokenStream>().unwrap();
-+ let lit = lit_of_outer_doc_comment(stream);
-+ assert_eq!(lit.to_string(), "\"\\r\\n\"");
-+
-+ "///\r".parse::<TokenStream>().unwrap_err();
-+ "///\r \n".parse::<TokenStream>().unwrap_err();
-+ "/**\r \n*/".parse::<TokenStream>().unwrap_err();
-+}
-diff --git a/third_party/rust/proc-macro2/tests/test.rs b/third_party/rust/proc-macro2/tests/test.rs
---- a/third_party/rust/proc-macro2/tests/test.rs
-+++ b/third_party/rust/proc-macro2/tests/test.rs
-@@ -1,12 +1,11 @@
-+use proc_macro2::{Ident, Literal, Spacing, Span, TokenStream, TokenTree};
- use std::str::{self, FromStr};
-
--use proc_macro2::{Ident, Literal, Spacing, Span, TokenStream, TokenTree};
--
- #[test]
- fn idents() {
- assert_eq!(
- Ident::new("String", Span::call_site()).to_string(),
- "String"
- );
- assert_eq!(Ident::new("fn", Span::call_site()).to_string(), "fn");
- assert_eq!(Ident::new("_", Span::call_site()).to_string(), "_");
-@@ -105,16 +104,43 @@ fn literal_suffix() {
- assert_eq!(token_count("999u256"), 1);
- assert_eq!(token_count("999r#u256"), 3);
- assert_eq!(token_count("1."), 1);
- assert_eq!(token_count("1.f32"), 3);
- assert_eq!(token_count("1.0_0"), 1);
- assert_eq!(token_count("1._0"), 3);
- assert_eq!(token_count("1._m"), 3);
- assert_eq!(token_count("\"\"s"), 1);
-+ assert_eq!(token_count("r\"\"r"), 1);
-+ assert_eq!(token_count("b\"\"b"), 1);
-+ assert_eq!(token_count("br\"\"br"), 1);
-+ assert_eq!(token_count("r#\"\"#r"), 1);
-+ assert_eq!(token_count("'c'c"), 1);
-+ assert_eq!(token_count("b'b'b"), 1);
-+}
-+
-+#[test]
-+fn literal_iter_negative() {
-+ let negative_literal = Literal::i32_suffixed(-3);
-+ let tokens = TokenStream::from(TokenTree::Literal(negative_literal));
-+ let mut iter = tokens.into_iter();
-+ match iter.next().unwrap() {
-+ TokenTree::Punct(punct) => {
-+ assert_eq!(punct.as_char(), '-');
-+ assert_eq!(punct.spacing(), Spacing::Alone);
-+ }
-+ unexpected => panic!("unexpected token {:?}", unexpected),
-+ }
-+ match iter.next().unwrap() {
-+ TokenTree::Literal(literal) => {
-+ assert_eq!(literal.to_string(), "3i32");
-+ }
-+ unexpected => panic!("unexpected token {:?}", unexpected),
-+ }
-+ assert!(iter.next().is_none());
- }
-
- #[test]
- fn roundtrip() {
- fn roundtrip(p: &str) {
- println!("parse: {}", p);
- let s = p.parse::<TokenStream>().unwrap().to_string();
- println!("first: {}", s);
-@@ -161,46 +187,16 @@ fn fail() {
- fail("' static");
- fail("r#1");
- fail("r#_");
- }
-
- #[cfg(span_locations)]
- #[test]
- fn span_test() {
-- use proc_macro2::TokenTree;
--
-- fn check_spans(p: &str, mut lines: &[(usize, usize, usize, usize)]) {
-- let ts = p.parse::<TokenStream>().unwrap();
-- check_spans_internal(ts, &mut lines);
-- }
--
-- fn check_spans_internal(ts: TokenStream, lines: &mut &[(usize, usize, usize, usize)]) {
-- for i in ts {
-- if let Some((&(sline, scol, eline, ecol), rest)) = lines.split_first() {
-- *lines = rest;
--
-- let start = i.span().start();
-- assert_eq!(start.line, sline, "sline did not match for {}", i);
-- assert_eq!(start.column, scol, "scol did not match for {}", i);
--
-- let end = i.span().end();
-- assert_eq!(end.line, eline, "eline did not match for {}", i);
-- assert_eq!(end.column, ecol, "ecol did not match for {}", i);
--
-- match i {
-- TokenTree::Group(ref g) => {
-- check_spans_internal(g.stream().clone(), lines);
-- }
-- _ => {}
-- }
-- }
-- }
-- }
--
- check_spans(
- "\
- /// This is a document comment
- testing 123
- {
- testing 234
- }",
- &[
-@@ -269,59 +265,17 @@ fn span_join() {
- joined1.unwrap().source_file(),
- source1[0].span().source_file()
- );
- }
-
- #[test]
- fn no_panic() {
- let s = str::from_utf8(b"b\'\xc2\x86 \x00\x00\x00^\"").unwrap();
-- assert!(s.parse::<proc_macro2::TokenStream>().is_err());
--}
--
--#[test]
--fn tricky_doc_comment() {
-- let stream = "/**/".parse::<proc_macro2::TokenStream>().unwrap();
-- let tokens = stream.into_iter().collect::<Vec<_>>();
-- assert!(tokens.is_empty(), "not empty -- {:?}", tokens);
--
-- let stream = "/// doc".parse::<proc_macro2::TokenStream>().unwrap();
-- let tokens = stream.into_iter().collect::<Vec<_>>();
-- assert!(tokens.len() == 2, "not length 2 -- {:?}", tokens);
-- match tokens[0] {
-- proc_macro2::TokenTree::Punct(ref tt) => assert_eq!(tt.as_char(), '#'),
-- _ => panic!("wrong token {:?}", tokens[0]),
-- }
-- let mut tokens = match tokens[1] {
-- proc_macro2::TokenTree::Group(ref tt) => {
-- assert_eq!(tt.delimiter(), proc_macro2::Delimiter::Bracket);
-- tt.stream().into_iter()
-- }
-- _ => panic!("wrong token {:?}", tokens[0]),
-- };
--
-- match tokens.next().unwrap() {
-- proc_macro2::TokenTree::Ident(ref tt) => assert_eq!(tt.to_string(), "doc"),
-- t => panic!("wrong token {:?}", t),
-- }
-- match tokens.next().unwrap() {
-- proc_macro2::TokenTree::Punct(ref tt) => assert_eq!(tt.as_char(), '='),
-- t => panic!("wrong token {:?}", t),
-- }
-- match tokens.next().unwrap() {
-- proc_macro2::TokenTree::Literal(ref tt) => {
-- assert_eq!(tt.to_string(), "\" doc\"");
-- }
-- t => panic!("wrong token {:?}", t),
-- }
-- assert!(tokens.next().is_none());
--
-- let stream = "//! doc".parse::<proc_macro2::TokenStream>().unwrap();
-- let tokens = stream.into_iter().collect::<Vec<_>>();
-- assert!(tokens.len() == 3, "not length 3 -- {:?}", tokens);
-+ assert!(s.parse::<TokenStream>().is_err());
- }
-
- #[test]
- fn op_before_comment() {
- let mut tts = TokenStream::from_str("~// comment").unwrap().into_iter();
- match tts.next().unwrap() {
- TokenTree::Punct(tt) => {
- assert_eq!(tt.as_char(), '~');
-@@ -340,30 +294,30 @@ fn raw_identifier() {
- }
- assert!(tts.next().is_none());
- }
-
- #[test]
- fn test_debug_ident() {
- let ident = Ident::new("proc_macro", Span::call_site());
-
-- #[cfg(not(procmacro2_semver_exempt))]
-+ #[cfg(not(span_locations))]
- let expected = "Ident(proc_macro)";
-
-- #[cfg(procmacro2_semver_exempt)]
-- let expected = "Ident { sym: proc_macro, span: bytes(0..0) }";
-+ #[cfg(span_locations)]
-+ let expected = "Ident { sym: proc_macro }";
-
- assert_eq!(expected, format!("{:?}", ident));
- }
-
- #[test]
- fn test_debug_tokenstream() {
- let tts = TokenStream::from_str("[a + 1]").unwrap();
-
-- #[cfg(not(procmacro2_semver_exempt))]
-+ #[cfg(not(span_locations))]
- let expected = "\
- TokenStream [
- Group {
- delimiter: Bracket,
- stream: TokenStream [
- Ident {
- sym: a,
- },
-@@ -374,17 +328,17 @@ TokenStream [
- Literal {
- lit: 1,
- },
- ],
- },
- ]\
- ";
-
-- #[cfg(not(procmacro2_semver_exempt))]
-+ #[cfg(not(span_locations))]
- let expected_before_trailing_commas = "\
- TokenStream [
- Group {
- delimiter: Bracket,
- stream: TokenStream [
- Ident {
- sym: a
- },
-@@ -395,17 +349,17 @@ TokenStream [
- Literal {
- lit: 1
- }
- ]
- }
- ]\
- ";
-
-- #[cfg(procmacro2_semver_exempt)]
-+ #[cfg(span_locations)]
- let expected = "\
- TokenStream [
- Group {
- delimiter: Bracket,
- stream: TokenStream [
- Ident {
- sym: a,
- span: bytes(2..3),
-@@ -420,17 +374,17 @@ TokenStream [
- span: bytes(6..7),
- },
- ],
- span: bytes(1..8),
- },
- ]\
- ";
-
-- #[cfg(procmacro2_semver_exempt)]
-+ #[cfg(span_locations)]
- let expected_before_trailing_commas = "\
- TokenStream [
- Group {
- delimiter: Bracket,
- stream: TokenStream [
- Ident {
- sym: a,
- span: bytes(2..3)
-@@ -459,8 +413,85 @@ TokenStream [
- }
-
- #[test]
- fn default_tokenstream_is_empty() {
- let default_token_stream: TokenStream = Default::default();
-
- assert!(default_token_stream.is_empty());
- }
-+
-+#[test]
-+fn tuple_indexing() {
-+ // This behavior may change depending on https://github.com/rust-lang/rust/pull/71322
-+ let mut tokens = "tuple.0.0".parse::<TokenStream>().unwrap().into_iter();
-+ assert_eq!("tuple", tokens.next().unwrap().to_string());
-+ assert_eq!(".", tokens.next().unwrap().to_string());
-+ assert_eq!("0.0", tokens.next().unwrap().to_string());
-+ assert!(tokens.next().is_none());
-+}
-+
-+#[cfg(span_locations)]
-+#[test]
-+fn non_ascii_tokens() {
-+ check_spans("// abc", &[]);
-+ check_spans("// ábc", &[]);
-+ check_spans("// abc x", &[]);
-+ check_spans("// ábc x", &[]);
-+ check_spans("/* abc */ x", &[(1, 10, 1, 11)]);
-+ check_spans("/* ábc */ x", &[(1, 10, 1, 11)]);
-+ check_spans("/* ab\nc */ x", &[(2, 5, 2, 6)]);
-+ check_spans("/* áb\nc */ x", &[(2, 5, 2, 6)]);
-+ check_spans("/*** abc */ x", &[(1, 12, 1, 13)]);
-+ check_spans("/*** ábc */ x", &[(1, 12, 1, 13)]);
-+ check_spans(r#""abc""#, &[(1, 0, 1, 5)]);
-+ check_spans(r#""ábc""#, &[(1, 0, 1, 5)]);
-+ check_spans(r###"r#"abc"#"###, &[(1, 0, 1, 8)]);
-+ check_spans(r###"r#"ábc"#"###, &[(1, 0, 1, 8)]);
-+ check_spans("r#\"a\nc\"#", &[(1, 0, 2, 3)]);
-+ check_spans("r#\"á\nc\"#", &[(1, 0, 2, 3)]);
-+ check_spans("'a'", &[(1, 0, 1, 3)]);
-+ check_spans("'á'", &[(1, 0, 1, 3)]);
-+ check_spans("//! abc", &[(1, 0, 1, 7), (1, 0, 1, 7), (1, 0, 1, 7)]);
-+ check_spans("//! ábc", &[(1, 0, 1, 7), (1, 0, 1, 7), (1, 0, 1, 7)]);
-+ check_spans("//! abc\n", &[(1, 0, 1, 7), (1, 0, 1, 7), (1, 0, 1, 7)]);
-+ check_spans("//! ábc\n", &[(1, 0, 1, 7), (1, 0, 1, 7), (1, 0, 1, 7)]);
-+ check_spans("/*! abc */", &[(1, 0, 1, 10), (1, 0, 1, 10), (1, 0, 1, 10)]);
-+ check_spans("/*! ábc */", &[(1, 0, 1, 10), (1, 0, 1, 10), (1, 0, 1, 10)]);
-+ check_spans("/*! a\nc */", &[(1, 0, 2, 4), (1, 0, 2, 4), (1, 0, 2, 4)]);
-+ check_spans("/*! á\nc */", &[(1, 0, 2, 4), (1, 0, 2, 4), (1, 0, 2, 4)]);
-+ check_spans("abc", &[(1, 0, 1, 3)]);
-+ check_spans("ábc", &[(1, 0, 1, 3)]);
-+ check_spans("ábć", &[(1, 0, 1, 3)]);
-+ check_spans("abc// foo", &[(1, 0, 1, 3)]);
-+ check_spans("ábc// foo", &[(1, 0, 1, 3)]);
-+ check_spans("ábć// foo", &[(1, 0, 1, 3)]);
-+ check_spans("b\"a\\\n c\"", &[(1, 0, 2, 3)]);
-+ check_spans("b\"a\\\n\u{00a0}c\"", &[(1, 0, 2, 3)]);
-+}
-+
-+#[cfg(span_locations)]
-+fn check_spans(p: &str, mut lines: &[(usize, usize, usize, usize)]) {
-+ let ts = p.parse::<TokenStream>().unwrap();
-+ check_spans_internal(ts, &mut lines);
-+ assert!(lines.is_empty(), "leftover ranges: {:?}", lines);
-+}
-+
-+#[cfg(span_locations)]
-+fn check_spans_internal(ts: TokenStream, lines: &mut &[(usize, usize, usize, usize)]) {
-+ for i in ts {
-+ if let Some((&(sline, scol, eline, ecol), rest)) = lines.split_first() {
-+ *lines = rest;
-+
-+ let start = i.span().start();
-+ assert_eq!(start.line, sline, "sline did not match for {}", i);
-+ assert_eq!(start.column, scol, "scol did not match for {}", i);
-+
-+ let end = i.span().end();
-+ assert_eq!(end.line, eline, "eline did not match for {}", i);
-+ assert_eq!(end.column, ecol, "ecol did not match for {}", i);
-+
-+ if let TokenTree::Group(g) = i {
-+ check_spans_internal(g.stream().clone(), lines);
-+ }
-+ }
-+ }
-+}
-diff --git a/third_party/rust/proc-macro2/tests/test_fmt.rs b/third_party/rust/proc-macro2/tests/test_fmt.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/proc-macro2/tests/test_fmt.rs
-@@ -0,0 +1,26 @@
-+use proc_macro2::{Delimiter, Group, Ident, Span, TokenStream, TokenTree};
-+use std::iter::{self, FromIterator};
-+
-+#[test]
-+fn test_fmt_group() {
-+ let ident = Ident::new("x", Span::call_site());
-+ let inner = TokenStream::from_iter(iter::once(TokenTree::Ident(ident)));
-+ let parens_empty = Group::new(Delimiter::Parenthesis, TokenStream::new());
-+ let parens_nonempty = Group::new(Delimiter::Parenthesis, inner.clone());
-+ let brackets_empty = Group::new(Delimiter::Bracket, TokenStream::new());
-+ let brackets_nonempty = Group::new(Delimiter::Bracket, inner.clone());
-+ let braces_empty = Group::new(Delimiter::Brace, TokenStream::new());
-+ let braces_nonempty = Group::new(Delimiter::Brace, inner.clone());
-+ let none_empty = Group::new(Delimiter::None, TokenStream::new());
-+ let none_nonempty = Group::new(Delimiter::None, inner.clone());
-+
-+ // Matches libproc_macro.
-+ assert_eq!("()", parens_empty.to_string());
-+ assert_eq!("(x)", parens_nonempty.to_string());
-+ assert_eq!("[]", brackets_empty.to_string());
-+ assert_eq!("[x]", brackets_nonempty.to_string());
-+ assert_eq!("{ }", braces_empty.to_string());
-+ assert_eq!("{ x }", braces_nonempty.to_string());
-+ assert_eq!("", none_empty.to_string());
-+ assert_eq!("x", none_nonempty.to_string());
-+}
-diff --git a/third_party/rust/syn/.cargo-checksum.json b/third_party/rust/syn/.cargo-checksum.json
---- a/third_party/rust/syn/.cargo-checksum.json
-+++ b/third_party/rust/syn/.cargo-checksum.json
-@@ -1,1 +1,1 @@
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-\ No newline at end of file
-diff --git a/third_party/rust/syn/Cargo.toml b/third_party/rust/syn/Cargo.toml
---- a/third_party/rust/syn/Cargo.toml
-+++ b/third_party/rust/syn/Cargo.toml
-@@ -8,79 +8,90 @@
- # If you believe there's an error in this file please file an
- # issue against the rust-lang/cargo repository. If you're
- # editing this file be aware that the upstream Cargo.toml
- # will likely look very different (and much more reasonable)
-
- [package]
- edition = "2018"
- name = "syn"
--version = "1.0.5"
-+version = "1.0.40"
- authors = ["David Tolnay <dtolnay@gmail.com>"]
- include = ["/benches/**", "/build.rs", "/Cargo.toml", "/LICENSE-APACHE", "/LICENSE-MIT", "/README.md", "/src/**", "/tests/**"]
- description = "Parser for Rust source code"
- documentation = "https://docs.rs/syn"
- readme = "README.md"
- categories = ["development-tools::procedural-macro-helpers"]
- license = "MIT OR Apache-2.0"
- repository = "https://github.com/dtolnay/syn"
- [package.metadata.docs.rs]
- all-features = true
-+targets = ["x86_64-unknown-linux-gnu"]
-
- [package.metadata.playground]
--all-features = true
--
--[lib]
--name = "syn"
-+features = ["full", "visit", "visit-mut", "fold", "extra-traits"]
-
- [[bench]]
- name = "rust"
- harness = false
- required-features = ["full", "parsing"]
--edition = "2018"
-
- [[bench]]
- name = "file"
- required-features = ["full", "parsing"]
--edition = "2018"
- [dependencies.proc-macro2]
--version = "1.0"
-+version = "1.0.13"
- default-features = false
-
- [dependencies.quote]
- version = "1.0"
- optional = true
- default-features = false
-
- [dependencies.unicode-xid]
- version = "0.2"
-+[dev-dependencies.anyhow]
-+version = "1.0"
-+
-+[dev-dependencies.flate2]
-+version = "1.0"
-+
- [dev-dependencies.insta]
--version = "0.9"
-+version = "0.16"
-
- [dev-dependencies.rayon]
- version = "1.0"
-
- [dev-dependencies.ref-cast]
--version = "0.2"
-+version = "1.0"
-
- [dev-dependencies.regex]
- version = "1.0"
-
-+[dev-dependencies.reqwest]
-+version = "0.10"
-+features = ["blocking"]
-+
-+[dev-dependencies.syn-test-suite]
-+version = "0"
-+
-+[dev-dependencies.tar]
-+version = "0.4"
-+
- [dev-dependencies.termcolor]
- version = "1.0"
-
- [dev-dependencies.walkdir]
- version = "2.1"
-
- [features]
- clone-impls = []
- default = ["derive", "parsing", "printing", "clone-impls", "proc-macro"]
- derive = []
- extra-traits = []
- fold = []
- full = []
- parsing = []
- printing = ["quote"]
- proc-macro = ["proc-macro2/proc-macro", "quote/proc-macro"]
-+test = ["syn-test-suite/all-features"]
- visit = []
- visit-mut = []
--[badges.travis-ci]
--repository = "dtolnay/syn"
-diff --git a/third_party/rust/syn/README.md b/third_party/rust/syn/README.md
---- a/third_party/rust/syn/README.md
-+++ b/third_party/rust/syn/README.md
-@@ -1,15 +1,15 @@
- Parser for Rust source code
- ===========================
-
--[](https://travis-ci.org/dtolnay/syn)
--[](https://crates.io/crates/syn)
--[](https://docs.rs/syn/1.0/syn/)
--[](https://blog.rust-lang.org/2018/12/06/Rust-1.31-and-rust-2018.html)
-+[<img alt="github" src="https://img.shields.io/badge/github-dtolnay/syn-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/dtolnay/syn)
-+[<img alt="crates.io" src="https://img.shields.io/crates/v/syn.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/syn)
-+[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-syn-66c2a5?style=for-the-badge&labelColor=555555&logoColor=white&logo=data:image/svg+xml;base64,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" height="20">](https://docs.rs/syn)
-+[<img alt="build status" src="https://img.shields.io/github/workflow/status/dtolnay/syn/CI/master?style=for-the-badge" height="20">](https://github.com/dtolnay/syn/actions?query=branch%3Amaster)
-
- Syn is a parsing library for parsing a stream of Rust tokens into a syntax tree
- of Rust source code.
-
- Currently this library is geared toward use in Rust procedural macros, but
- contains some APIs that may be useful more generally.
-
- - **Data structures** — Syn provides a complete syntax tree that can represent
-@@ -41,20 +41,16 @@ contains some APIs that may be useful mo
-
- [`syn::File`]: https://docs.rs/syn/1.0/syn/struct.File.html
- [`syn::Item`]: https://docs.rs/syn/1.0/syn/enum.Item.html
- [`syn::Expr`]: https://docs.rs/syn/1.0/syn/enum.Expr.html
- [`syn::Type`]: https://docs.rs/syn/1.0/syn/enum.Type.html
- [`syn::DeriveInput`]: https://docs.rs/syn/1.0/syn/struct.DeriveInput.html
- [parser functions]: https://docs.rs/syn/1.0/syn/parse/index.html
-
--If you get stuck with anything involving procedural macros in Rust I am happy to
--provide help even if the issue is not related to Syn. Please file a ticket in
--this repo.
--
- *Version requirement: Syn supports rustc 1.31 and up.*
-
- [*Release notes*](https://github.com/dtolnay/syn/releases)
-
- <br>
-
- ## Resources
-
-@@ -83,18 +79,16 @@ tokens back to the compiler to compile i
- syn = "1.0"
- quote = "1.0"
-
- [lib]
- proc-macro = true
- ```
-
- ```rust
--extern crate proc_macro;
--
- use proc_macro::TokenStream;
- use quote::quote;
- use syn::{parse_macro_input, DeriveInput};
-
- #[proc_macro_derive(MyMacro)]
- pub fn my_macro(input: TokenStream) -> TokenStream {
- // Parse the input tokens into a syntax tree
- let input = parse_macro_input!(input as DeriveInput);
-@@ -266,17 +260,17 @@ incompatible ecosystems for proc macros
-
- In general all of your code should be written against proc-macro2 rather than
- proc-macro. The one exception is in the signatures of procedural macro entry
- points, which are required by the language to use `proc_macro::TokenStream`.
-
- The proc-macro2 crate will automatically detect and use the compiler's data
- structures when a procedural macro is active.
-
--[proc-macro2]: https://docs.rs/proc-macro2/1.0.0/proc_macro2/
-+[proc-macro2]: https://docs.rs/proc-macro2/1.0/proc_macro2/
-
- <br>
-
- #### License
-
- <sup>
- Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
- 2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
-diff --git a/third_party/rust/syn/benches/file.rs b/third_party/rust/syn/benches/file.rs
---- a/third_party/rust/syn/benches/file.rs
-+++ b/third_party/rust/syn/benches/file.rs
-@@ -1,14 +1,21 @@
- // $ cargo bench --features full --bench file
-
- #![feature(rustc_private, test)]
-+#![recursion_limit = "1024"]
-
- extern crate test;
-
-+#[macro_use]
-+#[path = "../tests/macros/mod.rs"]
-+mod macros;
-+
-+#[path = "../tests/common/mod.rs"]
-+mod common;
- #[path = "../tests/repo/mod.rs"]
- pub mod repo;
-
- use proc_macro2::TokenStream;
- use std::fs;
- use std::str::FromStr;
- use test::Bencher;
-
-diff --git a/third_party/rust/syn/benches/rust.rs b/third_party/rust/syn/benches/rust.rs
---- a/third_party/rust/syn/benches/rust.rs
-+++ b/third_party/rust/syn/benches/rust.rs
-@@ -1,15 +1,22 @@
- // $ cargo bench --features full --bench rust
- //
- // Syn only, useful for profiling:
- // $ RUSTFLAGS='--cfg syn_only' cargo build --release --features full --bench rust
-
- #![cfg_attr(not(syn_only), feature(rustc_private))]
-+#![recursion_limit = "1024"]
-
-+#[macro_use]
-+#[path = "../tests/macros/mod.rs"]
-+mod macros;
-+
-+#[path = "../tests/common/mod.rs"]
-+mod common;
- #[path = "../tests/repo/mod.rs"]
- mod repo;
-
- use std::fs;
- use std::time::{Duration, Instant};
-
- #[cfg(not(syn_only))]
- mod tokenstream_parse {
-@@ -23,41 +30,45 @@ mod tokenstream_parse {
-
- mod syn_parse {
- pub fn bench(content: &str) -> Result<(), ()> {
- syn::parse_file(content).map(drop).map_err(drop)
- }
- }
-
- #[cfg(not(syn_only))]
--mod libsyntax_parse {
-+mod librustc_parse {
- extern crate rustc_data_structures;
-- extern crate syntax;
-- extern crate syntax_pos;
-+ extern crate rustc_errors;
-+ extern crate rustc_parse;
-+ extern crate rustc_session;
-+ extern crate rustc_span;
-
- use rustc_data_structures::sync::Lrc;
-- use syntax::edition::Edition;
-- use syntax::errors::{emitter::Emitter, DiagnosticBuilder, Handler};
-- use syntax::parse::ParseSess;
-- use syntax::source_map::{FilePathMapping, SourceMap};
-- use syntax_pos::FileName;
-+ use rustc_errors::{emitter::Emitter, Diagnostic, Handler};
-+ use rustc_session::parse::ParseSess;
-+ use rustc_span::source_map::{FilePathMapping, SourceMap};
-+ use rustc_span::{edition::Edition, FileName};
-
- pub fn bench(content: &str) -> Result<(), ()> {
- struct SilentEmitter;
-
- impl Emitter for SilentEmitter {
-- fn emit_diagnostic(&mut self, _db: &DiagnosticBuilder) {}
-+ fn emit_diagnostic(&mut self, _diag: &Diagnostic) {}
-+ fn source_map(&self) -> Option<&Lrc<SourceMap>> {
-+ None
-+ }
- }
-
-- syntax::with_globals(Edition::Edition2018, || {
-+ rustc_span::with_session_globals(Edition::Edition2018, || {
- let cm = Lrc::new(SourceMap::new(FilePathMapping::empty()));
- let emitter = Box::new(SilentEmitter);
- let handler = Handler::with_emitter(false, None, emitter);
- let sess = ParseSess::with_span_handler(handler, cm);
-- if let Err(mut diagnostic) = syntax::parse::parse_crate_from_source_str(
-+ if let Err(mut diagnostic) = rustc_parse::parse_crate_from_source_str(
- FileName::Custom("bench".to_owned()),
- content.to_owned(),
- &sess,
- ) {
- diagnostic.cancel();
- return Err(());
- };
- Ok(())
-@@ -99,21 +110,21 @@ fn exec(mut codepath: impl FnMut(&str) -
- assert_eq!(success, total);
- begin.elapsed()
- }
-
- fn main() {
- repo::clone_rust();
-
- macro_rules! testcases {
-- ($($(#[$cfg:meta])* $name:path,)*) => {
-+ ($($(#[$cfg:meta])* $name:ident,)*) => {
- vec![
- $(
- $(#[$cfg])*
-- (stringify!($name), $name as fn(&str) -> Result<(), ()>),
-+ (stringify!($name), $name::bench as fn(&str) -> Result<(), ()>),
- )*
- ]
- };
- }
-
- #[cfg(not(syn_only))]
- {
- let mut lines = 0;
-@@ -123,22 +134,22 @@ fn main() {
- files += 1;
- Ok(())
- });
- eprintln!("\n{} lines in {} files", lines, files);
- }
-
- for (name, f) in testcases!(
- #[cfg(not(syn_only))]
-- read_from_disk::bench,
-+ read_from_disk,
- #[cfg(not(syn_only))]
-- tokenstream_parse::bench,
-- syn_parse::bench,
-+ tokenstream_parse,
-+ syn_parse,
- #[cfg(not(syn_only))]
-- libsyntax_parse::bench,
-+ librustc_parse,
- ) {
- eprint!("{:20}", format!("{}:", name));
- let elapsed = exec(f);
- eprintln!(
- "elapsed={}.{:03}s",
- elapsed.as_secs(),
- elapsed.subsec_millis(),
- );
-diff --git a/third_party/rust/syn/build.rs b/third_party/rust/syn/build.rs
---- a/third_party/rust/syn/build.rs
-+++ b/third_party/rust/syn/build.rs
-@@ -1,11 +1,11 @@
- use std::env;
- use std::process::Command;
--use std::str::{self, FromStr};
-+use std::str;
-
- // The rustc-cfg strings below are *not* public API. Please let us know by
- // opening a GitHub issue if your build environment requires some way to enable
- // these cfgs other than by executing our build script.
- fn main() {
- let compiler = match rustc_version() {
- Some(compiler) => compiler,
- None => return,
-@@ -21,43 +21,19 @@ fn main() {
- }
-
- struct Compiler {
- minor: u32,
- nightly: bool,
- }
-
- fn rustc_version() -> Option<Compiler> {
-- let rustc = match env::var_os("RUSTC") {
-- Some(rustc) => rustc,
-- None => return None,
-- };
--
-- let output = match Command::new(rustc).arg("--version").output() {
-- Ok(output) => output,
-- Err(_) => return None,
-- };
--
-- let version = match str::from_utf8(&output.stdout) {
-- Ok(version) => version,
-- Err(_) => return None,
-- };
--
-+ let rustc = env::var_os("RUSTC")?;
-+ let output = Command::new(rustc).arg("--version").output().ok()?;
-+ let version = str::from_utf8(&output.stdout).ok()?;
- let mut pieces = version.split('.');
- if pieces.next() != Some("rustc 1") {
- return None;
- }
--
-- let next = match pieces.next() {
-- Some(next) => next,
-- None => return None,
-- };
--
-- let minor = match u32::from_str(next) {
-- Ok(minor) => minor,
-- Err(_) => return None,
-- };
--
-- Some(Compiler {
-- minor: minor,
-- nightly: version.contains("nightly"),
-- })
-+ let minor = pieces.next()?.parse().ok()?;
-+ let nightly = version.contains("nightly");
-+ Some(Compiler { minor, nightly })
- }
-diff --git a/third_party/rust/syn/src/attr.rs b/third_party/rust/syn/src/attr.rs
---- a/third_party/rust/syn/src/attr.rs
-+++ b/third_party/rust/syn/src/attr.rs
-@@ -4,25 +4,21 @@ use crate::punctuated::Punctuated;
- use std::iter;
-
- use proc_macro2::TokenStream;
-
- #[cfg(feature = "parsing")]
- use crate::parse::{Parse, ParseBuffer, ParseStream, Parser, Result};
- #[cfg(feature = "parsing")]
- use crate::punctuated::Pair;
--#[cfg(feature = "extra-traits")]
--use crate::tt::TokenStreamHelper;
--#[cfg(feature = "extra-traits")]
--use std::hash::{Hash, Hasher};
-
- ast_struct! {
- /// An attribute like `#[repr(transparent)]`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- ///
- /// <br>
- ///
- /// # Syntax
- ///
- /// Rust has six types of attributes.
- ///
-@@ -106,58 +102,69 @@ ast_struct! {
- /// If the attribute you are parsing is expected to conform to the
- /// conventional structured form of attribute, use [`parse_meta()`] to
- /// obtain that structured representation. If the attribute follows some
- /// other grammar of its own, use [`parse_args()`] to parse that into the
- /// expected data structure.
- ///
- /// [`parse_meta()`]: Attribute::parse_meta
- /// [`parse_args()`]: Attribute::parse_args
-- pub struct Attribute #manual_extra_traits {
-+ ///
-+ /// <p><br></p>
-+ ///
-+ /// # Doc comments
-+ ///
-+ /// The compiler transforms doc comments, such as `/// comment` and `/*!
-+ /// comment */`, into attributes before macros are expanded. Each comment is
-+ /// expanded into an attribute of the form `#[doc = r"comment"]`.
-+ ///
-+ /// As an example, the following `mod` items are expanded identically:
-+ ///
-+ /// ```
-+ /// # use syn::{ItemMod, parse_quote};
-+ /// let doc: ItemMod = parse_quote! {
-+ /// /// Single line doc comments
-+ /// /// We write so many!
-+ /// /**
-+ /// * Multi-line comments...
-+ /// * May span many lines
-+ /// */
-+ /// mod example {
-+ /// //! Of course, they can be inner too
-+ /// /*! And fit in a single line */
-+ /// }
-+ /// };
-+ /// let attr: ItemMod = parse_quote! {
-+ /// #[doc = r" Single line doc comments"]
-+ /// #[doc = r" We write so many!"]
-+ /// #[doc = r"
-+ /// * Multi-line comments...
-+ /// * May span many lines
-+ /// "]
-+ /// mod example {
-+ /// #![doc = r" Of course, they can be inner too"]
-+ /// #![doc = r" And fit in a single line "]
-+ /// }
-+ /// };
-+ /// assert_eq!(doc, attr);
-+ /// ```
-+ pub struct Attribute {
- pub pound_token: Token![#],
- pub style: AttrStyle,
- pub bracket_token: token::Bracket,
- pub path: Path,
- pub tokens: TokenStream,
- }
- }
-
--#[cfg(feature = "extra-traits")]
--impl Eq for Attribute {}
--
--#[cfg(feature = "extra-traits")]
--impl PartialEq for Attribute {
-- fn eq(&self, other: &Self) -> bool {
-- self.style == other.style
-- && self.pound_token == other.pound_token
-- && self.bracket_token == other.bracket_token
-- && self.path == other.path
-- && TokenStreamHelper(&self.tokens) == TokenStreamHelper(&other.tokens)
-- }
--}
--
--#[cfg(feature = "extra-traits")]
--impl Hash for Attribute {
-- fn hash<H>(&self, state: &mut H)
-- where
-- H: Hasher,
-- {
-- self.style.hash(state);
-- self.pound_token.hash(state);
-- self.bracket_token.hash(state);
-- self.path.hash(state);
-- TokenStreamHelper(&self.tokens).hash(state);
-- }
--}
--
- impl Attribute {
- /// Parses the content of the attribute, consisting of the path and tokens,
- /// as a [`Meta`] if possible.
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- #[cfg(feature = "parsing")]
- pub fn parse_meta(&self) -> Result<Meta> {
- fn clone_ident_segment(segment: &PathSegment) -> PathSegment {
- PathSegment {
- ident: segment.ident.clone(),
- arguments: PathArguments::None,
- }
-@@ -194,91 +201,95 @@ impl Attribute {
- /// parser; and
- /// - the error message has a more useful span when `tokens` is empty.
- ///
- /// ```text
- /// #[my_attr(value < 5)]
- /// ^^^^^^^^^ what gets parsed
- /// ```
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- #[cfg(feature = "parsing")]
- pub fn parse_args<T: Parse>(&self) -> Result<T> {
- self.parse_args_with(T::parse)
- }
-
- /// Parse the arguments to the attribute using the given parser.
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- #[cfg(feature = "parsing")]
- pub fn parse_args_with<F: Parser>(&self, parser: F) -> Result<F::Output> {
- let parser = |input: ParseStream| {
- let args = enter_args(self, input)?;
- parse::parse_stream(parser, &args)
- };
- parser.parse2(self.tokens.clone())
- }
-
- /// Parses zero or more outer attributes from the stream.
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- #[cfg(feature = "parsing")]
- pub fn parse_outer(input: ParseStream) -> Result<Vec<Self>> {
- let mut attrs = Vec::new();
- while input.peek(Token![#]) {
- attrs.push(input.call(parsing::single_parse_outer)?);
- }
- Ok(attrs)
- }
-
- /// Parses zero or more inner attributes from the stream.
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- #[cfg(feature = "parsing")]
- pub fn parse_inner(input: ParseStream) -> Result<Vec<Self>> {
- let mut attrs = Vec::new();
- while input.peek(Token![#]) && input.peek2(Token![!]) {
- attrs.push(input.call(parsing::single_parse_inner)?);
- }
- Ok(attrs)
- }
- }
-
- #[cfg(feature = "parsing")]
--fn error_expected_args(attr: &Attribute) -> Error {
-+fn expected_parentheses(attr: &Attribute) -> String {
- let style = match attr.style {
- AttrStyle::Outer => "#",
- AttrStyle::Inner(_) => "#!",
- };
-
- let mut path = String::new();
- for segment in &attr.path.segments {
- if !path.is_empty() || attr.path.leading_colon.is_some() {
- path += "::";
- }
- path += &segment.ident.to_string();
- }
-
-- let msg = format!("expected attribute arguments: {}[{}(...)]", style, path);
--
-- #[cfg(feature = "printing")]
-- return Error::new_spanned(attr, msg);
--
-- #[cfg(not(feature = "printing"))]
-- return Error::new(attr.bracket_token.span, msg);
-+ format!("{}[{}(...)]", style, path)
- }
-
- #[cfg(feature = "parsing")]
- fn enter_args<'a>(attr: &Attribute, input: ParseStream<'a>) -> Result<ParseBuffer<'a>> {
- if input.is_empty() {
-- return Err(error_expected_args(attr));
-+ let expected = expected_parentheses(attr);
-+ let msg = format!("expected attribute arguments in parentheses: {}", expected);
-+ return Err(crate::error::new2(
-+ attr.pound_token.span,
-+ attr.bracket_token.span,
-+ msg,
-+ ));
-+ } else if input.peek(Token![=]) {
-+ let expected = expected_parentheses(attr);
-+ let msg = format!("expected parentheses: {}", expected);
-+ return Err(input.error(msg));
- };
-
- let content;
- if input.peek(token::Paren) {
- parenthesized!(content in input);
- } else if input.peek(token::Bracket) {
- bracketed!(content in input);
- } else if input.peek(token::Brace) {
-@@ -293,41 +304,40 @@ fn enter_args<'a>(attr: &Attribute, inpu
- Err(input.error("unexpected token in attribute arguments"))
- }
- }
-
- ast_enum! {
- /// Distinguishes between attributes that decorate an item and attributes
- /// that are contained within an item.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- ///
- /// # Outer attributes
- ///
- /// - `#[repr(transparent)]`
- /// - `/// # Example`
- /// - `/** Please file an issue */`
- ///
- /// # Inner attributes
- ///
- /// - `#![feature(proc_macro)]`
- /// - `//! # Example`
- /// - `/*! Please file an issue */`
-- #[cfg_attr(feature = "clone-impls", derive(Copy))]
- pub enum AttrStyle {
- Outer,
- Inner(Token![!]),
- }
- }
-
- ast_enum_of_structs! {
- /// Content of a compile-time structured attribute.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- ///
- /// ## Path
- ///
- /// A meta path is like the `test` in `#[test]`.
- ///
- /// ## List
- ///
-@@ -355,29 +365,29 @@ ast_enum_of_structs! {
- /// A name-value pair within an attribute, like `feature = "nightly"`.
- NameValue(MetaNameValue),
- }
- }
-
- ast_struct! {
- /// A structured list within an attribute, like `derive(Copy, Clone)`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct MetaList {
- pub path: Path,
- pub paren_token: token::Paren,
- pub nested: Punctuated<NestedMeta, Token![,]>,
- }
- }
-
- ast_struct! {
- /// A name-value pair within an attribute, like `feature = "nightly"`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct MetaNameValue {
- pub path: Path,
- pub eq_token: Token![=],
- pub lit: Lit,
- }
- }
-
-@@ -393,17 +403,17 @@ impl Meta {
- Meta::NameValue(meta) => &meta.path,
- }
- }
- }
-
- ast_enum_of_structs! {
- /// Element of a compile-time attribute list.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub enum NestedMeta {
- /// A structured meta item, like the `Copy` in `#[derive(Copy)]` which
- /// would be a nested `Meta::Path`.
- Meta(Meta),
-
- /// A Rust literal, like the `"new_name"` in `#[rename("new_name")]`.
- Lit(Lit),
-@@ -424,18 +434,18 @@ ast_enum_of_structs! {
- /// /* ... */
- /// }
- /// ```
- ///
- /// The implementation of this macro would want to parse its attribute arguments
- /// as type `AttributeArgs`.
- ///
- /// ```
--/// extern crate proc_macro;
--///
-+/// # extern crate proc_macro;
-+/// #
- /// use proc_macro::TokenStream;
- /// use syn::{parse_macro_input, AttributeArgs, ItemFn};
- ///
- /// # const IGNORE: &str = stringify! {
- /// #[proc_macro_attribute]
- /// # };
- /// pub fn my_attribute(args: TokenStream, input: TokenStream) -> TokenStream {
- /// let args = parse_macro_input!(args as AttributeArgs);
-@@ -459,27 +469,27 @@ where
- T: IntoIterator<Item = &'a Attribute>,
- {
- type Ret = iter::Filter<T::IntoIter, fn(&&Attribute) -> bool>;
-
- fn outer(self) -> Self::Ret {
- fn is_outer(attr: &&Attribute) -> bool {
- match attr.style {
- AttrStyle::Outer => true,
-- _ => false,
-+ AttrStyle::Inner(_) => false,
- }
- }
- self.into_iter().filter(is_outer)
- }
-
- fn inner(self) -> Self::Ret {
- fn is_inner(attr: &&Attribute) -> bool {
- match attr.style {
- AttrStyle::Inner(_) => true,
-- _ => false,
-+ AttrStyle::Outer => false,
- }
- }
- self.into_iter().filter(is_inner)
- }
- }
-
- #[cfg(feature = "parsing")]
- pub mod parsing {
-diff --git a/third_party/rust/syn/src/buffer.rs b/third_party/rust/syn/src/buffer.rs
---- a/third_party/rust/syn/src/buffer.rs
-+++ b/third_party/rust/syn/src/buffer.rs
-@@ -1,12 +1,12 @@
- //! A stably addressed token buffer supporting efficient traversal based on a
- //! cheaply copyable cursor.
- //!
--//! *This module is available if Syn is built with the `"parsing"` feature.*
-+//! *This module is available only if Syn is built with the `"parsing"` feature.*
-
- // This module is heavily commented as it contains most of the unsafe code in
- // Syn, and caution should be used when editing it. The public-facing interface
- // is 100% safe but the implementation is fragile internally.
-
- #[cfg(all(
- not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "wasi"))),
- feature = "proc-macro"
-@@ -31,17 +31,17 @@ enum Entry {
- // token tree, or null if this is the outermost level.
- End(*const Entry),
- }
-
- /// A buffer that can be efficiently traversed multiple times, unlike
- /// `TokenStream` which requires a deep copy in order to traverse more than
- /// once.
- ///
--/// *This type is available if Syn is built with the `"parsing"` feature.*
-+/// *This type is available only if Syn is built with the `"parsing"` feature.*
- pub struct TokenBuffer {
- // NOTE: Do not derive clone on this - there are raw pointers inside which
- // will be messed up. Moving the `TokenBuffer` itself is safe as the actual
- // backing slices won't be moved.
- data: Box<[Entry]>,
- }
-
- impl TokenBuffer {
-@@ -93,17 +93,17 @@ impl TokenBuffer {
- }
-
- TokenBuffer { data: entries }
- }
-
- /// Creates a `TokenBuffer` containing all the tokens from the input
- /// `TokenStream`.
- ///
-- /// *This method is available if Syn is built with both the `"parsing"` and
-+ /// *This method is available only if Syn is built with both the `"parsing"` and
- /// `"proc-macro"` features.*
- #[cfg(all(
- not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "wasi"))),
- feature = "proc-macro"
- ))]
- pub fn new(stream: pm::TokenStream) -> TokenBuffer {
- Self::new2(stream.into())
- }
-@@ -128,18 +128,17 @@ impl TokenBuffer {
- /// and copied around.
- ///
- /// An empty `Cursor` can be created directly, or one may create a `TokenBuffer`
- /// object and get a cursor to its first token with `begin()`.
- ///
- /// Two cursors are equal if they have the same location in the same input
- /// stream, and have the same scope.
- ///
--/// *This type is available if Syn is built with the `"parsing"` feature.*
--#[derive(Copy, Clone, Eq, PartialEq)]
-+/// *This type is available only if Syn is built with the `"parsing"` feature.*
- pub struct Cursor<'a> {
- // The current entry which the `Cursor` is pointing at.
- ptr: *const Entry,
- // This is the only `Entry::End(..)` object which this cursor is allowed to
- // point at. All other `End` objects are skipped over in `Cursor::create`.
- scope: *const Entry,
- // Cursor is covariant in 'a. This field ensures that our pointers are still
- // valid.
-@@ -196,37 +195,38 @@ impl<'a> Cursor<'a> {
-
- /// Bump the cursor to point at the next token after the current one. This
- /// is undefined behavior if the cursor is currently looking at an
- /// `Entry::End`.
- unsafe fn bump(self) -> Cursor<'a> {
- Cursor::create(self.ptr.offset(1), self.scope)
- }
-
-- /// If the cursor is looking at a `None`-delimited group, move it to look at
-- /// the first token inside instead. If the group is empty, this will move
-+ /// While the cursor is looking at a `None`-delimited group, move it to look
-+ /// at the first token inside instead. If the group is empty, this will move
- /// the cursor past the `None`-delimited group.
- ///
- /// WARNING: This mutates its argument.
- fn ignore_none(&mut self) {
-- if let Entry::Group(group, buf) = self.entry() {
-+ while let Entry::Group(group, buf) = self.entry() {
- if group.delimiter() == Delimiter::None {
- // NOTE: We call `Cursor::create` here to make sure that
- // situations where we should immediately exit the span after
- // entering it are handled correctly.
- unsafe {
- *self = Cursor::create(&buf.data[0], self.scope);
- }
-+ } else {
-+ break;
- }
- }
- }
-
- /// Checks whether the cursor is currently pointing at the end of its valid
- /// scope.
-- #[inline]
- pub fn eof(self) -> bool {
- // We're at eof if we're at the end of our scope.
- self.ptr == self.scope
- }
-
- /// If the cursor is pointing at a `Group` with the given delimiter, returns
- /// a cursor into that group and one pointing to the next `TokenTree`.
- pub fn group(mut self, delim: Delimiter) -> Option<(Cursor<'a>, Span, Cursor<'a>)> {
-@@ -337,16 +337,54 @@ impl<'a> Cursor<'a> {
- match self.entry() {
- Entry::Group(group, _) => group.span(),
- Entry::Literal(l) => l.span(),
- Entry::Ident(t) => t.span(),
- Entry::Punct(o) => o.span(),
- Entry::End(..) => Span::call_site(),
- }
- }
-+
-+ /// Skip over the next token without cloning it. Returns `None` if this
-+ /// cursor points to eof.
-+ ///
-+ /// This method treats `'lifetimes` as a single token.
-+ pub(crate) fn skip(self) -> Option<Cursor<'a>> {
-+ match self.entry() {
-+ Entry::End(..) => None,
-+
-+ // Treat lifetimes as a single tt for the purposes of 'skip'.
-+ Entry::Punct(op) if op.as_char() == '\'' && op.spacing() == Spacing::Joint => {
-+ let next = unsafe { self.bump() };
-+ match next.entry() {
-+ Entry::Ident(_) => Some(unsafe { next.bump() }),
-+ _ => Some(next),
-+ }
-+ }
-+ _ => Some(unsafe { self.bump() }),
-+ }
-+ }
-+}
-+
-+impl<'a> Copy for Cursor<'a> {}
-+
-+impl<'a> Clone for Cursor<'a> {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+}
-+
-+impl<'a> Eq for Cursor<'a> {}
-+
-+impl<'a> PartialEq for Cursor<'a> {
-+ fn eq(&self, other: &Self) -> bool {
-+ let Cursor { ptr, scope, marker } = self;
-+ let _ = marker;
-+ *ptr == other.ptr && *scope == other.scope
-+ }
- }
-
- pub(crate) fn same_scope(a: Cursor, b: Cursor) -> bool {
- a.scope == b.scope
- }
-
- pub(crate) fn open_span_of_group(cursor: Cursor) -> Span {
- match cursor.entry() {
-diff --git a/third_party/rust/syn/src/custom_keyword.rs b/third_party/rust/syn/src/custom_keyword.rs
---- a/third_party/rust/syn/src/custom_keyword.rs
-+++ b/third_party/rust/syn/src/custom_keyword.rs
-@@ -81,46 +81,46 @@
- /// value: input.parse()?,
- /// })
- /// } else {
- /// Err(lookahead.error())
- /// }
- /// }
- /// }
- /// ```
--#[macro_export(local_inner_macros)]
-+#[macro_export]
- macro_rules! custom_keyword {
- ($ident:ident) => {
- #[allow(non_camel_case_types)]
- pub struct $ident {
- pub span: $crate::export::Span,
- }
-
- #[doc(hidden)]
-- #[allow(non_snake_case)]
-+ #[allow(dead_code, non_snake_case)]
- pub fn $ident<__S: $crate::export::IntoSpans<[$crate::export::Span; 1]>>(
- span: __S,
- ) -> $ident {
- $ident {
- span: $crate::export::IntoSpans::into_spans(span)[0],
- }
- }
-
- impl $crate::export::Default for $ident {
- fn default() -> Self {
- $ident {
- span: $crate::export::Span::call_site(),
- }
- }
- }
-
-- impl_parse_for_custom_keyword!($ident);
-- impl_to_tokens_for_custom_keyword!($ident);
-- impl_clone_for_custom_keyword!($ident);
-- impl_extra_traits_for_custom_keyword!($ident);
-+ $crate::impl_parse_for_custom_keyword!($ident);
-+ $crate::impl_to_tokens_for_custom_keyword!($ident);
-+ $crate::impl_clone_for_custom_keyword!($ident);
-+ $crate::impl_extra_traits_for_custom_keyword!($ident);
- };
- }
-
- // Not public API.
- #[cfg(feature = "parsing")]
- #[doc(hidden)]
- #[macro_export]
- macro_rules! impl_parse_for_custom_keyword {
-diff --git a/third_party/rust/syn/src/custom_punctuation.rs b/third_party/rust/syn/src/custom_punctuation.rs
---- a/third_party/rust/syn/src/custom_punctuation.rs
-+++ b/third_party/rust/syn/src/custom_punctuation.rs
-@@ -69,67 +69,67 @@
- /// Ok(tokens)
- /// }
- ///
- /// fn main() {
- /// let input = r#" a::b </> c::d::e "#;
- /// let _: PathSegments = syn::parse_str(input).unwrap();
- /// }
- /// ```
--#[macro_export(local_inner_macros)]
-+#[macro_export]
- macro_rules! custom_punctuation {
- ($ident:ident, $($tt:tt)+) => {
- pub struct $ident {
-- pub spans: custom_punctuation_repr!($($tt)+),
-+ pub spans: $crate::custom_punctuation_repr!($($tt)+),
- }
-
- #[doc(hidden)]
-- #[allow(non_snake_case)]
-- pub fn $ident<__S: $crate::export::IntoSpans<custom_punctuation_repr!($($tt)+)>>(
-+ #[allow(dead_code, non_snake_case)]
-+ pub fn $ident<__S: $crate::export::IntoSpans<$crate::custom_punctuation_repr!($($tt)+)>>(
- spans: __S,
- ) -> $ident {
-- let _validate_len = 0 $(+ custom_punctuation_len!(strict, $tt))*;
-+ let _validate_len = 0 $(+ $crate::custom_punctuation_len!(strict, $tt))*;
- $ident {
- spans: $crate::export::IntoSpans::into_spans(spans)
- }
- }
-
- impl $crate::export::Default for $ident {
- fn default() -> Self {
- $ident($crate::export::Span::call_site())
- }
- }
-
-- impl_parse_for_custom_punctuation!($ident, $($tt)+);
-- impl_to_tokens_for_custom_punctuation!($ident, $($tt)+);
-- impl_clone_for_custom_punctuation!($ident, $($tt)+);
-- impl_extra_traits_for_custom_punctuation!($ident, $($tt)+);
-+ $crate::impl_parse_for_custom_punctuation!($ident, $($tt)+);
-+ $crate::impl_to_tokens_for_custom_punctuation!($ident, $($tt)+);
-+ $crate::impl_clone_for_custom_punctuation!($ident, $($tt)+);
-+ $crate::impl_extra_traits_for_custom_punctuation!($ident, $($tt)+);
- };
- }
-
- // Not public API.
- #[cfg(feature = "parsing")]
- #[doc(hidden)]
--#[macro_export(local_inner_macros)]
-+#[macro_export]
- macro_rules! impl_parse_for_custom_punctuation {
- ($ident:ident, $($tt:tt)+) => {
- impl $crate::token::CustomToken for $ident {
- fn peek(cursor: $crate::buffer::Cursor) -> bool {
-- $crate::token::parsing::peek_punct(cursor, stringify_punct!($($tt)+))
-+ $crate::token::parsing::peek_punct(cursor, $crate::stringify_punct!($($tt)+))
- }
-
- fn display() -> &'static $crate::export::str {
-- custom_punctuation_concat!("`", stringify_punct!($($tt)+), "`")
-+ concat!("`", $crate::stringify_punct!($($tt)+), "`")
- }
- }
-
- impl $crate::parse::Parse for $ident {
- fn parse(input: $crate::parse::ParseStream) -> $crate::parse::Result<$ident> {
-- let spans: custom_punctuation_repr!($($tt)+) =
-- $crate::token::parsing::punct(input, stringify_punct!($($tt)+))?;
-+ let spans: $crate::custom_punctuation_repr!($($tt)+) =
-+ $crate::token::parsing::punct(input, $crate::stringify_punct!($($tt)+))?;
- Ok($ident(spans))
- }
- }
- };
- }
-
- // Not public API.
- #[cfg(not(feature = "parsing"))]
-@@ -137,22 +137,22 @@ macro_rules! impl_parse_for_custom_punct
- #[macro_export]
- macro_rules! impl_parse_for_custom_punctuation {
- ($ident:ident, $($tt:tt)+) => {};
- }
-
- // Not public API.
- #[cfg(feature = "printing")]
- #[doc(hidden)]
--#[macro_export(local_inner_macros)]
-+#[macro_export]
- macro_rules! impl_to_tokens_for_custom_punctuation {
- ($ident:ident, $($tt:tt)+) => {
- impl $crate::export::ToTokens for $ident {
- fn to_tokens(&self, tokens: &mut $crate::export::TokenStream2) {
-- $crate::token::printing::punct(stringify_punct!($($tt)+), &self.spans, tokens)
-+ $crate::token::printing::punct($crate::stringify_punct!($($tt)+), &self.spans, tokens)
- }
- }
- };
- }
-
- // Not public API.
- #[cfg(not(feature = "printing"))]
- #[doc(hidden)]
-@@ -216,26 +216,26 @@ macro_rules! impl_extra_traits_for_custo
- #[doc(hidden)]
- #[macro_export]
- macro_rules! impl_extra_traits_for_custom_punctuation {
- ($ident:ident, $($tt:tt)+) => {};
- }
-
- // Not public API.
- #[doc(hidden)]
--#[macro_export(local_inner_macros)]
-+#[macro_export]
- macro_rules! custom_punctuation_repr {
- ($($tt:tt)+) => {
-- [$crate::export::Span; 0 $(+ custom_punctuation_len!(lenient, $tt))+]
-+ [$crate::export::Span; 0 $(+ $crate::custom_punctuation_len!(lenient, $tt))+]
- };
- }
-
- // Not public API.
- #[doc(hidden)]
--#[macro_export(local_inner_macros)]
-+#[macro_export]
- #[rustfmt::skip]
- macro_rules! custom_punctuation_len {
- ($mode:ident, +) => { 1 };
- ($mode:ident, +=) => { 2 };
- ($mode:ident, &) => { 1 };
- ($mode:ident, &&) => { 2 };
- ($mode:ident, &=) => { 2 };
- ($mode:ident, @) => { 1 };
-@@ -274,17 +274,17 @@ macro_rules! custom_punctuation_len {
- ($mode:ident, <<=) => { 3 };
- ($mode:ident, >>) => { 2 };
- ($mode:ident, >>=) => { 3 };
- ($mode:ident, *) => { 1 };
- ($mode:ident, -) => { 1 };
- ($mode:ident, -=) => { 2 };
- ($mode:ident, ~) => { 1 };
- (lenient, $tt:tt) => { 0 };
-- (strict, $tt:tt) => {{ custom_punctuation_unexpected!($tt); 0 }};
-+ (strict, $tt:tt) => {{ $crate::custom_punctuation_unexpected!($tt); 0 }};
- }
-
- // Not public API.
- #[doc(hidden)]
- #[macro_export]
- macro_rules! custom_punctuation_unexpected {
- () => {};
- }
-@@ -292,18 +292,8 @@ macro_rules! custom_punctuation_unexpect
- // Not public API.
- #[doc(hidden)]
- #[macro_export]
- macro_rules! stringify_punct {
- ($($tt:tt)+) => {
- concat!($(stringify!($tt)),+)
- };
- }
--
--// Not public API.
--// Without this, local_inner_macros breaks when looking for concat!
--#[doc(hidden)]
--#[macro_export]
--macro_rules! custom_punctuation_concat {
-- ($($tt:tt)*) => {
-- concat!($($tt)*)
-- };
--}
-diff --git a/third_party/rust/syn/src/data.rs b/third_party/rust/syn/src/data.rs
---- a/third_party/rust/syn/src/data.rs
-+++ b/third_party/rust/syn/src/data.rs
-@@ -1,15 +1,15 @@
- use super::*;
- use crate::punctuated::Punctuated;
-
- ast_struct! {
- /// An enum variant.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct Variant {
- /// Attributes tagged on the variant.
- pub attrs: Vec<Attribute>,
-
- /// Name of the variant.
- pub ident: Ident,
-
-@@ -19,17 +19,17 @@ ast_struct! {
- /// Explicit discriminant: `Variant = 1`
- pub discriminant: Option<(Token![=], Expr)>,
- }
- }
-
- ast_enum_of_structs! {
- /// Data stored within an enum variant or struct.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
- //
-@@ -47,28 +47,28 @@ ast_enum_of_structs! {
- Unit,
- }
- }
-
- ast_struct! {
- /// Named fields of a struct or struct variant such as `Point { x: f64,
- /// y: f64 }`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct FieldsNamed {
- pub brace_token: token::Brace,
- pub named: Punctuated<Field, Token![,]>,
- }
- }
-
- ast_struct! {
- /// Unnamed fields of a tuple struct or tuple variant such as `Some(T)`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct FieldsUnnamed {
- pub paren_token: token::Paren,
- pub unnamed: Punctuated<Field, Token![,]>,
- }
- }
-
- impl Fields {
-@@ -88,16 +88,34 @@ impl Fields {
- /// struct or variant's fields uniformly.
- pub fn iter_mut(&mut self) -> punctuated::IterMut<Field> {
- match self {
- Fields::Unit => crate::punctuated::empty_punctuated_iter_mut(),
- Fields::Named(f) => f.named.iter_mut(),
- Fields::Unnamed(f) => f.unnamed.iter_mut(),
- }
- }
-+
-+ /// Returns the number of fields.
-+ pub fn len(&self) -> usize {
-+ match self {
-+ Fields::Unit => 0,
-+ Fields::Named(f) => f.named.len(),
-+ Fields::Unnamed(f) => f.unnamed.len(),
-+ }
-+ }
-+
-+ /// Returns `true` if there are zero fields.
-+ pub fn is_empty(&self) -> bool {
-+ match self {
-+ Fields::Unit => true,
-+ Fields::Named(f) => f.named.is_empty(),
-+ Fields::Unnamed(f) => f.unnamed.is_empty(),
-+ }
-+ }
- }
-
- impl IntoIterator for Fields {
- type Item = Field;
- type IntoIter = punctuated::IntoIter<Field>;
-
- fn into_iter(self) -> Self::IntoIter {
- match self {
-@@ -124,17 +142,17 @@ impl<'a> IntoIterator for &'a mut Fields
- fn into_iter(self) -> Self::IntoIter {
- self.iter_mut()
- }
- }
-
- ast_struct! {
- /// A field of a struct or enum variant.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct Field {
- /// Attributes tagged on the field.
- pub attrs: Vec<Attribute>,
-
- /// Visibility of the field.
- pub vis: Visibility,
-
-@@ -149,17 +167,17 @@ ast_struct! {
- pub ty: Type,
- }
- }
-
- ast_enum_of_structs! {
- /// The visibility level of an item: inherited or `pub` or
- /// `pub(restricted)`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
- //
-@@ -179,58 +197,61 @@ ast_enum_of_structs! {
- /// An inherited visibility, which usually means private.
- Inherited,
- }
- }
-
- ast_struct! {
- /// A public visibility level: `pub`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct VisPublic {
- pub pub_token: Token![pub],
- }
- }
-
- ast_struct! {
- /// A crate-level visibility: `crate`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct VisCrate {
- pub crate_token: Token![crate],
- }
- }
-
- ast_struct! {
- /// A visibility level restricted to some path: `pub(self)` or
- /// `pub(super)` or `pub(crate)` or `pub(in some::module)`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct VisRestricted {
- pub pub_token: Token![pub],
- pub paren_token: token::Paren,
- pub in_token: Option<Token![in]>,
- pub path: Box<Path>,
- }
- }
-
- #[cfg(feature = "parsing")]
- pub mod parsing {
- use super::*;
-
- use crate::ext::IdentExt;
-+ use crate::parse::discouraged::Speculative;
- use crate::parse::{Parse, ParseStream, Result};
-
- impl Parse for Variant {
- fn parse(input: ParseStream) -> Result<Self> {
-+ let attrs = input.call(Attribute::parse_outer)?;
-+ let _visibility: Visibility = input.parse()?;
- Ok(Variant {
-- attrs: input.call(Attribute::parse_outer)?,
-+ attrs,
- ident: input.parse()?,
- fields: {
- if input.peek(token::Brace) {
- Fields::Named(input.parse()?)
- } else if input.peek(token::Paren) {
- Fields::Unnamed(input.parse()?)
- } else {
- Fields::Unit
-@@ -290,68 +311,99 @@ pub mod parsing {
- colon_token: None,
- ty: input.parse()?,
- })
- }
- }
-
- impl Parse for Visibility {
- fn parse(input: ParseStream) -> Result<Self> {
-+ // Recognize an empty None-delimited group, as produced by a $:vis
-+ // matcher that matched no tokens.
-+ if input.peek(token::Group) {
-+ let ahead = input.fork();
-+ let group = crate::group::parse_group(&ahead)?;
-+ if group.content.is_empty() {
-+ input.advance_to(&ahead);
-+ return Ok(Visibility::Inherited);
-+ }
-+ }
-+
- if input.peek(Token![pub]) {
- Self::parse_pub(input)
- } else if input.peek(Token![crate]) {
- Self::parse_crate(input)
- } else {
- Ok(Visibility::Inherited)
- }
- }
- }
-
- impl Visibility {
- fn parse_pub(input: ParseStream) -> Result<Self> {
- let pub_token = input.parse::<Token![pub]>()?;
-
- if input.peek(token::Paren) {
-- // TODO: optimize using advance_to
- let ahead = input.fork();
-- let mut content;
-- parenthesized!(content in ahead);
-
-+ let content;
-+ let paren_token = parenthesized!(content in ahead);
- if content.peek(Token![crate])
- || content.peek(Token![self])
- || content.peek(Token![super])
- {
-+ let path = content.call(Ident::parse_any)?;
-+
-+ // Ensure there are no additional tokens within `content`.
-+ // Without explicitly checking, we may misinterpret a tuple
-+ // field as a restricted visibility, causing a parse error.
-+ // e.g. `pub (crate::A, crate::B)` (Issue #720).
-+ if content.is_empty() {
-+ input.advance_to(&ahead);
-+ return Ok(Visibility::Restricted(VisRestricted {
-+ pub_token,
-+ paren_token,
-+ in_token: None,
-+ path: Box::new(Path::from(path)),
-+ }));
-+ }
-+ } else if content.peek(Token![in]) {
-+ let in_token: Token![in] = content.parse()?;
-+ let path = content.call(Path::parse_mod_style)?;
-+
-+ input.advance_to(&ahead);
- return Ok(Visibility::Restricted(VisRestricted {
- pub_token,
-- paren_token: parenthesized!(content in input),
-- in_token: None,
-- path: Box::new(Path::from(content.call(Ident::parse_any)?)),
-- }));
-- } else if content.peek(Token![in]) {
-- return Ok(Visibility::Restricted(VisRestricted {
-- pub_token,
-- paren_token: parenthesized!(content in input),
-- in_token: Some(content.parse()?),
-- path: Box::new(content.call(Path::parse_mod_style)?),
-+ paren_token,
-+ in_token: Some(in_token),
-+ path: Box::new(path),
- }));
- }
- }
-
- Ok(Visibility::Public(VisPublic { pub_token }))
- }
-
- fn parse_crate(input: ParseStream) -> Result<Self> {
- if input.peek2(Token![::]) {
- Ok(Visibility::Inherited)
- } else {
- Ok(Visibility::Crate(VisCrate {
- crate_token: input.parse()?,
- }))
- }
- }
-+
-+ #[cfg(feature = "full")]
-+ pub(crate) fn is_some(&self) -> bool {
-+ match self {
-+ Visibility::Inherited => false,
-+ _ => true,
-+ }
-+ }
- }
- }
-
- #[cfg(feature = "printing")]
- mod printing {
- use super::*;
-
- use proc_macro2::TokenStream;
-diff --git a/third_party/rust/syn/src/derive.rs b/third_party/rust/syn/src/derive.rs
---- a/third_party/rust/syn/src/derive.rs
-+++ b/third_party/rust/syn/src/derive.rs
-@@ -1,15 +1,15 @@
- use super::*;
- use crate::punctuated::Punctuated;
-
- ast_struct! {
- /// Data structure sent to a `proc_macro_derive` macro.
- ///
-- /// *This type is available if Syn is built with the `"derive"` feature.*
-+ /// *This type is available only if Syn is built with the `"derive"` feature.*
- pub struct DeriveInput {
- /// Attributes tagged on the whole struct or enum.
- pub attrs: Vec<Attribute>,
-
- /// Visibility of the struct or enum.
- pub vis: Visibility,
-
- /// Name of the struct or enum.
-@@ -21,17 +21,17 @@ ast_struct! {
- /// Data within the struct or enum.
- pub data: Data,
- }
- }
-
- ast_enum_of_structs! {
- /// The storage of a struct, enum or union data structure.
- ///
-- /// *This type is available if Syn is built with the `"derive"` feature.*
-+ /// *This type is available only if Syn is built with the `"derive"` feature.*
- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
- //
- // TODO: change syntax-tree-enum link to an intra rustdoc link, currently
-@@ -48,41 +48,41 @@ ast_enum_of_structs! {
- }
-
- do_not_generate_to_tokens
- }
-
- ast_struct! {
- /// A struct input to a `proc_macro_derive` macro.
- ///
-- /// *This type is available if Syn is built with the `"derive"`
-+ /// *This type is available only if Syn is built with the `"derive"`
- /// feature.*
- pub struct DataStruct {
- pub struct_token: Token![struct],
- pub fields: Fields,
- pub semi_token: Option<Token![;]>,
- }
- }
-
- ast_struct! {
- /// An enum input to a `proc_macro_derive` macro.
- ///
-- /// *This type is available if Syn is built with the `"derive"`
-+ /// *This type is available only if Syn is built with the `"derive"`
- /// feature.*
- pub struct DataEnum {
- pub enum_token: Token![enum],
- pub brace_token: token::Brace,
- pub variants: Punctuated<Variant, Token![,]>,
- }
- }
-
- ast_struct! {
- /// An untagged union input to a `proc_macro_derive` macro.
- ///
-- /// *This type is available if Syn is built with the `"derive"`
-+ /// *This type is available only if Syn is built with the `"derive"`
- /// feature.*
- pub struct DataUnion {
- pub union_token: Token![union],
- pub fields: FieldsNamed,
- }
- }
-
- #[cfg(feature = "parsing")]
-diff --git a/third_party/rust/syn/src/discouraged.rs b/third_party/rust/syn/src/discouraged.rs
---- a/third_party/rust/syn/src/discouraged.rs
-+++ b/third_party/rust/syn/src/discouraged.rs
-@@ -11,17 +11,17 @@ pub trait Speculative {
- /// stream to the fork to "commit" the parsing from the fork to the main
- /// stream.
- ///
- /// If you can avoid doing this, you should, as it limits the ability to
- /// generate useful errors. That said, it is often the only way to parse
- /// syntax of the form `A* B*` for arbitrary syntax `A` and `B`. The problem
- /// is that when the fork fails to parse an `A`, it's impossible to tell
- /// whether that was because of a syntax error and the user meant to provide
-- /// an `A`, or that the `A`s are finished and its time to start parsing
-+ /// an `A`, or that the `A`s are finished and it's time to start parsing
- /// `B`s. Use with care.
- ///
- /// Also note that if `A` is a subset of `B`, `A* B*` can be parsed by
- /// parsing `B*` and removing the leading members of `A` from the
- /// repetition, bypassing the need to involve the downsides associated with
- /// speculative parsing.
- ///
- /// [`ParseStream::fork`]: ParseBuffer::fork
-@@ -67,17 +67,16 @@ pub trait Speculative {
- /// # }
- ///
- /// impl Parse for PathSegment {
- /// fn parse(input: ParseStream) -> Result<Self> {
- /// if input.peek(Token![super])
- /// || input.peek(Token![self])
- /// || input.peek(Token![Self])
- /// || input.peek(Token![crate])
-- /// || input.peek(Token![extern])
- /// {
- /// let ident = input.call(Ident::parse_any)?;
- /// return Ok(PathSegment::from(ident));
- /// }
- ///
- /// let ident = input.parse()?;
- /// if input.peek(Token![::]) && input.peek3(Token![<]) {
- /// return Ok(PathSegment {
-@@ -159,13 +158,37 @@ pub trait Speculative {
- }
-
- impl<'a> Speculative for ParseBuffer<'a> {
- fn advance_to(&self, fork: &Self) {
- if !crate::buffer::same_scope(self.cursor(), fork.cursor()) {
- panic!("Fork was not derived from the advancing parse stream");
- }
-
-+ let (self_unexp, self_sp) = inner_unexpected(self);
-+ let (fork_unexp, fork_sp) = inner_unexpected(fork);
-+ if !Rc::ptr_eq(&self_unexp, &fork_unexp) {
-+ match (fork_sp, self_sp) {
-+ // Unexpected set on the fork, but not on `self`, copy it over.
-+ (Some(span), None) => {
-+ self_unexp.set(Unexpected::Some(span));
-+ }
-+ // Unexpected unset. Use chain to propagate errors from fork.
-+ (None, None) => {
-+ fork_unexp.set(Unexpected::Chain(self_unexp));
-+
-+ // Ensure toplevel 'unexpected' tokens from the fork don't
-+ // bubble up the chain by replacing the root `unexpected`
-+ // pointer, only 'unexpected' tokens from existing group
-+ // parsers should bubble.
-+ fork.unexpected
-+ .set(Some(Rc::new(Cell::new(Unexpected::None))));
-+ }
-+ // Unexpected has been set on `self`. No changes needed.
-+ (_, Some(_)) => {}
-+ }
-+ }
-+
- // See comment on `cell` in the struct definition.
- self.cell
- .set(unsafe { mem::transmute::<Cursor, Cursor<'static>>(fork.cursor()) })
- }
- }
-diff --git a/third_party/rust/syn/src/error.rs b/third_party/rust/syn/src/error.rs
---- a/third_party/rust/syn/src/error.rs
-+++ b/third_party/rust/syn/src/error.rs
-@@ -1,9 +1,8 @@
--use std;
- use std::fmt::{self, Debug, Display};
- use std::iter::FromIterator;
- use std::slice;
- use std::vec;
-
- use proc_macro2::{
- Delimiter, Group, Ident, LexError, Literal, Punct, Spacing, Span, TokenStream, TokenTree,
- };
-@@ -27,18 +26,18 @@ pub type Result<T> = std::result::Result
- /// message than simply panicking the macro.
- ///
- /// [`compile_error!`]: https://doc.rust-lang.org/std/macro.compile_error.html
- ///
- /// When parsing macro input, the [`parse_macro_input!`] macro handles the
- /// conversion to `compile_error!` automatically.
- ///
- /// ```
--/// extern crate proc_macro;
--///
-+/// # extern crate proc_macro;
-+/// #
- /// use proc_macro::TokenStream;
- /// use syn::{parse_macro_input, AttributeArgs, ItemFn};
- ///
- /// # const IGNORE: &str = stringify! {
- /// #[proc_macro_attribute]
- /// # };
- /// pub fn my_attr(args: TokenStream, input: TokenStream) -> TokenStream {
- /// let args = parse_macro_input!(args as AttributeArgs);
-@@ -77,17 +76,16 @@ pub type Result<T> = std::result::Result
- /// # use proc_macro2::TokenStream;
- /// # use syn::{DeriveInput, Result};
- /// #
- /// # pub fn my_derive(input: DeriveInput) -> Result<TokenStream> {
- /// # unimplemented!()
- /// # }
- /// # }
- /// ```
--#[derive(Clone)]
- pub struct Error {
- messages: Vec<ErrorMessage>,
- }
-
- struct ErrorMessage {
- // Span is implemented as an index into a thread-local interner to keep the
- // size small. It is not safe to access from a different thread. We want
- // errors to be Send and Sync to play nicely with the Failure crate, so pin
-@@ -245,16 +243,27 @@ pub fn new_at<T: Display>(scope: Span, c
- if cursor.eof() {
- Error::new(scope, format!("unexpected end of input, {}", message))
- } else {
- let span = crate::buffer::open_span_of_group(cursor);
- Error::new(span, message)
- }
- }
-
-+#[cfg(all(feature = "parsing", any(feature = "full", feature = "derive")))]
-+pub fn new2<T: Display>(start: Span, end: Span, message: T) -> Error {
-+ Error {
-+ messages: vec![ErrorMessage {
-+ start_span: ThreadBound::new(start),
-+ end_span: ThreadBound::new(end),
-+ message: message.to_string(),
-+ }],
-+ }
-+}
-+
- impl Debug for Error {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- if self.messages.len() == 1 {
- formatter
- .debug_tuple("Error")
- .field(&self.messages[0])
- .finish()
- } else {
-@@ -273,16 +282,24 @@ impl Debug for ErrorMessage {
- }
-
- impl Display for Error {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- formatter.write_str(&self.messages[0].message)
- }
- }
-
-+impl Clone for Error {
-+ fn clone(&self) -> Self {
-+ Error {
-+ messages: self.messages.clone(),
-+ }
-+ }
-+}
-+
- impl Clone for ErrorMessage {
- fn clone(&self) -> Self {
- let start = self
- .start_span
- .get()
- .cloned()
- .unwrap_or_else(Span::call_site);
- let end = self.end_span.get().cloned().unwrap_or_else(Span::call_site);
-@@ -350,8 +367,16 @@ impl<'a> Iterator for Iter<'a> {
- type Item = Error;
-
- fn next(&mut self) -> Option<Self::Item> {
- Some(Error {
- messages: vec![self.messages.next()?.clone()],
- })
- }
- }
-+
-+impl Extend<Error> for Error {
-+ fn extend<T: IntoIterator<Item = Error>>(&mut self, iter: T) {
-+ for err in iter {
-+ self.combine(err);
-+ }
-+ }
-+}
-diff --git a/third_party/rust/syn/src/expr.rs b/third_party/rust/syn/src/expr.rs
---- a/third_party/rust/syn/src/expr.rs
-+++ b/third_party/rust/syn/src/expr.rs
-@@ -1,23 +1,26 @@
- use super::*;
- use crate::punctuated::Punctuated;
--#[cfg(feature = "extra-traits")]
--use crate::tt::TokenStreamHelper;
-+#[cfg(feature = "full")]
-+use crate::reserved::Reserved;
- use proc_macro2::{Span, TokenStream};
--#[cfg(feature = "extra-traits")]
-+#[cfg(feature = "printing")]
-+use quote::IdentFragment;
-+#[cfg(feature = "printing")]
-+use std::fmt::{self, Display};
- use std::hash::{Hash, Hasher};
--#[cfg(all(feature = "parsing", feature = "full"))]
-+#[cfg(feature = "parsing")]
- use std::mem;
-
- ast_enum_of_structs! {
- /// A Rust expression.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-- /// feature.*
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
-+ /// feature, but most of the variants are not available unless "full" is enabled.*
- ///
- /// # Syntax tree enums
- ///
- /// This type is a syntax tree enum. In Syn this and other syntax tree enums
- /// are designed to be traversed using the following rebinding idiom.
- ///
- /// ```
- /// # use syn::Expr;
-@@ -78,17 +81,17 @@ ast_enum_of_structs! {
- /// if let Expr::Tuple(base) = *discriminant.base {
- /// # }
- /// # }
- /// ```
- ///
- /// A sign that you may not be choosing the right variable names is if you
- /// see names getting repeated in your code, like accessing
- /// `receiver.receiver` or `pat.pat` or `cond.cond`.
-- pub enum Expr #manual_extra_traits {
-+ pub enum Expr {
- /// A slice literal expression: `[a, b, c, d]`.
- Array(ExprArray),
-
- /// An assignment expression: `a = compute()`.
- Assign(ExprAssign),
-
- /// A compound assignment expression: `counter += 1`.
- AssignOp(ExprAssignOp),
-@@ -223,191 +226,191 @@ ast_enum_of_structs! {
- #[doc(hidden)]
- __Nonexhaustive,
- }
- }
-
- ast_struct! {
- /// A slice literal expression: `[a, b, c, d]`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprArray #full {
- pub attrs: Vec<Attribute>,
- pub bracket_token: token::Bracket,
- pub elems: Punctuated<Expr, Token![,]>,
- }
- }
-
- ast_struct! {
- /// An assignment expression: `a = compute()`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprAssign #full {
- pub attrs: Vec<Attribute>,
- pub left: Box<Expr>,
- pub eq_token: Token![=],
- pub right: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// A compound assignment expression: `counter += 1`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprAssignOp #full {
- pub attrs: Vec<Attribute>,
- pub left: Box<Expr>,
- pub op: BinOp,
- pub right: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// An async block: `async { ... }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprAsync #full {
- pub attrs: Vec<Attribute>,
- pub async_token: Token![async],
- pub capture: Option<Token![move]>,
- pub block: Block,
- }
- }
-
- ast_struct! {
- /// An await expression: `fut.await`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprAwait #full {
- pub attrs: Vec<Attribute>,
- pub base: Box<Expr>,
- pub dot_token: Token![.],
- pub await_token: token::Await,
- }
- }
-
- ast_struct! {
- /// A binary operation: `a + b`, `a * b`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct ExprBinary {
- pub attrs: Vec<Attribute>,
- pub left: Box<Expr>,
- pub op: BinOp,
- pub right: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// A blocked scope: `{ ... }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprBlock #full {
- pub attrs: Vec<Attribute>,
- pub label: Option<Label>,
- pub block: Block,
- }
- }
-
- ast_struct! {
- /// A box expression: `box f`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprBox #full {
- pub attrs: Vec<Attribute>,
- pub box_token: Token![box],
- pub expr: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// A `break`, with an optional label to break and an optional
- /// expression.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprBreak #full {
- pub attrs: Vec<Attribute>,
- pub break_token: Token![break],
- pub label: Option<Lifetime>,
- pub expr: Option<Box<Expr>>,
- }
- }
-
- ast_struct! {
- /// A function call expression: `invoke(a, b)`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct ExprCall {
- pub attrs: Vec<Attribute>,
- pub func: Box<Expr>,
- pub paren_token: token::Paren,
- pub args: Punctuated<Expr, Token![,]>,
- }
- }
-
- ast_struct! {
- /// A cast expression: `foo as f64`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct ExprCast {
- pub attrs: Vec<Attribute>,
- pub expr: Box<Expr>,
- pub as_token: Token![as],
- pub ty: Box<Type>,
- }
- }
-
- ast_struct! {
- /// A closure expression: `|a, b| a + b`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprClosure #full {
- pub attrs: Vec<Attribute>,
- pub asyncness: Option<Token![async]>,
- pub movability: Option<Token![static]>,
- pub capture: Option<Token![move]>,
- pub or1_token: Token![|],
- pub inputs: Punctuated<Pat, Token![,]>,
- pub or2_token: Token![|],
- pub output: ReturnType,
- pub body: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// A `continue`, with an optional label.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprContinue #full {
- pub attrs: Vec<Attribute>,
- pub continue_token: Token![continue],
- pub label: Option<Lifetime>,
- }
- }
-
- ast_struct! {
- /// Access of a named struct field (`obj.k`) or unnamed tuple struct
- /// field (`obj.0`).
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprField {
- pub attrs: Vec<Attribute>,
- pub base: Box<Expr>,
- pub dot_token: Token![.],
- pub member: Member,
- }
- }
-
- ast_struct! {
- /// A for loop: `for pat in expr { ... }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprForLoop #full {
- pub attrs: Vec<Attribute>,
- pub label: Option<Label>,
- pub for_token: Token![for],
- pub pat: Pat,
- pub in_token: Token![in],
- pub expr: Box<Expr>,
- pub body: Block,
-@@ -416,538 +419,312 @@ ast_struct! {
-
- ast_struct! {
- /// An expression contained within invisible delimiters.
- ///
- /// This variant is important for faithfully representing the precedence
- /// of expressions and is related to `None`-delimited spans in a
- /// `TokenStream`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprGroup #full {
- pub attrs: Vec<Attribute>,
- pub group_token: token::Group,
- pub expr: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// An `if` expression with an optional `else` block: `if expr { ... }
- /// else { ... }`.
- ///
- /// The `else` branch expression may only be an `If` or `Block`
- /// expression, not any of the other types of expression.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprIf #full {
- pub attrs: Vec<Attribute>,
- pub if_token: Token![if],
- pub cond: Box<Expr>,
- pub then_branch: Block,
- pub else_branch: Option<(Token![else], Box<Expr>)>,
- }
- }
-
- ast_struct! {
- /// A square bracketed indexing expression: `vector[2]`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct ExprIndex {
- pub attrs: Vec<Attribute>,
- pub expr: Box<Expr>,
- pub bracket_token: token::Bracket,
- pub index: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// A `let` guard: `let Some(x) = opt`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprLet #full {
- pub attrs: Vec<Attribute>,
- pub let_token: Token![let],
- pub pat: Pat,
- pub eq_token: Token![=],
- pub expr: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// A literal in place of an expression: `1`, `"foo"`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct ExprLit {
- pub attrs: Vec<Attribute>,
- pub lit: Lit,
- }
- }
-
- ast_struct! {
- /// Conditionless loop: `loop { ... }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprLoop #full {
- pub attrs: Vec<Attribute>,
- pub label: Option<Label>,
- pub loop_token: Token![loop],
- pub body: Block,
- }
- }
-
- ast_struct! {
- /// A macro invocation expression: `format!("{}", q)`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprMacro #full {
- pub attrs: Vec<Attribute>,
- pub mac: Macro,
- }
- }
-
- ast_struct! {
- /// A `match` expression: `match n { Some(n) => {}, None => {} }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprMatch #full {
- pub attrs: Vec<Attribute>,
- pub match_token: Token![match],
- pub expr: Box<Expr>,
- pub brace_token: token::Brace,
- pub arms: Vec<Arm>,
- }
- }
-
- ast_struct! {
- /// A method call expression: `x.foo::<T>(a, b)`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprMethodCall #full {
- pub attrs: Vec<Attribute>,
- pub receiver: Box<Expr>,
- pub dot_token: Token![.],
- pub method: Ident,
- pub turbofish: Option<MethodTurbofish>,
- pub paren_token: token::Paren,
- pub args: Punctuated<Expr, Token![,]>,
- }
- }
-
- ast_struct! {
- /// A parenthesized expression: `(a + b)`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprParen {
- pub attrs: Vec<Attribute>,
- pub paren_token: token::Paren,
- pub expr: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// A path like `std::mem::replace` possibly containing generic
- /// parameters and a qualified self-type.
- ///
- /// A plain identifier like `x` is a path of length 1.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct ExprPath {
- pub attrs: Vec<Attribute>,
- pub qself: Option<QSelf>,
- pub path: Path,
- }
- }
-
- ast_struct! {
- /// A range expression: `1..2`, `1..`, `..2`, `1..=2`, `..=2`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprRange #full {
- pub attrs: Vec<Attribute>,
- pub from: Option<Box<Expr>>,
- pub limits: RangeLimits,
- pub to: Option<Box<Expr>>,
- }
- }
-
- ast_struct! {
- /// A referencing operation: `&a` or `&mut a`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprReference #full {
- pub attrs: Vec<Attribute>,
- pub and_token: Token![&],
- pub raw: Reserved,
- pub mutability: Option<Token![mut]>,
- pub expr: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// An array literal constructed from one repeated element: `[0u8; N]`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprRepeat #full {
- pub attrs: Vec<Attribute>,
- pub bracket_token: token::Bracket,
- pub expr: Box<Expr>,
- pub semi_token: Token![;],
- pub len: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// A `return`, with an optional value to be returned.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprReturn #full {
- pub attrs: Vec<Attribute>,
- pub return_token: Token![return],
- pub expr: Option<Box<Expr>>,
- }
- }
-
- ast_struct! {
- /// A struct literal expression: `Point { x: 1, y: 1 }`.
- ///
- /// The `rest` provides the value of the remaining fields as in `S { a:
- /// 1, b: 1, ..rest }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprStruct #full {
- pub attrs: Vec<Attribute>,
- pub path: Path,
- pub brace_token: token::Brace,
- pub fields: Punctuated<FieldValue, Token![,]>,
- pub dot2_token: Option<Token![..]>,
- pub rest: Option<Box<Expr>>,
- }
- }
-
- ast_struct! {
- /// A try-expression: `expr?`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprTry #full {
- pub attrs: Vec<Attribute>,
- pub expr: Box<Expr>,
- pub question_token: Token![?],
- }
- }
-
- ast_struct! {
- /// A try block: `try { ... }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprTryBlock #full {
- pub attrs: Vec<Attribute>,
- pub try_token: Token![try],
- pub block: Block,
- }
- }
-
- ast_struct! {
- /// A tuple expression: `(a, b, c, d)`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprTuple #full {
- pub attrs: Vec<Attribute>,
- pub paren_token: token::Paren,
- pub elems: Punctuated<Expr, Token![,]>,
- }
- }
-
- ast_struct! {
- /// A type ascription expression: `foo: f64`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprType #full {
- pub attrs: Vec<Attribute>,
- pub expr: Box<Expr>,
- pub colon_token: Token![:],
- pub ty: Box<Type>,
- }
- }
-
- ast_struct! {
- /// A unary operation: `!x`, `*x`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct ExprUnary {
- pub attrs: Vec<Attribute>,
- pub op: UnOp,
- pub expr: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// An unsafe block: `unsafe { ... }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprUnsafe #full {
- pub attrs: Vec<Attribute>,
- pub unsafe_token: Token![unsafe],
- pub block: Block,
- }
- }
-
- ast_struct! {
- /// A while loop: `while expr { ... }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprWhile #full {
- pub attrs: Vec<Attribute>,
- pub label: Option<Label>,
- pub while_token: Token![while],
- pub cond: Box<Expr>,
- pub body: Block,
- }
- }
-
- ast_struct! {
- /// A yield expression: `yield expr`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ExprYield #full {
- pub attrs: Vec<Attribute>,
- pub yield_token: Token![yield],
- pub expr: Option<Box<Expr>>,
- }
- }
-
--#[cfg(feature = "extra-traits")]
--impl Eq for Expr {}
--
--#[cfg(feature = "extra-traits")]
--impl PartialEq for Expr {
-- fn eq(&self, other: &Self) -> bool {
-- match (self, other) {
-- (Expr::Array(this), Expr::Array(other)) => this == other,
-- (Expr::Assign(this), Expr::Assign(other)) => this == other,
-- (Expr::AssignOp(this), Expr::AssignOp(other)) => this == other,
-- (Expr::Async(this), Expr::Async(other)) => this == other,
-- (Expr::Await(this), Expr::Await(other)) => this == other,
-- (Expr::Binary(this), Expr::Binary(other)) => this == other,
-- (Expr::Block(this), Expr::Block(other)) => this == other,
-- (Expr::Box(this), Expr::Box(other)) => this == other,
-- (Expr::Break(this), Expr::Break(other)) => this == other,
-- (Expr::Call(this), Expr::Call(other)) => this == other,
-- (Expr::Cast(this), Expr::Cast(other)) => this == other,
-- (Expr::Closure(this), Expr::Closure(other)) => this == other,
-- (Expr::Continue(this), Expr::Continue(other)) => this == other,
-- (Expr::Field(this), Expr::Field(other)) => this == other,
-- (Expr::ForLoop(this), Expr::ForLoop(other)) => this == other,
-- (Expr::Group(this), Expr::Group(other)) => this == other,
-- (Expr::If(this), Expr::If(other)) => this == other,
-- (Expr::Index(this), Expr::Index(other)) => this == other,
-- (Expr::Let(this), Expr::Let(other)) => this == other,
-- (Expr::Lit(this), Expr::Lit(other)) => this == other,
-- (Expr::Loop(this), Expr::Loop(other)) => this == other,
-- (Expr::Macro(this), Expr::Macro(other)) => this == other,
-- (Expr::Match(this), Expr::Match(other)) => this == other,
-- (Expr::MethodCall(this), Expr::MethodCall(other)) => this == other,
-- (Expr::Paren(this), Expr::Paren(other)) => this == other,
-- (Expr::Path(this), Expr::Path(other)) => this == other,
-- (Expr::Range(this), Expr::Range(other)) => this == other,
-- (Expr::Reference(this), Expr::Reference(other)) => this == other,
-- (Expr::Repeat(this), Expr::Repeat(other)) => this == other,
-- (Expr::Return(this), Expr::Return(other)) => this == other,
-- (Expr::Struct(this), Expr::Struct(other)) => this == other,
-- (Expr::Try(this), Expr::Try(other)) => this == other,
-- (Expr::TryBlock(this), Expr::TryBlock(other)) => this == other,
-- (Expr::Tuple(this), Expr::Tuple(other)) => this == other,
-- (Expr::Type(this), Expr::Type(other)) => this == other,
-- (Expr::Unary(this), Expr::Unary(other)) => this == other,
-- (Expr::Unsafe(this), Expr::Unsafe(other)) => this == other,
-- (Expr::Verbatim(this), Expr::Verbatim(other)) => {
-- TokenStreamHelper(this) == TokenStreamHelper(other)
-- }
-- (Expr::While(this), Expr::While(other)) => this == other,
-- (Expr::Yield(this), Expr::Yield(other)) => this == other,
-- _ => false,
-- }
-- }
--}
--
--#[cfg(feature = "extra-traits")]
--impl Hash for Expr {
-- fn hash<H>(&self, hash: &mut H)
-- where
-- H: Hasher,
-- {
-- match self {
-- Expr::Array(expr) => {
-- hash.write_u8(0);
-- expr.hash(hash);
-- }
-- Expr::Assign(expr) => {
-- hash.write_u8(1);
-- expr.hash(hash);
-- }
-- Expr::AssignOp(expr) => {
-- hash.write_u8(2);
-- expr.hash(hash);
-- }
-- Expr::Async(expr) => {
-- hash.write_u8(3);
-- expr.hash(hash);
-- }
-- Expr::Await(expr) => {
-- hash.write_u8(4);
-- expr.hash(hash);
-- }
-- Expr::Binary(expr) => {
-- hash.write_u8(5);
-- expr.hash(hash);
-- }
-- Expr::Block(expr) => {
-- hash.write_u8(6);
-- expr.hash(hash);
-- }
-- Expr::Box(expr) => {
-- hash.write_u8(7);
-- expr.hash(hash);
-- }
-- Expr::Break(expr) => {
-- hash.write_u8(8);
-- expr.hash(hash);
-- }
-- Expr::Call(expr) => {
-- hash.write_u8(9);
-- expr.hash(hash);
-- }
-- Expr::Cast(expr) => {
-- hash.write_u8(10);
-- expr.hash(hash);
-- }
-- Expr::Closure(expr) => {
-- hash.write_u8(11);
-- expr.hash(hash);
-- }
-- Expr::Continue(expr) => {
-- hash.write_u8(12);
-- expr.hash(hash);
-- }
-- Expr::Field(expr) => {
-- hash.write_u8(13);
-- expr.hash(hash);
-- }
-- Expr::ForLoop(expr) => {
-- hash.write_u8(14);
-- expr.hash(hash);
-- }
-- Expr::Group(expr) => {
-- hash.write_u8(15);
-- expr.hash(hash);
-- }
-- Expr::If(expr) => {
-- hash.write_u8(16);
-- expr.hash(hash);
-- }
-- Expr::Index(expr) => {
-- hash.write_u8(17);
-- expr.hash(hash);
-- }
-- Expr::Let(expr) => {
-- hash.write_u8(18);
-- expr.hash(hash);
-- }
-- Expr::Lit(expr) => {
-- hash.write_u8(19);
-- expr.hash(hash);
-- }
-- Expr::Loop(expr) => {
-- hash.write_u8(20);
-- expr.hash(hash);
-- }
-- Expr::Macro(expr) => {
-- hash.write_u8(21);
-- expr.hash(hash);
-- }
-- Expr::Match(expr) => {
-- hash.write_u8(22);
-- expr.hash(hash);
-- }
-- Expr::MethodCall(expr) => {
-- hash.write_u8(23);
-- expr.hash(hash);
-- }
-- Expr::Paren(expr) => {
-- hash.write_u8(24);
-- expr.hash(hash);
-- }
-- Expr::Path(expr) => {
-- hash.write_u8(25);
-- expr.hash(hash);
-- }
-- Expr::Range(expr) => {
-- hash.write_u8(26);
-- expr.hash(hash);
-- }
-- Expr::Reference(expr) => {
-- hash.write_u8(27);
-- expr.hash(hash);
-- }
-- Expr::Repeat(expr) => {
-- hash.write_u8(28);
-- expr.hash(hash);
-- }
-- Expr::Return(expr) => {
-- hash.write_u8(29);
-- expr.hash(hash);
-- }
-- Expr::Struct(expr) => {
-- hash.write_u8(30);
-- expr.hash(hash);
-- }
-- Expr::Try(expr) => {
-- hash.write_u8(31);
-- expr.hash(hash);
-- }
-- Expr::TryBlock(expr) => {
-- hash.write_u8(32);
-- expr.hash(hash);
-- }
-- Expr::Tuple(expr) => {
-- hash.write_u8(33);
-- expr.hash(hash);
-- }
-- Expr::Type(expr) => {
-- hash.write_u8(34);
-- expr.hash(hash);
-- }
-- Expr::Unary(expr) => {
-- hash.write_u8(35);
-- expr.hash(hash);
-- }
-- Expr::Unsafe(expr) => {
-- hash.write_u8(36);
-- expr.hash(hash);
-- }
-- Expr::Verbatim(expr) => {
-- hash.write_u8(37);
-- TokenStreamHelper(expr).hash(hash);
-- }
-- Expr::While(expr) => {
-- hash.write_u8(38);
-- expr.hash(hash);
-- }
-- Expr::Yield(expr) => {
-- hash.write_u8(39);
-- expr.hash(hash);
-- }
-- Expr::__Nonexhaustive => unreachable!(),
-- }
-- }
--}
--
- impl Expr {
- #[cfg(all(feature = "parsing", feature = "full"))]
- pub(crate) fn replace_attrs(&mut self, new: Vec<Attribute>) -> Vec<Attribute> {
- match self {
- Expr::Box(ExprBox { attrs, .. })
- | Expr::Array(ExprArray { attrs, .. })
- | Expr::Call(ExprCall { attrs, .. })
- | Expr::MethodCall(ExprMethodCall { attrs, .. })
-@@ -991,107 +768,145 @@ impl Expr {
- }
- }
- }
-
- ast_enum! {
- /// A struct or tuple struct field accessed in a struct literal or field
- /// expression.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub enum Member {
- /// A named field like `self.x`.
- Named(Ident),
- /// An unnamed field like `self.0`.
- Unnamed(Index),
- }
- }
-
-+impl Eq for Member {}
-+
-+impl PartialEq for Member {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (Member::Named(this), Member::Named(other)) => this == other,
-+ (Member::Unnamed(this), Member::Unnamed(other)) => this == other,
-+ _ => false,
-+ }
-+ }
-+}
-+
-+impl Hash for Member {
-+ fn hash<H: Hasher>(&self, state: &mut H) {
-+ match self {
-+ Member::Named(m) => m.hash(state),
-+ Member::Unnamed(m) => m.hash(state),
-+ }
-+ }
-+}
-+
-+#[cfg(feature = "printing")]
-+impl IdentFragment for Member {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ Member::Named(m) => Display::fmt(m, formatter),
-+ Member::Unnamed(m) => Display::fmt(&m.index, formatter),
-+ }
-+ }
-+
-+ fn span(&self) -> Option<Span> {
-+ match self {
-+ Member::Named(m) => Some(m.span()),
-+ Member::Unnamed(m) => Some(m.span),
-+ }
-+ }
-+}
-+
- ast_struct! {
- /// The index of an unnamed tuple struct field.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
-- pub struct Index #manual_extra_traits {
-+ pub struct Index {
- pub index: u32,
- pub span: Span,
- }
- }
-
- impl From<usize> for Index {
- fn from(index: usize) -> Index {
- assert!(index < u32::max_value() as usize);
- Index {
- index: index as u32,
- span: Span::call_site(),
- }
- }
- }
-
--#[cfg(feature = "extra-traits")]
- impl Eq for Index {}
-
--#[cfg(feature = "extra-traits")]
- impl PartialEq for Index {
- fn eq(&self, other: &Self) -> bool {
- self.index == other.index
- }
- }
-
--#[cfg(feature = "extra-traits")]
- impl Hash for Index {
- fn hash<H: Hasher>(&self, state: &mut H) {
- self.index.hash(state);
- }
- }
-
--#[cfg(feature = "full")]
--ast_struct! {
-- #[derive(Default)]
-- pub struct Reserved {
-- private: (),
-+#[cfg(feature = "printing")]
-+impl IdentFragment for Index {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ Display::fmt(&self.index, formatter)
-+ }
-+
-+ fn span(&self) -> Option<Span> {
-+ Some(self.span)
- }
- }
-
- #[cfg(feature = "full")]
- ast_struct! {
- /// The `::<>` explicit type parameters passed to a method call:
- /// `parse::<u64>()`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct MethodTurbofish {
- pub colon2_token: Token![::],
- pub lt_token: Token![<],
- pub args: Punctuated<GenericMethodArgument, Token![,]>,
- pub gt_token: Token![>],
- }
- }
-
- #[cfg(feature = "full")]
- ast_enum! {
- /// An individual generic argument to a method, like `T`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub enum GenericMethodArgument {
- /// A type argument.
- Type(Type),
- /// A const expression. Must be inside of a block.
- ///
- /// NOTE: Identity expressions are represented as Type arguments, as
- /// they are indistinguishable syntactically.
- Const(Expr),
- }
- }
-
- #[cfg(feature = "full")]
- ast_struct! {
- /// A field-value pair in a struct literal.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct FieldValue {
- /// Attributes tagged on the field.
- pub attrs: Vec<Attribute>,
-
- /// Name or index of the field.
- pub member: Member,
-
- /// The colon in `Struct { x: x }`. If written in shorthand like
-@@ -1102,17 +917,17 @@ ast_struct! {
- pub expr: Expr,
- }
- }
-
- #[cfg(feature = "full")]
- ast_struct! {
- /// A lifetime labeling a `for`, `while`, or `loop`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct Label {
- pub name: Lifetime,
- pub colon_token: Token![:],
- }
- }
-
- #[cfg(feature = "full")]
- ast_struct! {
-@@ -1129,45 +944,44 @@ ast_struct! {
- /// }
- /// // ...
- /// # _ => {}
- /// }
- /// # false
- /// # }
- /// ```
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct Arm {
- pub attrs: Vec<Attribute>,
- pub pat: Pat,
- pub guard: Option<(Token![if], Box<Expr>)>,
- pub fat_arrow_token: Token![=>],
- pub body: Box<Expr>,
- pub comma: Option<Token![,]>,
- }
- }
-
- #[cfg(feature = "full")]
- ast_enum! {
- /// Limit types of a range, inclusive or exclusive.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-- #[cfg_attr(feature = "clone-impls", derive(Copy))]
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub enum RangeLimits {
- /// Inclusive at the beginning, exclusive at the end.
- HalfOpen(Token![..]),
- /// Inclusive at the beginning and end.
- Closed(Token![..=]),
- }
- }
-
- #[cfg(any(feature = "parsing", feature = "printing"))]
- #[cfg(feature = "full")]
- pub(crate) fn requires_terminator(expr: &Expr) -> bool {
-- // see https://github.com/rust-lang/rust/blob/eb8f2586e/src/libsyntax/parse/classify.rs#L17-L37
-+ // see https://github.com/rust-lang/rust/blob/2679c38fc/src/librustc_ast/util/classify.rs#L7-L25
- match *expr {
- Expr::Unsafe(..)
- | Expr::Block(..)
- | Expr::If(..)
- | Expr::Match(..)
- | Expr::While(..)
- | Expr::Loop(..)
- | Expr::ForLoop(..)
-@@ -1178,26 +992,27 @@ pub(crate) fn requires_terminator(expr:
- }
-
- #[cfg(feature = "parsing")]
- pub(crate) mod parsing {
- use super::*;
-
- use crate::parse::{Parse, ParseStream, Result};
- use crate::path;
-+ use std::cmp::Ordering;
-+
-+ crate::custom_keyword!(raw);
-
- // When we're parsing expressions which occur before blocks, like in an if
- // statement's condition, we cannot parse a struct literal.
- //
- // Struct literals are ambiguous in certain positions
- // https://github.com/rust-lang/rfcs/pull/92
-- #[derive(Copy, Clone)]
- pub struct AllowStruct(bool);
-
-- #[derive(Copy, Clone, PartialEq, PartialOrd)]
- enum Precedence {
- Any,
- Assign,
- Range,
- Or,
- And,
- Compare,
- BitOr,
-@@ -1241,19 +1056,131 @@ pub(crate) mod parsing {
- }
-
- impl Parse for Expr {
- fn parse(input: ParseStream) -> Result<Self> {
- ambiguous_expr(input, AllowStruct(true))
- }
- }
-
-- #[cfg(feature = "full")]
-- fn expr_no_struct(input: ParseStream) -> Result<Expr> {
-- ambiguous_expr(input, AllowStruct(false))
-+ impl Expr {
-+ /// An alternative to the primary `Expr::parse` parser (from the
-+ /// [`Parse`] trait) for ambiguous syntactic positions in which a
-+ /// trailing brace should not be taken as part of the expression.
-+ ///
-+ /// Rust grammar has an ambiguity where braces sometimes turn a path
-+ /// expression into a struct initialization and sometimes do not. In the
-+ /// following code, the expression `S {}` is one expression. Presumably
-+ /// there is an empty struct `struct S {}` defined somewhere which it is
-+ /// instantiating.
-+ ///
-+ /// ```
-+ /// # struct S;
-+ /// # impl std::ops::Deref for S {
-+ /// # type Target = bool;
-+ /// # fn deref(&self) -> &Self::Target {
-+ /// # &true
-+ /// # }
-+ /// # }
-+ /// let _ = *S {};
-+ ///
-+ /// // parsed by rustc as: `*(S {})`
-+ /// ```
-+ ///
-+ /// We would want to parse the above using `Expr::parse` after the `=`
-+ /// token.
-+ ///
-+ /// But in the following, `S {}` is *not* a struct init expression.
-+ ///
-+ /// ```
-+ /// # const S: &bool = &true;
-+ /// if *S {} {}
-+ ///
-+ /// // parsed by rustc as:
-+ /// //
-+ /// // if (*S) {
-+ /// // /* empty block */
-+ /// // }
-+ /// // {
-+ /// // /* another empty block */
-+ /// // }
-+ /// ```
-+ ///
-+ /// For that reason we would want to parse if-conditions using
-+ /// `Expr::parse_without_eager_brace` after the `if` token. Same for
-+ /// similar syntactic positions such as the condition expr after a
-+ /// `while` token or the expr at the top of a `match`.
-+ ///
-+ /// The Rust grammar's choices around which way this ambiguity is
-+ /// resolved at various syntactic positions is fairly arbitrary. Really
-+ /// either parse behavior could work in most positions, and language
-+ /// designers just decide each case based on which is more likely to be
-+ /// what the programmer had in mind most of the time.
-+ ///
-+ /// ```
-+ /// # struct S;
-+ /// # fn doc() -> S {
-+ /// if return S {} {}
-+ /// # unreachable!()
-+ /// # }
-+ ///
-+ /// // parsed by rustc as:
-+ /// //
-+ /// // if (return (S {})) {
-+ /// // }
-+ /// //
-+ /// // but could equally well have been this other arbitrary choice:
-+ /// //
-+ /// // if (return S) {
-+ /// // }
-+ /// // {}
-+ /// ```
-+ ///
-+ /// Note the grammar ambiguity on trailing braces is distinct from
-+ /// precedence and is not captured by assigning a precedence level to
-+ /// the braced struct init expr in relation to other operators. This can
-+ /// be illustrated by `return 0..S {}` vs `match 0..S {}`. The former
-+ /// parses as `return (0..(S {}))` implying tighter precedence for
-+ /// struct init than `..`, while the latter parses as `match (0..S) {}`
-+ /// implying tighter precedence for `..` than struct init, a
-+ /// contradiction.
-+ #[cfg(feature = "full")]
-+ pub fn parse_without_eager_brace(input: ParseStream) -> Result<Expr> {
-+ ambiguous_expr(input, AllowStruct(false))
-+ }
-+ }
-+
-+ impl Copy for AllowStruct {}
-+
-+ impl Clone for AllowStruct {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+ }
-+
-+ impl Copy for Precedence {}
-+
-+ impl Clone for Precedence {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+ }
-+
-+ impl PartialEq for Precedence {
-+ fn eq(&self, other: &Self) -> bool {
-+ *self as u8 == *other as u8
-+ }
-+ }
-+
-+ impl PartialOrd for Precedence {
-+ fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-+ let this = *self as u8;
-+ let other = *other as u8;
-+ Some(this.cmp(&other))
-+ }
- }
-
- #[cfg(feature = "full")]
- fn parse_expr(
- input: ParseStream,
- mut lhs: Expr,
- allow_struct: AllowStruct,
- base: Precedence,
-@@ -1425,88 +1352,114 @@ pub(crate) mod parsing {
- }
-
- // Parse an arbitrary expression.
- fn ambiguous_expr(input: ParseStream, allow_struct: AllowStruct) -> Result<Expr> {
- let lhs = unary_expr(input, allow_struct)?;
- parse_expr(input, lhs, allow_struct, Precedence::Any)
- }
-
-+ #[cfg(feature = "full")]
-+ fn expr_attrs(input: ParseStream) -> Result<Vec<Attribute>> {
-+ let mut attrs = Vec::new();
-+ loop {
-+ if input.peek(token::Group) {
-+ let ahead = input.fork();
-+ let group = crate::group::parse_group(&ahead)?;
-+ if !group.content.peek(Token![#]) || group.content.peek2(Token![!]) {
-+ break;
-+ }
-+ let attr = group.content.call(attr::parsing::single_parse_outer)?;
-+ if !group.content.is_empty() {
-+ break;
-+ }
-+ attrs.push(attr);
-+ } else if input.peek(Token![#]) {
-+ attrs.push(input.call(attr::parsing::single_parse_outer)?);
-+ } else {
-+ break;
-+ }
-+ }
-+ Ok(attrs)
-+ }
-+
- // <UnOp> <trailer>
- // & <trailer>
- // &mut <trailer>
- // box <trailer>
- #[cfg(feature = "full")]
- fn unary_expr(input: ParseStream, allow_struct: AllowStruct) -> Result<Expr> {
-- // TODO: optimize using advance_to
-- let ahead = input.fork();
-- ahead.call(Attribute::parse_outer)?;
-- if ahead.peek(Token![&])
-- || ahead.peek(Token![box])
-- || ahead.peek(Token![*])
-- || ahead.peek(Token![!])
-- || ahead.peek(Token![-])
-- {
-- let attrs = input.call(Attribute::parse_outer)?;
-- if input.peek(Token![&]) {
-+ let begin = input.fork();
-+ let attrs = input.call(expr_attrs)?;
-+ if input.peek(Token![&]) {
-+ let and_token: Token![&] = input.parse()?;
-+ let raw: Option<raw> =
-+ if input.peek(raw) && (input.peek2(Token![mut]) || input.peek2(Token![const])) {
-+ Some(input.parse()?)
-+ } else {
-+ None
-+ };
-+ let mutability: Option<Token![mut]> = input.parse()?;
-+ if raw.is_some() && mutability.is_none() {
-+ input.parse::<Token![const]>()?;
-+ }
-+ let expr = Box::new(unary_expr(input, allow_struct)?);
-+ if raw.is_some() {
-+ Ok(Expr::Verbatim(verbatim::between(begin, input)))
-+ } else {
- Ok(Expr::Reference(ExprReference {
- attrs,
-- and_token: input.parse()?,
-+ and_token,
- raw: Reserved::default(),
-- mutability: input.parse()?,
-- expr: Box::new(unary_expr(input, allow_struct)?),
-- }))
-- } else if input.peek(Token![box]) {
-- Ok(Expr::Box(ExprBox {
-- attrs,
-- box_token: input.parse()?,
-- expr: Box::new(unary_expr(input, allow_struct)?),
-- }))
-- } else {
-- Ok(Expr::Unary(ExprUnary {
-- attrs,
-- op: input.parse()?,
-- expr: Box::new(unary_expr(input, allow_struct)?),
-+ mutability,
-+ expr,
- }))
- }
-+ } else if input.peek(Token![box]) {
-+ Ok(Expr::Box(ExprBox {
-+ attrs,
-+ box_token: input.parse()?,
-+ expr: Box::new(unary_expr(input, allow_struct)?),
-+ }))
-+ } else if input.peek(Token![*]) || input.peek(Token![!]) || input.peek(Token![-]) {
-+ Ok(Expr::Unary(ExprUnary {
-+ attrs,
-+ op: input.parse()?,
-+ expr: Box::new(unary_expr(input, allow_struct)?),
-+ }))
- } else {
-- trailer_expr(input, allow_struct)
-+ trailer_expr(attrs, input, allow_struct)
- }
- }
-
- #[cfg(not(feature = "full"))]
- fn unary_expr(input: ParseStream, allow_struct: AllowStruct) -> Result<Expr> {
-- // TODO: optimize using advance_to
-- let ahead = input.fork();
-- ahead.call(Attribute::parse_outer)?;
-- if ahead.peek(Token![*]) || ahead.peek(Token![!]) || ahead.peek(Token![-]) {
-+ if input.peek(Token![*]) || input.peek(Token![!]) || input.peek(Token![-]) {
- Ok(Expr::Unary(ExprUnary {
-- attrs: input.call(Attribute::parse_outer)?,
-+ attrs: Vec::new(),
- op: input.parse()?,
- expr: Box::new(unary_expr(input, allow_struct)?),
- }))
- } else {
- trailer_expr(input, allow_struct)
- }
- }
-
- // <atom> (..<args>) ...
- // <atom> . <ident> (..<args>) ...
- // <atom> . <ident> ...
- // <atom> . <lit> ...
- // <atom> [ <expr> ] ...
- // <atom> ? ...
- #[cfg(feature = "full")]
-- fn trailer_expr(input: ParseStream, allow_struct: AllowStruct) -> Result<Expr> {
-- if input.peek(token::Group) {
-- return input.call(expr_group).map(Expr::Group);
-- }
--
-- let outer_attrs = input.call(Attribute::parse_outer)?;
--
-+ fn trailer_expr(
-+ outer_attrs: Vec<Attribute>,
-+ input: ParseStream,
-+ allow_struct: AllowStruct,
-+ ) -> Result<Expr> {
- let atom = atom_expr(input, allow_struct)?;
- let mut e = trailer_helper(input, atom)?;
-
- let inner_attrs = e.replace_attrs(Vec::new());
- let attrs = private::attrs(outer_attrs, inner_attrs);
- e.replace_attrs(attrs);
- Ok(e)
- }
-@@ -1518,28 +1471,36 @@ pub(crate) mod parsing {
- let content;
- e = Expr::Call(ExprCall {
- attrs: Vec::new(),
- func: Box::new(e),
- paren_token: parenthesized!(content in input),
- args: content.parse_terminated(Expr::parse)?,
- });
- } else if input.peek(Token![.]) && !input.peek(Token![..]) {
-- let dot_token: Token![.] = input.parse()?;
-+ let mut dot_token: Token![.] = input.parse()?;
-
-- if input.peek(token::Await) {
-+ let await_token: Option<token::Await> = input.parse()?;
-+ if let Some(await_token) = await_token {
- e = Expr::Await(ExprAwait {
- attrs: Vec::new(),
- base: Box::new(e),
- dot_token,
-- await_token: input.parse()?,
-+ await_token,
- });
- continue;
- }
-
-+ let float_token: Option<LitFloat> = input.parse()?;
-+ if let Some(float_token) = float_token {
-+ if multi_index(&mut e, &mut dot_token, float_token)? {
-+ continue;
-+ }
-+ }
-+
- let member: Member = input.parse()?;
- let turbofish = if member.is_named() && input.peek(Token![::]) {
- Some(MethodTurbofish {
- colon2_token: input.parse()?,
- lt_token: input.parse()?,
- args: {
- let mut args = Punctuated::new();
- loop {
-@@ -1615,20 +1576,27 @@ pub(crate) mod parsing {
- e = Expr::Call(ExprCall {
- attrs: Vec::new(),
- func: Box::new(e),
- paren_token: parenthesized!(content in input),
- args: content.parse_terminated(Expr::parse)?,
- });
- } else if input.peek(Token![.]) && !input.peek(Token![..]) && !input.peek2(token::Await)
- {
-+ let mut dot_token: Token![.] = input.parse()?;
-+ let float_token: Option<LitFloat> = input.parse()?;
-+ if let Some(float_token) = float_token {
-+ if multi_index(&mut e, &mut dot_token, float_token)? {
-+ continue;
-+ }
-+ }
- e = Expr::Field(ExprField {
- attrs: Vec::new(),
- base: Box::new(e),
-- dot_token: input.parse()?,
-+ dot_token,
- member: input.parse()?,
- });
- } else if input.peek(token::Bracket) {
- let content;
- e = Expr::Index(ExprIndex {
- attrs: Vec::new(),
- expr: Box::new(e),
- bracket_token: bracketed!(content in input),
-@@ -1641,17 +1609,21 @@ pub(crate) mod parsing {
-
- Ok(e)
- }
-
- // Parse all atomic expressions which don't have to worry about precedence
- // interactions, as they are fully contained.
- #[cfg(feature = "full")]
- fn atom_expr(input: ParseStream, allow_struct: AllowStruct) -> Result<Expr> {
-- if input.peek(token::Group) {
-+ if input.peek(token::Group)
-+ && !input.peek2(Token![::])
-+ && !input.peek2(Token![!])
-+ && !input.peek2(token::Brace)
-+ {
- input.call(expr_group).map(Expr::Group)
- } else if input.peek(Lit) {
- input.parse().map(Expr::Lit)
- } else if input.peek(Token![async])
- && (input.peek2(token::Brace) || input.peek2(Token![move]) && input.peek3(token::Brace))
- {
- input.call(expr_async).map(Expr::Async)
- } else if input.peek(Token![try]) && input.peek2(token::Brace) {
-@@ -1663,17 +1635,16 @@ pub(crate) mod parsing {
- {
- expr_closure(input, allow_struct).map(Expr::Closure)
- } else if input.peek(Ident)
- || input.peek(Token![::])
- || input.peek(Token![<])
- || input.peek(Token![self])
- || input.peek(Token![Self])
- || input.peek(Token![super])
-- || input.peek(Token![extern])
- || input.peek(Token![crate])
- {
- path_or_macro_or_struct(input, allow_struct)
- } else if input.peek(token::Paren) {
- paren_or_tuple(input)
- } else if input.peek(Token![break]) {
- expr_break(input, allow_struct).map(Expr::Break)
- } else if input.peek(Token![continue]) {
-@@ -1735,17 +1706,16 @@ pub(crate) mod parsing {
- } else if input.peek(token::Paren) {
- input.call(expr_paren).map(Expr::Paren)
- } else if input.peek(Ident)
- || input.peek(Token![::])
- || input.peek(Token![<])
- || input.peek(Token![self])
- || input.peek(Token![Self])
- || input.peek(Token![super])
-- || input.peek(Token![extern])
- || input.peek(Token![crate])
- {
- input.parse().map(Expr::Path)
- } else {
- Err(input.error("unsupported expression; enable syn's features=[\"full\"]"))
- }
- }
-
-@@ -1873,17 +1843,17 @@ pub(crate) mod parsing {
- }))
- } else {
- Err(content.error("expected `,` or `;`"))
- }
- }
-
- #[cfg(feature = "full")]
- pub(crate) fn expr_early(input: ParseStream) -> Result<Expr> {
-- let mut attrs = input.call(Attribute::parse_outer)?;
-+ let mut attrs = input.call(expr_attrs)?;
- let mut expr = if input.peek(Token![if]) {
- Expr::If(input.parse()?)
- } else if input.peek(Token![while]) {
- Expr::While(input.parse()?)
- } else if input.peek(Token![for]) {
- Expr::ForLoop(input.parse()?)
- } else if input.peek(Token![loop]) {
- Expr::Loop(input.parse()?)
-@@ -1900,17 +1870,17 @@ pub(crate) mod parsing {
- let mut expr = unary_expr(input, allow_struct)?;
-
- attrs.extend(expr.replace_attrs(Vec::new()));
- expr.replace_attrs(attrs);
-
- return parse_expr(input, expr, allow_struct, Precedence::Any);
- };
-
-- if input.peek(Token![.]) || input.peek(Token![?]) {
-+ if input.peek(Token![.]) && !input.peek(Token![..]) || input.peek(Token![?]) {
- expr = trailer_helper(input, expr)?;
-
- attrs.extend(expr.replace_attrs(Vec::new()));
- expr.replace_attrs(attrs);
-
- let allow_struct = AllowStruct(true);
- return parse_expr(input, expr, allow_struct, Precedence::Any);
- }
-@@ -1946,63 +1916,48 @@ pub(crate) mod parsing {
- attrs: Vec::new(),
- paren_token: parenthesized!(content in input),
- expr: content.parse()?,
- })
- }
-
- #[cfg(feature = "full")]
- fn generic_method_argument(input: ParseStream) -> Result<GenericMethodArgument> {
-- // TODO parse const generics as well
-+ if input.peek(Lit) {
-+ let lit = input.parse()?;
-+ return Ok(GenericMethodArgument::Const(Expr::Lit(lit)));
-+ }
-+
-+ if input.peek(token::Brace) {
-+ let block = input.call(expr::parsing::expr_block)?;
-+ return Ok(GenericMethodArgument::Const(Expr::Block(block)));
-+ }
-+
- input.parse().map(GenericMethodArgument::Type)
- }
-
- #[cfg(feature = "full")]
- fn expr_let(input: ParseStream) -> Result<ExprLet> {
- Ok(ExprLet {
- attrs: Vec::new(),
- let_token: input.parse()?,
-- pat: {
-- let leading_vert: Option<Token![|]> = input.parse()?;
-- let pat: Pat = input.parse()?;
-- if leading_vert.is_some()
-- || input.peek(Token![|]) && !input.peek(Token![||]) && !input.peek(Token![|=])
-- {
-- let mut cases = Punctuated::new();
-- cases.push_value(pat);
-- while input.peek(Token![|])
-- && !input.peek(Token![||])
-- && !input.peek(Token![|=])
-- {
-- let punct = input.parse()?;
-- cases.push_punct(punct);
-- let pat: Pat = input.parse()?;
-- cases.push_value(pat);
-- }
-- Pat::Or(PatOr {
-- attrs: Vec::new(),
-- leading_vert,
-- cases,
-- })
-- } else {
-- pat
-- }
-- },
-+ pat: pat::parsing::multi_pat_with_leading_vert(input)?,
- eq_token: input.parse()?,
-- expr: Box::new(input.call(expr_no_struct)?),
-+ expr: Box::new(input.call(Expr::parse_without_eager_brace)?),
- })
- }
-
- #[cfg(feature = "full")]
- impl Parse for ExprIf {
- fn parse(input: ParseStream) -> Result<Self> {
-+ let attrs = input.call(Attribute::parse_outer)?;
- Ok(ExprIf {
-- attrs: Vec::new(),
-+ attrs,
- if_token: input.parse()?,
-- cond: Box::new(input.call(expr_no_struct)?),
-+ cond: Box::new(input.call(Expr::parse_without_eager_brace)?),
- then_branch: input.parse()?,
- else_branch: {
- if input.peek(Token![else]) {
- Some(input.call(else_block)?)
- } else {
- None
- }
- },
-@@ -2028,94 +1983,81 @@ pub(crate) mod parsing {
- };
-
- Ok((else_token, Box::new(else_branch)))
- }
-
- #[cfg(feature = "full")]
- impl Parse for ExprForLoop {
- fn parse(input: ParseStream) -> Result<Self> {
-+ let outer_attrs = input.call(Attribute::parse_outer)?;
- let label: Option<Label> = input.parse()?;
- let for_token: Token![for] = input.parse()?;
-
-- let leading_vert: Option<Token![|]> = input.parse()?;
-- let mut pat: Pat = input.parse()?;
-- if leading_vert.is_some() || input.peek(Token![|]) {
-- let mut cases = Punctuated::new();
-- cases.push_value(pat);
-- while input.peek(Token![|]) {
-- let punct = input.parse()?;
-- cases.push_punct(punct);
-- let pat: Pat = input.parse()?;
-- cases.push_value(pat);
-- }
-- pat = Pat::Or(PatOr {
-- attrs: Vec::new(),
-- leading_vert,
-- cases,
-- });
-- }
-+ let pat = pat::parsing::multi_pat_with_leading_vert(input)?;
-
- let in_token: Token![in] = input.parse()?;
-- let expr: Expr = input.call(expr_no_struct)?;
-+ let expr: Expr = input.call(Expr::parse_without_eager_brace)?;
-
- let content;
- let brace_token = braced!(content in input);
- let inner_attrs = content.call(Attribute::parse_inner)?;
- let stmts = content.call(Block::parse_within)?;
-
- Ok(ExprForLoop {
-- attrs: inner_attrs,
-+ attrs: private::attrs(outer_attrs, inner_attrs),
- label,
- for_token,
- pat,
- in_token,
- expr: Box::new(expr),
- body: Block { brace_token, stmts },
- })
- }
- }
-
- #[cfg(feature = "full")]
- impl Parse for ExprLoop {
- fn parse(input: ParseStream) -> Result<Self> {
-+ let outer_attrs = input.call(Attribute::parse_outer)?;
- let label: Option<Label> = input.parse()?;
- let loop_token: Token![loop] = input.parse()?;
-
- let content;
- let brace_token = braced!(content in input);
- let inner_attrs = content.call(Attribute::parse_inner)?;
- let stmts = content.call(Block::parse_within)?;
-
- Ok(ExprLoop {
-- attrs: inner_attrs,
-+ attrs: private::attrs(outer_attrs, inner_attrs),
- label,
- loop_token,
- body: Block { brace_token, stmts },
- })
- }
- }
-
- #[cfg(feature = "full")]
- impl Parse for ExprMatch {
- fn parse(input: ParseStream) -> Result<Self> {
-+ let outer_attrs = input.call(Attribute::parse_outer)?;
- let match_token: Token![match] = input.parse()?;
-- let expr = expr_no_struct(input)?;
-+ let expr = Expr::parse_without_eager_brace(input)?;
-
- let content;
- let brace_token = braced!(content in input);
- let inner_attrs = content.call(Attribute::parse_inner)?;
-
- let mut arms = Vec::new();
- while !content.is_empty() {
- arms.push(content.call(Arm::parse)?);
- }
-
- Ok(ExprMatch {
-- attrs: inner_attrs,
-+ attrs: private::attrs(outer_attrs, inner_attrs),
- match_token,
- expr: Box::new(expr),
- brace_token,
- arms,
- })
- }
- }
-
-@@ -2300,27 +2242,28 @@ pub(crate) mod parsing {
- }
- Ok(pat)
- }
- }
-
- #[cfg(feature = "full")]
- impl Parse for ExprWhile {
- fn parse(input: ParseStream) -> Result<Self> {
-+ let outer_attrs = input.call(Attribute::parse_outer)?;
- let label: Option<Label> = input.parse()?;
- let while_token: Token![while] = input.parse()?;
-- let cond = expr_no_struct(input)?;
-+ let cond = Expr::parse_without_eager_brace(input)?;
-
- let content;
- let brace_token = braced!(content in input);
- let inner_attrs = content.call(Attribute::parse_inner)?;
- let stmts = content.call(Block::parse_within)?;
-
- Ok(ExprWhile {
-- attrs: inner_attrs,
-+ attrs: private::attrs(outer_attrs, inner_attrs),
- label,
- while_token,
- cond: Box::new(cond),
- body: Block { brace_token, stmts },
- })
- }
- }
-
-@@ -2394,16 +2337,17 @@ pub(crate) mod parsing {
- }
- },
- })
- }
-
- #[cfg(feature = "full")]
- impl Parse for FieldValue {
- fn parse(input: ParseStream) -> Result<Self> {
-+ let attrs = input.call(Attribute::parse_outer)?;
- let member: Member = input.parse()?;
- let (colon_token, value) = if input.peek(Token![:]) || !member.is_named() {
- let colon_token: Token![:] = input.parse()?;
- let value: Expr = input.parse()?;
- (Some(colon_token), value)
- } else if let Member::Named(ident) = &member {
- let value = Expr::Path(ExprPath {
- attrs: Vec::new(),
-@@ -2411,73 +2355,63 @@ pub(crate) mod parsing {
- path: Path::from(ident.clone()),
- });
- (None, value)
- } else {
- unreachable!()
- };
-
- Ok(FieldValue {
-- attrs: Vec::new(),
-+ attrs,
- member,
- colon_token,
- expr: value,
- })
- }
- }
-
- #[cfg(feature = "full")]
- fn expr_struct_helper(
- input: ParseStream,
- outer_attrs: Vec<Attribute>,
- path: Path,
- ) -> Result<ExprStruct> {
- let content;
- let brace_token = braced!(content in input);
- let inner_attrs = content.call(Attribute::parse_inner)?;
-+ let attrs = private::attrs(outer_attrs, inner_attrs);
-
- let mut fields = Punctuated::new();
-- loop {
-- let attrs = content.call(Attribute::parse_outer)?;
-- // TODO: optimize using advance_to
-- if content.fork().parse::<Member>().is_err() {
-- if attrs.is_empty() {
-- break;
-- } else {
-- return Err(content.error("expected struct field"));
-- }
-+ while !content.is_empty() {
-+ if content.peek(Token![..]) {
-+ return Ok(ExprStruct {
-+ attrs,
-+ brace_token,
-+ path,
-+ fields,
-+ dot2_token: Some(content.parse()?),
-+ rest: Some(Box::new(content.parse()?)),
-+ });
- }
-
-- fields.push(FieldValue {
-- attrs,
-- ..content.parse()?
-- });
--
-- if !content.peek(Token![,]) {
-+ fields.push(content.parse()?);
-+ if content.is_empty() {
- break;
- }
- let punct: Token![,] = content.parse()?;
- fields.push_punct(punct);
- }
-
-- let (dot2_token, rest) = if fields.empty_or_trailing() && content.peek(Token![..]) {
-- let dot2_token: Token![..] = content.parse()?;
-- let rest: Expr = content.parse()?;
-- (Some(dot2_token), Some(Box::new(rest)))
-- } else {
-- (None, None)
-- };
--
- Ok(ExprStruct {
-- attrs: private::attrs(outer_attrs, inner_attrs),
-+ attrs,
- brace_token,
- path,
- fields,
-- dot2_token,
-- rest,
-+ dot2_token: None,
-+ rest: None,
- })
- }
-
- #[cfg(feature = "full")]
- fn expr_unsafe(input: ParseStream) -> Result<ExprUnsafe> {
- let unsafe_token: Token![unsafe] = input.parse()?;
-
- let content;
-@@ -2572,37 +2506,17 @@ pub(crate) mod parsing {
- }
-
- #[cfg(feature = "full")]
- impl Parse for Arm {
- fn parse(input: ParseStream) -> Result<Arm> {
- let requires_comma;
- Ok(Arm {
- attrs: input.call(Attribute::parse_outer)?,
-- pat: {
-- let leading_vert: Option<Token![|]> = input.parse()?;
-- let pat: Pat = input.parse()?;
-- if leading_vert.is_some() || input.peek(Token![|]) {
-- let mut cases = Punctuated::new();
-- cases.push_value(pat);
-- while input.peek(Token![|]) {
-- let punct = input.parse()?;
-- cases.push_punct(punct);
-- let pat: Pat = input.parse()?;
-- cases.push_value(pat);
-- }
-- Pat::Or(PatOr {
-- attrs: Vec::new(),
-- leading_vert,
-- cases,
-- })
-- } else {
-- pat
-- }
-- },
-+ pat: pat::parsing::multi_pat_with_leading_vert(input)?,
- guard: {
- if input.peek(Token![if]) {
- let if_token: Token![if] = input.parse()?;
- let guard: Expr = input.parse()?;
- Some((if_token, Box::new(guard)))
- } else {
- None
- }
-@@ -2636,16 +2550,36 @@ pub(crate) mod parsing {
- span: lit.span(),
- })
- } else {
- Err(Error::new(lit.span(), "expected unsuffixed integer"))
- }
- }
- }
-
-+ fn multi_index(e: &mut Expr, dot_token: &mut Token![.], float: LitFloat) -> Result<bool> {
-+ let mut float_repr = float.to_string();
-+ let trailing_dot = float_repr.ends_with('.');
-+ if trailing_dot {
-+ float_repr.truncate(float_repr.len() - 1);
-+ }
-+ for part in float_repr.split('.') {
-+ let index = crate::parse_str(part).map_err(|err| Error::new(float.span(), err))?;
-+ let base = mem::replace(e, Expr::__Nonexhaustive);
-+ *e = Expr::Field(ExprField {
-+ attrs: Vec::new(),
-+ base: Box::new(base),
-+ dot_token: Token,
-+ member: Member::Unnamed(index),
-+ });
-+ *dot_token = Token);
-+ }
-+ Ok(!trailing_dot)
-+ }
-+
- #[cfg(feature = "full")]
- impl Member {
- fn is_named(&self) -> bool {
- match *self {
- Member::Named(_) => true,
- Member::Unnamed(_) => false,
- }
- }
-diff --git a/third_party/rust/syn/src/ext.rs b/third_party/rust/syn/src/ext.rs
---- a/third_party/rust/syn/src/ext.rs
-+++ b/third_party/rust/syn/src/ext.rs
-@@ -1,27 +1,27 @@
- //! Extension traits to provide parsing methods on foreign types.
- //!
--//! *This module is available if Syn is built with the `"parsing"` feature.*
-+//! *This module is available only if Syn is built with the `"parsing"` feature.*
-
- use proc_macro2::Ident;
-
- use crate::parse::{ParseStream, Result};
-
- use crate::buffer::Cursor;
- use crate::parse::Peek;
- use crate::sealed::lookahead;
- use crate::token::CustomToken;
-
- /// Additional methods for `Ident` not provided by proc-macro2 or libproc_macro.
- ///
- /// This trait is sealed and cannot be implemented for types outside of Syn. It
- /// is implemented only for `proc_macro2::Ident`.
- ///
--/// *This trait is available if Syn is built with the `"parsing"` feature.*
-+/// *This trait is available only if Syn is built with the `"parsing"` feature.*
- pub trait IdentExt: Sized + private::Sealed {
- /// Parses any identifier including keywords.
- ///
- /// This is useful when parsing macro input which allows Rust keywords as
- /// identifiers.
- ///
- /// # Example
- ///
-@@ -124,12 +124,18 @@ impl lookahead::Sealed for private::Peek
-
- mod private {
- use proc_macro2::Ident;
-
- pub trait Sealed {}
-
- impl Sealed for Ident {}
-
-- #[derive(Copy, Clone)]
- pub struct PeekFn;
- pub struct IdentAny;
-+
-+ impl Copy for PeekFn {}
-+ impl Clone for PeekFn {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+ }
- }
-diff --git a/third_party/rust/syn/src/file.rs b/third_party/rust/syn/src/file.rs
---- a/third_party/rust/syn/src/file.rs
-+++ b/third_party/rust/syn/src/file.rs
-@@ -1,14 +1,14 @@
- use super::*;
-
- ast_struct! {
- /// A complete file of Rust source code.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- ///
- /// # Example
- ///
- /// Parse a Rust source file into a `syn::File` and print out a debug
- /// representation of the syntax tree.
- ///
- /// ```
- /// use std::env;
-@@ -32,16 +32,18 @@ ast_struct! {
- /// };
- ///
- /// let mut file = File::open(&filename).expect("Unable to open file");
- ///
- /// let mut src = String::new();
- /// file.read_to_string(&mut src).expect("Unable to read file");
- ///
- /// let syntax = syn::parse_file(&src).expect("Unable to parse file");
-+ ///
-+ /// // Debug impl is available if Syn is built with "extra-traits" feature.
- /// println!("{:#?}", syntax);
- /// }
- /// ```
- ///
- /// Running with its own source code as input, this program prints output
- /// that begins with:
- ///
- /// ```text
-diff --git a/third_party/rust/syn/src/gen/clone.rs b/third_party/rust/syn/src/gen/clone.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/src/gen/clone.rs
-@@ -0,0 +1,2051 @@
-+// This file is @generated by syn-internal-codegen.
-+// It is not intended for manual editing.
-+
-+#![allow(clippy::clone_on_copy, clippy::expl_impl_clone_on_copy)]
-+use crate::*;
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Abi {
-+ fn clone(&self) -> Self {
-+ Abi {
-+ extern_token: self.extern_token.clone(),
-+ name: self.name.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for AngleBracketedGenericArguments {
-+ fn clone(&self) -> Self {
-+ AngleBracketedGenericArguments {
-+ colon2_token: self.colon2_token.clone(),
-+ lt_token: self.lt_token.clone(),
-+ args: self.args.clone(),
-+ gt_token: self.gt_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for Arm {
-+ fn clone(&self) -> Self {
-+ Arm {
-+ attrs: self.attrs.clone(),
-+ pat: self.pat.clone(),
-+ guard: self.guard.clone(),
-+ fat_arrow_token: self.fat_arrow_token.clone(),
-+ body: self.body.clone(),
-+ comma: self.comma.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Copy for AttrStyle {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for AttrStyle {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Attribute {
-+ fn clone(&self) -> Self {
-+ Attribute {
-+ pound_token: self.pound_token.clone(),
-+ style: self.style.clone(),
-+ bracket_token: self.bracket_token.clone(),
-+ path: self.path.clone(),
-+ tokens: self.tokens.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for BareFnArg {
-+ fn clone(&self) -> Self {
-+ BareFnArg {
-+ attrs: self.attrs.clone(),
-+ name: self.name.clone(),
-+ ty: self.ty.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Copy for BinOp {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for BinOp {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Binding {
-+ fn clone(&self) -> Self {
-+ Binding {
-+ ident: self.ident.clone(),
-+ eq_token: self.eq_token.clone(),
-+ ty: self.ty.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for Block {
-+ fn clone(&self) -> Self {
-+ Block {
-+ brace_token: self.brace_token.clone(),
-+ stmts: self.stmts.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for BoundLifetimes {
-+ fn clone(&self) -> Self {
-+ BoundLifetimes {
-+ for_token: self.for_token.clone(),
-+ lt_token: self.lt_token.clone(),
-+ lifetimes: self.lifetimes.clone(),
-+ gt_token: self.gt_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for ConstParam {
-+ fn clone(&self) -> Self {
-+ ConstParam {
-+ attrs: self.attrs.clone(),
-+ const_token: self.const_token.clone(),
-+ ident: self.ident.clone(),
-+ colon_token: self.colon_token.clone(),
-+ ty: self.ty.clone(),
-+ eq_token: self.eq_token.clone(),
-+ default: self.default.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Constraint {
-+ fn clone(&self) -> Self {
-+ Constraint {
-+ ident: self.ident.clone(),
-+ colon_token: self.colon_token.clone(),
-+ bounds: self.bounds.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Clone for Data {
-+ fn clone(&self) -> Self {
-+ match self {
-+ Data::Struct(v0) => Data::Struct(v0.clone()),
-+ Data::Enum(v0) => Data::Enum(v0.clone()),
-+ Data::Union(v0) => Data::Union(v0.clone()),
-+ }
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Clone for DataEnum {
-+ fn clone(&self) -> Self {
-+ DataEnum {
-+ enum_token: self.enum_token.clone(),
-+ brace_token: self.brace_token.clone(),
-+ variants: self.variants.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Clone for DataStruct {
-+ fn clone(&self) -> Self {
-+ DataStruct {
-+ struct_token: self.struct_token.clone(),
-+ fields: self.fields.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Clone for DataUnion {
-+ fn clone(&self) -> Self {
-+ DataUnion {
-+ union_token: self.union_token.clone(),
-+ fields: self.fields.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Clone for DeriveInput {
-+ fn clone(&self) -> Self {
-+ DeriveInput {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ ident: self.ident.clone(),
-+ generics: self.generics.clone(),
-+ data: self.data.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Expr {
-+ fn clone(&self) -> Self {
-+ match self {
-+ #[cfg(feature = "full")]
-+ Expr::Array(v0) => Expr::Array(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Assign(v0) => Expr::Assign(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::AssignOp(v0) => Expr::AssignOp(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Async(v0) => Expr::Async(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Await(v0) => Expr::Await(v0.clone()),
-+ Expr::Binary(v0) => Expr::Binary(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Block(v0) => Expr::Block(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Box(v0) => Expr::Box(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Break(v0) => Expr::Break(v0.clone()),
-+ Expr::Call(v0) => Expr::Call(v0.clone()),
-+ Expr::Cast(v0) => Expr::Cast(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Closure(v0) => Expr::Closure(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Continue(v0) => Expr::Continue(v0.clone()),
-+ Expr::Field(v0) => Expr::Field(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::ForLoop(v0) => Expr::ForLoop(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Group(v0) => Expr::Group(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::If(v0) => Expr::If(v0.clone()),
-+ Expr::Index(v0) => Expr::Index(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Let(v0) => Expr::Let(v0.clone()),
-+ Expr::Lit(v0) => Expr::Lit(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Loop(v0) => Expr::Loop(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Macro(v0) => Expr::Macro(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Match(v0) => Expr::Match(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::MethodCall(v0) => Expr::MethodCall(v0.clone()),
-+ Expr::Paren(v0) => Expr::Paren(v0.clone()),
-+ Expr::Path(v0) => Expr::Path(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Range(v0) => Expr::Range(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Reference(v0) => Expr::Reference(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Repeat(v0) => Expr::Repeat(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Return(v0) => Expr::Return(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Struct(v0) => Expr::Struct(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Try(v0) => Expr::Try(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::TryBlock(v0) => Expr::TryBlock(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Tuple(v0) => Expr::Tuple(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Type(v0) => Expr::Type(v0.clone()),
-+ Expr::Unary(v0) => Expr::Unary(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Unsafe(v0) => Expr::Unsafe(v0.clone()),
-+ Expr::Verbatim(v0) => Expr::Verbatim(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::While(v0) => Expr::While(v0.clone()),
-+ #[cfg(feature = "full")]
-+ Expr::Yield(v0) => Expr::Yield(v0.clone()),
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprArray {
-+ fn clone(&self) -> Self {
-+ ExprArray {
-+ attrs: self.attrs.clone(),
-+ bracket_token: self.bracket_token.clone(),
-+ elems: self.elems.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprAssign {
-+ fn clone(&self) -> Self {
-+ ExprAssign {
-+ attrs: self.attrs.clone(),
-+ left: self.left.clone(),
-+ eq_token: self.eq_token.clone(),
-+ right: self.right.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprAssignOp {
-+ fn clone(&self) -> Self {
-+ ExprAssignOp {
-+ attrs: self.attrs.clone(),
-+ left: self.left.clone(),
-+ op: self.op.clone(),
-+ right: self.right.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprAsync {
-+ fn clone(&self) -> Self {
-+ ExprAsync {
-+ attrs: self.attrs.clone(),
-+ async_token: self.async_token.clone(),
-+ capture: self.capture.clone(),
-+ block: self.block.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprAwait {
-+ fn clone(&self) -> Self {
-+ ExprAwait {
-+ attrs: self.attrs.clone(),
-+ base: self.base.clone(),
-+ dot_token: self.dot_token.clone(),
-+ await_token: self.await_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for ExprBinary {
-+ fn clone(&self) -> Self {
-+ ExprBinary {
-+ attrs: self.attrs.clone(),
-+ left: self.left.clone(),
-+ op: self.op.clone(),
-+ right: self.right.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprBlock {
-+ fn clone(&self) -> Self {
-+ ExprBlock {
-+ attrs: self.attrs.clone(),
-+ label: self.label.clone(),
-+ block: self.block.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprBox {
-+ fn clone(&self) -> Self {
-+ ExprBox {
-+ attrs: self.attrs.clone(),
-+ box_token: self.box_token.clone(),
-+ expr: self.expr.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprBreak {
-+ fn clone(&self) -> Self {
-+ ExprBreak {
-+ attrs: self.attrs.clone(),
-+ break_token: self.break_token.clone(),
-+ label: self.label.clone(),
-+ expr: self.expr.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for ExprCall {
-+ fn clone(&self) -> Self {
-+ ExprCall {
-+ attrs: self.attrs.clone(),
-+ func: self.func.clone(),
-+ paren_token: self.paren_token.clone(),
-+ args: self.args.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for ExprCast {
-+ fn clone(&self) -> Self {
-+ ExprCast {
-+ attrs: self.attrs.clone(),
-+ expr: self.expr.clone(),
-+ as_token: self.as_token.clone(),
-+ ty: self.ty.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprClosure {
-+ fn clone(&self) -> Self {
-+ ExprClosure {
-+ attrs: self.attrs.clone(),
-+ asyncness: self.asyncness.clone(),
-+ movability: self.movability.clone(),
-+ capture: self.capture.clone(),
-+ or1_token: self.or1_token.clone(),
-+ inputs: self.inputs.clone(),
-+ or2_token: self.or2_token.clone(),
-+ output: self.output.clone(),
-+ body: self.body.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprContinue {
-+ fn clone(&self) -> Self {
-+ ExprContinue {
-+ attrs: self.attrs.clone(),
-+ continue_token: self.continue_token.clone(),
-+ label: self.label.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for ExprField {
-+ fn clone(&self) -> Self {
-+ ExprField {
-+ attrs: self.attrs.clone(),
-+ base: self.base.clone(),
-+ dot_token: self.dot_token.clone(),
-+ member: self.member.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprForLoop {
-+ fn clone(&self) -> Self {
-+ ExprForLoop {
-+ attrs: self.attrs.clone(),
-+ label: self.label.clone(),
-+ for_token: self.for_token.clone(),
-+ pat: self.pat.clone(),
-+ in_token: self.in_token.clone(),
-+ expr: self.expr.clone(),
-+ body: self.body.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprGroup {
-+ fn clone(&self) -> Self {
-+ ExprGroup {
-+ attrs: self.attrs.clone(),
-+ group_token: self.group_token.clone(),
-+ expr: self.expr.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprIf {
-+ fn clone(&self) -> Self {
-+ ExprIf {
-+ attrs: self.attrs.clone(),
-+ if_token: self.if_token.clone(),
-+ cond: self.cond.clone(),
-+ then_branch: self.then_branch.clone(),
-+ else_branch: self.else_branch.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for ExprIndex {
-+ fn clone(&self) -> Self {
-+ ExprIndex {
-+ attrs: self.attrs.clone(),
-+ expr: self.expr.clone(),
-+ bracket_token: self.bracket_token.clone(),
-+ index: self.index.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprLet {
-+ fn clone(&self) -> Self {
-+ ExprLet {
-+ attrs: self.attrs.clone(),
-+ let_token: self.let_token.clone(),
-+ pat: self.pat.clone(),
-+ eq_token: self.eq_token.clone(),
-+ expr: self.expr.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for ExprLit {
-+ fn clone(&self) -> Self {
-+ ExprLit {
-+ attrs: self.attrs.clone(),
-+ lit: self.lit.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprLoop {
-+ fn clone(&self) -> Self {
-+ ExprLoop {
-+ attrs: self.attrs.clone(),
-+ label: self.label.clone(),
-+ loop_token: self.loop_token.clone(),
-+ body: self.body.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprMacro {
-+ fn clone(&self) -> Self {
-+ ExprMacro {
-+ attrs: self.attrs.clone(),
-+ mac: self.mac.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprMatch {
-+ fn clone(&self) -> Self {
-+ ExprMatch {
-+ attrs: self.attrs.clone(),
-+ match_token: self.match_token.clone(),
-+ expr: self.expr.clone(),
-+ brace_token: self.brace_token.clone(),
-+ arms: self.arms.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprMethodCall {
-+ fn clone(&self) -> Self {
-+ ExprMethodCall {
-+ attrs: self.attrs.clone(),
-+ receiver: self.receiver.clone(),
-+ dot_token: self.dot_token.clone(),
-+ method: self.method.clone(),
-+ turbofish: self.turbofish.clone(),
-+ paren_token: self.paren_token.clone(),
-+ args: self.args.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for ExprParen {
-+ fn clone(&self) -> Self {
-+ ExprParen {
-+ attrs: self.attrs.clone(),
-+ paren_token: self.paren_token.clone(),
-+ expr: self.expr.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for ExprPath {
-+ fn clone(&self) -> Self {
-+ ExprPath {
-+ attrs: self.attrs.clone(),
-+ qself: self.qself.clone(),
-+ path: self.path.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprRange {
-+ fn clone(&self) -> Self {
-+ ExprRange {
-+ attrs: self.attrs.clone(),
-+ from: self.from.clone(),
-+ limits: self.limits.clone(),
-+ to: self.to.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprReference {
-+ fn clone(&self) -> Self {
-+ ExprReference {
-+ attrs: self.attrs.clone(),
-+ and_token: self.and_token.clone(),
-+ raw: self.raw.clone(),
-+ mutability: self.mutability.clone(),
-+ expr: self.expr.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprRepeat {
-+ fn clone(&self) -> Self {
-+ ExprRepeat {
-+ attrs: self.attrs.clone(),
-+ bracket_token: self.bracket_token.clone(),
-+ expr: self.expr.clone(),
-+ semi_token: self.semi_token.clone(),
-+ len: self.len.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprReturn {
-+ fn clone(&self) -> Self {
-+ ExprReturn {
-+ attrs: self.attrs.clone(),
-+ return_token: self.return_token.clone(),
-+ expr: self.expr.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprStruct {
-+ fn clone(&self) -> Self {
-+ ExprStruct {
-+ attrs: self.attrs.clone(),
-+ path: self.path.clone(),
-+ brace_token: self.brace_token.clone(),
-+ fields: self.fields.clone(),
-+ dot2_token: self.dot2_token.clone(),
-+ rest: self.rest.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprTry {
-+ fn clone(&self) -> Self {
-+ ExprTry {
-+ attrs: self.attrs.clone(),
-+ expr: self.expr.clone(),
-+ question_token: self.question_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprTryBlock {
-+ fn clone(&self) -> Self {
-+ ExprTryBlock {
-+ attrs: self.attrs.clone(),
-+ try_token: self.try_token.clone(),
-+ block: self.block.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprTuple {
-+ fn clone(&self) -> Self {
-+ ExprTuple {
-+ attrs: self.attrs.clone(),
-+ paren_token: self.paren_token.clone(),
-+ elems: self.elems.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprType {
-+ fn clone(&self) -> Self {
-+ ExprType {
-+ attrs: self.attrs.clone(),
-+ expr: self.expr.clone(),
-+ colon_token: self.colon_token.clone(),
-+ ty: self.ty.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for ExprUnary {
-+ fn clone(&self) -> Self {
-+ ExprUnary {
-+ attrs: self.attrs.clone(),
-+ op: self.op.clone(),
-+ expr: self.expr.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprUnsafe {
-+ fn clone(&self) -> Self {
-+ ExprUnsafe {
-+ attrs: self.attrs.clone(),
-+ unsafe_token: self.unsafe_token.clone(),
-+ block: self.block.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprWhile {
-+ fn clone(&self) -> Self {
-+ ExprWhile {
-+ attrs: self.attrs.clone(),
-+ label: self.label.clone(),
-+ while_token: self.while_token.clone(),
-+ cond: self.cond.clone(),
-+ body: self.body.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ExprYield {
-+ fn clone(&self) -> Self {
-+ ExprYield {
-+ attrs: self.attrs.clone(),
-+ yield_token: self.yield_token.clone(),
-+ expr: self.expr.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Field {
-+ fn clone(&self) -> Self {
-+ Field {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ ident: self.ident.clone(),
-+ colon_token: self.colon_token.clone(),
-+ ty: self.ty.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for FieldPat {
-+ fn clone(&self) -> Self {
-+ FieldPat {
-+ attrs: self.attrs.clone(),
-+ member: self.member.clone(),
-+ colon_token: self.colon_token.clone(),
-+ pat: self.pat.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for FieldValue {
-+ fn clone(&self) -> Self {
-+ FieldValue {
-+ attrs: self.attrs.clone(),
-+ member: self.member.clone(),
-+ colon_token: self.colon_token.clone(),
-+ expr: self.expr.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Fields {
-+ fn clone(&self) -> Self {
-+ match self {
-+ Fields::Named(v0) => Fields::Named(v0.clone()),
-+ Fields::Unnamed(v0) => Fields::Unnamed(v0.clone()),
-+ Fields::Unit => Fields::Unit,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for FieldsNamed {
-+ fn clone(&self) -> Self {
-+ FieldsNamed {
-+ brace_token: self.brace_token.clone(),
-+ named: self.named.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for FieldsUnnamed {
-+ fn clone(&self) -> Self {
-+ FieldsUnnamed {
-+ paren_token: self.paren_token.clone(),
-+ unnamed: self.unnamed.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for File {
-+ fn clone(&self) -> Self {
-+ File {
-+ shebang: self.shebang.clone(),
-+ attrs: self.attrs.clone(),
-+ items: self.items.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for FnArg {
-+ fn clone(&self) -> Self {
-+ match self {
-+ FnArg::Receiver(v0) => FnArg::Receiver(v0.clone()),
-+ FnArg::Typed(v0) => FnArg::Typed(v0.clone()),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ForeignItem {
-+ fn clone(&self) -> Self {
-+ match self {
-+ ForeignItem::Fn(v0) => ForeignItem::Fn(v0.clone()),
-+ ForeignItem::Static(v0) => ForeignItem::Static(v0.clone()),
-+ ForeignItem::Type(v0) => ForeignItem::Type(v0.clone()),
-+ ForeignItem::Macro(v0) => ForeignItem::Macro(v0.clone()),
-+ ForeignItem::Verbatim(v0) => ForeignItem::Verbatim(v0.clone()),
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ForeignItemFn {
-+ fn clone(&self) -> Self {
-+ ForeignItemFn {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ sig: self.sig.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ForeignItemMacro {
-+ fn clone(&self) -> Self {
-+ ForeignItemMacro {
-+ attrs: self.attrs.clone(),
-+ mac: self.mac.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ForeignItemStatic {
-+ fn clone(&self) -> Self {
-+ ForeignItemStatic {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ static_token: self.static_token.clone(),
-+ mutability: self.mutability.clone(),
-+ ident: self.ident.clone(),
-+ colon_token: self.colon_token.clone(),
-+ ty: self.ty.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ForeignItemType {
-+ fn clone(&self) -> Self {
-+ ForeignItemType {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ type_token: self.type_token.clone(),
-+ ident: self.ident.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for GenericArgument {
-+ fn clone(&self) -> Self {
-+ match self {
-+ GenericArgument::Lifetime(v0) => GenericArgument::Lifetime(v0.clone()),
-+ GenericArgument::Type(v0) => GenericArgument::Type(v0.clone()),
-+ GenericArgument::Binding(v0) => GenericArgument::Binding(v0.clone()),
-+ GenericArgument::Constraint(v0) => GenericArgument::Constraint(v0.clone()),
-+ GenericArgument::Const(v0) => GenericArgument::Const(v0.clone()),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for GenericMethodArgument {
-+ fn clone(&self) -> Self {
-+ match self {
-+ GenericMethodArgument::Type(v0) => GenericMethodArgument::Type(v0.clone()),
-+ GenericMethodArgument::Const(v0) => GenericMethodArgument::Const(v0.clone()),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for GenericParam {
-+ fn clone(&self) -> Self {
-+ match self {
-+ GenericParam::Type(v0) => GenericParam::Type(v0.clone()),
-+ GenericParam::Lifetime(v0) => GenericParam::Lifetime(v0.clone()),
-+ GenericParam::Const(v0) => GenericParam::Const(v0.clone()),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Generics {
-+ fn clone(&self) -> Self {
-+ Generics {
-+ lt_token: self.lt_token.clone(),
-+ params: self.params.clone(),
-+ gt_token: self.gt_token.clone(),
-+ where_clause: self.where_clause.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ImplItem {
-+ fn clone(&self) -> Self {
-+ match self {
-+ ImplItem::Const(v0) => ImplItem::Const(v0.clone()),
-+ ImplItem::Method(v0) => ImplItem::Method(v0.clone()),
-+ ImplItem::Type(v0) => ImplItem::Type(v0.clone()),
-+ ImplItem::Macro(v0) => ImplItem::Macro(v0.clone()),
-+ ImplItem::Verbatim(v0) => ImplItem::Verbatim(v0.clone()),
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ImplItemConst {
-+ fn clone(&self) -> Self {
-+ ImplItemConst {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ defaultness: self.defaultness.clone(),
-+ const_token: self.const_token.clone(),
-+ ident: self.ident.clone(),
-+ colon_token: self.colon_token.clone(),
-+ ty: self.ty.clone(),
-+ eq_token: self.eq_token.clone(),
-+ expr: self.expr.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ImplItemMacro {
-+ fn clone(&self) -> Self {
-+ ImplItemMacro {
-+ attrs: self.attrs.clone(),
-+ mac: self.mac.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ImplItemMethod {
-+ fn clone(&self) -> Self {
-+ ImplItemMethod {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ defaultness: self.defaultness.clone(),
-+ sig: self.sig.clone(),
-+ block: self.block.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ImplItemType {
-+ fn clone(&self) -> Self {
-+ ImplItemType {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ defaultness: self.defaultness.clone(),
-+ type_token: self.type_token.clone(),
-+ ident: self.ident.clone(),
-+ generics: self.generics.clone(),
-+ eq_token: self.eq_token.clone(),
-+ ty: self.ty.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Index {
-+ fn clone(&self) -> Self {
-+ Index {
-+ index: self.index.clone(),
-+ span: self.span.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for Item {
-+ fn clone(&self) -> Self {
-+ match self {
-+ Item::Const(v0) => Item::Const(v0.clone()),
-+ Item::Enum(v0) => Item::Enum(v0.clone()),
-+ Item::ExternCrate(v0) => Item::ExternCrate(v0.clone()),
-+ Item::Fn(v0) => Item::Fn(v0.clone()),
-+ Item::ForeignMod(v0) => Item::ForeignMod(v0.clone()),
-+ Item::Impl(v0) => Item::Impl(v0.clone()),
-+ Item::Macro(v0) => Item::Macro(v0.clone()),
-+ Item::Macro2(v0) => Item::Macro2(v0.clone()),
-+ Item::Mod(v0) => Item::Mod(v0.clone()),
-+ Item::Static(v0) => Item::Static(v0.clone()),
-+ Item::Struct(v0) => Item::Struct(v0.clone()),
-+ Item::Trait(v0) => Item::Trait(v0.clone()),
-+ Item::TraitAlias(v0) => Item::TraitAlias(v0.clone()),
-+ Item::Type(v0) => Item::Type(v0.clone()),
-+ Item::Union(v0) => Item::Union(v0.clone()),
-+ Item::Use(v0) => Item::Use(v0.clone()),
-+ Item::Verbatim(v0) => Item::Verbatim(v0.clone()),
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemConst {
-+ fn clone(&self) -> Self {
-+ ItemConst {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ const_token: self.const_token.clone(),
-+ ident: self.ident.clone(),
-+ colon_token: self.colon_token.clone(),
-+ ty: self.ty.clone(),
-+ eq_token: self.eq_token.clone(),
-+ expr: self.expr.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemEnum {
-+ fn clone(&self) -> Self {
-+ ItemEnum {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ enum_token: self.enum_token.clone(),
-+ ident: self.ident.clone(),
-+ generics: self.generics.clone(),
-+ brace_token: self.brace_token.clone(),
-+ variants: self.variants.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemExternCrate {
-+ fn clone(&self) -> Self {
-+ ItemExternCrate {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ extern_token: self.extern_token.clone(),
-+ crate_token: self.crate_token.clone(),
-+ ident: self.ident.clone(),
-+ rename: self.rename.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemFn {
-+ fn clone(&self) -> Self {
-+ ItemFn {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ sig: self.sig.clone(),
-+ block: self.block.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemForeignMod {
-+ fn clone(&self) -> Self {
-+ ItemForeignMod {
-+ attrs: self.attrs.clone(),
-+ abi: self.abi.clone(),
-+ brace_token: self.brace_token.clone(),
-+ items: self.items.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemImpl {
-+ fn clone(&self) -> Self {
-+ ItemImpl {
-+ attrs: self.attrs.clone(),
-+ defaultness: self.defaultness.clone(),
-+ unsafety: self.unsafety.clone(),
-+ impl_token: self.impl_token.clone(),
-+ generics: self.generics.clone(),
-+ trait_: self.trait_.clone(),
-+ self_ty: self.self_ty.clone(),
-+ brace_token: self.brace_token.clone(),
-+ items: self.items.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemMacro {
-+ fn clone(&self) -> Self {
-+ ItemMacro {
-+ attrs: self.attrs.clone(),
-+ ident: self.ident.clone(),
-+ mac: self.mac.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemMacro2 {
-+ fn clone(&self) -> Self {
-+ ItemMacro2 {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ macro_token: self.macro_token.clone(),
-+ ident: self.ident.clone(),
-+ rules: self.rules.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemMod {
-+ fn clone(&self) -> Self {
-+ ItemMod {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ mod_token: self.mod_token.clone(),
-+ ident: self.ident.clone(),
-+ content: self.content.clone(),
-+ semi: self.semi.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemStatic {
-+ fn clone(&self) -> Self {
-+ ItemStatic {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ static_token: self.static_token.clone(),
-+ mutability: self.mutability.clone(),
-+ ident: self.ident.clone(),
-+ colon_token: self.colon_token.clone(),
-+ ty: self.ty.clone(),
-+ eq_token: self.eq_token.clone(),
-+ expr: self.expr.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemStruct {
-+ fn clone(&self) -> Self {
-+ ItemStruct {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ struct_token: self.struct_token.clone(),
-+ ident: self.ident.clone(),
-+ generics: self.generics.clone(),
-+ fields: self.fields.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemTrait {
-+ fn clone(&self) -> Self {
-+ ItemTrait {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ unsafety: self.unsafety.clone(),
-+ auto_token: self.auto_token.clone(),
-+ trait_token: self.trait_token.clone(),
-+ ident: self.ident.clone(),
-+ generics: self.generics.clone(),
-+ colon_token: self.colon_token.clone(),
-+ supertraits: self.supertraits.clone(),
-+ brace_token: self.brace_token.clone(),
-+ items: self.items.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemTraitAlias {
-+ fn clone(&self) -> Self {
-+ ItemTraitAlias {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ trait_token: self.trait_token.clone(),
-+ ident: self.ident.clone(),
-+ generics: self.generics.clone(),
-+ eq_token: self.eq_token.clone(),
-+ bounds: self.bounds.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemType {
-+ fn clone(&self) -> Self {
-+ ItemType {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ type_token: self.type_token.clone(),
-+ ident: self.ident.clone(),
-+ generics: self.generics.clone(),
-+ eq_token: self.eq_token.clone(),
-+ ty: self.ty.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemUnion {
-+ fn clone(&self) -> Self {
-+ ItemUnion {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ union_token: self.union_token.clone(),
-+ ident: self.ident.clone(),
-+ generics: self.generics.clone(),
-+ fields: self.fields.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for ItemUse {
-+ fn clone(&self) -> Self {
-+ ItemUse {
-+ attrs: self.attrs.clone(),
-+ vis: self.vis.clone(),
-+ use_token: self.use_token.clone(),
-+ leading_colon: self.leading_colon.clone(),
-+ tree: self.tree.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for Label {
-+ fn clone(&self) -> Self {
-+ Label {
-+ name: self.name.clone(),
-+ colon_token: self.colon_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for LifetimeDef {
-+ fn clone(&self) -> Self {
-+ LifetimeDef {
-+ attrs: self.attrs.clone(),
-+ lifetime: self.lifetime.clone(),
-+ colon_token: self.colon_token.clone(),
-+ bounds: self.bounds.clone(),
-+ }
-+ }
-+}
-+impl Clone for Lit {
-+ fn clone(&self) -> Self {
-+ match self {
-+ Lit::Str(v0) => Lit::Str(v0.clone()),
-+ Lit::ByteStr(v0) => Lit::ByteStr(v0.clone()),
-+ Lit::Byte(v0) => Lit::Byte(v0.clone()),
-+ Lit::Char(v0) => Lit::Char(v0.clone()),
-+ Lit::Int(v0) => Lit::Int(v0.clone()),
-+ Lit::Float(v0) => Lit::Float(v0.clone()),
-+ Lit::Bool(v0) => Lit::Bool(v0.clone()),
-+ Lit::Verbatim(v0) => Lit::Verbatim(v0.clone()),
-+ }
-+ }
-+}
-+impl Clone for LitBool {
-+ fn clone(&self) -> Self {
-+ LitBool {
-+ value: self.value.clone(),
-+ span: self.span.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for Local {
-+ fn clone(&self) -> Self {
-+ Local {
-+ attrs: self.attrs.clone(),
-+ let_token: self.let_token.clone(),
-+ pat: self.pat.clone(),
-+ init: self.init.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Macro {
-+ fn clone(&self) -> Self {
-+ Macro {
-+ path: self.path.clone(),
-+ bang_token: self.bang_token.clone(),
-+ delimiter: self.delimiter.clone(),
-+ tokens: self.tokens.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for MacroDelimiter {
-+ fn clone(&self) -> Self {
-+ match self {
-+ MacroDelimiter::Paren(v0) => MacroDelimiter::Paren(v0.clone()),
-+ MacroDelimiter::Brace(v0) => MacroDelimiter::Brace(v0.clone()),
-+ MacroDelimiter::Bracket(v0) => MacroDelimiter::Bracket(v0.clone()),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Member {
-+ fn clone(&self) -> Self {
-+ match self {
-+ Member::Named(v0) => Member::Named(v0.clone()),
-+ Member::Unnamed(v0) => Member::Unnamed(v0.clone()),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Meta {
-+ fn clone(&self) -> Self {
-+ match self {
-+ Meta::Path(v0) => Meta::Path(v0.clone()),
-+ Meta::List(v0) => Meta::List(v0.clone()),
-+ Meta::NameValue(v0) => Meta::NameValue(v0.clone()),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for MetaList {
-+ fn clone(&self) -> Self {
-+ MetaList {
-+ path: self.path.clone(),
-+ paren_token: self.paren_token.clone(),
-+ nested: self.nested.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for MetaNameValue {
-+ fn clone(&self) -> Self {
-+ MetaNameValue {
-+ path: self.path.clone(),
-+ eq_token: self.eq_token.clone(),
-+ lit: self.lit.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for MethodTurbofish {
-+ fn clone(&self) -> Self {
-+ MethodTurbofish {
-+ colon2_token: self.colon2_token.clone(),
-+ lt_token: self.lt_token.clone(),
-+ args: self.args.clone(),
-+ gt_token: self.gt_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for NestedMeta {
-+ fn clone(&self) -> Self {
-+ match self {
-+ NestedMeta::Meta(v0) => NestedMeta::Meta(v0.clone()),
-+ NestedMeta::Lit(v0) => NestedMeta::Lit(v0.clone()),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for ParenthesizedGenericArguments {
-+ fn clone(&self) -> Self {
-+ ParenthesizedGenericArguments {
-+ paren_token: self.paren_token.clone(),
-+ inputs: self.inputs.clone(),
-+ output: self.output.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for Pat {
-+ fn clone(&self) -> Self {
-+ match self {
-+ Pat::Box(v0) => Pat::Box(v0.clone()),
-+ Pat::Ident(v0) => Pat::Ident(v0.clone()),
-+ Pat::Lit(v0) => Pat::Lit(v0.clone()),
-+ Pat::Macro(v0) => Pat::Macro(v0.clone()),
-+ Pat::Or(v0) => Pat::Or(v0.clone()),
-+ Pat::Path(v0) => Pat::Path(v0.clone()),
-+ Pat::Range(v0) => Pat::Range(v0.clone()),
-+ Pat::Reference(v0) => Pat::Reference(v0.clone()),
-+ Pat::Rest(v0) => Pat::Rest(v0.clone()),
-+ Pat::Slice(v0) => Pat::Slice(v0.clone()),
-+ Pat::Struct(v0) => Pat::Struct(v0.clone()),
-+ Pat::Tuple(v0) => Pat::Tuple(v0.clone()),
-+ Pat::TupleStruct(v0) => Pat::TupleStruct(v0.clone()),
-+ Pat::Type(v0) => Pat::Type(v0.clone()),
-+ Pat::Verbatim(v0) => Pat::Verbatim(v0.clone()),
-+ Pat::Wild(v0) => Pat::Wild(v0.clone()),
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatBox {
-+ fn clone(&self) -> Self {
-+ PatBox {
-+ attrs: self.attrs.clone(),
-+ box_token: self.box_token.clone(),
-+ pat: self.pat.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatIdent {
-+ fn clone(&self) -> Self {
-+ PatIdent {
-+ attrs: self.attrs.clone(),
-+ by_ref: self.by_ref.clone(),
-+ mutability: self.mutability.clone(),
-+ ident: self.ident.clone(),
-+ subpat: self.subpat.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatLit {
-+ fn clone(&self) -> Self {
-+ PatLit {
-+ attrs: self.attrs.clone(),
-+ expr: self.expr.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatMacro {
-+ fn clone(&self) -> Self {
-+ PatMacro {
-+ attrs: self.attrs.clone(),
-+ mac: self.mac.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatOr {
-+ fn clone(&self) -> Self {
-+ PatOr {
-+ attrs: self.attrs.clone(),
-+ leading_vert: self.leading_vert.clone(),
-+ cases: self.cases.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatPath {
-+ fn clone(&self) -> Self {
-+ PatPath {
-+ attrs: self.attrs.clone(),
-+ qself: self.qself.clone(),
-+ path: self.path.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatRange {
-+ fn clone(&self) -> Self {
-+ PatRange {
-+ attrs: self.attrs.clone(),
-+ lo: self.lo.clone(),
-+ limits: self.limits.clone(),
-+ hi: self.hi.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatReference {
-+ fn clone(&self) -> Self {
-+ PatReference {
-+ attrs: self.attrs.clone(),
-+ and_token: self.and_token.clone(),
-+ mutability: self.mutability.clone(),
-+ pat: self.pat.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatRest {
-+ fn clone(&self) -> Self {
-+ PatRest {
-+ attrs: self.attrs.clone(),
-+ dot2_token: self.dot2_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatSlice {
-+ fn clone(&self) -> Self {
-+ PatSlice {
-+ attrs: self.attrs.clone(),
-+ bracket_token: self.bracket_token.clone(),
-+ elems: self.elems.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatStruct {
-+ fn clone(&self) -> Self {
-+ PatStruct {
-+ attrs: self.attrs.clone(),
-+ path: self.path.clone(),
-+ brace_token: self.brace_token.clone(),
-+ fields: self.fields.clone(),
-+ dot2_token: self.dot2_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatTuple {
-+ fn clone(&self) -> Self {
-+ PatTuple {
-+ attrs: self.attrs.clone(),
-+ paren_token: self.paren_token.clone(),
-+ elems: self.elems.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatTupleStruct {
-+ fn clone(&self) -> Self {
-+ PatTupleStruct {
-+ attrs: self.attrs.clone(),
-+ path: self.path.clone(),
-+ pat: self.pat.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatType {
-+ fn clone(&self) -> Self {
-+ PatType {
-+ attrs: self.attrs.clone(),
-+ pat: self.pat.clone(),
-+ colon_token: self.colon_token.clone(),
-+ ty: self.ty.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for PatWild {
-+ fn clone(&self) -> Self {
-+ PatWild {
-+ attrs: self.attrs.clone(),
-+ underscore_token: self.underscore_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Path {
-+ fn clone(&self) -> Self {
-+ Path {
-+ leading_colon: self.leading_colon.clone(),
-+ segments: self.segments.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for PathArguments {
-+ fn clone(&self) -> Self {
-+ match self {
-+ PathArguments::None => PathArguments::None,
-+ PathArguments::AngleBracketed(v0) => PathArguments::AngleBracketed(v0.clone()),
-+ PathArguments::Parenthesized(v0) => PathArguments::Parenthesized(v0.clone()),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for PathSegment {
-+ fn clone(&self) -> Self {
-+ PathSegment {
-+ ident: self.ident.clone(),
-+ arguments: self.arguments.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for PredicateEq {
-+ fn clone(&self) -> Self {
-+ PredicateEq {
-+ lhs_ty: self.lhs_ty.clone(),
-+ eq_token: self.eq_token.clone(),
-+ rhs_ty: self.rhs_ty.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for PredicateLifetime {
-+ fn clone(&self) -> Self {
-+ PredicateLifetime {
-+ lifetime: self.lifetime.clone(),
-+ colon_token: self.colon_token.clone(),
-+ bounds: self.bounds.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for PredicateType {
-+ fn clone(&self) -> Self {
-+ PredicateType {
-+ lifetimes: self.lifetimes.clone(),
-+ bounded_ty: self.bounded_ty.clone(),
-+ colon_token: self.colon_token.clone(),
-+ bounds: self.bounds.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for QSelf {
-+ fn clone(&self) -> Self {
-+ QSelf {
-+ lt_token: self.lt_token.clone(),
-+ ty: self.ty.clone(),
-+ position: self.position.clone(),
-+ as_token: self.as_token.clone(),
-+ gt_token: self.gt_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Copy for RangeLimits {}
-+#[cfg(feature = "full")]
-+impl Clone for RangeLimits {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for Receiver {
-+ fn clone(&self) -> Self {
-+ Receiver {
-+ attrs: self.attrs.clone(),
-+ reference: self.reference.clone(),
-+ mutability: self.mutability.clone(),
-+ self_token: self.self_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for ReturnType {
-+ fn clone(&self) -> Self {
-+ match self {
-+ ReturnType::Default => ReturnType::Default,
-+ ReturnType::Type(v0, v1) => ReturnType::Type(v0.clone(), v1.clone()),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for Signature {
-+ fn clone(&self) -> Self {
-+ Signature {
-+ constness: self.constness.clone(),
-+ asyncness: self.asyncness.clone(),
-+ unsafety: self.unsafety.clone(),
-+ abi: self.abi.clone(),
-+ fn_token: self.fn_token.clone(),
-+ ident: self.ident.clone(),
-+ generics: self.generics.clone(),
-+ paren_token: self.paren_token.clone(),
-+ inputs: self.inputs.clone(),
-+ variadic: self.variadic.clone(),
-+ output: self.output.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for Stmt {
-+ fn clone(&self) -> Self {
-+ match self {
-+ Stmt::Local(v0) => Stmt::Local(v0.clone()),
-+ Stmt::Item(v0) => Stmt::Item(v0.clone()),
-+ Stmt::Expr(v0) => Stmt::Expr(v0.clone()),
-+ Stmt::Semi(v0, v1) => Stmt::Semi(v0.clone(), v1.clone()),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TraitBound {
-+ fn clone(&self) -> Self {
-+ TraitBound {
-+ paren_token: self.paren_token.clone(),
-+ modifier: self.modifier.clone(),
-+ lifetimes: self.lifetimes.clone(),
-+ path: self.path.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Copy for TraitBoundModifier {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TraitBoundModifier {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for TraitItem {
-+ fn clone(&self) -> Self {
-+ match self {
-+ TraitItem::Const(v0) => TraitItem::Const(v0.clone()),
-+ TraitItem::Method(v0) => TraitItem::Method(v0.clone()),
-+ TraitItem::Type(v0) => TraitItem::Type(v0.clone()),
-+ TraitItem::Macro(v0) => TraitItem::Macro(v0.clone()),
-+ TraitItem::Verbatim(v0) => TraitItem::Verbatim(v0.clone()),
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for TraitItemConst {
-+ fn clone(&self) -> Self {
-+ TraitItemConst {
-+ attrs: self.attrs.clone(),
-+ const_token: self.const_token.clone(),
-+ ident: self.ident.clone(),
-+ colon_token: self.colon_token.clone(),
-+ ty: self.ty.clone(),
-+ default: self.default.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for TraitItemMacro {
-+ fn clone(&self) -> Self {
-+ TraitItemMacro {
-+ attrs: self.attrs.clone(),
-+ mac: self.mac.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for TraitItemMethod {
-+ fn clone(&self) -> Self {
-+ TraitItemMethod {
-+ attrs: self.attrs.clone(),
-+ sig: self.sig.clone(),
-+ default: self.default.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for TraitItemType {
-+ fn clone(&self) -> Self {
-+ TraitItemType {
-+ attrs: self.attrs.clone(),
-+ type_token: self.type_token.clone(),
-+ ident: self.ident.clone(),
-+ generics: self.generics.clone(),
-+ colon_token: self.colon_token.clone(),
-+ bounds: self.bounds.clone(),
-+ default: self.default.clone(),
-+ semi_token: self.semi_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Type {
-+ fn clone(&self) -> Self {
-+ match self {
-+ Type::Array(v0) => Type::Array(v0.clone()),
-+ Type::BareFn(v0) => Type::BareFn(v0.clone()),
-+ Type::Group(v0) => Type::Group(v0.clone()),
-+ Type::ImplTrait(v0) => Type::ImplTrait(v0.clone()),
-+ Type::Infer(v0) => Type::Infer(v0.clone()),
-+ Type::Macro(v0) => Type::Macro(v0.clone()),
-+ Type::Never(v0) => Type::Never(v0.clone()),
-+ Type::Paren(v0) => Type::Paren(v0.clone()),
-+ Type::Path(v0) => Type::Path(v0.clone()),
-+ Type::Ptr(v0) => Type::Ptr(v0.clone()),
-+ Type::Reference(v0) => Type::Reference(v0.clone()),
-+ Type::Slice(v0) => Type::Slice(v0.clone()),
-+ Type::TraitObject(v0) => Type::TraitObject(v0.clone()),
-+ Type::Tuple(v0) => Type::Tuple(v0.clone()),
-+ Type::Verbatim(v0) => Type::Verbatim(v0.clone()),
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeArray {
-+ fn clone(&self) -> Self {
-+ TypeArray {
-+ bracket_token: self.bracket_token.clone(),
-+ elem: self.elem.clone(),
-+ semi_token: self.semi_token.clone(),
-+ len: self.len.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeBareFn {
-+ fn clone(&self) -> Self {
-+ TypeBareFn {
-+ lifetimes: self.lifetimes.clone(),
-+ unsafety: self.unsafety.clone(),
-+ abi: self.abi.clone(),
-+ fn_token: self.fn_token.clone(),
-+ paren_token: self.paren_token.clone(),
-+ inputs: self.inputs.clone(),
-+ variadic: self.variadic.clone(),
-+ output: self.output.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeGroup {
-+ fn clone(&self) -> Self {
-+ TypeGroup {
-+ group_token: self.group_token.clone(),
-+ elem: self.elem.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeImplTrait {
-+ fn clone(&self) -> Self {
-+ TypeImplTrait {
-+ impl_token: self.impl_token.clone(),
-+ bounds: self.bounds.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeInfer {
-+ fn clone(&self) -> Self {
-+ TypeInfer {
-+ underscore_token: self.underscore_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeMacro {
-+ fn clone(&self) -> Self {
-+ TypeMacro {
-+ mac: self.mac.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeNever {
-+ fn clone(&self) -> Self {
-+ TypeNever {
-+ bang_token: self.bang_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeParam {
-+ fn clone(&self) -> Self {
-+ TypeParam {
-+ attrs: self.attrs.clone(),
-+ ident: self.ident.clone(),
-+ colon_token: self.colon_token.clone(),
-+ bounds: self.bounds.clone(),
-+ eq_token: self.eq_token.clone(),
-+ default: self.default.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeParamBound {
-+ fn clone(&self) -> Self {
-+ match self {
-+ TypeParamBound::Trait(v0) => TypeParamBound::Trait(v0.clone()),
-+ TypeParamBound::Lifetime(v0) => TypeParamBound::Lifetime(v0.clone()),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeParen {
-+ fn clone(&self) -> Self {
-+ TypeParen {
-+ paren_token: self.paren_token.clone(),
-+ elem: self.elem.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypePath {
-+ fn clone(&self) -> Self {
-+ TypePath {
-+ qself: self.qself.clone(),
-+ path: self.path.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypePtr {
-+ fn clone(&self) -> Self {
-+ TypePtr {
-+ star_token: self.star_token.clone(),
-+ const_token: self.const_token.clone(),
-+ mutability: self.mutability.clone(),
-+ elem: self.elem.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeReference {
-+ fn clone(&self) -> Self {
-+ TypeReference {
-+ and_token: self.and_token.clone(),
-+ lifetime: self.lifetime.clone(),
-+ mutability: self.mutability.clone(),
-+ elem: self.elem.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeSlice {
-+ fn clone(&self) -> Self {
-+ TypeSlice {
-+ bracket_token: self.bracket_token.clone(),
-+ elem: self.elem.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeTraitObject {
-+ fn clone(&self) -> Self {
-+ TypeTraitObject {
-+ dyn_token: self.dyn_token.clone(),
-+ bounds: self.bounds.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for TypeTuple {
-+ fn clone(&self) -> Self {
-+ TypeTuple {
-+ paren_token: self.paren_token.clone(),
-+ elems: self.elems.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Copy for UnOp {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for UnOp {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for UseGlob {
-+ fn clone(&self) -> Self {
-+ UseGlob {
-+ star_token: self.star_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for UseGroup {
-+ fn clone(&self) -> Self {
-+ UseGroup {
-+ brace_token: self.brace_token.clone(),
-+ items: self.items.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for UseName {
-+ fn clone(&self) -> Self {
-+ UseName {
-+ ident: self.ident.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for UsePath {
-+ fn clone(&self) -> Self {
-+ UsePath {
-+ ident: self.ident.clone(),
-+ colon2_token: self.colon2_token.clone(),
-+ tree: self.tree.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for UseRename {
-+ fn clone(&self) -> Self {
-+ UseRename {
-+ ident: self.ident.clone(),
-+ as_token: self.as_token.clone(),
-+ rename: self.rename.clone(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Clone for UseTree {
-+ fn clone(&self) -> Self {
-+ match self {
-+ UseTree::Path(v0) => UseTree::Path(v0.clone()),
-+ UseTree::Name(v0) => UseTree::Name(v0.clone()),
-+ UseTree::Rename(v0) => UseTree::Rename(v0.clone()),
-+ UseTree::Glob(v0) => UseTree::Glob(v0.clone()),
-+ UseTree::Group(v0) => UseTree::Group(v0.clone()),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Variadic {
-+ fn clone(&self) -> Self {
-+ Variadic {
-+ attrs: self.attrs.clone(),
-+ dots: self.dots.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Variant {
-+ fn clone(&self) -> Self {
-+ Variant {
-+ attrs: self.attrs.clone(),
-+ ident: self.ident.clone(),
-+ fields: self.fields.clone(),
-+ discriminant: self.discriminant.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for VisCrate {
-+ fn clone(&self) -> Self {
-+ VisCrate {
-+ crate_token: self.crate_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for VisPublic {
-+ fn clone(&self) -> Self {
-+ VisPublic {
-+ pub_token: self.pub_token.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for VisRestricted {
-+ fn clone(&self) -> Self {
-+ VisRestricted {
-+ pub_token: self.pub_token.clone(),
-+ paren_token: self.paren_token.clone(),
-+ in_token: self.in_token.clone(),
-+ path: self.path.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for Visibility {
-+ fn clone(&self) -> Self {
-+ match self {
-+ Visibility::Public(v0) => Visibility::Public(v0.clone()),
-+ Visibility::Crate(v0) => Visibility::Crate(v0.clone()),
-+ Visibility::Restricted(v0) => Visibility::Restricted(v0.clone()),
-+ Visibility::Inherited => Visibility::Inherited,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for WhereClause {
-+ fn clone(&self) -> Self {
-+ WhereClause {
-+ where_token: self.where_token.clone(),
-+ predicates: self.predicates.clone(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Clone for WherePredicate {
-+ fn clone(&self) -> Self {
-+ match self {
-+ WherePredicate::Type(v0) => WherePredicate::Type(v0.clone()),
-+ WherePredicate::Lifetime(v0) => WherePredicate::Lifetime(v0.clone()),
-+ WherePredicate::Eq(v0) => WherePredicate::Eq(v0.clone()),
-+ }
-+ }
-+}
-diff --git a/third_party/rust/syn/src/gen/debug.rs b/third_party/rust/syn/src/gen/debug.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/src/gen/debug.rs
-@@ -0,0 +1,2857 @@
-+// This file is @generated by syn-internal-codegen.
-+// It is not intended for manual editing.
-+
-+use crate::*;
-+use std::fmt::{self, Debug};
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Abi {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Abi");
-+ formatter.field("extern_token", &self.extern_token);
-+ formatter.field("name", &self.name);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for AngleBracketedGenericArguments {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("AngleBracketedGenericArguments");
-+ formatter.field("colon2_token", &self.colon2_token);
-+ formatter.field("lt_token", &self.lt_token);
-+ formatter.field("args", &self.args);
-+ formatter.field("gt_token", &self.gt_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for Arm {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Arm");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("pat", &self.pat);
-+ formatter.field("guard", &self.guard);
-+ formatter.field("fat_arrow_token", &self.fat_arrow_token);
-+ formatter.field("body", &self.body);
-+ formatter.field("comma", &self.comma);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for AttrStyle {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ AttrStyle::Outer => formatter.write_str("Outer"),
-+ AttrStyle::Inner(v0) => {
-+ let mut formatter = formatter.debug_tuple("Inner");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Attribute {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Attribute");
-+ formatter.field("pound_token", &self.pound_token);
-+ formatter.field("style", &self.style);
-+ formatter.field("bracket_token", &self.bracket_token);
-+ formatter.field("path", &self.path);
-+ formatter.field("tokens", &self.tokens);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for BareFnArg {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("BareFnArg");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("name", &self.name);
-+ formatter.field("ty", &self.ty);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for BinOp {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ BinOp::Add(v0) => {
-+ let mut formatter = formatter.debug_tuple("Add");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Sub(v0) => {
-+ let mut formatter = formatter.debug_tuple("Sub");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Mul(v0) => {
-+ let mut formatter = formatter.debug_tuple("Mul");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Div(v0) => {
-+ let mut formatter = formatter.debug_tuple("Div");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Rem(v0) => {
-+ let mut formatter = formatter.debug_tuple("Rem");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::And(v0) => {
-+ let mut formatter = formatter.debug_tuple("And");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Or(v0) => {
-+ let mut formatter = formatter.debug_tuple("Or");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::BitXor(v0) => {
-+ let mut formatter = formatter.debug_tuple("BitXor");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::BitAnd(v0) => {
-+ let mut formatter = formatter.debug_tuple("BitAnd");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::BitOr(v0) => {
-+ let mut formatter = formatter.debug_tuple("BitOr");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Shl(v0) => {
-+ let mut formatter = formatter.debug_tuple("Shl");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Shr(v0) => {
-+ let mut formatter = formatter.debug_tuple("Shr");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Eq(v0) => {
-+ let mut formatter = formatter.debug_tuple("Eq");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Lt(v0) => {
-+ let mut formatter = formatter.debug_tuple("Lt");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Le(v0) => {
-+ let mut formatter = formatter.debug_tuple("Le");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Ne(v0) => {
-+ let mut formatter = formatter.debug_tuple("Ne");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Ge(v0) => {
-+ let mut formatter = formatter.debug_tuple("Ge");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::Gt(v0) => {
-+ let mut formatter = formatter.debug_tuple("Gt");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::AddEq(v0) => {
-+ let mut formatter = formatter.debug_tuple("AddEq");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::SubEq(v0) => {
-+ let mut formatter = formatter.debug_tuple("SubEq");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::MulEq(v0) => {
-+ let mut formatter = formatter.debug_tuple("MulEq");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::DivEq(v0) => {
-+ let mut formatter = formatter.debug_tuple("DivEq");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::RemEq(v0) => {
-+ let mut formatter = formatter.debug_tuple("RemEq");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::BitXorEq(v0) => {
-+ let mut formatter = formatter.debug_tuple("BitXorEq");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::BitAndEq(v0) => {
-+ let mut formatter = formatter.debug_tuple("BitAndEq");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::BitOrEq(v0) => {
-+ let mut formatter = formatter.debug_tuple("BitOrEq");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::ShlEq(v0) => {
-+ let mut formatter = formatter.debug_tuple("ShlEq");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ BinOp::ShrEq(v0) => {
-+ let mut formatter = formatter.debug_tuple("ShrEq");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Binding {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Binding");
-+ formatter.field("ident", &self.ident);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for Block {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Block");
-+ formatter.field("brace_token", &self.brace_token);
-+ formatter.field("stmts", &self.stmts);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for BoundLifetimes {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("BoundLifetimes");
-+ formatter.field("for_token", &self.for_token);
-+ formatter.field("lt_token", &self.lt_token);
-+ formatter.field("lifetimes", &self.lifetimes);
-+ formatter.field("gt_token", &self.gt_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for ConstParam {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ConstParam");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("const_token", &self.const_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("default", &self.default);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Constraint {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Constraint");
-+ formatter.field("ident", &self.ident);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("bounds", &self.bounds);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Debug for Data {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ Data::Struct(v0) => {
-+ let mut formatter = formatter.debug_tuple("Struct");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Data::Enum(v0) => {
-+ let mut formatter = formatter.debug_tuple("Enum");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Data::Union(v0) => {
-+ let mut formatter = formatter.debug_tuple("Union");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Debug for DataEnum {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("DataEnum");
-+ formatter.field("enum_token", &self.enum_token);
-+ formatter.field("brace_token", &self.brace_token);
-+ formatter.field("variants", &self.variants);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Debug for DataStruct {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("DataStruct");
-+ formatter.field("struct_token", &self.struct_token);
-+ formatter.field("fields", &self.fields);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Debug for DataUnion {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("DataUnion");
-+ formatter.field("union_token", &self.union_token);
-+ formatter.field("fields", &self.fields);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Debug for DeriveInput {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("DeriveInput");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("generics", &self.generics);
-+ formatter.field("data", &self.data);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Expr {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ #[cfg(feature = "full")]
-+ Expr::Array(v0) => {
-+ let mut formatter = formatter.debug_tuple("Array");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Assign(v0) => {
-+ let mut formatter = formatter.debug_tuple("Assign");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::AssignOp(v0) => {
-+ let mut formatter = formatter.debug_tuple("AssignOp");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Async(v0) => {
-+ let mut formatter = formatter.debug_tuple("Async");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Await(v0) => {
-+ let mut formatter = formatter.debug_tuple("Await");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Expr::Binary(v0) => {
-+ let mut formatter = formatter.debug_tuple("Binary");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Block(v0) => {
-+ let mut formatter = formatter.debug_tuple("Block");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Box(v0) => {
-+ let mut formatter = formatter.debug_tuple("Box");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Break(v0) => {
-+ let mut formatter = formatter.debug_tuple("Break");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Expr::Call(v0) => {
-+ let mut formatter = formatter.debug_tuple("Call");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Expr::Cast(v0) => {
-+ let mut formatter = formatter.debug_tuple("Cast");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Closure(v0) => {
-+ let mut formatter = formatter.debug_tuple("Closure");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Continue(v0) => {
-+ let mut formatter = formatter.debug_tuple("Continue");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Expr::Field(v0) => {
-+ let mut formatter = formatter.debug_tuple("Field");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::ForLoop(v0) => {
-+ let mut formatter = formatter.debug_tuple("ForLoop");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Group(v0) => {
-+ let mut formatter = formatter.debug_tuple("Group");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::If(v0) => {
-+ let mut formatter = formatter.debug_tuple("If");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Expr::Index(v0) => {
-+ let mut formatter = formatter.debug_tuple("Index");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Let(v0) => {
-+ let mut formatter = formatter.debug_tuple("Let");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Expr::Lit(v0) => {
-+ let mut formatter = formatter.debug_tuple("Lit");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Loop(v0) => {
-+ let mut formatter = formatter.debug_tuple("Loop");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Macro(v0) => {
-+ let mut formatter = formatter.debug_tuple("Macro");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Match(v0) => {
-+ let mut formatter = formatter.debug_tuple("Match");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::MethodCall(v0) => {
-+ let mut formatter = formatter.debug_tuple("MethodCall");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Expr::Paren(v0) => {
-+ let mut formatter = formatter.debug_tuple("Paren");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Expr::Path(v0) => {
-+ let mut formatter = formatter.debug_tuple("Path");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Range(v0) => {
-+ let mut formatter = formatter.debug_tuple("Range");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Reference(v0) => {
-+ let mut formatter = formatter.debug_tuple("Reference");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Repeat(v0) => {
-+ let mut formatter = formatter.debug_tuple("Repeat");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Return(v0) => {
-+ let mut formatter = formatter.debug_tuple("Return");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Struct(v0) => {
-+ let mut formatter = formatter.debug_tuple("Struct");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Try(v0) => {
-+ let mut formatter = formatter.debug_tuple("Try");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::TryBlock(v0) => {
-+ let mut formatter = formatter.debug_tuple("TryBlock");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Tuple(v0) => {
-+ let mut formatter = formatter.debug_tuple("Tuple");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Type(v0) => {
-+ let mut formatter = formatter.debug_tuple("Type");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Expr::Unary(v0) => {
-+ let mut formatter = formatter.debug_tuple("Unary");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Unsafe(v0) => {
-+ let mut formatter = formatter.debug_tuple("Unsafe");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Expr::Verbatim(v0) => {
-+ let mut formatter = formatter.debug_tuple("Verbatim");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::While(v0) => {
-+ let mut formatter = formatter.debug_tuple("While");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Yield(v0) => {
-+ let mut formatter = formatter.debug_tuple("Yield");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprArray {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprArray");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("bracket_token", &self.bracket_token);
-+ formatter.field("elems", &self.elems);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprAssign {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprAssign");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("left", &self.left);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("right", &self.right);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprAssignOp {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprAssignOp");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("left", &self.left);
-+ formatter.field("op", &self.op);
-+ formatter.field("right", &self.right);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprAsync {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprAsync");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("async_token", &self.async_token);
-+ formatter.field("capture", &self.capture);
-+ formatter.field("block", &self.block);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprAwait {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprAwait");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("base", &self.base);
-+ formatter.field("dot_token", &self.dot_token);
-+ formatter.field("await_token", &self.await_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for ExprBinary {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprBinary");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("left", &self.left);
-+ formatter.field("op", &self.op);
-+ formatter.field("right", &self.right);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprBlock {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprBlock");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("label", &self.label);
-+ formatter.field("block", &self.block);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprBox {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprBox");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("box_token", &self.box_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprBreak {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprBreak");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("break_token", &self.break_token);
-+ formatter.field("label", &self.label);
-+ formatter.field("expr", &self.expr);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for ExprCall {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprCall");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("func", &self.func);
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("args", &self.args);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for ExprCast {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprCast");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("expr", &self.expr);
-+ formatter.field("as_token", &self.as_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprClosure {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprClosure");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("asyncness", &self.asyncness);
-+ formatter.field("movability", &self.movability);
-+ formatter.field("capture", &self.capture);
-+ formatter.field("or1_token", &self.or1_token);
-+ formatter.field("inputs", &self.inputs);
-+ formatter.field("or2_token", &self.or2_token);
-+ formatter.field("output", &self.output);
-+ formatter.field("body", &self.body);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprContinue {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprContinue");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("continue_token", &self.continue_token);
-+ formatter.field("label", &self.label);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for ExprField {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprField");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("base", &self.base);
-+ formatter.field("dot_token", &self.dot_token);
-+ formatter.field("member", &self.member);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprForLoop {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprForLoop");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("label", &self.label);
-+ formatter.field("for_token", &self.for_token);
-+ formatter.field("pat", &self.pat);
-+ formatter.field("in_token", &self.in_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.field("body", &self.body);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprGroup {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprGroup");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("group_token", &self.group_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprIf {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprIf");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("if_token", &self.if_token);
-+ formatter.field("cond", &self.cond);
-+ formatter.field("then_branch", &self.then_branch);
-+ formatter.field("else_branch", &self.else_branch);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for ExprIndex {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprIndex");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("expr", &self.expr);
-+ formatter.field("bracket_token", &self.bracket_token);
-+ formatter.field("index", &self.index);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprLet {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprLet");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("let_token", &self.let_token);
-+ formatter.field("pat", &self.pat);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for ExprLit {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprLit");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("lit", &self.lit);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprLoop {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprLoop");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("label", &self.label);
-+ formatter.field("loop_token", &self.loop_token);
-+ formatter.field("body", &self.body);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprMacro {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprMacro");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("mac", &self.mac);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprMatch {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprMatch");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("match_token", &self.match_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.field("brace_token", &self.brace_token);
-+ formatter.field("arms", &self.arms);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprMethodCall {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprMethodCall");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("receiver", &self.receiver);
-+ formatter.field("dot_token", &self.dot_token);
-+ formatter.field("method", &self.method);
-+ formatter.field("turbofish", &self.turbofish);
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("args", &self.args);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for ExprParen {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprParen");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for ExprPath {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprPath");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("qself", &self.qself);
-+ formatter.field("path", &self.path);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprRange {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprRange");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("from", &self.from);
-+ formatter.field("limits", &self.limits);
-+ formatter.field("to", &self.to);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprReference {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprReference");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("and_token", &self.and_token);
-+ formatter.field("raw", &self.raw);
-+ formatter.field("mutability", &self.mutability);
-+ formatter.field("expr", &self.expr);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprRepeat {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprRepeat");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("bracket_token", &self.bracket_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.field("len", &self.len);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprReturn {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprReturn");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("return_token", &self.return_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprStruct {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprStruct");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("path", &self.path);
-+ formatter.field("brace_token", &self.brace_token);
-+ formatter.field("fields", &self.fields);
-+ formatter.field("dot2_token", &self.dot2_token);
-+ formatter.field("rest", &self.rest);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprTry {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprTry");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("expr", &self.expr);
-+ formatter.field("question_token", &self.question_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprTryBlock {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprTryBlock");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("try_token", &self.try_token);
-+ formatter.field("block", &self.block);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprTuple {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprTuple");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("elems", &self.elems);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprType {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprType");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("expr", &self.expr);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for ExprUnary {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprUnary");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("op", &self.op);
-+ formatter.field("expr", &self.expr);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprUnsafe {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprUnsafe");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("unsafe_token", &self.unsafe_token);
-+ formatter.field("block", &self.block);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprWhile {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprWhile");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("label", &self.label);
-+ formatter.field("while_token", &self.while_token);
-+ formatter.field("cond", &self.cond);
-+ formatter.field("body", &self.body);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ExprYield {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ExprYield");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("yield_token", &self.yield_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Field {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Field");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for FieldPat {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("FieldPat");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("member", &self.member);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("pat", &self.pat);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for FieldValue {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("FieldValue");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("member", &self.member);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Fields {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ Fields::Named(v0) => {
-+ let mut formatter = formatter.debug_tuple("Named");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Fields::Unnamed(v0) => {
-+ let mut formatter = formatter.debug_tuple("Unnamed");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Fields::Unit => formatter.write_str("Unit"),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for FieldsNamed {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("FieldsNamed");
-+ formatter.field("brace_token", &self.brace_token);
-+ formatter.field("named", &self.named);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for FieldsUnnamed {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("FieldsUnnamed");
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("unnamed", &self.unnamed);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for File {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("File");
-+ formatter.field("shebang", &self.shebang);
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("items", &self.items);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for FnArg {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ FnArg::Receiver(v0) => {
-+ let mut formatter = formatter.debug_tuple("Receiver");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ FnArg::Typed(v0) => {
-+ let mut formatter = formatter.debug_tuple("Typed");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ForeignItem {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ ForeignItem::Fn(v0) => {
-+ let mut formatter = formatter.debug_tuple("Fn");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ ForeignItem::Static(v0) => {
-+ let mut formatter = formatter.debug_tuple("Static");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ ForeignItem::Type(v0) => {
-+ let mut formatter = formatter.debug_tuple("Type");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ ForeignItem::Macro(v0) => {
-+ let mut formatter = formatter.debug_tuple("Macro");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ ForeignItem::Verbatim(v0) => {
-+ let mut formatter = formatter.debug_tuple("Verbatim");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ForeignItemFn {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ForeignItemFn");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("sig", &self.sig);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ForeignItemMacro {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ForeignItemMacro");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("mac", &self.mac);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ForeignItemStatic {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ForeignItemStatic");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("static_token", &self.static_token);
-+ formatter.field("mutability", &self.mutability);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ForeignItemType {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ForeignItemType");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("type_token", &self.type_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for GenericArgument {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ GenericArgument::Lifetime(v0) => {
-+ let mut formatter = formatter.debug_tuple("Lifetime");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ GenericArgument::Type(v0) => {
-+ let mut formatter = formatter.debug_tuple("Type");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ GenericArgument::Binding(v0) => {
-+ let mut formatter = formatter.debug_tuple("Binding");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ GenericArgument::Constraint(v0) => {
-+ let mut formatter = formatter.debug_tuple("Constraint");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ GenericArgument::Const(v0) => {
-+ let mut formatter = formatter.debug_tuple("Const");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for GenericMethodArgument {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ GenericMethodArgument::Type(v0) => {
-+ let mut formatter = formatter.debug_tuple("Type");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ GenericMethodArgument::Const(v0) => {
-+ let mut formatter = formatter.debug_tuple("Const");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for GenericParam {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ GenericParam::Type(v0) => {
-+ let mut formatter = formatter.debug_tuple("Type");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ GenericParam::Lifetime(v0) => {
-+ let mut formatter = formatter.debug_tuple("Lifetime");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ GenericParam::Const(v0) => {
-+ let mut formatter = formatter.debug_tuple("Const");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Generics {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Generics");
-+ formatter.field("lt_token", &self.lt_token);
-+ formatter.field("params", &self.params);
-+ formatter.field("gt_token", &self.gt_token);
-+ formatter.field("where_clause", &self.where_clause);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ImplItem {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ ImplItem::Const(v0) => {
-+ let mut formatter = formatter.debug_tuple("Const");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ ImplItem::Method(v0) => {
-+ let mut formatter = formatter.debug_tuple("Method");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ ImplItem::Type(v0) => {
-+ let mut formatter = formatter.debug_tuple("Type");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ ImplItem::Macro(v0) => {
-+ let mut formatter = formatter.debug_tuple("Macro");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ ImplItem::Verbatim(v0) => {
-+ let mut formatter = formatter.debug_tuple("Verbatim");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ImplItemConst {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ImplItemConst");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("defaultness", &self.defaultness);
-+ formatter.field("const_token", &self.const_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ImplItemMacro {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ImplItemMacro");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("mac", &self.mac);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ImplItemMethod {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ImplItemMethod");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("defaultness", &self.defaultness);
-+ formatter.field("sig", &self.sig);
-+ formatter.field("block", &self.block);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ImplItemType {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ImplItemType");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("defaultness", &self.defaultness);
-+ formatter.field("type_token", &self.type_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("generics", &self.generics);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Index {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Index");
-+ formatter.field("index", &self.index);
-+ formatter.field("span", &self.span);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for Item {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ Item::Const(v0) => {
-+ let mut formatter = formatter.debug_tuple("Const");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Enum(v0) => {
-+ let mut formatter = formatter.debug_tuple("Enum");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::ExternCrate(v0) => {
-+ let mut formatter = formatter.debug_tuple("ExternCrate");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Fn(v0) => {
-+ let mut formatter = formatter.debug_tuple("Fn");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::ForeignMod(v0) => {
-+ let mut formatter = formatter.debug_tuple("ForeignMod");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Impl(v0) => {
-+ let mut formatter = formatter.debug_tuple("Impl");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Macro(v0) => {
-+ let mut formatter = formatter.debug_tuple("Macro");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Macro2(v0) => {
-+ let mut formatter = formatter.debug_tuple("Macro2");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Mod(v0) => {
-+ let mut formatter = formatter.debug_tuple("Mod");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Static(v0) => {
-+ let mut formatter = formatter.debug_tuple("Static");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Struct(v0) => {
-+ let mut formatter = formatter.debug_tuple("Struct");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Trait(v0) => {
-+ let mut formatter = formatter.debug_tuple("Trait");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::TraitAlias(v0) => {
-+ let mut formatter = formatter.debug_tuple("TraitAlias");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Type(v0) => {
-+ let mut formatter = formatter.debug_tuple("Type");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Union(v0) => {
-+ let mut formatter = formatter.debug_tuple("Union");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Use(v0) => {
-+ let mut formatter = formatter.debug_tuple("Use");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Item::Verbatim(v0) => {
-+ let mut formatter = formatter.debug_tuple("Verbatim");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemConst {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemConst");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("const_token", &self.const_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemEnum {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemEnum");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("enum_token", &self.enum_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("generics", &self.generics);
-+ formatter.field("brace_token", &self.brace_token);
-+ formatter.field("variants", &self.variants);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemExternCrate {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemExternCrate");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("extern_token", &self.extern_token);
-+ formatter.field("crate_token", &self.crate_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("rename", &self.rename);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemFn {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemFn");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("sig", &self.sig);
-+ formatter.field("block", &self.block);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemForeignMod {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemForeignMod");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("abi", &self.abi);
-+ formatter.field("brace_token", &self.brace_token);
-+ formatter.field("items", &self.items);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemImpl {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemImpl");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("defaultness", &self.defaultness);
-+ formatter.field("unsafety", &self.unsafety);
-+ formatter.field("impl_token", &self.impl_token);
-+ formatter.field("generics", &self.generics);
-+ formatter.field("trait_", &self.trait_);
-+ formatter.field("self_ty", &self.self_ty);
-+ formatter.field("brace_token", &self.brace_token);
-+ formatter.field("items", &self.items);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemMacro {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemMacro");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("mac", &self.mac);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemMacro2 {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemMacro2");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("macro_token", &self.macro_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("rules", &self.rules);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemMod {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemMod");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("mod_token", &self.mod_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("content", &self.content);
-+ formatter.field("semi", &self.semi);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemStatic {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemStatic");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("static_token", &self.static_token);
-+ formatter.field("mutability", &self.mutability);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("expr", &self.expr);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemStruct {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemStruct");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("struct_token", &self.struct_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("generics", &self.generics);
-+ formatter.field("fields", &self.fields);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemTrait {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemTrait");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("unsafety", &self.unsafety);
-+ formatter.field("auto_token", &self.auto_token);
-+ formatter.field("trait_token", &self.trait_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("generics", &self.generics);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("supertraits", &self.supertraits);
-+ formatter.field("brace_token", &self.brace_token);
-+ formatter.field("items", &self.items);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemTraitAlias {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemTraitAlias");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("trait_token", &self.trait_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("generics", &self.generics);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("bounds", &self.bounds);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemType {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemType");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("type_token", &self.type_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("generics", &self.generics);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemUnion {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemUnion");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("union_token", &self.union_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("generics", &self.generics);
-+ formatter.field("fields", &self.fields);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for ItemUse {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ItemUse");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("vis", &self.vis);
-+ formatter.field("use_token", &self.use_token);
-+ formatter.field("leading_colon", &self.leading_colon);
-+ formatter.field("tree", &self.tree);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for Label {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Label");
-+ formatter.field("name", &self.name);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.finish()
-+ }
-+}
-+impl Debug for Lifetime {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Lifetime");
-+ formatter.field("apostrophe", &self.apostrophe);
-+ formatter.field("ident", &self.ident);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for LifetimeDef {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("LifetimeDef");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("lifetime", &self.lifetime);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("bounds", &self.bounds);
-+ formatter.finish()
-+ }
-+}
-+impl Debug for Lit {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ Lit::Str(v0) => {
-+ let mut formatter = formatter.debug_tuple("Str");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Lit::ByteStr(v0) => {
-+ let mut formatter = formatter.debug_tuple("ByteStr");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Lit::Byte(v0) => {
-+ let mut formatter = formatter.debug_tuple("Byte");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Lit::Char(v0) => {
-+ let mut formatter = formatter.debug_tuple("Char");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Lit::Int(v0) => {
-+ let mut formatter = formatter.debug_tuple("Int");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Lit::Float(v0) => {
-+ let mut formatter = formatter.debug_tuple("Float");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Lit::Bool(v0) => {
-+ let mut formatter = formatter.debug_tuple("Bool");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Lit::Verbatim(v0) => {
-+ let mut formatter = formatter.debug_tuple("Verbatim");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for Local {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Local");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("let_token", &self.let_token);
-+ formatter.field("pat", &self.pat);
-+ formatter.field("init", &self.init);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Macro {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Macro");
-+ formatter.field("path", &self.path);
-+ formatter.field("bang_token", &self.bang_token);
-+ formatter.field("delimiter", &self.delimiter);
-+ formatter.field("tokens", &self.tokens);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for MacroDelimiter {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ MacroDelimiter::Paren(v0) => {
-+ let mut formatter = formatter.debug_tuple("Paren");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ MacroDelimiter::Brace(v0) => {
-+ let mut formatter = formatter.debug_tuple("Brace");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ MacroDelimiter::Bracket(v0) => {
-+ let mut formatter = formatter.debug_tuple("Bracket");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Member {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ Member::Named(v0) => {
-+ let mut formatter = formatter.debug_tuple("Named");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Member::Unnamed(v0) => {
-+ let mut formatter = formatter.debug_tuple("Unnamed");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Meta {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ Meta::Path(v0) => {
-+ let mut formatter = formatter.debug_tuple("Path");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Meta::List(v0) => {
-+ let mut formatter = formatter.debug_tuple("List");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Meta::NameValue(v0) => {
-+ let mut formatter = formatter.debug_tuple("NameValue");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for MetaList {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("MetaList");
-+ formatter.field("path", &self.path);
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("nested", &self.nested);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for MetaNameValue {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("MetaNameValue");
-+ formatter.field("path", &self.path);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("lit", &self.lit);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for MethodTurbofish {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("MethodTurbofish");
-+ formatter.field("colon2_token", &self.colon2_token);
-+ formatter.field("lt_token", &self.lt_token);
-+ formatter.field("args", &self.args);
-+ formatter.field("gt_token", &self.gt_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for NestedMeta {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ NestedMeta::Meta(v0) => {
-+ let mut formatter = formatter.debug_tuple("Meta");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ NestedMeta::Lit(v0) => {
-+ let mut formatter = formatter.debug_tuple("Lit");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for ParenthesizedGenericArguments {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("ParenthesizedGenericArguments");
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("inputs", &self.inputs);
-+ formatter.field("output", &self.output);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for Pat {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ Pat::Box(v0) => {
-+ let mut formatter = formatter.debug_tuple("Box");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Ident(v0) => {
-+ let mut formatter = formatter.debug_tuple("Ident");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Lit(v0) => {
-+ let mut formatter = formatter.debug_tuple("Lit");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Macro(v0) => {
-+ let mut formatter = formatter.debug_tuple("Macro");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Or(v0) => {
-+ let mut formatter = formatter.debug_tuple("Or");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Path(v0) => {
-+ let mut formatter = formatter.debug_tuple("Path");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Range(v0) => {
-+ let mut formatter = formatter.debug_tuple("Range");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Reference(v0) => {
-+ let mut formatter = formatter.debug_tuple("Reference");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Rest(v0) => {
-+ let mut formatter = formatter.debug_tuple("Rest");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Slice(v0) => {
-+ let mut formatter = formatter.debug_tuple("Slice");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Struct(v0) => {
-+ let mut formatter = formatter.debug_tuple("Struct");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Tuple(v0) => {
-+ let mut formatter = formatter.debug_tuple("Tuple");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::TupleStruct(v0) => {
-+ let mut formatter = formatter.debug_tuple("TupleStruct");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Type(v0) => {
-+ let mut formatter = formatter.debug_tuple("Type");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Verbatim(v0) => {
-+ let mut formatter = formatter.debug_tuple("Verbatim");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Pat::Wild(v0) => {
-+ let mut formatter = formatter.debug_tuple("Wild");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatBox {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatBox");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("box_token", &self.box_token);
-+ formatter.field("pat", &self.pat);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatIdent {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatIdent");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("by_ref", &self.by_ref);
-+ formatter.field("mutability", &self.mutability);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("subpat", &self.subpat);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatLit {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatLit");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("expr", &self.expr);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatMacro {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatMacro");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("mac", &self.mac);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatOr {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatOr");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("leading_vert", &self.leading_vert);
-+ formatter.field("cases", &self.cases);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatPath {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatPath");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("qself", &self.qself);
-+ formatter.field("path", &self.path);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatRange {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatRange");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("lo", &self.lo);
-+ formatter.field("limits", &self.limits);
-+ formatter.field("hi", &self.hi);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatReference {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatReference");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("and_token", &self.and_token);
-+ formatter.field("mutability", &self.mutability);
-+ formatter.field("pat", &self.pat);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatRest {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatRest");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("dot2_token", &self.dot2_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatSlice {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatSlice");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("bracket_token", &self.bracket_token);
-+ formatter.field("elems", &self.elems);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatStruct {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatStruct");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("path", &self.path);
-+ formatter.field("brace_token", &self.brace_token);
-+ formatter.field("fields", &self.fields);
-+ formatter.field("dot2_token", &self.dot2_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatTuple {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatTuple");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("elems", &self.elems);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatTupleStruct {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatTupleStruct");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("path", &self.path);
-+ formatter.field("pat", &self.pat);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatType {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatType");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("pat", &self.pat);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for PatWild {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PatWild");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("underscore_token", &self.underscore_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Path {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Path");
-+ formatter.field("leading_colon", &self.leading_colon);
-+ formatter.field("segments", &self.segments);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for PathArguments {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ PathArguments::None => formatter.write_str("None"),
-+ PathArguments::AngleBracketed(v0) => {
-+ let mut formatter = formatter.debug_tuple("AngleBracketed");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ PathArguments::Parenthesized(v0) => {
-+ let mut formatter = formatter.debug_tuple("Parenthesized");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for PathSegment {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PathSegment");
-+ formatter.field("ident", &self.ident);
-+ formatter.field("arguments", &self.arguments);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for PredicateEq {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PredicateEq");
-+ formatter.field("lhs_ty", &self.lhs_ty);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("rhs_ty", &self.rhs_ty);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for PredicateLifetime {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PredicateLifetime");
-+ formatter.field("lifetime", &self.lifetime);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("bounds", &self.bounds);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for PredicateType {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("PredicateType");
-+ formatter.field("lifetimes", &self.lifetimes);
-+ formatter.field("bounded_ty", &self.bounded_ty);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("bounds", &self.bounds);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for QSelf {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("QSelf");
-+ formatter.field("lt_token", &self.lt_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.field("position", &self.position);
-+ formatter.field("as_token", &self.as_token);
-+ formatter.field("gt_token", &self.gt_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for RangeLimits {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ RangeLimits::HalfOpen(v0) => {
-+ let mut formatter = formatter.debug_tuple("HalfOpen");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ RangeLimits::Closed(v0) => {
-+ let mut formatter = formatter.debug_tuple("Closed");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for Receiver {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Receiver");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("reference", &self.reference);
-+ formatter.field("mutability", &self.mutability);
-+ formatter.field("self_token", &self.self_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for ReturnType {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ ReturnType::Default => formatter.write_str("Default"),
-+ ReturnType::Type(v0, v1) => {
-+ let mut formatter = formatter.debug_tuple("Type");
-+ formatter.field(v0);
-+ formatter.field(v1);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for Signature {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Signature");
-+ formatter.field("constness", &self.constness);
-+ formatter.field("asyncness", &self.asyncness);
-+ formatter.field("unsafety", &self.unsafety);
-+ formatter.field("abi", &self.abi);
-+ formatter.field("fn_token", &self.fn_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("generics", &self.generics);
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("inputs", &self.inputs);
-+ formatter.field("variadic", &self.variadic);
-+ formatter.field("output", &self.output);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for Stmt {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ Stmt::Local(v0) => {
-+ let mut formatter = formatter.debug_tuple("Local");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Stmt::Item(v0) => {
-+ let mut formatter = formatter.debug_tuple("Item");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Stmt::Expr(v0) => {
-+ let mut formatter = formatter.debug_tuple("Expr");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Stmt::Semi(v0, v1) => {
-+ let mut formatter = formatter.debug_tuple("Semi");
-+ formatter.field(v0);
-+ formatter.field(v1);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TraitBound {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TraitBound");
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("modifier", &self.modifier);
-+ formatter.field("lifetimes", &self.lifetimes);
-+ formatter.field("path", &self.path);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TraitBoundModifier {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ TraitBoundModifier::None => formatter.write_str("None"),
-+ TraitBoundModifier::Maybe(v0) => {
-+ let mut formatter = formatter.debug_tuple("Maybe");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for TraitItem {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ TraitItem::Const(v0) => {
-+ let mut formatter = formatter.debug_tuple("Const");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ TraitItem::Method(v0) => {
-+ let mut formatter = formatter.debug_tuple("Method");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ TraitItem::Type(v0) => {
-+ let mut formatter = formatter.debug_tuple("Type");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ TraitItem::Macro(v0) => {
-+ let mut formatter = formatter.debug_tuple("Macro");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ TraitItem::Verbatim(v0) => {
-+ let mut formatter = formatter.debug_tuple("Verbatim");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for TraitItemConst {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TraitItemConst");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("const_token", &self.const_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("ty", &self.ty);
-+ formatter.field("default", &self.default);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for TraitItemMacro {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TraitItemMacro");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("mac", &self.mac);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for TraitItemMethod {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TraitItemMethod");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("sig", &self.sig);
-+ formatter.field("default", &self.default);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for TraitItemType {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TraitItemType");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("type_token", &self.type_token);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("generics", &self.generics);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("bounds", &self.bounds);
-+ formatter.field("default", &self.default);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Type {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ Type::Array(v0) => {
-+ let mut formatter = formatter.debug_tuple("Array");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::BareFn(v0) => {
-+ let mut formatter = formatter.debug_tuple("BareFn");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::Group(v0) => {
-+ let mut formatter = formatter.debug_tuple("Group");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::ImplTrait(v0) => {
-+ let mut formatter = formatter.debug_tuple("ImplTrait");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::Infer(v0) => {
-+ let mut formatter = formatter.debug_tuple("Infer");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::Macro(v0) => {
-+ let mut formatter = formatter.debug_tuple("Macro");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::Never(v0) => {
-+ let mut formatter = formatter.debug_tuple("Never");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::Paren(v0) => {
-+ let mut formatter = formatter.debug_tuple("Paren");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::Path(v0) => {
-+ let mut formatter = formatter.debug_tuple("Path");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::Ptr(v0) => {
-+ let mut formatter = formatter.debug_tuple("Ptr");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::Reference(v0) => {
-+ let mut formatter = formatter.debug_tuple("Reference");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::Slice(v0) => {
-+ let mut formatter = formatter.debug_tuple("Slice");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::TraitObject(v0) => {
-+ let mut formatter = formatter.debug_tuple("TraitObject");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::Tuple(v0) => {
-+ let mut formatter = formatter.debug_tuple("Tuple");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Type::Verbatim(v0) => {
-+ let mut formatter = formatter.debug_tuple("Verbatim");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeArray {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeArray");
-+ formatter.field("bracket_token", &self.bracket_token);
-+ formatter.field("elem", &self.elem);
-+ formatter.field("semi_token", &self.semi_token);
-+ formatter.field("len", &self.len);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeBareFn {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeBareFn");
-+ formatter.field("lifetimes", &self.lifetimes);
-+ formatter.field("unsafety", &self.unsafety);
-+ formatter.field("abi", &self.abi);
-+ formatter.field("fn_token", &self.fn_token);
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("inputs", &self.inputs);
-+ formatter.field("variadic", &self.variadic);
-+ formatter.field("output", &self.output);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeGroup {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeGroup");
-+ formatter.field("group_token", &self.group_token);
-+ formatter.field("elem", &self.elem);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeImplTrait {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeImplTrait");
-+ formatter.field("impl_token", &self.impl_token);
-+ formatter.field("bounds", &self.bounds);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeInfer {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeInfer");
-+ formatter.field("underscore_token", &self.underscore_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeMacro {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeMacro");
-+ formatter.field("mac", &self.mac);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeNever {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeNever");
-+ formatter.field("bang_token", &self.bang_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeParam {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeParam");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("colon_token", &self.colon_token);
-+ formatter.field("bounds", &self.bounds);
-+ formatter.field("eq_token", &self.eq_token);
-+ formatter.field("default", &self.default);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeParamBound {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ TypeParamBound::Trait(v0) => {
-+ let mut formatter = formatter.debug_tuple("Trait");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ TypeParamBound::Lifetime(v0) => {
-+ let mut formatter = formatter.debug_tuple("Lifetime");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeParen {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeParen");
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("elem", &self.elem);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypePath {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypePath");
-+ formatter.field("qself", &self.qself);
-+ formatter.field("path", &self.path);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypePtr {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypePtr");
-+ formatter.field("star_token", &self.star_token);
-+ formatter.field("const_token", &self.const_token);
-+ formatter.field("mutability", &self.mutability);
-+ formatter.field("elem", &self.elem);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeReference {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeReference");
-+ formatter.field("and_token", &self.and_token);
-+ formatter.field("lifetime", &self.lifetime);
-+ formatter.field("mutability", &self.mutability);
-+ formatter.field("elem", &self.elem);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeSlice {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeSlice");
-+ formatter.field("bracket_token", &self.bracket_token);
-+ formatter.field("elem", &self.elem);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeTraitObject {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeTraitObject");
-+ formatter.field("dyn_token", &self.dyn_token);
-+ formatter.field("bounds", &self.bounds);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for TypeTuple {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("TypeTuple");
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("elems", &self.elems);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for UnOp {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ UnOp::Deref(v0) => {
-+ let mut formatter = formatter.debug_tuple("Deref");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ UnOp::Not(v0) => {
-+ let mut formatter = formatter.debug_tuple("Not");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ UnOp::Neg(v0) => {
-+ let mut formatter = formatter.debug_tuple("Neg");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for UseGlob {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("UseGlob");
-+ formatter.field("star_token", &self.star_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for UseGroup {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("UseGroup");
-+ formatter.field("brace_token", &self.brace_token);
-+ formatter.field("items", &self.items);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for UseName {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("UseName");
-+ formatter.field("ident", &self.ident);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for UsePath {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("UsePath");
-+ formatter.field("ident", &self.ident);
-+ formatter.field("colon2_token", &self.colon2_token);
-+ formatter.field("tree", &self.tree);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for UseRename {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("UseRename");
-+ formatter.field("ident", &self.ident);
-+ formatter.field("as_token", &self.as_token);
-+ formatter.field("rename", &self.rename);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Debug for UseTree {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ UseTree::Path(v0) => {
-+ let mut formatter = formatter.debug_tuple("Path");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ UseTree::Name(v0) => {
-+ let mut formatter = formatter.debug_tuple("Name");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ UseTree::Rename(v0) => {
-+ let mut formatter = formatter.debug_tuple("Rename");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ UseTree::Glob(v0) => {
-+ let mut formatter = formatter.debug_tuple("Glob");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ UseTree::Group(v0) => {
-+ let mut formatter = formatter.debug_tuple("Group");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Variadic {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Variadic");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("dots", &self.dots);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Variant {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("Variant");
-+ formatter.field("attrs", &self.attrs);
-+ formatter.field("ident", &self.ident);
-+ formatter.field("fields", &self.fields);
-+ formatter.field("discriminant", &self.discriminant);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for VisCrate {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("VisCrate");
-+ formatter.field("crate_token", &self.crate_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for VisPublic {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("VisPublic");
-+ formatter.field("pub_token", &self.pub_token);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for VisRestricted {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("VisRestricted");
-+ formatter.field("pub_token", &self.pub_token);
-+ formatter.field("paren_token", &self.paren_token);
-+ formatter.field("in_token", &self.in_token);
-+ formatter.field("path", &self.path);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for Visibility {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ Visibility::Public(v0) => {
-+ let mut formatter = formatter.debug_tuple("Public");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Visibility::Crate(v0) => {
-+ let mut formatter = formatter.debug_tuple("Crate");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Visibility::Restricted(v0) => {
-+ let mut formatter = formatter.debug_tuple("Restricted");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ Visibility::Inherited => formatter.write_str("Inherited"),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for WhereClause {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ let mut formatter = formatter.debug_struct("WhereClause");
-+ formatter.field("where_token", &self.where_token);
-+ formatter.field("predicates", &self.predicates);
-+ formatter.finish()
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Debug for WherePredicate {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ match self {
-+ WherePredicate::Type(v0) => {
-+ let mut formatter = formatter.debug_tuple("Type");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ WherePredicate::Lifetime(v0) => {
-+ let mut formatter = formatter.debug_tuple("Lifetime");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ WherePredicate::Eq(v0) => {
-+ let mut formatter = formatter.debug_tuple("Eq");
-+ formatter.field(v0);
-+ formatter.finish()
-+ }
-+ }
-+ }
-+}
-diff --git a/third_party/rust/syn/src/gen/eq.rs b/third_party/rust/syn/src/gen/eq.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/src/gen/eq.rs
-@@ -0,0 +1,1930 @@
-+// This file is @generated by syn-internal-codegen.
-+// It is not intended for manual editing.
-+
-+#[cfg(any(feature = "derive", feature = "full"))]
-+use crate::tt::TokenStreamHelper;
-+use crate::*;
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Abi {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Abi {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.name == other.name
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for AngleBracketedGenericArguments {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for AngleBracketedGenericArguments {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.colon2_token == other.colon2_token && self.args == other.args
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for Arm {}
-+#[cfg(feature = "full")]
-+impl PartialEq for Arm {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.pat == other.pat
-+ && self.guard == other.guard
-+ && self.body == other.body
-+ && self.comma == other.comma
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for AttrStyle {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for AttrStyle {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (AttrStyle::Outer, AttrStyle::Outer) => true,
-+ (AttrStyle::Inner(_), AttrStyle::Inner(_)) => true,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Attribute {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Attribute {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.style == other.style
-+ && self.path == other.path
-+ && TokenStreamHelper(&self.tokens) == TokenStreamHelper(&other.tokens)
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for BareFnArg {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for BareFnArg {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.name == other.name && self.ty == other.ty
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for BinOp {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for BinOp {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (BinOp::Add(_), BinOp::Add(_)) => true,
-+ (BinOp::Sub(_), BinOp::Sub(_)) => true,
-+ (BinOp::Mul(_), BinOp::Mul(_)) => true,
-+ (BinOp::Div(_), BinOp::Div(_)) => true,
-+ (BinOp::Rem(_), BinOp::Rem(_)) => true,
-+ (BinOp::And(_), BinOp::And(_)) => true,
-+ (BinOp::Or(_), BinOp::Or(_)) => true,
-+ (BinOp::BitXor(_), BinOp::BitXor(_)) => true,
-+ (BinOp::BitAnd(_), BinOp::BitAnd(_)) => true,
-+ (BinOp::BitOr(_), BinOp::BitOr(_)) => true,
-+ (BinOp::Shl(_), BinOp::Shl(_)) => true,
-+ (BinOp::Shr(_), BinOp::Shr(_)) => true,
-+ (BinOp::Eq(_), BinOp::Eq(_)) => true,
-+ (BinOp::Lt(_), BinOp::Lt(_)) => true,
-+ (BinOp::Le(_), BinOp::Le(_)) => true,
-+ (BinOp::Ne(_), BinOp::Ne(_)) => true,
-+ (BinOp::Ge(_), BinOp::Ge(_)) => true,
-+ (BinOp::Gt(_), BinOp::Gt(_)) => true,
-+ (BinOp::AddEq(_), BinOp::AddEq(_)) => true,
-+ (BinOp::SubEq(_), BinOp::SubEq(_)) => true,
-+ (BinOp::MulEq(_), BinOp::MulEq(_)) => true,
-+ (BinOp::DivEq(_), BinOp::DivEq(_)) => true,
-+ (BinOp::RemEq(_), BinOp::RemEq(_)) => true,
-+ (BinOp::BitXorEq(_), BinOp::BitXorEq(_)) => true,
-+ (BinOp::BitAndEq(_), BinOp::BitAndEq(_)) => true,
-+ (BinOp::BitOrEq(_), BinOp::BitOrEq(_)) => true,
-+ (BinOp::ShlEq(_), BinOp::ShlEq(_)) => true,
-+ (BinOp::ShrEq(_), BinOp::ShrEq(_)) => true,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Binding {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Binding {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.ident == other.ident && self.ty == other.ty
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for Block {}
-+#[cfg(feature = "full")]
-+impl PartialEq for Block {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.stmts == other.stmts
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for BoundLifetimes {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for BoundLifetimes {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.lifetimes == other.lifetimes
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for ConstParam {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for ConstParam {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.ident == other.ident
-+ && self.ty == other.ty
-+ && self.eq_token == other.eq_token
-+ && self.default == other.default
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Constraint {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Constraint {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.ident == other.ident && self.bounds == other.bounds
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Eq for Data {}
-+#[cfg(feature = "derive")]
-+impl PartialEq for Data {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (Data::Struct(self0), Data::Struct(other0)) => self0 == other0,
-+ (Data::Enum(self0), Data::Enum(other0)) => self0 == other0,
-+ (Data::Union(self0), Data::Union(other0)) => self0 == other0,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Eq for DataEnum {}
-+#[cfg(feature = "derive")]
-+impl PartialEq for DataEnum {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.variants == other.variants
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Eq for DataStruct {}
-+#[cfg(feature = "derive")]
-+impl PartialEq for DataStruct {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.fields == other.fields && self.semi_token == other.semi_token
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Eq for DataUnion {}
-+#[cfg(feature = "derive")]
-+impl PartialEq for DataUnion {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.fields == other.fields
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Eq for DeriveInput {}
-+#[cfg(feature = "derive")]
-+impl PartialEq for DeriveInput {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.ident == other.ident
-+ && self.generics == other.generics
-+ && self.data == other.data
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Expr {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Expr {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ #[cfg(feature = "full")]
-+ (Expr::Array(self0), Expr::Array(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Assign(self0), Expr::Assign(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::AssignOp(self0), Expr::AssignOp(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Async(self0), Expr::Async(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Await(self0), Expr::Await(other0)) => self0 == other0,
-+ (Expr::Binary(self0), Expr::Binary(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Block(self0), Expr::Block(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Box(self0), Expr::Box(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Break(self0), Expr::Break(other0)) => self0 == other0,
-+ (Expr::Call(self0), Expr::Call(other0)) => self0 == other0,
-+ (Expr::Cast(self0), Expr::Cast(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Closure(self0), Expr::Closure(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Continue(self0), Expr::Continue(other0)) => self0 == other0,
-+ (Expr::Field(self0), Expr::Field(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::ForLoop(self0), Expr::ForLoop(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Group(self0), Expr::Group(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::If(self0), Expr::If(other0)) => self0 == other0,
-+ (Expr::Index(self0), Expr::Index(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Let(self0), Expr::Let(other0)) => self0 == other0,
-+ (Expr::Lit(self0), Expr::Lit(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Loop(self0), Expr::Loop(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Macro(self0), Expr::Macro(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Match(self0), Expr::Match(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::MethodCall(self0), Expr::MethodCall(other0)) => self0 == other0,
-+ (Expr::Paren(self0), Expr::Paren(other0)) => self0 == other0,
-+ (Expr::Path(self0), Expr::Path(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Range(self0), Expr::Range(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Reference(self0), Expr::Reference(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Repeat(self0), Expr::Repeat(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Return(self0), Expr::Return(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Struct(self0), Expr::Struct(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Try(self0), Expr::Try(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::TryBlock(self0), Expr::TryBlock(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Tuple(self0), Expr::Tuple(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Type(self0), Expr::Type(other0)) => self0 == other0,
-+ (Expr::Unary(self0), Expr::Unary(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Unsafe(self0), Expr::Unsafe(other0)) => self0 == other0,
-+ (Expr::Verbatim(self0), Expr::Verbatim(other0)) => {
-+ TokenStreamHelper(self0) == TokenStreamHelper(other0)
-+ }
-+ #[cfg(feature = "full")]
-+ (Expr::While(self0), Expr::While(other0)) => self0 == other0,
-+ #[cfg(feature = "full")]
-+ (Expr::Yield(self0), Expr::Yield(other0)) => self0 == other0,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprArray {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprArray {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.elems == other.elems
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprAssign {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprAssign {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.left == other.left && self.right == other.right
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprAssignOp {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprAssignOp {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.left == other.left
-+ && self.op == other.op
-+ && self.right == other.right
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprAsync {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprAsync {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.capture == other.capture && self.block == other.block
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprAwait {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprAwait {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.base == other.base
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for ExprBinary {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for ExprBinary {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.left == other.left
-+ && self.op == other.op
-+ && self.right == other.right
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprBlock {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprBlock {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.label == other.label && self.block == other.block
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprBox {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprBox {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.expr == other.expr
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprBreak {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprBreak {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.label == other.label && self.expr == other.expr
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for ExprCall {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for ExprCall {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.func == other.func && self.args == other.args
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for ExprCast {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for ExprCast {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.expr == other.expr && self.ty == other.ty
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprClosure {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprClosure {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.asyncness == other.asyncness
-+ && self.movability == other.movability
-+ && self.capture == other.capture
-+ && self.inputs == other.inputs
-+ && self.output == other.output
-+ && self.body == other.body
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprContinue {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprContinue {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.label == other.label
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for ExprField {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for ExprField {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.base == other.base && self.member == other.member
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprForLoop {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprForLoop {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.label == other.label
-+ && self.pat == other.pat
-+ && self.expr == other.expr
-+ && self.body == other.body
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprGroup {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprGroup {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.expr == other.expr
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprIf {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprIf {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.cond == other.cond
-+ && self.then_branch == other.then_branch
-+ && self.else_branch == other.else_branch
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for ExprIndex {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for ExprIndex {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.expr == other.expr && self.index == other.index
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprLet {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprLet {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.pat == other.pat && self.expr == other.expr
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for ExprLit {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for ExprLit {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.lit == other.lit
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprLoop {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprLoop {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.label == other.label && self.body == other.body
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprMacro {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprMacro {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.mac == other.mac
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprMatch {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprMatch {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.expr == other.expr && self.arms == other.arms
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprMethodCall {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprMethodCall {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.receiver == other.receiver
-+ && self.method == other.method
-+ && self.turbofish == other.turbofish
-+ && self.args == other.args
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for ExprParen {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for ExprParen {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.expr == other.expr
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for ExprPath {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for ExprPath {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.qself == other.qself && self.path == other.path
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprRange {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprRange {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.from == other.from
-+ && self.limits == other.limits
-+ && self.to == other.to
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprReference {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprReference {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.mutability == other.mutability && self.expr == other.expr
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprRepeat {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprRepeat {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.expr == other.expr && self.len == other.len
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprReturn {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprReturn {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.expr == other.expr
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprStruct {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprStruct {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.path == other.path
-+ && self.fields == other.fields
-+ && self.dot2_token == other.dot2_token
-+ && self.rest == other.rest
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprTry {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprTry {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.expr == other.expr
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprTryBlock {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprTryBlock {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.block == other.block
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprTuple {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprTuple {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.elems == other.elems
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprType {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprType {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.expr == other.expr && self.ty == other.ty
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for ExprUnary {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for ExprUnary {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.op == other.op && self.expr == other.expr
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprUnsafe {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprUnsafe {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.block == other.block
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprWhile {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprWhile {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.label == other.label
-+ && self.cond == other.cond
-+ && self.body == other.body
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ExprYield {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ExprYield {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.expr == other.expr
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Field {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Field {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.ident == other.ident
-+ && self.colon_token == other.colon_token
-+ && self.ty == other.ty
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for FieldPat {}
-+#[cfg(feature = "full")]
-+impl PartialEq for FieldPat {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.member == other.member
-+ && self.colon_token == other.colon_token
-+ && self.pat == other.pat
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for FieldValue {}
-+#[cfg(feature = "full")]
-+impl PartialEq for FieldValue {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.member == other.member
-+ && self.colon_token == other.colon_token
-+ && self.expr == other.expr
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Fields {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Fields {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (Fields::Named(self0), Fields::Named(other0)) => self0 == other0,
-+ (Fields::Unnamed(self0), Fields::Unnamed(other0)) => self0 == other0,
-+ (Fields::Unit, Fields::Unit) => true,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for FieldsNamed {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for FieldsNamed {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.named == other.named
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for FieldsUnnamed {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for FieldsUnnamed {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.unnamed == other.unnamed
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for File {}
-+#[cfg(feature = "full")]
-+impl PartialEq for File {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.shebang == other.shebang && self.attrs == other.attrs && self.items == other.items
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for FnArg {}
-+#[cfg(feature = "full")]
-+impl PartialEq for FnArg {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (FnArg::Receiver(self0), FnArg::Receiver(other0)) => self0 == other0,
-+ (FnArg::Typed(self0), FnArg::Typed(other0)) => self0 == other0,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ForeignItem {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ForeignItem {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (ForeignItem::Fn(self0), ForeignItem::Fn(other0)) => self0 == other0,
-+ (ForeignItem::Static(self0), ForeignItem::Static(other0)) => self0 == other0,
-+ (ForeignItem::Type(self0), ForeignItem::Type(other0)) => self0 == other0,
-+ (ForeignItem::Macro(self0), ForeignItem::Macro(other0)) => self0 == other0,
-+ (ForeignItem::Verbatim(self0), ForeignItem::Verbatim(other0)) => {
-+ TokenStreamHelper(self0) == TokenStreamHelper(other0)
-+ }
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ForeignItemFn {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ForeignItemFn {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.vis == other.vis && self.sig == other.sig
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ForeignItemMacro {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ForeignItemMacro {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.mac == other.mac && self.semi_token == other.semi_token
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ForeignItemStatic {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ForeignItemStatic {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.mutability == other.mutability
-+ && self.ident == other.ident
-+ && self.ty == other.ty
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ForeignItemType {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ForeignItemType {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.vis == other.vis && self.ident == other.ident
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for GenericArgument {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for GenericArgument {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (GenericArgument::Lifetime(self0), GenericArgument::Lifetime(other0)) => {
-+ self0 == other0
-+ }
-+ (GenericArgument::Type(self0), GenericArgument::Type(other0)) => self0 == other0,
-+ (GenericArgument::Binding(self0), GenericArgument::Binding(other0)) => self0 == other0,
-+ (GenericArgument::Constraint(self0), GenericArgument::Constraint(other0)) => {
-+ self0 == other0
-+ }
-+ (GenericArgument::Const(self0), GenericArgument::Const(other0)) => self0 == other0,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for GenericMethodArgument {}
-+#[cfg(feature = "full")]
-+impl PartialEq for GenericMethodArgument {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (GenericMethodArgument::Type(self0), GenericMethodArgument::Type(other0)) => {
-+ self0 == other0
-+ }
-+ (GenericMethodArgument::Const(self0), GenericMethodArgument::Const(other0)) => {
-+ self0 == other0
-+ }
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for GenericParam {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for GenericParam {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (GenericParam::Type(self0), GenericParam::Type(other0)) => self0 == other0,
-+ (GenericParam::Lifetime(self0), GenericParam::Lifetime(other0)) => self0 == other0,
-+ (GenericParam::Const(self0), GenericParam::Const(other0)) => self0 == other0,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Generics {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Generics {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.lt_token == other.lt_token
-+ && self.params == other.params
-+ && self.gt_token == other.gt_token
-+ && self.where_clause == other.where_clause
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ImplItem {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ImplItem {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (ImplItem::Const(self0), ImplItem::Const(other0)) => self0 == other0,
-+ (ImplItem::Method(self0), ImplItem::Method(other0)) => self0 == other0,
-+ (ImplItem::Type(self0), ImplItem::Type(other0)) => self0 == other0,
-+ (ImplItem::Macro(self0), ImplItem::Macro(other0)) => self0 == other0,
-+ (ImplItem::Verbatim(self0), ImplItem::Verbatim(other0)) => {
-+ TokenStreamHelper(self0) == TokenStreamHelper(other0)
-+ }
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ImplItemConst {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ImplItemConst {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.defaultness == other.defaultness
-+ && self.ident == other.ident
-+ && self.ty == other.ty
-+ && self.expr == other.expr
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ImplItemMacro {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ImplItemMacro {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.mac == other.mac && self.semi_token == other.semi_token
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ImplItemMethod {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ImplItemMethod {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.defaultness == other.defaultness
-+ && self.sig == other.sig
-+ && self.block == other.block
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ImplItemType {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ImplItemType {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.defaultness == other.defaultness
-+ && self.ident == other.ident
-+ && self.generics == other.generics
-+ && self.ty == other.ty
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for Item {}
-+#[cfg(feature = "full")]
-+impl PartialEq for Item {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (Item::Const(self0), Item::Const(other0)) => self0 == other0,
-+ (Item::Enum(self0), Item::Enum(other0)) => self0 == other0,
-+ (Item::ExternCrate(self0), Item::ExternCrate(other0)) => self0 == other0,
-+ (Item::Fn(self0), Item::Fn(other0)) => self0 == other0,
-+ (Item::ForeignMod(self0), Item::ForeignMod(other0)) => self0 == other0,
-+ (Item::Impl(self0), Item::Impl(other0)) => self0 == other0,
-+ (Item::Macro(self0), Item::Macro(other0)) => self0 == other0,
-+ (Item::Macro2(self0), Item::Macro2(other0)) => self0 == other0,
-+ (Item::Mod(self0), Item::Mod(other0)) => self0 == other0,
-+ (Item::Static(self0), Item::Static(other0)) => self0 == other0,
-+ (Item::Struct(self0), Item::Struct(other0)) => self0 == other0,
-+ (Item::Trait(self0), Item::Trait(other0)) => self0 == other0,
-+ (Item::TraitAlias(self0), Item::TraitAlias(other0)) => self0 == other0,
-+ (Item::Type(self0), Item::Type(other0)) => self0 == other0,
-+ (Item::Union(self0), Item::Union(other0)) => self0 == other0,
-+ (Item::Use(self0), Item::Use(other0)) => self0 == other0,
-+ (Item::Verbatim(self0), Item::Verbatim(other0)) => {
-+ TokenStreamHelper(self0) == TokenStreamHelper(other0)
-+ }
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemConst {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemConst {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.ident == other.ident
-+ && self.ty == other.ty
-+ && self.expr == other.expr
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemEnum {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemEnum {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.ident == other.ident
-+ && self.generics == other.generics
-+ && self.variants == other.variants
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemExternCrate {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemExternCrate {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.ident == other.ident
-+ && self.rename == other.rename
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemFn {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemFn {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.sig == other.sig
-+ && self.block == other.block
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemForeignMod {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemForeignMod {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.abi == other.abi && self.items == other.items
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemImpl {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemImpl {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.defaultness == other.defaultness
-+ && self.unsafety == other.unsafety
-+ && self.generics == other.generics
-+ && self.trait_ == other.trait_
-+ && self.self_ty == other.self_ty
-+ && self.items == other.items
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemMacro {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemMacro {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.ident == other.ident
-+ && self.mac == other.mac
-+ && self.semi_token == other.semi_token
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemMacro2 {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemMacro2 {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.ident == other.ident
-+ && TokenStreamHelper(&self.rules) == TokenStreamHelper(&other.rules)
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemMod {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemMod {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.ident == other.ident
-+ && self.content == other.content
-+ && self.semi == other.semi
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemStatic {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemStatic {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.mutability == other.mutability
-+ && self.ident == other.ident
-+ && self.ty == other.ty
-+ && self.expr == other.expr
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemStruct {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemStruct {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.ident == other.ident
-+ && self.generics == other.generics
-+ && self.fields == other.fields
-+ && self.semi_token == other.semi_token
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemTrait {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemTrait {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.unsafety == other.unsafety
-+ && self.auto_token == other.auto_token
-+ && self.ident == other.ident
-+ && self.generics == other.generics
-+ && self.colon_token == other.colon_token
-+ && self.supertraits == other.supertraits
-+ && self.items == other.items
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemTraitAlias {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemTraitAlias {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.ident == other.ident
-+ && self.generics == other.generics
-+ && self.bounds == other.bounds
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemType {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemType {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.ident == other.ident
-+ && self.generics == other.generics
-+ && self.ty == other.ty
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemUnion {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemUnion {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.ident == other.ident
-+ && self.generics == other.generics
-+ && self.fields == other.fields
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for ItemUse {}
-+#[cfg(feature = "full")]
-+impl PartialEq for ItemUse {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.vis == other.vis
-+ && self.leading_colon == other.leading_colon
-+ && self.tree == other.tree
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for Label {}
-+#[cfg(feature = "full")]
-+impl PartialEq for Label {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.name == other.name
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for LifetimeDef {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for LifetimeDef {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.lifetime == other.lifetime
-+ && self.colon_token == other.colon_token
-+ && self.bounds == other.bounds
-+ }
-+}
-+impl Eq for Lit {}
-+impl PartialEq for Lit {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (Lit::Str(self0), Lit::Str(other0)) => self0 == other0,
-+ (Lit::ByteStr(self0), Lit::ByteStr(other0)) => self0 == other0,
-+ (Lit::Byte(self0), Lit::Byte(other0)) => self0 == other0,
-+ (Lit::Char(self0), Lit::Char(other0)) => self0 == other0,
-+ (Lit::Int(self0), Lit::Int(other0)) => self0 == other0,
-+ (Lit::Float(self0), Lit::Float(other0)) => self0 == other0,
-+ (Lit::Bool(self0), Lit::Bool(other0)) => self0 == other0,
-+ (Lit::Verbatim(self0), Lit::Verbatim(other0)) => {
-+ self0.to_string() == other0.to_string()
-+ }
-+ _ => false,
-+ }
-+ }
-+}
-+impl Eq for LitBool {}
-+impl PartialEq for LitBool {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.value == other.value
-+ }
-+}
-+impl Eq for LitByte {}
-+impl Eq for LitByteStr {}
-+impl Eq for LitChar {}
-+impl Eq for LitFloat {}
-+impl Eq for LitInt {}
-+impl Eq for LitStr {}
-+#[cfg(feature = "full")]
-+impl Eq for Local {}
-+#[cfg(feature = "full")]
-+impl PartialEq for Local {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.pat == other.pat && self.init == other.init
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Macro {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Macro {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.path == other.path
-+ && self.delimiter == other.delimiter
-+ && TokenStreamHelper(&self.tokens) == TokenStreamHelper(&other.tokens)
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for MacroDelimiter {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for MacroDelimiter {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (MacroDelimiter::Paren(_), MacroDelimiter::Paren(_)) => true,
-+ (MacroDelimiter::Brace(_), MacroDelimiter::Brace(_)) => true,
-+ (MacroDelimiter::Bracket(_), MacroDelimiter::Bracket(_)) => true,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Meta {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Meta {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (Meta::Path(self0), Meta::Path(other0)) => self0 == other0,
-+ (Meta::List(self0), Meta::List(other0)) => self0 == other0,
-+ (Meta::NameValue(self0), Meta::NameValue(other0)) => self0 == other0,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for MetaList {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for MetaList {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.path == other.path && self.nested == other.nested
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for MetaNameValue {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for MetaNameValue {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.path == other.path && self.lit == other.lit
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for MethodTurbofish {}
-+#[cfg(feature = "full")]
-+impl PartialEq for MethodTurbofish {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.args == other.args
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for NestedMeta {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for NestedMeta {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (NestedMeta::Meta(self0), NestedMeta::Meta(other0)) => self0 == other0,
-+ (NestedMeta::Lit(self0), NestedMeta::Lit(other0)) => self0 == other0,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for ParenthesizedGenericArguments {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for ParenthesizedGenericArguments {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.inputs == other.inputs && self.output == other.output
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for Pat {}
-+#[cfg(feature = "full")]
-+impl PartialEq for Pat {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (Pat::Box(self0), Pat::Box(other0)) => self0 == other0,
-+ (Pat::Ident(self0), Pat::Ident(other0)) => self0 == other0,
-+ (Pat::Lit(self0), Pat::Lit(other0)) => self0 == other0,
-+ (Pat::Macro(self0), Pat::Macro(other0)) => self0 == other0,
-+ (Pat::Or(self0), Pat::Or(other0)) => self0 == other0,
-+ (Pat::Path(self0), Pat::Path(other0)) => self0 == other0,
-+ (Pat::Range(self0), Pat::Range(other0)) => self0 == other0,
-+ (Pat::Reference(self0), Pat::Reference(other0)) => self0 == other0,
-+ (Pat::Rest(self0), Pat::Rest(other0)) => self0 == other0,
-+ (Pat::Slice(self0), Pat::Slice(other0)) => self0 == other0,
-+ (Pat::Struct(self0), Pat::Struct(other0)) => self0 == other0,
-+ (Pat::Tuple(self0), Pat::Tuple(other0)) => self0 == other0,
-+ (Pat::TupleStruct(self0), Pat::TupleStruct(other0)) => self0 == other0,
-+ (Pat::Type(self0), Pat::Type(other0)) => self0 == other0,
-+ (Pat::Verbatim(self0), Pat::Verbatim(other0)) => {
-+ TokenStreamHelper(self0) == TokenStreamHelper(other0)
-+ }
-+ (Pat::Wild(self0), Pat::Wild(other0)) => self0 == other0,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatBox {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatBox {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.pat == other.pat
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatIdent {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatIdent {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.by_ref == other.by_ref
-+ && self.mutability == other.mutability
-+ && self.ident == other.ident
-+ && self.subpat == other.subpat
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatLit {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatLit {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.expr == other.expr
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatMacro {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatMacro {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.mac == other.mac
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatOr {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatOr {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.leading_vert == other.leading_vert
-+ && self.cases == other.cases
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatPath {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatPath {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.qself == other.qself && self.path == other.path
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatRange {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatRange {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.lo == other.lo
-+ && self.limits == other.limits
-+ && self.hi == other.hi
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatReference {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatReference {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.mutability == other.mutability && self.pat == other.pat
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatRest {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatRest {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatSlice {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatSlice {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.elems == other.elems
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatStruct {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatStruct {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.path == other.path
-+ && self.fields == other.fields
-+ && self.dot2_token == other.dot2_token
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatTuple {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatTuple {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.elems == other.elems
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatTupleStruct {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatTupleStruct {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.path == other.path && self.pat == other.pat
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatType {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatType {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.pat == other.pat && self.ty == other.ty
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for PatWild {}
-+#[cfg(feature = "full")]
-+impl PartialEq for PatWild {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Path {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Path {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.leading_colon == other.leading_colon && self.segments == other.segments
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for PathArguments {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for PathArguments {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (PathArguments::None, PathArguments::None) => true,
-+ (PathArguments::AngleBracketed(self0), PathArguments::AngleBracketed(other0)) => {
-+ self0 == other0
-+ }
-+ (PathArguments::Parenthesized(self0), PathArguments::Parenthesized(other0)) => {
-+ self0 == other0
-+ }
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for PathSegment {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for PathSegment {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.ident == other.ident && self.arguments == other.arguments
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for PredicateEq {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for PredicateEq {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.lhs_ty == other.lhs_ty && self.rhs_ty == other.rhs_ty
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for PredicateLifetime {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for PredicateLifetime {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.lifetime == other.lifetime && self.bounds == other.bounds
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for PredicateType {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for PredicateType {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.lifetimes == other.lifetimes
-+ && self.bounded_ty == other.bounded_ty
-+ && self.bounds == other.bounds
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for QSelf {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for QSelf {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.ty == other.ty && self.position == other.position && self.as_token == other.as_token
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for RangeLimits {}
-+#[cfg(feature = "full")]
-+impl PartialEq for RangeLimits {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (RangeLimits::HalfOpen(_), RangeLimits::HalfOpen(_)) => true,
-+ (RangeLimits::Closed(_), RangeLimits::Closed(_)) => true,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for Receiver {}
-+#[cfg(feature = "full")]
-+impl PartialEq for Receiver {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.reference == other.reference
-+ && self.mutability == other.mutability
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for ReturnType {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for ReturnType {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (ReturnType::Default, ReturnType::Default) => true,
-+ (ReturnType::Type(_, self1), ReturnType::Type(_, other1)) => self1 == other1,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for Signature {}
-+#[cfg(feature = "full")]
-+impl PartialEq for Signature {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.constness == other.constness
-+ && self.asyncness == other.asyncness
-+ && self.unsafety == other.unsafety
-+ && self.abi == other.abi
-+ && self.ident == other.ident
-+ && self.generics == other.generics
-+ && self.inputs == other.inputs
-+ && self.variadic == other.variadic
-+ && self.output == other.output
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for Stmt {}
-+#[cfg(feature = "full")]
-+impl PartialEq for Stmt {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (Stmt::Local(self0), Stmt::Local(other0)) => self0 == other0,
-+ (Stmt::Item(self0), Stmt::Item(other0)) => self0 == other0,
-+ (Stmt::Expr(self0), Stmt::Expr(other0)) => self0 == other0,
-+ (Stmt::Semi(self0, _), Stmt::Semi(other0, _)) => self0 == other0,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TraitBound {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TraitBound {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.paren_token == other.paren_token
-+ && self.modifier == other.modifier
-+ && self.lifetimes == other.lifetimes
-+ && self.path == other.path
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TraitBoundModifier {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TraitBoundModifier {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (TraitBoundModifier::None, TraitBoundModifier::None) => true,
-+ (TraitBoundModifier::Maybe(_), TraitBoundModifier::Maybe(_)) => true,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for TraitItem {}
-+#[cfg(feature = "full")]
-+impl PartialEq for TraitItem {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (TraitItem::Const(self0), TraitItem::Const(other0)) => self0 == other0,
-+ (TraitItem::Method(self0), TraitItem::Method(other0)) => self0 == other0,
-+ (TraitItem::Type(self0), TraitItem::Type(other0)) => self0 == other0,
-+ (TraitItem::Macro(self0), TraitItem::Macro(other0)) => self0 == other0,
-+ (TraitItem::Verbatim(self0), TraitItem::Verbatim(other0)) => {
-+ TokenStreamHelper(self0) == TokenStreamHelper(other0)
-+ }
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for TraitItemConst {}
-+#[cfg(feature = "full")]
-+impl PartialEq for TraitItemConst {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.ident == other.ident
-+ && self.ty == other.ty
-+ && self.default == other.default
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for TraitItemMacro {}
-+#[cfg(feature = "full")]
-+impl PartialEq for TraitItemMacro {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs && self.mac == other.mac && self.semi_token == other.semi_token
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for TraitItemMethod {}
-+#[cfg(feature = "full")]
-+impl PartialEq for TraitItemMethod {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.sig == other.sig
-+ && self.default == other.default
-+ && self.semi_token == other.semi_token
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for TraitItemType {}
-+#[cfg(feature = "full")]
-+impl PartialEq for TraitItemType {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.ident == other.ident
-+ && self.generics == other.generics
-+ && self.colon_token == other.colon_token
-+ && self.bounds == other.bounds
-+ && self.default == other.default
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Type {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Type {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (Type::Array(self0), Type::Array(other0)) => self0 == other0,
-+ (Type::BareFn(self0), Type::BareFn(other0)) => self0 == other0,
-+ (Type::Group(self0), Type::Group(other0)) => self0 == other0,
-+ (Type::ImplTrait(self0), Type::ImplTrait(other0)) => self0 == other0,
-+ (Type::Infer(self0), Type::Infer(other0)) => self0 == other0,
-+ (Type::Macro(self0), Type::Macro(other0)) => self0 == other0,
-+ (Type::Never(self0), Type::Never(other0)) => self0 == other0,
-+ (Type::Paren(self0), Type::Paren(other0)) => self0 == other0,
-+ (Type::Path(self0), Type::Path(other0)) => self0 == other0,
-+ (Type::Ptr(self0), Type::Ptr(other0)) => self0 == other0,
-+ (Type::Reference(self0), Type::Reference(other0)) => self0 == other0,
-+ (Type::Slice(self0), Type::Slice(other0)) => self0 == other0,
-+ (Type::TraitObject(self0), Type::TraitObject(other0)) => self0 == other0,
-+ (Type::Tuple(self0), Type::Tuple(other0)) => self0 == other0,
-+ (Type::Verbatim(self0), Type::Verbatim(other0)) => {
-+ TokenStreamHelper(self0) == TokenStreamHelper(other0)
-+ }
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeArray {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeArray {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.elem == other.elem && self.len == other.len
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeBareFn {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeBareFn {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.lifetimes == other.lifetimes
-+ && self.unsafety == other.unsafety
-+ && self.abi == other.abi
-+ && self.inputs == other.inputs
-+ && self.variadic == other.variadic
-+ && self.output == other.output
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeGroup {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeGroup {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.elem == other.elem
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeImplTrait {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeImplTrait {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.bounds == other.bounds
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeInfer {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeInfer {
-+ fn eq(&self, _other: &Self) -> bool {
-+ true
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeMacro {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeMacro {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.mac == other.mac
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeNever {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeNever {
-+ fn eq(&self, _other: &Self) -> bool {
-+ true
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeParam {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeParam {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.ident == other.ident
-+ && self.colon_token == other.colon_token
-+ && self.bounds == other.bounds
-+ && self.eq_token == other.eq_token
-+ && self.default == other.default
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeParamBound {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeParamBound {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (TypeParamBound::Trait(self0), TypeParamBound::Trait(other0)) => self0 == other0,
-+ (TypeParamBound::Lifetime(self0), TypeParamBound::Lifetime(other0)) => self0 == other0,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeParen {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeParen {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.elem == other.elem
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypePath {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypePath {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.qself == other.qself && self.path == other.path
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypePtr {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypePtr {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.const_token == other.const_token
-+ && self.mutability == other.mutability
-+ && self.elem == other.elem
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeReference {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeReference {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.lifetime == other.lifetime
-+ && self.mutability == other.mutability
-+ && self.elem == other.elem
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeSlice {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeSlice {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.elem == other.elem
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeTraitObject {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeTraitObject {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.dyn_token == other.dyn_token && self.bounds == other.bounds
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for TypeTuple {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for TypeTuple {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.elems == other.elems
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for UnOp {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for UnOp {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (UnOp::Deref(_), UnOp::Deref(_)) => true,
-+ (UnOp::Not(_), UnOp::Not(_)) => true,
-+ (UnOp::Neg(_), UnOp::Neg(_)) => true,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for UseGlob {}
-+#[cfg(feature = "full")]
-+impl PartialEq for UseGlob {
-+ fn eq(&self, _other: &Self) -> bool {
-+ true
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for UseGroup {}
-+#[cfg(feature = "full")]
-+impl PartialEq for UseGroup {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.items == other.items
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for UseName {}
-+#[cfg(feature = "full")]
-+impl PartialEq for UseName {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.ident == other.ident
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for UsePath {}
-+#[cfg(feature = "full")]
-+impl PartialEq for UsePath {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.ident == other.ident && self.tree == other.tree
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for UseRename {}
-+#[cfg(feature = "full")]
-+impl PartialEq for UseRename {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.ident == other.ident && self.rename == other.rename
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Eq for UseTree {}
-+#[cfg(feature = "full")]
-+impl PartialEq for UseTree {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (UseTree::Path(self0), UseTree::Path(other0)) => self0 == other0,
-+ (UseTree::Name(self0), UseTree::Name(other0)) => self0 == other0,
-+ (UseTree::Rename(self0), UseTree::Rename(other0)) => self0 == other0,
-+ (UseTree::Glob(self0), UseTree::Glob(other0)) => self0 == other0,
-+ (UseTree::Group(self0), UseTree::Group(other0)) => self0 == other0,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Variadic {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Variadic {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Variant {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Variant {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.attrs == other.attrs
-+ && self.ident == other.ident
-+ && self.fields == other.fields
-+ && self.discriminant == other.discriminant
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for VisCrate {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for VisCrate {
-+ fn eq(&self, _other: &Self) -> bool {
-+ true
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for VisPublic {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for VisPublic {
-+ fn eq(&self, _other: &Self) -> bool {
-+ true
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for VisRestricted {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for VisRestricted {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.in_token == other.in_token && self.path == other.path
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for Visibility {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for Visibility {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (Visibility::Public(self0), Visibility::Public(other0)) => self0 == other0,
-+ (Visibility::Crate(self0), Visibility::Crate(other0)) => self0 == other0,
-+ (Visibility::Restricted(self0), Visibility::Restricted(other0)) => self0 == other0,
-+ (Visibility::Inherited, Visibility::Inherited) => true,
-+ _ => false,
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for WhereClause {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for WhereClause {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.predicates == other.predicates
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Eq for WherePredicate {}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl PartialEq for WherePredicate {
-+ fn eq(&self, other: &Self) -> bool {
-+ match (self, other) {
-+ (WherePredicate::Type(self0), WherePredicate::Type(other0)) => self0 == other0,
-+ (WherePredicate::Lifetime(self0), WherePredicate::Lifetime(other0)) => self0 == other0,
-+ (WherePredicate::Eq(self0), WherePredicate::Eq(other0)) => self0 == other0,
-+ _ => false,
-+ }
-+ }
-+}
-diff --git a/third_party/rust/syn/src/gen/fold.rs b/third_party/rust/syn/src/gen/fold.rs
---- a/third_party/rust/syn/src/gen/fold.rs
-+++ b/third_party/rust/syn/src/gen/fold.rs
-@@ -1,12 +1,13 @@
- // This file is @generated by syn-internal-codegen.
- // It is not intended for manual editing.
-
- #![allow(unreachable_code, unused_variables)]
-+#![allow(clippy::match_wildcard_for_single_variants)]
- #[cfg(any(feature = "full", feature = "derive"))]
- use crate::gen::helper::fold::*;
- #[cfg(any(feature = "full", feature = "derive"))]
- use crate::token::{Brace, Bracket, Group, Paren};
- use crate::*;
- use proc_macro2::Span;
- #[cfg(feature = "full")]
- macro_rules! full {
-@@ -21,17 +22,17 @@ macro_rules! full {
- };
- }
- /// Syntax tree traversal to transform the nodes of an owned syntax tree.
- ///
- /// See the [module documentation] for details.
- ///
- /// [module documentation]: self
- ///
--/// *This trait is available if Syn is built with the `"fold"` feature.*
-+/// *This trait is available only if Syn is built with the `"fold"` feature.*
- pub trait Fold {
- #[cfg(any(feature = "derive", feature = "full"))]
- fn fold_abi(&mut self, i: Abi) -> Abi {
- fold_abi(self, i)
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- fn fold_angle_bracketed_generic_arguments(
- &mut self,
-@@ -428,45 +429,37 @@ pub trait Fold {
- }
- fn fold_lifetime(&mut self, i: Lifetime) -> Lifetime {
- fold_lifetime(self, i)
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- fn fold_lifetime_def(&mut self, i: LifetimeDef) -> LifetimeDef {
- fold_lifetime_def(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn fold_lit(&mut self, i: Lit) -> Lit {
- fold_lit(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn fold_lit_bool(&mut self, i: LitBool) -> LitBool {
- fold_lit_bool(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn fold_lit_byte(&mut self, i: LitByte) -> LitByte {
- fold_lit_byte(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn fold_lit_byte_str(&mut self, i: LitByteStr) -> LitByteStr {
- fold_lit_byte_str(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn fold_lit_char(&mut self, i: LitChar) -> LitChar {
- fold_lit_char(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn fold_lit_float(&mut self, i: LitFloat) -> LitFloat {
- fold_lit_float(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn fold_lit_int(&mut self, i: LitInt) -> LitInt {
- fold_lit_int(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn fold_lit_str(&mut self, i: LitStr) -> LitStr {
- fold_lit_str(self, i)
- }
- #[cfg(feature = "full")]
- fn fold_local(&mut self, i: Local) -> Local {
- fold_local(self, i)
- }
- #[cfg(any(feature = "derive", feature = "full"))]
-@@ -794,39 +787,39 @@ where
- pub fn fold_angle_bracketed_generic_arguments<F>(
- f: &mut F,
- node: AngleBracketedGenericArguments,
- ) -> AngleBracketedGenericArguments
- where
- F: Fold + ?Sized,
- {
- AngleBracketedGenericArguments {
-- colon2_token: (node.colon2_token).map(|it| Token ! [ :: ](tokens_helper(f, &it.spans))),
-- lt_token: Token ! [ < ](tokens_helper(f, &node.lt_token.spans)),
-+ colon2_token: (node.colon2_token).map(|it| Token ! [::](tokens_helper(f, &it.spans))),
-+ lt_token: Token ! [<](tokens_helper(f, &node.lt_token.spans)),
- args: FoldHelper::lift(node.args, |it| f.fold_generic_argument(it)),
-- gt_token: Token ! [ > ](tokens_helper(f, &node.gt_token.spans)),
-+ gt_token: Token ! [>](tokens_helper(f, &node.gt_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_arm<F>(f: &mut F, node: Arm) -> Arm
- where
- F: Fold + ?Sized,
- {
- Arm {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- pat: f.fold_pat(node.pat),
- guard: (node.guard).map(|it| {
- (
- Token.0.span)),
- Box::new(f.fold_expr(*(it).1)),
- )
- }),
-- fat_arrow_token: Token ! [ => ](tokens_helper(f, &node.fat_arrow_token.spans)),
-+ fat_arrow_token: Token ! [=>](tokens_helper(f, &node.fat_arrow_token.spans)),
- body: Box::new(f.fold_expr(*node.body)),
-- comma: (node.comma).map(|it| Token ! [ , ](tokens_helper(f, &it.spans))),
-+ comma: (node.comma).map(|it| Token ! [,](tokens_helper(f, &it.spans))),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_attr_style<F>(f: &mut F, node: AttrStyle) -> AttrStyle
- where
- F: Fold + ?Sized,
- {
- match node {
-@@ -837,109 +830,97 @@ where
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_attribute<F>(f: &mut F, node: Attribute) -> Attribute
- where
- F: Fold + ?Sized,
- {
- Attribute {
-- pound_token: Token ! [ # ](tokens_helper(f, &node.pound_token.spans)),
-+ pound_token: Token ! [#](tokens_helper(f, &node.pound_token.spans)),
- style: f.fold_attr_style(node.style),
- bracket_token: Bracket(tokens_helper(f, &node.bracket_token.span)),
- path: f.fold_path(node.path),
- tokens: node.tokens,
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_bare_fn_arg<F>(f: &mut F, node: BareFnArg) -> BareFnArg
- where
- F: Fold + ?Sized,
- {
- BareFnArg {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- name: (node.name).map(|it| {
- (
- f.fold_ident((it).0),
-- Token ! [ : ](tokens_helper(f, &(it).1.spans)),
-+ Token ! [:](tokens_helper(f, &(it).1.spans)),
- )
- }),
- ty: f.fold_type(node.ty),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_bin_op<F>(f: &mut F, node: BinOp) -> BinOp
- where
- F: Fold + ?Sized,
- {
- match node {
-- BinOp::Add(_binding_0) => BinOp::Add(Token ! [ + ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::Sub(_binding_0) => BinOp::Sub(Token ! [ - ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::Mul(_binding_0) => BinOp::Mul(Token ! [ * ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::Div(_binding_0) => BinOp::Div(Token ! [ / ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::Rem(_binding_0) => BinOp::Rem(Token ! [ % ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::And(_binding_0) => BinOp::And(Token ! [ && ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::Or(_binding_0) => BinOp::Or(Token ! [ || ](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Add(_binding_0) => BinOp::Add(Token ! [+](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Sub(_binding_0) => BinOp::Sub(Token ! [-](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Mul(_binding_0) => BinOp::Mul(Token ! [*](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Div(_binding_0) => BinOp::Div(Token ! [/](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Rem(_binding_0) => BinOp::Rem(Token ! [%](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::And(_binding_0) => BinOp::And(Token ! [&&](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Or(_binding_0) => BinOp::Or(Token ! [||](tokens_helper(f, &_binding_0.spans))),
- BinOp::BitXor(_binding_0) => {
-- BinOp::BitXor(Token ! [ ^ ](tokens_helper(f, &_binding_0.spans)))
-+ BinOp::BitXor(Token ! [^](tokens_helper(f, &_binding_0.spans)))
- }
- BinOp::BitAnd(_binding_0) => {
-- BinOp::BitAnd(Token ! [ & ](tokens_helper(f, &_binding_0.spans)))
-- }
-- BinOp::BitOr(_binding_0) => {
-- BinOp::BitOr(Token ! [ | ](tokens_helper(f, &_binding_0.spans)))
-+ BinOp::BitAnd(Token ! [&](tokens_helper(f, &_binding_0.spans)))
- }
-- BinOp::Shl(_binding_0) => BinOp::Shl(Token ! [ << ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::Shr(_binding_0) => BinOp::Shr(Token ! [ >> ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::Eq(_binding_0) => BinOp::Eq(Token ! [ == ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::Lt(_binding_0) => BinOp::Lt(Token ! [ < ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::Le(_binding_0) => BinOp::Le(Token ! [ <= ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::Ne(_binding_0) => BinOp::Ne(Token ! [ != ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::Ge(_binding_0) => BinOp::Ge(Token ! [ >= ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::Gt(_binding_0) => BinOp::Gt(Token ! [ > ](tokens_helper(f, &_binding_0.spans))),
-- BinOp::AddEq(_binding_0) => {
-- BinOp::AddEq(Token ! [ += ](tokens_helper(f, &_binding_0.spans)))
-- }
-- BinOp::SubEq(_binding_0) => {
-- BinOp::SubEq(Token ! [ -= ](tokens_helper(f, &_binding_0.spans)))
-- }
-- BinOp::MulEq(_binding_0) => {
-- BinOp::MulEq(Token ! [ *= ](tokens_helper(f, &_binding_0.spans)))
-- }
-- BinOp::DivEq(_binding_0) => {
-- BinOp::DivEq(Token ! [ /= ](tokens_helper(f, &_binding_0.spans)))
-- }
-- BinOp::RemEq(_binding_0) => {
-- BinOp::RemEq(Token ! [ %= ](tokens_helper(f, &_binding_0.spans)))
-- }
-+ BinOp::BitOr(_binding_0) => BinOp::BitOr(Token ! [|](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Shl(_binding_0) => BinOp::Shl(Token ! [<<](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Shr(_binding_0) => BinOp::Shr(Token ! [>>](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Eq(_binding_0) => BinOp::Eq(Token ! [==](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Lt(_binding_0) => BinOp::Lt(Token ! [<](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Le(_binding_0) => BinOp::Le(Token ! [<=](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Ne(_binding_0) => BinOp::Ne(Token ! [!=](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Ge(_binding_0) => BinOp::Ge(Token ! [>=](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::Gt(_binding_0) => BinOp::Gt(Token ! [>](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::AddEq(_binding_0) => BinOp::AddEq(Token ! [+=](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::SubEq(_binding_0) => BinOp::SubEq(Token ! [-=](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::MulEq(_binding_0) => BinOp::MulEq(Token ! [*=](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::DivEq(_binding_0) => BinOp::DivEq(Token ! [/=](tokens_helper(f, &_binding_0.spans))),
-+ BinOp::RemEq(_binding_0) => BinOp::RemEq(Token ! [%=](tokens_helper(f, &_binding_0.spans))),
- BinOp::BitXorEq(_binding_0) => {
-- BinOp::BitXorEq(Token ! [ ^= ](tokens_helper(f, &_binding_0.spans)))
-+ BinOp::BitXorEq(Token ! [^=](tokens_helper(f, &_binding_0.spans)))
- }
- BinOp::BitAndEq(_binding_0) => {
-- BinOp::BitAndEq(Token ! [ &= ](tokens_helper(f, &_binding_0.spans)))
-+ BinOp::BitAndEq(Token ! [&=](tokens_helper(f, &_binding_0.spans)))
- }
- BinOp::BitOrEq(_binding_0) => {
-- BinOp::BitOrEq(Token ! [ |= ](tokens_helper(f, &_binding_0.spans)))
-+ BinOp::BitOrEq(Token ! [|=](tokens_helper(f, &_binding_0.spans)))
- }
- BinOp::ShlEq(_binding_0) => {
-- BinOp::ShlEq(Token ! [ <<= ](tokens_helper(f, &_binding_0.spans)))
-+ BinOp::ShlEq(Token ! [<<=](tokens_helper(f, &_binding_0.spans)))
- }
- BinOp::ShrEq(_binding_0) => {
-- BinOp::ShrEq(Token ! [ >>= ](tokens_helper(f, &_binding_0.spans)))
-+ BinOp::ShrEq(Token ! [>>=](tokens_helper(f, &_binding_0.spans)))
- }
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_binding<F>(f: &mut F, node: Binding) -> Binding
- where
- F: Fold + ?Sized,
- {
- Binding {
- ident: f.fold_ident(node.ident),
-- eq_token: Token ! [ = ](tokens_helper(f, &node.eq_token.spans)),
-+ eq_token: Token ! [=](tokens_helper(f, &node.eq_token.spans)),
- ty: f.fold_type(node.ty),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_block<F>(f: &mut F, node: Block) -> Block
- where
- F: Fold + ?Sized,
- {
-@@ -950,44 +931,44 @@ where
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_bound_lifetimes<F>(f: &mut F, node: BoundLifetimes) -> BoundLifetimes
- where
- F: Fold + ?Sized,
- {
- BoundLifetimes {
- for_token: Token),
-- lt_token: Token ! [ < ](tokens_helper(f, &node.lt_token.spans)),
-+ lt_token: Token ! [<](tokens_helper(f, &node.lt_token.spans)),
- lifetimes: FoldHelper::lift(node.lifetimes, |it| f.fold_lifetime_def(it)),
-- gt_token: Token ! [ > ](tokens_helper(f, &node.gt_token.spans)),
-+ gt_token: Token ! [>](tokens_helper(f, &node.gt_token.spans)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_const_param<F>(f: &mut F, node: ConstParam) -> ConstParam
- where
- F: Fold + ?Sized,
- {
- ConstParam {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- const_token: Token),
- ident: f.fold_ident(node.ident),
-- colon_token: Token ! [ : ](tokens_helper(f, &node.colon_token.spans)),
-+ colon_token: Token ! [:](tokens_helper(f, &node.colon_token.spans)),
- ty: f.fold_type(node.ty),
-- eq_token: (node.eq_token).map(|it| Token ! [ = ](tokens_helper(f, &it.spans))),
-+ eq_token: (node.eq_token).map(|it| Token ! [=](tokens_helper(f, &it.spans))),
- default: (node.default).map(|it| f.fold_expr(it)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_constraint<F>(f: &mut F, node: Constraint) -> Constraint
- where
- F: Fold + ?Sized,
- {
- Constraint {
- ident: f.fold_ident(node.ident),
-- colon_token: Token ! [ : ](tokens_helper(f, &node.colon_token.spans)),
-+ colon_token: Token ! [:](tokens_helper(f, &node.colon_token.spans)),
- bounds: FoldHelper::lift(node.bounds, |it| f.fold_type_param_bound(it)),
- }
- }
- #[cfg(feature = "derive")]
- pub fn fold_data<F>(f: &mut F, node: Data) -> Data
- where
- F: Fold + ?Sized,
- {
-@@ -1011,17 +992,17 @@ where
- #[cfg(feature = "derive")]
- pub fn fold_data_struct<F>(f: &mut F, node: DataStruct) -> DataStruct
- where
- F: Fold + ?Sized,
- {
- DataStruct {
- struct_token: Token),
- fields: f.fold_fields(node.fields),
-- semi_token: (node.semi_token).map(|it| Token ! [ ; ](tokens_helper(f, &it.spans))),
-+ semi_token: (node.semi_token).map(|it| Token ! [;](tokens_helper(f, &it.spans))),
- }
- }
- #[cfg(feature = "derive")]
- pub fn fold_data_union<F>(f: &mut F, node: DataUnion) -> DataUnion
- where
- F: Fold + ?Sized,
- {
- DataUnion {
-@@ -1107,17 +1088,17 @@ where
- #[cfg(feature = "full")]
- pub fn fold_expr_assign<F>(f: &mut F, node: ExprAssign) -> ExprAssign
- where
- F: Fold + ?Sized,
- {
- ExprAssign {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- left: Box::new(f.fold_expr(*node.left)),
-- eq_token: Token ! [ = ](tokens_helper(f, &node.eq_token.spans)),
-+ eq_token: Token ! [=](tokens_helper(f, &node.eq_token.spans)),
- right: Box::new(f.fold_expr(*node.right)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_expr_assign_op<F>(f: &mut F, node: ExprAssignOp) -> ExprAssignOp
- where
- F: Fold + ?Sized,
- {
-@@ -1143,17 +1124,17 @@ where
- #[cfg(feature = "full")]
- pub fn fold_expr_await<F>(f: &mut F, node: ExprAwait) -> ExprAwait
- where
- F: Fold + ?Sized,
- {
- ExprAwait {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- base: Box::new(f.fold_expr(*node.base)),
-- dot_token: Token ! [ . ](tokens_helper(f, &node.dot_token.spans)),
-+ dot_token: Token ! [.](tokens_helper(f, &node.dot_token.spans)),
- await_token: crate::token::Await(tokens_helper(f, &node.await_token.span)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_expr_binary<F>(f: &mut F, node: ExprBinary) -> ExprBinary
- where
- F: Fold + ?Sized,
- {
-@@ -1227,19 +1208,19 @@ pub fn fold_expr_closure<F>(f: &mut F, n
- where
- F: Fold + ?Sized,
- {
- ExprClosure {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- asyncness: (node.asyncness).map(|it| Token)),
- movability: (node.movability).map(|it| Token)),
- capture: (node.capture).map(|it| Token)),
-- or1_token: Token ! [ | ](tokens_helper(f, &node.or1_token.spans)),
-+ or1_token: Token ! [|](tokens_helper(f, &node.or1_token.spans)),
- inputs: FoldHelper::lift(node.inputs, |it| f.fold_pat(it)),
-- or2_token: Token ! [ | ](tokens_helper(f, &node.or2_token.spans)),
-+ or2_token: Token ! [|](tokens_helper(f, &node.or2_token.spans)),
- output: f.fold_return_type(node.output),
- body: Box::new(f.fold_expr(*node.body)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_expr_continue<F>(f: &mut F, node: ExprContinue) -> ExprContinue
- where
- F: Fold + ?Sized,
-@@ -1253,17 +1234,17 @@ where
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_expr_field<F>(f: &mut F, node: ExprField) -> ExprField
- where
- F: Fold + ?Sized,
- {
- ExprField {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- base: Box::new(f.fold_expr(*node.base)),
-- dot_token: Token ! [ . ](tokens_helper(f, &node.dot_token.spans)),
-+ dot_token: Token ! [.](tokens_helper(f, &node.dot_token.spans)),
- member: f.fold_member(node.member),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_expr_for_loop<F>(f: &mut F, node: ExprForLoop) -> ExprForLoop
- where
- F: Fold + ?Sized,
- {
-@@ -1322,17 +1303,17 @@ where
- pub fn fold_expr_let<F>(f: &mut F, node: ExprLet) -> ExprLet
- where
- F: Fold + ?Sized,
- {
- ExprLet {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- let_token: Token),
- pat: f.fold_pat(node.pat),
-- eq_token: Token ! [ = ](tokens_helper(f, &node.eq_token.spans)),
-+ eq_token: Token ! [=](tokens_helper(f, &node.eq_token.spans)),
- expr: Box::new(f.fold_expr(*node.expr)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_expr_lit<F>(f: &mut F, node: ExprLit) -> ExprLit
- where
- F: Fold + ?Sized,
- {
-@@ -1379,17 +1360,17 @@ where
- #[cfg(feature = "full")]
- pub fn fold_expr_method_call<F>(f: &mut F, node: ExprMethodCall) -> ExprMethodCall
- where
- F: Fold + ?Sized,
- {
- ExprMethodCall {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- receiver: Box::new(f.fold_expr(*node.receiver)),
-- dot_token: Token ! [ . ](tokens_helper(f, &node.dot_token.spans)),
-+ dot_token: Token ! [.](tokens_helper(f, &node.dot_token.spans)),
- method: f.fold_ident(node.method),
- turbofish: (node.turbofish).map(|it| f.fold_method_turbofish(it)),
- paren_token: Paren(tokens_helper(f, &node.paren_token.span)),
- args: FoldHelper::lift(node.args, |it| f.fold_expr(it)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_expr_paren<F>(f: &mut F, node: ExprParen) -> ExprParen
-@@ -1427,32 +1408,32 @@ where
- }
- #[cfg(feature = "full")]
- pub fn fold_expr_reference<F>(f: &mut F, node: ExprReference) -> ExprReference
- where
- F: Fold + ?Sized,
- {
- ExprReference {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-- and_token: Token ! [ & ](tokens_helper(f, &node.and_token.spans)),
-+ and_token: Token ! [&](tokens_helper(f, &node.and_token.spans)),
- raw: node.raw,
- mutability: (node.mutability).map(|it| Token)),
- expr: Box::new(f.fold_expr(*node.expr)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_expr_repeat<F>(f: &mut F, node: ExprRepeat) -> ExprRepeat
- where
- F: Fold + ?Sized,
- {
- ExprRepeat {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- bracket_token: Bracket(tokens_helper(f, &node.bracket_token.span)),
- expr: Box::new(f.fold_expr(*node.expr)),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- len: Box::new(f.fold_expr(*node.len)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_expr_return<F>(f: &mut F, node: ExprReturn) -> ExprReturn
- where
- F: Fold + ?Sized,
- {
-@@ -1479,17 +1460,17 @@ where
- #[cfg(feature = "full")]
- pub fn fold_expr_try<F>(f: &mut F, node: ExprTry) -> ExprTry
- where
- F: Fold + ?Sized,
- {
- ExprTry {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- expr: Box::new(f.fold_expr(*node.expr)),
-- question_token: Token ! [ ? ](tokens_helper(f, &node.question_token.spans)),
-+ question_token: Token ! [?](tokens_helper(f, &node.question_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_expr_try_block<F>(f: &mut F, node: ExprTryBlock) -> ExprTryBlock
- where
- F: Fold + ?Sized,
- {
- ExprTryBlock {
-@@ -1512,17 +1493,17 @@ where
- #[cfg(feature = "full")]
- pub fn fold_expr_type<F>(f: &mut F, node: ExprType) -> ExprType
- where
- F: Fold + ?Sized,
- {
- ExprType {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- expr: Box::new(f.fold_expr(*node.expr)),
-- colon_token: Token ! [ : ](tokens_helper(f, &node.colon_token.spans)),
-+ colon_token: Token ! [:](tokens_helper(f, &node.colon_token.spans)),
- ty: Box::new(f.fold_type(*node.ty)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_expr_unary<F>(f: &mut F, node: ExprUnary) -> ExprUnary
- where
- F: Fold + ?Sized,
- {
-@@ -1571,41 +1552,41 @@ where
- pub fn fold_field<F>(f: &mut F, node: Field) -> Field
- where
- F: Fold + ?Sized,
- {
- Field {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- ident: (node.ident).map(|it| f.fold_ident(it)),
-- colon_token: (node.colon_token).map(|it| Token ! [ : ](tokens_helper(f, &it.spans))),
-+ colon_token: (node.colon_token).map(|it| Token ! [:](tokens_helper(f, &it.spans))),
- ty: f.fold_type(node.ty),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_field_pat<F>(f: &mut F, node: FieldPat) -> FieldPat
- where
- F: Fold + ?Sized,
- {
- FieldPat {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- member: f.fold_member(node.member),
-- colon_token: (node.colon_token).map(|it| Token ! [ : ](tokens_helper(f, &it.spans))),
-+ colon_token: (node.colon_token).map(|it| Token ! [:](tokens_helper(f, &it.spans))),
- pat: Box::new(f.fold_pat(*node.pat)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_field_value<F>(f: &mut F, node: FieldValue) -> FieldValue
- where
- F: Fold + ?Sized,
- {
- FieldValue {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- member: f.fold_member(node.member),
-- colon_token: (node.colon_token).map(|it| Token ! [ : ](tokens_helper(f, &it.spans))),
-+ colon_token: (node.colon_token).map(|it| Token ! [:](tokens_helper(f, &it.spans))),
- expr: f.fold_expr(node.expr),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_fields<F>(f: &mut F, node: Fields) -> Fields
- where
- F: Fold + ?Sized,
- {
-@@ -1676,57 +1657,57 @@ where
- pub fn fold_foreign_item_fn<F>(f: &mut F, node: ForeignItemFn) -> ForeignItemFn
- where
- F: Fold + ?Sized,
- {
- ForeignItemFn {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- sig: f.fold_signature(node.sig),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_foreign_item_macro<F>(f: &mut F, node: ForeignItemMacro) -> ForeignItemMacro
- where
- F: Fold + ?Sized,
- {
- ForeignItemMacro {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- mac: f.fold_macro(node.mac),
-- semi_token: (node.semi_token).map(|it| Token ! [ ; ](tokens_helper(f, &it.spans))),
-+ semi_token: (node.semi_token).map(|it| Token ! [;](tokens_helper(f, &it.spans))),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_foreign_item_static<F>(f: &mut F, node: ForeignItemStatic) -> ForeignItemStatic
- where
- F: Fold + ?Sized,
- {
- ForeignItemStatic {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- static_token: Token),
- mutability: (node.mutability).map(|it| Token)),
- ident: f.fold_ident(node.ident),
-- colon_token: Token ! [ : ](tokens_helper(f, &node.colon_token.spans)),
-+ colon_token: Token ! [:](tokens_helper(f, &node.colon_token.spans)),
- ty: Box::new(f.fold_type(*node.ty)),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_foreign_item_type<F>(f: &mut F, node: ForeignItemType) -> ForeignItemType
- where
- F: Fold + ?Sized,
- {
- ForeignItemType {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- type_token: Token),
- ident: f.fold_ident(node.ident),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_generic_argument<F>(f: &mut F, node: GenericArgument) -> GenericArgument
- where
- F: Fold + ?Sized,
- {
- match node {
-@@ -1774,19 +1755,19 @@ where
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_generics<F>(f: &mut F, node: Generics) -> Generics
- where
- F: Fold + ?Sized,
- {
- Generics {
-- lt_token: (node.lt_token).map(|it| Token ! [ < ](tokens_helper(f, &it.spans))),
-+ lt_token: (node.lt_token).map(|it| Token ! [<](tokens_helper(f, &it.spans))),
- params: FoldHelper::lift(node.params, |it| f.fold_generic_param(it)),
-- gt_token: (node.gt_token).map(|it| Token ! [ > ](tokens_helper(f, &it.spans))),
-+ gt_token: (node.gt_token).map(|it| Token ! [>](tokens_helper(f, &it.spans))),
- where_clause: (node.where_clause).map(|it| f.fold_where_clause(it)),
- }
- }
- pub fn fold_ident<F>(f: &mut F, node: Ident) -> Ident
- where
- F: Fold + ?Sized,
- {
- let mut node = node;
-@@ -1814,32 +1795,32 @@ where
- F: Fold + ?Sized,
- {
- ImplItemConst {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- defaultness: (node.defaultness).map(|it| Token)),
- const_token: Token),
- ident: f.fold_ident(node.ident),
-- colon_token: Token ! [ : ](tokens_helper(f, &node.colon_token.spans)),
-+ colon_token: Token ! [:](tokens_helper(f, &node.colon_token.spans)),
- ty: f.fold_type(node.ty),
-- eq_token: Token ! [ = ](tokens_helper(f, &node.eq_token.spans)),
-+ eq_token: Token ! [=](tokens_helper(f, &node.eq_token.spans)),
- expr: f.fold_expr(node.expr),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_impl_item_macro<F>(f: &mut F, node: ImplItemMacro) -> ImplItemMacro
- where
- F: Fold + ?Sized,
- {
- ImplItemMacro {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- mac: f.fold_macro(node.mac),
-- semi_token: (node.semi_token).map(|it| Token ! [ ; ](tokens_helper(f, &it.spans))),
-+ semi_token: (node.semi_token).map(|it| Token ! [;](tokens_helper(f, &it.spans))),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_impl_item_method<F>(f: &mut F, node: ImplItemMethod) -> ImplItemMethod
- where
- F: Fold + ?Sized,
- {
- ImplItemMethod {
-@@ -1857,19 +1838,19 @@ where
- {
- ImplItemType {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- defaultness: (node.defaultness).map(|it| Token)),
- type_token: Token),
- ident: f.fold_ident(node.ident),
- generics: f.fold_generics(node.generics),
-- eq_token: Token ! [ = ](tokens_helper(f, &node.eq_token.spans)),
-+ eq_token: Token ! [=](tokens_helper(f, &node.eq_token.spans)),
- ty: f.fold_type(node.ty),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_index<F>(f: &mut F, node: Index) -> Index
- where
- F: Fold + ?Sized,
- {
- Index {
-@@ -1908,21 +1889,21 @@ pub fn fold_item_const<F>(f: &mut F, nod
- where
- F: Fold + ?Sized,
- {
- ItemConst {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- const_token: Token),
- ident: f.fold_ident(node.ident),
-- colon_token: Token ! [ : ](tokens_helper(f, &node.colon_token.spans)),
-+ colon_token: Token ! [:](tokens_helper(f, &node.colon_token.spans)),
- ty: Box::new(f.fold_type(*node.ty)),
-- eq_token: Token ! [ = ](tokens_helper(f, &node.eq_token.spans)),
-+ eq_token: Token ! [=](tokens_helper(f, &node.eq_token.spans)),
- expr: Box::new(f.fold_expr(*node.expr)),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_item_enum<F>(f: &mut F, node: ItemEnum) -> ItemEnum
- where
- F: Fold + ?Sized,
- {
- ItemEnum {
-@@ -1947,17 +1928,17 @@ where
- crate_token: Token),
- ident: f.fold_ident(node.ident),
- rename: (node.rename).map(|it| {
- (
- Token.0.span)),
- f.fold_ident((it).1),
- )
- }),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_item_fn<F>(f: &mut F, node: ItemFn) -> ItemFn
- where
- F: Fold + ?Sized,
- {
- ItemFn {
-@@ -2006,17 +1987,17 @@ where
- pub fn fold_item_macro<F>(f: &mut F, node: ItemMacro) -> ItemMacro
- where
- F: Fold + ?Sized,
- {
- ItemMacro {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- ident: (node.ident).map(|it| f.fold_ident(it)),
- mac: f.fold_macro(node.mac),
-- semi_token: (node.semi_token).map(|it| Token ! [ ; ](tokens_helper(f, &it.spans))),
-+ semi_token: (node.semi_token).map(|it| Token ! [;](tokens_helper(f, &it.spans))),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_item_macro2<F>(f: &mut F, node: ItemMacro2) -> ItemMacro2
- where
- F: Fold + ?Sized,
- {
- ItemMacro2 {
-@@ -2038,101 +2019,101 @@ where
- mod_token: Token),
- ident: f.fold_ident(node.ident),
- content: (node.content).map(|it| {
- (
- Brace(tokens_helper(f, &(it).0.span)),
- FoldHelper::lift((it).1, |it| f.fold_item(it)),
- )
- }),
-- semi: (node.semi).map(|it| Token ! [ ; ](tokens_helper(f, &it.spans))),
-+ semi: (node.semi).map(|it| Token ! [;](tokens_helper(f, &it.spans))),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_item_static<F>(f: &mut F, node: ItemStatic) -> ItemStatic
- where
- F: Fold + ?Sized,
- {
- ItemStatic {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- static_token: Token),
- mutability: (node.mutability).map(|it| Token)),
- ident: f.fold_ident(node.ident),
-- colon_token: Token ! [ : ](tokens_helper(f, &node.colon_token.spans)),
-+ colon_token: Token ! [:](tokens_helper(f, &node.colon_token.spans)),
- ty: Box::new(f.fold_type(*node.ty)),
-- eq_token: Token ! [ = ](tokens_helper(f, &node.eq_token.spans)),
-+ eq_token: Token ! [=](tokens_helper(f, &node.eq_token.spans)),
- expr: Box::new(f.fold_expr(*node.expr)),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_item_struct<F>(f: &mut F, node: ItemStruct) -> ItemStruct
- where
- F: Fold + ?Sized,
- {
- ItemStruct {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- struct_token: Token),
- ident: f.fold_ident(node.ident),
- generics: f.fold_generics(node.generics),
- fields: f.fold_fields(node.fields),
-- semi_token: (node.semi_token).map(|it| Token ! [ ; ](tokens_helper(f, &it.spans))),
-+ semi_token: (node.semi_token).map(|it| Token ! [;](tokens_helper(f, &it.spans))),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_item_trait<F>(f: &mut F, node: ItemTrait) -> ItemTrait
- where
- F: Fold + ?Sized,
- {
- ItemTrait {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- unsafety: (node.unsafety).map(|it| Token)),
- auto_token: (node.auto_token).map(|it| Token)),
- trait_token: Token),
- ident: f.fold_ident(node.ident),
- generics: f.fold_generics(node.generics),
-- colon_token: (node.colon_token).map(|it| Token ! [ : ](tokens_helper(f, &it.spans))),
-+ colon_token: (node.colon_token).map(|it| Token ! [:](tokens_helper(f, &it.spans))),
- supertraits: FoldHelper::lift(node.supertraits, |it| f.fold_type_param_bound(it)),
- brace_token: Brace(tokens_helper(f, &node.brace_token.span)),
- items: FoldHelper::lift(node.items, |it| f.fold_trait_item(it)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_item_trait_alias<F>(f: &mut F, node: ItemTraitAlias) -> ItemTraitAlias
- where
- F: Fold + ?Sized,
- {
- ItemTraitAlias {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- trait_token: Token),
- ident: f.fold_ident(node.ident),
- generics: f.fold_generics(node.generics),
-- eq_token: Token ! [ = ](tokens_helper(f, &node.eq_token.spans)),
-+ eq_token: Token ! [=](tokens_helper(f, &node.eq_token.spans)),
- bounds: FoldHelper::lift(node.bounds, |it| f.fold_type_param_bound(it)),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_item_type<F>(f: &mut F, node: ItemType) -> ItemType
- where
- F: Fold + ?Sized,
- {
- ItemType {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- type_token: Token),
- ident: f.fold_ident(node.ident),
- generics: f.fold_generics(node.generics),
-- eq_token: Token ! [ = ](tokens_helper(f, &node.eq_token.spans)),
-+ eq_token: Token ! [=](tokens_helper(f, &node.eq_token.spans)),
- ty: Box::new(f.fold_type(*node.ty)),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_item_union<F>(f: &mut F, node: ItemUnion) -> ItemUnion
- where
- F: Fold + ?Sized,
- {
- ItemUnion {
-@@ -2148,29 +2129,29 @@ where
- pub fn fold_item_use<F>(f: &mut F, node: ItemUse) -> ItemUse
- where
- F: Fold + ?Sized,
- {
- ItemUse {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- vis: f.fold_visibility(node.vis),
- use_token: Token),
-- leading_colon: (node.leading_colon).map(|it| Token ! [ :: ](tokens_helper(f, &it.spans))),
-+ leading_colon: (node.leading_colon).map(|it| Token ! [::](tokens_helper(f, &it.spans))),
- tree: f.fold_use_tree(node.tree),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_label<F>(f: &mut F, node: Label) -> Label
- where
- F: Fold + ?Sized,
- {
- Label {
- name: f.fold_lifetime(node.name),
-- colon_token: Token ! [ : ](tokens_helper(f, &node.colon_token.spans)),
-+ colon_token: Token ! [:](tokens_helper(f, &node.colon_token.spans)),
- }
- }
- pub fn fold_lifetime<F>(f: &mut F, node: Lifetime) -> Lifetime
- where
- F: Fold + ?Sized,
- {
- Lifetime {
- apostrophe: f.fold_span(node.apostrophe),
-@@ -2180,97 +2161,89 @@ where
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_lifetime_def<F>(f: &mut F, node: LifetimeDef) -> LifetimeDef
- where
- F: Fold + ?Sized,
- {
- LifetimeDef {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- lifetime: f.fold_lifetime(node.lifetime),
-- colon_token: (node.colon_token).map(|it| Token ! [ : ](tokens_helper(f, &it.spans))),
-+ colon_token: (node.colon_token).map(|it| Token ! [:](tokens_helper(f, &it.spans))),
- bounds: FoldHelper::lift(node.bounds, |it| f.fold_lifetime(it)),
- }
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_lit<F>(f: &mut F, node: Lit) -> Lit
- where
- F: Fold + ?Sized,
- {
- match node {
- Lit::Str(_binding_0) => Lit::Str(f.fold_lit_str(_binding_0)),
- Lit::ByteStr(_binding_0) => Lit::ByteStr(f.fold_lit_byte_str(_binding_0)),
- Lit::Byte(_binding_0) => Lit::Byte(f.fold_lit_byte(_binding_0)),
- Lit::Char(_binding_0) => Lit::Char(f.fold_lit_char(_binding_0)),
- Lit::Int(_binding_0) => Lit::Int(f.fold_lit_int(_binding_0)),
- Lit::Float(_binding_0) => Lit::Float(f.fold_lit_float(_binding_0)),
- Lit::Bool(_binding_0) => Lit::Bool(f.fold_lit_bool(_binding_0)),
- Lit::Verbatim(_binding_0) => Lit::Verbatim(_binding_0),
- }
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_lit_bool<F>(f: &mut F, node: LitBool) -> LitBool
- where
- F: Fold + ?Sized,
- {
- LitBool {
- value: node.value,
- span: f.fold_span(node.span),
- }
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_lit_byte<F>(f: &mut F, node: LitByte) -> LitByte
- where
- F: Fold + ?Sized,
- {
- let span = f.fold_span(node.span());
- let mut node = node;
- node.set_span(span);
- node
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_lit_byte_str<F>(f: &mut F, node: LitByteStr) -> LitByteStr
- where
- F: Fold + ?Sized,
- {
- let span = f.fold_span(node.span());
- let mut node = node;
- node.set_span(span);
- node
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_lit_char<F>(f: &mut F, node: LitChar) -> LitChar
- where
- F: Fold + ?Sized,
- {
- let span = f.fold_span(node.span());
- let mut node = node;
- node.set_span(span);
- node
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_lit_float<F>(f: &mut F, node: LitFloat) -> LitFloat
- where
- F: Fold + ?Sized,
- {
- let span = f.fold_span(node.span());
- let mut node = node;
- node.set_span(span);
- node
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_lit_int<F>(f: &mut F, node: LitInt) -> LitInt
- where
- F: Fold + ?Sized,
- {
- let span = f.fold_span(node.span());
- let mut node = node;
- node.set_span(span);
- node
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_lit_str<F>(f: &mut F, node: LitStr) -> LitStr
- where
- F: Fold + ?Sized,
- {
- let span = f.fold_span(node.span());
- let mut node = node;
- node.set_span(span);
- node
-@@ -2281,21 +2254,21 @@ where
- F: Fold + ?Sized,
- {
- Local {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- let_token: Token),
- pat: f.fold_pat(node.pat),
- init: (node.init).map(|it| {
- (
-- Token ! [ = ](tokens_helper(f, &(it).0.spans)),
-+ Token ! [=](tokens_helper(f, &(it).0.spans)),
- Box::new(f.fold_expr(*(it).1)),
- )
- }),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_macro<F>(f: &mut F, node: Macro) -> Macro
- where
- F: Fold + ?Sized,
- {
- Macro {
-@@ -2356,30 +2329,30 @@ where
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_meta_name_value<F>(f: &mut F, node: MetaNameValue) -> MetaNameValue
- where
- F: Fold + ?Sized,
- {
- MetaNameValue {
- path: f.fold_path(node.path),
-- eq_token: Token ! [ = ](tokens_helper(f, &node.eq_token.spans)),
-+ eq_token: Token ! [=](tokens_helper(f, &node.eq_token.spans)),
- lit: f.fold_lit(node.lit),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_method_turbofish<F>(f: &mut F, node: MethodTurbofish) -> MethodTurbofish
- where
- F: Fold + ?Sized,
- {
- MethodTurbofish {
-- colon2_token: Token ! [ :: ](tokens_helper(f, &node.colon2_token.spans)),
-- lt_token: Token ! [ < ](tokens_helper(f, &node.lt_token.spans)),
-+ colon2_token: Token ! [::](tokens_helper(f, &node.colon2_token.spans)),
-+ lt_token: Token ! [<](tokens_helper(f, &node.lt_token.spans)),
- args: FoldHelper::lift(node.args, |it| f.fold_generic_method_argument(it)),
-- gt_token: Token ! [ > ](tokens_helper(f, &node.gt_token.spans)),
-+ gt_token: Token ! [>](tokens_helper(f, &node.gt_token.spans)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_nested_meta<F>(f: &mut F, node: NestedMeta) -> NestedMeta
- where
- F: Fold + ?Sized,
- {
- match node {
-@@ -2444,17 +2417,17 @@ where
- {
- PatIdent {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- by_ref: (node.by_ref).map(|it| Token)),
- mutability: (node.mutability).map(|it| Token)),
- ident: f.fold_ident(node.ident),
- subpat: (node.subpat).map(|it| {
- (
-- Token ! [ @ ](tokens_helper(f, &(it).0.spans)),
-+ Token ! [@](tokens_helper(f, &(it).0.spans)),
- Box::new(f.fold_pat(*(it).1)),
- )
- }),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_pat_lit<F>(f: &mut F, node: PatLit) -> PatLit
- where
-@@ -2477,17 +2450,17 @@ where
- }
- #[cfg(feature = "full")]
- pub fn fold_pat_or<F>(f: &mut F, node: PatOr) -> PatOr
- where
- F: Fold + ?Sized,
- {
- PatOr {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-- leading_vert: (node.leading_vert).map(|it| Token ! [ | ](tokens_helper(f, &it.spans))),
-+ leading_vert: (node.leading_vert).map(|it| Token ! [|](tokens_helper(f, &it.spans))),
- cases: FoldHelper::lift(node.cases, |it| f.fold_pat(it)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_pat_path<F>(f: &mut F, node: PatPath) -> PatPath
- where
- F: Fold + ?Sized,
- {
-@@ -2511,17 +2484,17 @@ where
- }
- #[cfg(feature = "full")]
- pub fn fold_pat_reference<F>(f: &mut F, node: PatReference) -> PatReference
- where
- F: Fold + ?Sized,
- {
- PatReference {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-- and_token: Token ! [ & ](tokens_helper(f, &node.and_token.spans)),
-+ and_token: Token ! [&](tokens_helper(f, &node.and_token.spans)),
- mutability: (node.mutability).map(|it| Token)),
- pat: Box::new(f.fold_pat(*node.pat)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_pat_rest<F>(f: &mut F, node: PatRest) -> PatRest
- where
- F: Fold + ?Sized,
-@@ -2580,17 +2553,17 @@ where
- #[cfg(feature = "full")]
- pub fn fold_pat_type<F>(f: &mut F, node: PatType) -> PatType
- where
- F: Fold + ?Sized,
- {
- PatType {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- pat: Box::new(f.fold_pat(*node.pat)),
-- colon_token: Token ! [ : ](tokens_helper(f, &node.colon_token.spans)),
-+ colon_token: Token ! [:](tokens_helper(f, &node.colon_token.spans)),
- ty: Box::new(f.fold_type(*node.ty)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_pat_wild<F>(f: &mut F, node: PatWild) -> PatWild
- where
- F: Fold + ?Sized,
- {
-@@ -2600,17 +2573,17 @@ where
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_path<F>(f: &mut F, node: Path) -> Path
- where
- F: Fold + ?Sized,
- {
- Path {
-- leading_colon: (node.leading_colon).map(|it| Token ! [ :: ](tokens_helper(f, &it.spans))),
-+ leading_colon: (node.leading_colon).map(|it| Token ! [::](tokens_helper(f, &it.spans))),
- segments: FoldHelper::lift(node.segments, |it| f.fold_path_segment(it)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_path_arguments<F>(f: &mut F, node: PathArguments) -> PathArguments
- where
- F: Fold + ?Sized,
- {
-@@ -2636,96 +2609,96 @@ where
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_predicate_eq<F>(f: &mut F, node: PredicateEq) -> PredicateEq
- where
- F: Fold + ?Sized,
- {
- PredicateEq {
- lhs_ty: f.fold_type(node.lhs_ty),
-- eq_token: Token ! [ = ](tokens_helper(f, &node.eq_token.spans)),
-+ eq_token: Token ! [=](tokens_helper(f, &node.eq_token.spans)),
- rhs_ty: f.fold_type(node.rhs_ty),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_predicate_lifetime<F>(f: &mut F, node: PredicateLifetime) -> PredicateLifetime
- where
- F: Fold + ?Sized,
- {
- PredicateLifetime {
- lifetime: f.fold_lifetime(node.lifetime),
-- colon_token: Token ! [ : ](tokens_helper(f, &node.colon_token.spans)),
-+ colon_token: Token ! [:](tokens_helper(f, &node.colon_token.spans)),
- bounds: FoldHelper::lift(node.bounds, |it| f.fold_lifetime(it)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_predicate_type<F>(f: &mut F, node: PredicateType) -> PredicateType
- where
- F: Fold + ?Sized,
- {
- PredicateType {
- lifetimes: (node.lifetimes).map(|it| f.fold_bound_lifetimes(it)),
- bounded_ty: f.fold_type(node.bounded_ty),
-- colon_token: Token ! [ : ](tokens_helper(f, &node.colon_token.spans)),
-+ colon_token: Token ! [:](tokens_helper(f, &node.colon_token.spans)),
- bounds: FoldHelper::lift(node.bounds, |it| f.fold_type_param_bound(it)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_qself<F>(f: &mut F, node: QSelf) -> QSelf
- where
- F: Fold + ?Sized,
- {
- QSelf {
-- lt_token: Token ! [ < ](tokens_helper(f, &node.lt_token.spans)),
-+ lt_token: Token ! [<](tokens_helper(f, &node.lt_token.spans)),
- ty: Box::new(f.fold_type(*node.ty)),
- position: node.position,
- as_token: (node.as_token).map(|it| Token)),
-- gt_token: Token ! [ > ](tokens_helper(f, &node.gt_token.spans)),
-+ gt_token: Token ! [>](tokens_helper(f, &node.gt_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_range_limits<F>(f: &mut F, node: RangeLimits) -> RangeLimits
- where
- F: Fold + ?Sized,
- {
- match node {
- RangeLimits::HalfOpen(_binding_0) => {
- RangeLimits::HalfOpen(Token))
- }
- RangeLimits::Closed(_binding_0) => {
-- RangeLimits::Closed(Token ! [ ..= ](tokens_helper(f, &_binding_0.spans)))
-+ RangeLimits::Closed(Token ! [..=](tokens_helper(f, &_binding_0.spans)))
- }
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_receiver<F>(f: &mut F, node: Receiver) -> Receiver
- where
- F: Fold + ?Sized,
- {
- Receiver {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- reference: (node.reference).map(|it| {
- (
-- Token ! [ & ](tokens_helper(f, &(it).0.spans)),
-+ Token ! [&](tokens_helper(f, &(it).0.spans)),
- ((it).1).map(|it| f.fold_lifetime(it)),
- )
- }),
- mutability: (node.mutability).map(|it| Token)),
- self_token: Token),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_return_type<F>(f: &mut F, node: ReturnType) -> ReturnType
- where
- F: Fold + ?Sized,
- {
- match node {
- ReturnType::Default => ReturnType::Default,
- ReturnType::Type(_binding_0, _binding_1) => ReturnType::Type(
-- Token ! [ -> ](tokens_helper(f, &_binding_0.spans)),
-+ Token ! [->](tokens_helper(f, &_binding_0.spans)),
- Box::new(f.fold_type(*_binding_1)),
- ),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_signature<F>(f: &mut F, node: Signature) -> Signature
- where
- F: Fold + ?Sized,
-@@ -2756,17 +2729,17 @@ where
- F: Fold + ?Sized,
- {
- match node {
- Stmt::Local(_binding_0) => Stmt::Local(f.fold_local(_binding_0)),
- Stmt::Item(_binding_0) => Stmt::Item(f.fold_item(_binding_0)),
- Stmt::Expr(_binding_0) => Stmt::Expr(f.fold_expr(_binding_0)),
- Stmt::Semi(_binding_0, _binding_1) => Stmt::Semi(
- f.fold_expr(_binding_0),
-- Token ! [ ; ](tokens_helper(f, &_binding_1.spans)),
-+ Token ! [;](tokens_helper(f, &_binding_1.spans)),
- ),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_trait_bound<F>(f: &mut F, node: TraitBound) -> TraitBound
- where
- F: Fold + ?Sized,
- {
-@@ -2780,17 +2753,17 @@ where
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_trait_bound_modifier<F>(f: &mut F, node: TraitBoundModifier) -> TraitBoundModifier
- where
- F: Fold + ?Sized,
- {
- match node {
- TraitBoundModifier::None => TraitBoundModifier::None,
- TraitBoundModifier::Maybe(_binding_0) => {
-- TraitBoundModifier::Maybe(Token ! [ ? ](tokens_helper(f, &_binding_0.spans)))
-+ TraitBoundModifier::Maybe(Token ! [?](tokens_helper(f, &_binding_0.spans)))
- }
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_trait_item<F>(f: &mut F, node: TraitItem) -> TraitItem
- where
- F: Fold + ?Sized,
- {
-@@ -2807,69 +2780,69 @@ where
- pub fn fold_trait_item_const<F>(f: &mut F, node: TraitItemConst) -> TraitItemConst
- where
- F: Fold + ?Sized,
- {
- TraitItemConst {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- const_token: Token),
- ident: f.fold_ident(node.ident),
-- colon_token: Token ! [ : ](tokens_helper(f, &node.colon_token.spans)),
-+ colon_token: Token ! [:](tokens_helper(f, &node.colon_token.spans)),
- ty: f.fold_type(node.ty),
- default: (node.default).map(|it| {
- (
-- Token ! [ = ](tokens_helper(f, &(it).0.spans)),
-+ Token ! [=](tokens_helper(f, &(it).0.spans)),
- f.fold_expr((it).1),
- )
- }),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_trait_item_macro<F>(f: &mut F, node: TraitItemMacro) -> TraitItemMacro
- where
- F: Fold + ?Sized,
- {
- TraitItemMacro {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- mac: f.fold_macro(node.mac),
-- semi_token: (node.semi_token).map(|it| Token ! [ ; ](tokens_helper(f, &it.spans))),
-+ semi_token: (node.semi_token).map(|it| Token ! [;](tokens_helper(f, &it.spans))),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_trait_item_method<F>(f: &mut F, node: TraitItemMethod) -> TraitItemMethod
- where
- F: Fold + ?Sized,
- {
- TraitItemMethod {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- sig: f.fold_signature(node.sig),
- default: (node.default).map(|it| f.fold_block(it)),
-- semi_token: (node.semi_token).map(|it| Token ! [ ; ](tokens_helper(f, &it.spans))),
-+ semi_token: (node.semi_token).map(|it| Token ! [;](tokens_helper(f, &it.spans))),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_trait_item_type<F>(f: &mut F, node: TraitItemType) -> TraitItemType
- where
- F: Fold + ?Sized,
- {
- TraitItemType {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- type_token: Token),
- ident: f.fold_ident(node.ident),
- generics: f.fold_generics(node.generics),
-- colon_token: (node.colon_token).map(|it| Token ! [ : ](tokens_helper(f, &it.spans))),
-+ colon_token: (node.colon_token).map(|it| Token ! [:](tokens_helper(f, &it.spans))),
- bounds: FoldHelper::lift(node.bounds, |it| f.fold_type_param_bound(it)),
- default: (node.default).map(|it| {
- (
-- Token ! [ = ](tokens_helper(f, &(it).0.spans)),
-+ Token ! [=](tokens_helper(f, &(it).0.spans)),
- f.fold_type((it).1),
- )
- }),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_type<F>(f: &mut F, node: Type) -> Type
- where
- F: Fold + ?Sized,
- {
- match node {
-@@ -2894,17 +2867,17 @@ where
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_type_array<F>(f: &mut F, node: TypeArray) -> TypeArray
- where
- F: Fold + ?Sized,
- {
- TypeArray {
- bracket_token: Bracket(tokens_helper(f, &node.bracket_token.span)),
- elem: Box::new(f.fold_type(*node.elem)),
-- semi_token: Token ! [ ; ](tokens_helper(f, &node.semi_token.spans)),
-+ semi_token: Token ! [;](tokens_helper(f, &node.semi_token.spans)),
- len: f.fold_expr(node.len),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_type_bare_fn<F>(f: &mut F, node: TypeBareFn) -> TypeBareFn
- where
- F: Fold + ?Sized,
- {
-@@ -2969,19 +2942,19 @@ where
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_type_param<F>(f: &mut F, node: TypeParam) -> TypeParam
- where
- F: Fold + ?Sized,
- {
- TypeParam {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- ident: f.fold_ident(node.ident),
-- colon_token: (node.colon_token).map(|it| Token ! [ : ](tokens_helper(f, &it.spans))),
-+ colon_token: (node.colon_token).map(|it| Token ! [:](tokens_helper(f, &it.spans))),
- bounds: FoldHelper::lift(node.bounds, |it| f.fold_type_param_bound(it)),
-- eq_token: (node.eq_token).map(|it| Token ! [ = ](tokens_helper(f, &it.spans))),
-+ eq_token: (node.eq_token).map(|it| Token ! [=](tokens_helper(f, &it.spans))),
- default: (node.default).map(|it| f.fold_type(it)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_type_param_bound<F>(f: &mut F, node: TypeParamBound) -> TypeParamBound
- where
- F: Fold + ?Sized,
- {
-@@ -3013,29 +2986,29 @@ where
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_type_ptr<F>(f: &mut F, node: TypePtr) -> TypePtr
- where
- F: Fold + ?Sized,
- {
- TypePtr {
-- star_token: Token ! [ * ](tokens_helper(f, &node.star_token.spans)),
-+ star_token: Token ! [*](tokens_helper(f, &node.star_token.spans)),
- const_token: (node.const_token).map(|it| Token)),
- mutability: (node.mutability).map(|it| Token)),
- elem: Box::new(f.fold_type(*node.elem)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_type_reference<F>(f: &mut F, node: TypeReference) -> TypeReference
- where
- F: Fold + ?Sized,
- {
- TypeReference {
-- and_token: Token ! [ & ](tokens_helper(f, &node.and_token.spans)),
-+ and_token: Token ! [&](tokens_helper(f, &node.and_token.spans)),
- lifetime: (node.lifetime).map(|it| f.fold_lifetime(it)),
- mutability: (node.mutability).map(|it| Token)),
- elem: Box::new(f.fold_type(*node.elem)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_type_slice<F>(f: &mut F, node: TypeSlice) -> TypeSlice
- where
-@@ -3067,28 +3040,28 @@ where
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_un_op<F>(f: &mut F, node: UnOp) -> UnOp
- where
- F: Fold + ?Sized,
- {
- match node {
-- UnOp::Deref(_binding_0) => UnOp::Deref(Token ! [ * ](tokens_helper(f, &_binding_0.spans))),
-+ UnOp::Deref(_binding_0) => UnOp::Deref(Token ! [*](tokens_helper(f, &_binding_0.spans))),
- UnOp::Not(_binding_0) => UnOp::Not(Token)),
-- UnOp::Neg(_binding_0) => UnOp::Neg(Token ! [ - ](tokens_helper(f, &_binding_0.spans))),
-+ UnOp::Neg(_binding_0) => UnOp::Neg(Token ! [-](tokens_helper(f, &_binding_0.spans))),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_use_glob<F>(f: &mut F, node: UseGlob) -> UseGlob
- where
- F: Fold + ?Sized,
- {
- UseGlob {
-- star_token: Token ! [ * ](tokens_helper(f, &node.star_token.spans)),
-+ star_token: Token ! [*](tokens_helper(f, &node.star_token.spans)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_use_group<F>(f: &mut F, node: UseGroup) -> UseGroup
- where
- F: Fold + ?Sized,
- {
- UseGroup {
-@@ -3107,17 +3080,17 @@ where
- }
- #[cfg(feature = "full")]
- pub fn fold_use_path<F>(f: &mut F, node: UsePath) -> UsePath
- where
- F: Fold + ?Sized,
- {
- UsePath {
- ident: f.fold_ident(node.ident),
-- colon2_token: Token ! [ :: ](tokens_helper(f, &node.colon2_token.spans)),
-+ colon2_token: Token ! [::](tokens_helper(f, &node.colon2_token.spans)),
- tree: Box::new(f.fold_use_tree(*node.tree)),
- }
- }
- #[cfg(feature = "full")]
- pub fn fold_use_rename<F>(f: &mut F, node: UseRename) -> UseRename
- where
- F: Fold + ?Sized,
- {
-@@ -3142,31 +3115,31 @@ where
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_variadic<F>(f: &mut F, node: Variadic) -> Variadic
- where
- F: Fold + ?Sized,
- {
- Variadic {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-- dots: Token ! [ ... ](tokens_helper(f, &node.dots.spans)),
-+ dots: Token ! [...](tokens_helper(f, &node.dots.spans)),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_variant<F>(f: &mut F, node: Variant) -> Variant
- where
- F: Fold + ?Sized,
- {
- Variant {
- attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
- ident: f.fold_ident(node.ident),
- fields: f.fold_fields(node.fields),
- discriminant: (node.discriminant).map(|it| {
- (
-- Token ! [ = ](tokens_helper(f, &(it).0.spans)),
-+ Token ! [=](tokens_helper(f, &(it).0.spans)),
- f.fold_expr((it).1),
- )
- }),
- }
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- pub fn fold_vis_crate<F>(f: &mut F, node: VisCrate) -> VisCrate
- where
-diff --git a/third_party/rust/syn/src/gen/hash.rs b/third_party/rust/syn/src/gen/hash.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/src/gen/hash.rs
-@@ -0,0 +1,2691 @@
-+// This file is @generated by syn-internal-codegen.
-+// It is not intended for manual editing.
-+
-+#[cfg(any(feature = "derive", feature = "full"))]
-+use crate::tt::TokenStreamHelper;
-+use crate::*;
-+use std::hash::{Hash, Hasher};
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Abi {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.name.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for AngleBracketedGenericArguments {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.colon2_token.hash(state);
-+ self.args.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for Arm {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.pat.hash(state);
-+ self.guard.hash(state);
-+ self.body.hash(state);
-+ self.comma.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for AttrStyle {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ AttrStyle::Outer => {
-+ state.write_u8(0u8);
-+ }
-+ AttrStyle::Inner(_) => {
-+ state.write_u8(1u8);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Attribute {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.style.hash(state);
-+ self.path.hash(state);
-+ TokenStreamHelper(&self.tokens).hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for BareFnArg {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.name.hash(state);
-+ self.ty.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for BinOp {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ BinOp::Add(_) => {
-+ state.write_u8(0u8);
-+ }
-+ BinOp::Sub(_) => {
-+ state.write_u8(1u8);
-+ }
-+ BinOp::Mul(_) => {
-+ state.write_u8(2u8);
-+ }
-+ BinOp::Div(_) => {
-+ state.write_u8(3u8);
-+ }
-+ BinOp::Rem(_) => {
-+ state.write_u8(4u8);
-+ }
-+ BinOp::And(_) => {
-+ state.write_u8(5u8);
-+ }
-+ BinOp::Or(_) => {
-+ state.write_u8(6u8);
-+ }
-+ BinOp::BitXor(_) => {
-+ state.write_u8(7u8);
-+ }
-+ BinOp::BitAnd(_) => {
-+ state.write_u8(8u8);
-+ }
-+ BinOp::BitOr(_) => {
-+ state.write_u8(9u8);
-+ }
-+ BinOp::Shl(_) => {
-+ state.write_u8(10u8);
-+ }
-+ BinOp::Shr(_) => {
-+ state.write_u8(11u8);
-+ }
-+ BinOp::Eq(_) => {
-+ state.write_u8(12u8);
-+ }
-+ BinOp::Lt(_) => {
-+ state.write_u8(13u8);
-+ }
-+ BinOp::Le(_) => {
-+ state.write_u8(14u8);
-+ }
-+ BinOp::Ne(_) => {
-+ state.write_u8(15u8);
-+ }
-+ BinOp::Ge(_) => {
-+ state.write_u8(16u8);
-+ }
-+ BinOp::Gt(_) => {
-+ state.write_u8(17u8);
-+ }
-+ BinOp::AddEq(_) => {
-+ state.write_u8(18u8);
-+ }
-+ BinOp::SubEq(_) => {
-+ state.write_u8(19u8);
-+ }
-+ BinOp::MulEq(_) => {
-+ state.write_u8(20u8);
-+ }
-+ BinOp::DivEq(_) => {
-+ state.write_u8(21u8);
-+ }
-+ BinOp::RemEq(_) => {
-+ state.write_u8(22u8);
-+ }
-+ BinOp::BitXorEq(_) => {
-+ state.write_u8(23u8);
-+ }
-+ BinOp::BitAndEq(_) => {
-+ state.write_u8(24u8);
-+ }
-+ BinOp::BitOrEq(_) => {
-+ state.write_u8(25u8);
-+ }
-+ BinOp::ShlEq(_) => {
-+ state.write_u8(26u8);
-+ }
-+ BinOp::ShrEq(_) => {
-+ state.write_u8(27u8);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Binding {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.ident.hash(state);
-+ self.ty.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for Block {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.stmts.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for BoundLifetimes {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.lifetimes.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for ConstParam {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.ident.hash(state);
-+ self.ty.hash(state);
-+ self.eq_token.hash(state);
-+ self.default.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Constraint {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.ident.hash(state);
-+ self.bounds.hash(state);
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Hash for Data {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ Data::Struct(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ Data::Enum(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ Data::Union(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Hash for DataEnum {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.variants.hash(state);
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Hash for DataStruct {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.fields.hash(state);
-+ self.semi_token.hash(state);
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Hash for DataUnion {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.fields.hash(state);
-+ }
-+}
-+#[cfg(feature = "derive")]
-+impl Hash for DeriveInput {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.ident.hash(state);
-+ self.generics.hash(state);
-+ self.data.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Expr {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ #[cfg(feature = "full")]
-+ Expr::Array(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Assign(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::AssignOp(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Async(v0) => {
-+ state.write_u8(3u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Await(v0) => {
-+ state.write_u8(4u8);
-+ v0.hash(state);
-+ }
-+ Expr::Binary(v0) => {
-+ state.write_u8(5u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Block(v0) => {
-+ state.write_u8(6u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Box(v0) => {
-+ state.write_u8(7u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Break(v0) => {
-+ state.write_u8(8u8);
-+ v0.hash(state);
-+ }
-+ Expr::Call(v0) => {
-+ state.write_u8(9u8);
-+ v0.hash(state);
-+ }
-+ Expr::Cast(v0) => {
-+ state.write_u8(10u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Closure(v0) => {
-+ state.write_u8(11u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Continue(v0) => {
-+ state.write_u8(12u8);
-+ v0.hash(state);
-+ }
-+ Expr::Field(v0) => {
-+ state.write_u8(13u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::ForLoop(v0) => {
-+ state.write_u8(14u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Group(v0) => {
-+ state.write_u8(15u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::If(v0) => {
-+ state.write_u8(16u8);
-+ v0.hash(state);
-+ }
-+ Expr::Index(v0) => {
-+ state.write_u8(17u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Let(v0) => {
-+ state.write_u8(18u8);
-+ v0.hash(state);
-+ }
-+ Expr::Lit(v0) => {
-+ state.write_u8(19u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Loop(v0) => {
-+ state.write_u8(20u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Macro(v0) => {
-+ state.write_u8(21u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Match(v0) => {
-+ state.write_u8(22u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::MethodCall(v0) => {
-+ state.write_u8(23u8);
-+ v0.hash(state);
-+ }
-+ Expr::Paren(v0) => {
-+ state.write_u8(24u8);
-+ v0.hash(state);
-+ }
-+ Expr::Path(v0) => {
-+ state.write_u8(25u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Range(v0) => {
-+ state.write_u8(26u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Reference(v0) => {
-+ state.write_u8(27u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Repeat(v0) => {
-+ state.write_u8(28u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Return(v0) => {
-+ state.write_u8(29u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Struct(v0) => {
-+ state.write_u8(30u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Try(v0) => {
-+ state.write_u8(31u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::TryBlock(v0) => {
-+ state.write_u8(32u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Tuple(v0) => {
-+ state.write_u8(33u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Type(v0) => {
-+ state.write_u8(34u8);
-+ v0.hash(state);
-+ }
-+ Expr::Unary(v0) => {
-+ state.write_u8(35u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Unsafe(v0) => {
-+ state.write_u8(36u8);
-+ v0.hash(state);
-+ }
-+ Expr::Verbatim(v0) => {
-+ state.write_u8(37u8);
-+ TokenStreamHelper(v0).hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::While(v0) => {
-+ state.write_u8(38u8);
-+ v0.hash(state);
-+ }
-+ #[cfg(feature = "full")]
-+ Expr::Yield(v0) => {
-+ state.write_u8(39u8);
-+ v0.hash(state);
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprArray {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.elems.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprAssign {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.left.hash(state);
-+ self.right.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprAssignOp {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.left.hash(state);
-+ self.op.hash(state);
-+ self.right.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprAsync {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.capture.hash(state);
-+ self.block.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprAwait {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.base.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for ExprBinary {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.left.hash(state);
-+ self.op.hash(state);
-+ self.right.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprBlock {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.label.hash(state);
-+ self.block.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprBox {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprBreak {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.label.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for ExprCall {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.func.hash(state);
-+ self.args.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for ExprCast {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.expr.hash(state);
-+ self.ty.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprClosure {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.asyncness.hash(state);
-+ self.movability.hash(state);
-+ self.capture.hash(state);
-+ self.inputs.hash(state);
-+ self.output.hash(state);
-+ self.body.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprContinue {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.label.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for ExprField {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.base.hash(state);
-+ self.member.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprForLoop {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.label.hash(state);
-+ self.pat.hash(state);
-+ self.expr.hash(state);
-+ self.body.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprGroup {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprIf {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.cond.hash(state);
-+ self.then_branch.hash(state);
-+ self.else_branch.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for ExprIndex {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.expr.hash(state);
-+ self.index.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprLet {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.pat.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for ExprLit {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.lit.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprLoop {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.label.hash(state);
-+ self.body.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprMacro {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.mac.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprMatch {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.expr.hash(state);
-+ self.arms.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprMethodCall {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.receiver.hash(state);
-+ self.method.hash(state);
-+ self.turbofish.hash(state);
-+ self.args.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for ExprParen {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for ExprPath {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.qself.hash(state);
-+ self.path.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprRange {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.from.hash(state);
-+ self.limits.hash(state);
-+ self.to.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprReference {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.mutability.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprRepeat {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.expr.hash(state);
-+ self.len.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprReturn {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprStruct {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.path.hash(state);
-+ self.fields.hash(state);
-+ self.dot2_token.hash(state);
-+ self.rest.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprTry {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprTryBlock {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.block.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprTuple {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.elems.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprType {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.expr.hash(state);
-+ self.ty.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for ExprUnary {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.op.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprUnsafe {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.block.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprWhile {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.label.hash(state);
-+ self.cond.hash(state);
-+ self.body.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ExprYield {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Field {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.ident.hash(state);
-+ self.colon_token.hash(state);
-+ self.ty.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for FieldPat {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.member.hash(state);
-+ self.colon_token.hash(state);
-+ self.pat.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for FieldValue {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.member.hash(state);
-+ self.colon_token.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Fields {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ Fields::Named(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ Fields::Unnamed(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ Fields::Unit => {
-+ state.write_u8(2u8);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for FieldsNamed {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.named.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for FieldsUnnamed {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.unnamed.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for File {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.shebang.hash(state);
-+ self.attrs.hash(state);
-+ self.items.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for FnArg {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ FnArg::Receiver(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ FnArg::Typed(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ForeignItem {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ ForeignItem::Fn(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ ForeignItem::Static(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ ForeignItem::Type(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ ForeignItem::Macro(v0) => {
-+ state.write_u8(3u8);
-+ v0.hash(state);
-+ }
-+ ForeignItem::Verbatim(v0) => {
-+ state.write_u8(4u8);
-+ TokenStreamHelper(v0).hash(state);
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ForeignItemFn {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.sig.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ForeignItemMacro {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.mac.hash(state);
-+ self.semi_token.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ForeignItemStatic {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.mutability.hash(state);
-+ self.ident.hash(state);
-+ self.ty.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ForeignItemType {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.ident.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for GenericArgument {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ GenericArgument::Lifetime(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ GenericArgument::Type(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ GenericArgument::Binding(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ GenericArgument::Constraint(v0) => {
-+ state.write_u8(3u8);
-+ v0.hash(state);
-+ }
-+ GenericArgument::Const(v0) => {
-+ state.write_u8(4u8);
-+ v0.hash(state);
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for GenericMethodArgument {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ GenericMethodArgument::Type(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ GenericMethodArgument::Const(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for GenericParam {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ GenericParam::Type(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ GenericParam::Lifetime(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ GenericParam::Const(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Generics {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.lt_token.hash(state);
-+ self.params.hash(state);
-+ self.gt_token.hash(state);
-+ self.where_clause.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ImplItem {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ ImplItem::Const(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ ImplItem::Method(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ ImplItem::Type(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ ImplItem::Macro(v0) => {
-+ state.write_u8(3u8);
-+ v0.hash(state);
-+ }
-+ ImplItem::Verbatim(v0) => {
-+ state.write_u8(4u8);
-+ TokenStreamHelper(v0).hash(state);
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ImplItemConst {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.defaultness.hash(state);
-+ self.ident.hash(state);
-+ self.ty.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ImplItemMacro {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.mac.hash(state);
-+ self.semi_token.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ImplItemMethod {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.defaultness.hash(state);
-+ self.sig.hash(state);
-+ self.block.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ImplItemType {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.defaultness.hash(state);
-+ self.ident.hash(state);
-+ self.generics.hash(state);
-+ self.ty.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for Item {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ Item::Const(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ Item::Enum(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ Item::ExternCrate(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ Item::Fn(v0) => {
-+ state.write_u8(3u8);
-+ v0.hash(state);
-+ }
-+ Item::ForeignMod(v0) => {
-+ state.write_u8(4u8);
-+ v0.hash(state);
-+ }
-+ Item::Impl(v0) => {
-+ state.write_u8(5u8);
-+ v0.hash(state);
-+ }
-+ Item::Macro(v0) => {
-+ state.write_u8(6u8);
-+ v0.hash(state);
-+ }
-+ Item::Macro2(v0) => {
-+ state.write_u8(7u8);
-+ v0.hash(state);
-+ }
-+ Item::Mod(v0) => {
-+ state.write_u8(8u8);
-+ v0.hash(state);
-+ }
-+ Item::Static(v0) => {
-+ state.write_u8(9u8);
-+ v0.hash(state);
-+ }
-+ Item::Struct(v0) => {
-+ state.write_u8(10u8);
-+ v0.hash(state);
-+ }
-+ Item::Trait(v0) => {
-+ state.write_u8(11u8);
-+ v0.hash(state);
-+ }
-+ Item::TraitAlias(v0) => {
-+ state.write_u8(12u8);
-+ v0.hash(state);
-+ }
-+ Item::Type(v0) => {
-+ state.write_u8(13u8);
-+ v0.hash(state);
-+ }
-+ Item::Union(v0) => {
-+ state.write_u8(14u8);
-+ v0.hash(state);
-+ }
-+ Item::Use(v0) => {
-+ state.write_u8(15u8);
-+ v0.hash(state);
-+ }
-+ Item::Verbatim(v0) => {
-+ state.write_u8(16u8);
-+ TokenStreamHelper(v0).hash(state);
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemConst {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.ident.hash(state);
-+ self.ty.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemEnum {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.ident.hash(state);
-+ self.generics.hash(state);
-+ self.variants.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemExternCrate {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.ident.hash(state);
-+ self.rename.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemFn {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.sig.hash(state);
-+ self.block.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemForeignMod {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.abi.hash(state);
-+ self.items.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemImpl {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.defaultness.hash(state);
-+ self.unsafety.hash(state);
-+ self.generics.hash(state);
-+ self.trait_.hash(state);
-+ self.self_ty.hash(state);
-+ self.items.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemMacro {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.ident.hash(state);
-+ self.mac.hash(state);
-+ self.semi_token.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemMacro2 {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.ident.hash(state);
-+ TokenStreamHelper(&self.rules).hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemMod {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.ident.hash(state);
-+ self.content.hash(state);
-+ self.semi.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemStatic {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.mutability.hash(state);
-+ self.ident.hash(state);
-+ self.ty.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemStruct {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.ident.hash(state);
-+ self.generics.hash(state);
-+ self.fields.hash(state);
-+ self.semi_token.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemTrait {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.unsafety.hash(state);
-+ self.auto_token.hash(state);
-+ self.ident.hash(state);
-+ self.generics.hash(state);
-+ self.colon_token.hash(state);
-+ self.supertraits.hash(state);
-+ self.items.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemTraitAlias {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.ident.hash(state);
-+ self.generics.hash(state);
-+ self.bounds.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemType {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.ident.hash(state);
-+ self.generics.hash(state);
-+ self.ty.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemUnion {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.ident.hash(state);
-+ self.generics.hash(state);
-+ self.fields.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for ItemUse {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.vis.hash(state);
-+ self.leading_colon.hash(state);
-+ self.tree.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for Label {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.name.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for LifetimeDef {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.lifetime.hash(state);
-+ self.colon_token.hash(state);
-+ self.bounds.hash(state);
-+ }
-+}
-+impl Hash for Lit {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ Lit::Str(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ Lit::ByteStr(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ Lit::Byte(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ Lit::Char(v0) => {
-+ state.write_u8(3u8);
-+ v0.hash(state);
-+ }
-+ Lit::Int(v0) => {
-+ state.write_u8(4u8);
-+ v0.hash(state);
-+ }
-+ Lit::Float(v0) => {
-+ state.write_u8(5u8);
-+ v0.hash(state);
-+ }
-+ Lit::Bool(v0) => {
-+ state.write_u8(6u8);
-+ v0.hash(state);
-+ }
-+ Lit::Verbatim(v0) => {
-+ state.write_u8(7u8);
-+ v0.to_string().hash(state);
-+ }
-+ }
-+ }
-+}
-+impl Hash for LitBool {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.value.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for Local {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.pat.hash(state);
-+ self.init.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Macro {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.path.hash(state);
-+ self.delimiter.hash(state);
-+ TokenStreamHelper(&self.tokens).hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for MacroDelimiter {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ MacroDelimiter::Paren(_) => {
-+ state.write_u8(0u8);
-+ }
-+ MacroDelimiter::Brace(_) => {
-+ state.write_u8(1u8);
-+ }
-+ MacroDelimiter::Bracket(_) => {
-+ state.write_u8(2u8);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Meta {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ Meta::Path(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ Meta::List(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ Meta::NameValue(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for MetaList {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.path.hash(state);
-+ self.nested.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for MetaNameValue {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.path.hash(state);
-+ self.lit.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for MethodTurbofish {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.args.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for NestedMeta {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ NestedMeta::Meta(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ NestedMeta::Lit(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for ParenthesizedGenericArguments {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.inputs.hash(state);
-+ self.output.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for Pat {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ Pat::Box(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ Pat::Ident(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ Pat::Lit(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ Pat::Macro(v0) => {
-+ state.write_u8(3u8);
-+ v0.hash(state);
-+ }
-+ Pat::Or(v0) => {
-+ state.write_u8(4u8);
-+ v0.hash(state);
-+ }
-+ Pat::Path(v0) => {
-+ state.write_u8(5u8);
-+ v0.hash(state);
-+ }
-+ Pat::Range(v0) => {
-+ state.write_u8(6u8);
-+ v0.hash(state);
-+ }
-+ Pat::Reference(v0) => {
-+ state.write_u8(7u8);
-+ v0.hash(state);
-+ }
-+ Pat::Rest(v0) => {
-+ state.write_u8(8u8);
-+ v0.hash(state);
-+ }
-+ Pat::Slice(v0) => {
-+ state.write_u8(9u8);
-+ v0.hash(state);
-+ }
-+ Pat::Struct(v0) => {
-+ state.write_u8(10u8);
-+ v0.hash(state);
-+ }
-+ Pat::Tuple(v0) => {
-+ state.write_u8(11u8);
-+ v0.hash(state);
-+ }
-+ Pat::TupleStruct(v0) => {
-+ state.write_u8(12u8);
-+ v0.hash(state);
-+ }
-+ Pat::Type(v0) => {
-+ state.write_u8(13u8);
-+ v0.hash(state);
-+ }
-+ Pat::Verbatim(v0) => {
-+ state.write_u8(14u8);
-+ TokenStreamHelper(v0).hash(state);
-+ }
-+ Pat::Wild(v0) => {
-+ state.write_u8(15u8);
-+ v0.hash(state);
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatBox {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.pat.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatIdent {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.by_ref.hash(state);
-+ self.mutability.hash(state);
-+ self.ident.hash(state);
-+ self.subpat.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatLit {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.expr.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatMacro {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.mac.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatOr {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.leading_vert.hash(state);
-+ self.cases.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatPath {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.qself.hash(state);
-+ self.path.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatRange {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.lo.hash(state);
-+ self.limits.hash(state);
-+ self.hi.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatReference {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.mutability.hash(state);
-+ self.pat.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatRest {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatSlice {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.elems.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatStruct {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.path.hash(state);
-+ self.fields.hash(state);
-+ self.dot2_token.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatTuple {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.elems.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatTupleStruct {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.path.hash(state);
-+ self.pat.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatType {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.pat.hash(state);
-+ self.ty.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for PatWild {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Path {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.leading_colon.hash(state);
-+ self.segments.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for PathArguments {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ PathArguments::None => {
-+ state.write_u8(0u8);
-+ }
-+ PathArguments::AngleBracketed(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ PathArguments::Parenthesized(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for PathSegment {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.ident.hash(state);
-+ self.arguments.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for PredicateEq {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.lhs_ty.hash(state);
-+ self.rhs_ty.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for PredicateLifetime {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.lifetime.hash(state);
-+ self.bounds.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for PredicateType {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.lifetimes.hash(state);
-+ self.bounded_ty.hash(state);
-+ self.bounds.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for QSelf {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.ty.hash(state);
-+ self.position.hash(state);
-+ self.as_token.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for RangeLimits {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ RangeLimits::HalfOpen(_) => {
-+ state.write_u8(0u8);
-+ }
-+ RangeLimits::Closed(_) => {
-+ state.write_u8(1u8);
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for Receiver {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.reference.hash(state);
-+ self.mutability.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for ReturnType {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ ReturnType::Default => {
-+ state.write_u8(0u8);
-+ }
-+ ReturnType::Type(_, v1) => {
-+ state.write_u8(1u8);
-+ v1.hash(state);
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for Signature {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.constness.hash(state);
-+ self.asyncness.hash(state);
-+ self.unsafety.hash(state);
-+ self.abi.hash(state);
-+ self.ident.hash(state);
-+ self.generics.hash(state);
-+ self.inputs.hash(state);
-+ self.variadic.hash(state);
-+ self.output.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for Stmt {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ Stmt::Local(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ Stmt::Item(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ Stmt::Expr(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ Stmt::Semi(v0, _) => {
-+ state.write_u8(3u8);
-+ v0.hash(state);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TraitBound {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.paren_token.hash(state);
-+ self.modifier.hash(state);
-+ self.lifetimes.hash(state);
-+ self.path.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TraitBoundModifier {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ TraitBoundModifier::None => {
-+ state.write_u8(0u8);
-+ }
-+ TraitBoundModifier::Maybe(_) => {
-+ state.write_u8(1u8);
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for TraitItem {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ TraitItem::Const(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ TraitItem::Method(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ TraitItem::Type(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ TraitItem::Macro(v0) => {
-+ state.write_u8(3u8);
-+ v0.hash(state);
-+ }
-+ TraitItem::Verbatim(v0) => {
-+ state.write_u8(4u8);
-+ TokenStreamHelper(v0).hash(state);
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for TraitItemConst {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.ident.hash(state);
-+ self.ty.hash(state);
-+ self.default.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for TraitItemMacro {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.mac.hash(state);
-+ self.semi_token.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for TraitItemMethod {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.sig.hash(state);
-+ self.default.hash(state);
-+ self.semi_token.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for TraitItemType {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.ident.hash(state);
-+ self.generics.hash(state);
-+ self.colon_token.hash(state);
-+ self.bounds.hash(state);
-+ self.default.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Type {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ Type::Array(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ Type::BareFn(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ Type::Group(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ Type::ImplTrait(v0) => {
-+ state.write_u8(3u8);
-+ v0.hash(state);
-+ }
-+ Type::Infer(v0) => {
-+ state.write_u8(4u8);
-+ v0.hash(state);
-+ }
-+ Type::Macro(v0) => {
-+ state.write_u8(5u8);
-+ v0.hash(state);
-+ }
-+ Type::Never(v0) => {
-+ state.write_u8(6u8);
-+ v0.hash(state);
-+ }
-+ Type::Paren(v0) => {
-+ state.write_u8(7u8);
-+ v0.hash(state);
-+ }
-+ Type::Path(v0) => {
-+ state.write_u8(8u8);
-+ v0.hash(state);
-+ }
-+ Type::Ptr(v0) => {
-+ state.write_u8(9u8);
-+ v0.hash(state);
-+ }
-+ Type::Reference(v0) => {
-+ state.write_u8(10u8);
-+ v0.hash(state);
-+ }
-+ Type::Slice(v0) => {
-+ state.write_u8(11u8);
-+ v0.hash(state);
-+ }
-+ Type::TraitObject(v0) => {
-+ state.write_u8(12u8);
-+ v0.hash(state);
-+ }
-+ Type::Tuple(v0) => {
-+ state.write_u8(13u8);
-+ v0.hash(state);
-+ }
-+ Type::Verbatim(v0) => {
-+ state.write_u8(14u8);
-+ TokenStreamHelper(v0).hash(state);
-+ }
-+ _ => unreachable!(),
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeArray {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.elem.hash(state);
-+ self.len.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeBareFn {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.lifetimes.hash(state);
-+ self.unsafety.hash(state);
-+ self.abi.hash(state);
-+ self.inputs.hash(state);
-+ self.variadic.hash(state);
-+ self.output.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeGroup {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.elem.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeImplTrait {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.bounds.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeInfer {
-+ fn hash<H>(&self, _state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeMacro {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.mac.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeNever {
-+ fn hash<H>(&self, _state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeParam {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.ident.hash(state);
-+ self.colon_token.hash(state);
-+ self.bounds.hash(state);
-+ self.eq_token.hash(state);
-+ self.default.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeParamBound {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ TypeParamBound::Trait(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ TypeParamBound::Lifetime(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeParen {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.elem.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypePath {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.qself.hash(state);
-+ self.path.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypePtr {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.const_token.hash(state);
-+ self.mutability.hash(state);
-+ self.elem.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeReference {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.lifetime.hash(state);
-+ self.mutability.hash(state);
-+ self.elem.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeSlice {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.elem.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeTraitObject {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.dyn_token.hash(state);
-+ self.bounds.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for TypeTuple {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.elems.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for UnOp {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ UnOp::Deref(_) => {
-+ state.write_u8(0u8);
-+ }
-+ UnOp::Not(_) => {
-+ state.write_u8(1u8);
-+ }
-+ UnOp::Neg(_) => {
-+ state.write_u8(2u8);
-+ }
-+ }
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for UseGlob {
-+ fn hash<H>(&self, _state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for UseGroup {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.items.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for UseName {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.ident.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for UsePath {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.ident.hash(state);
-+ self.tree.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for UseRename {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.ident.hash(state);
-+ self.rename.hash(state);
-+ }
-+}
-+#[cfg(feature = "full")]
-+impl Hash for UseTree {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ UseTree::Path(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ UseTree::Name(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ UseTree::Rename(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ UseTree::Glob(v0) => {
-+ state.write_u8(3u8);
-+ v0.hash(state);
-+ }
-+ UseTree::Group(v0) => {
-+ state.write_u8(4u8);
-+ v0.hash(state);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Variadic {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Variant {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.attrs.hash(state);
-+ self.ident.hash(state);
-+ self.fields.hash(state);
-+ self.discriminant.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for VisCrate {
-+ fn hash<H>(&self, _state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for VisPublic {
-+ fn hash<H>(&self, _state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for VisRestricted {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.in_token.hash(state);
-+ self.path.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for Visibility {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ Visibility::Public(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ Visibility::Crate(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ Visibility::Restricted(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ Visibility::Inherited => {
-+ state.write_u8(3u8);
-+ }
-+ }
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for WhereClause {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ self.predicates.hash(state);
-+ }
-+}
-+#[cfg(any(feature = "derive", feature = "full"))]
-+impl Hash for WherePredicate {
-+ fn hash<H>(&self, state: &mut H)
-+ where
-+ H: Hasher,
-+ {
-+ match self {
-+ WherePredicate::Type(v0) => {
-+ state.write_u8(0u8);
-+ v0.hash(state);
-+ }
-+ WherePredicate::Lifetime(v0) => {
-+ state.write_u8(1u8);
-+ v0.hash(state);
-+ }
-+ WherePredicate::Eq(v0) => {
-+ state.write_u8(2u8);
-+ v0.hash(state);
-+ }
-+ }
-+ }
-+}
-diff --git a/third_party/rust/syn/src/gen/visit.rs b/third_party/rust/syn/src/gen/visit.rs
---- a/third_party/rust/syn/src/gen/visit.rs
-+++ b/third_party/rust/syn/src/gen/visit.rs
-@@ -15,27 +15,26 @@ macro_rules! full {
- };
- }
- #[cfg(all(feature = "derive", not(feature = "full")))]
- macro_rules! full {
- ($e:expr) => {
- unreachable!()
- };
- }
--#[cfg(any(feature = "full", feature = "derive"))]
- macro_rules! skip {
- ($($tt:tt)*) => {};
- }
- /// Syntax tree traversal to walk a shared borrow of a syntax tree.
- ///
- /// See the [module documentation] for details.
- ///
- /// [module documentation]: self
- ///
--/// *This trait is available if Syn is built with the `"visit"` feature.*
-+/// *This trait is available only if Syn is built with the `"visit"` feature.*
- pub trait Visit<'ast> {
- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_abi(&mut self, i: &'ast Abi) {
- visit_abi(self, i)
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_angle_bracketed_generic_arguments(&mut self, i: &'ast AngleBracketedGenericArguments) {
- visit_angle_bracketed_generic_arguments(self, i)
-@@ -429,45 +428,37 @@ pub trait Visit<'ast> {
- }
- fn visit_lifetime(&mut self, i: &'ast Lifetime) {
- visit_lifetime(self, i)
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lifetime_def(&mut self, i: &'ast LifetimeDef) {
- visit_lifetime_def(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit(&mut self, i: &'ast Lit) {
- visit_lit(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_bool(&mut self, i: &'ast LitBool) {
- visit_lit_bool(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_byte(&mut self, i: &'ast LitByte) {
- visit_lit_byte(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_byte_str(&mut self, i: &'ast LitByteStr) {
- visit_lit_byte_str(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_char(&mut self, i: &'ast LitChar) {
- visit_lit_char(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_float(&mut self, i: &'ast LitFloat) {
- visit_lit_float(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_int(&mut self, i: &'ast LitInt) {
- visit_lit_int(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_str(&mut self, i: &'ast LitStr) {
- visit_lit_str(self, i)
- }
- #[cfg(feature = "full")]
- fn visit_local(&mut self, i: &'ast Local) {
- visit_local(self, i)
- }
- #[cfg(any(feature = "derive", feature = "full"))]
-@@ -2532,17 +2523,16 @@ where
- for el in Punctuated::pairs(&node.bounds) {
- let (it, p) = el.into_tuple();
- v.visit_lifetime(it);
- if let Some(p) = p {
- tokens_helper(v, &p.spans);
- }
- }
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit<'ast, V>(v: &mut V, node: &'ast Lit)
- where
- V: Visit<'ast> + ?Sized,
- {
- match node {
- Lit::Str(_binding_0) => {
- v.visit_lit_str(_binding_0);
- }
-@@ -2564,55 +2554,48 @@ where
- Lit::Bool(_binding_0) => {
- v.visit_lit_bool(_binding_0);
- }
- Lit::Verbatim(_binding_0) => {
- skip!(_binding_0);
- }
- }
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_bool<'ast, V>(v: &mut V, node: &'ast LitBool)
- where
- V: Visit<'ast> + ?Sized,
- {
- skip!(node.value);
- v.visit_span(&node.span);
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_byte<'ast, V>(v: &mut V, node: &'ast LitByte)
- where
- V: Visit<'ast> + ?Sized,
- {
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_byte_str<'ast, V>(v: &mut V, node: &'ast LitByteStr)
- where
- V: Visit<'ast> + ?Sized,
- {
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_char<'ast, V>(v: &mut V, node: &'ast LitChar)
- where
- V: Visit<'ast> + ?Sized,
- {
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_float<'ast, V>(v: &mut V, node: &'ast LitFloat)
- where
- V: Visit<'ast> + ?Sized,
- {
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_int<'ast, V>(v: &mut V, node: &'ast LitInt)
- where
- V: Visit<'ast> + ?Sized,
- {
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_str<'ast, V>(v: &mut V, node: &'ast LitStr)
- where
- V: Visit<'ast> + ?Sized,
- {
- }
- #[cfg(feature = "full")]
- pub fn visit_local<'ast, V>(v: &mut V, node: &'ast Local)
- where
-diff --git a/third_party/rust/syn/src/gen/visit_mut.rs b/third_party/rust/syn/src/gen/visit_mut.rs
---- a/third_party/rust/syn/src/gen/visit_mut.rs
-+++ b/third_party/rust/syn/src/gen/visit_mut.rs
-@@ -15,28 +15,27 @@ macro_rules! full {
- };
- }
- #[cfg(all(feature = "derive", not(feature = "full")))]
- macro_rules! full {
- ($e:expr) => {
- unreachable!()
- };
- }
--#[cfg(any(feature = "full", feature = "derive"))]
- macro_rules! skip {
- ($($tt:tt)*) => {};
- }
- /// Syntax tree traversal to mutate an exclusive borrow of a syntax tree in
- /// place.
- ///
- /// See the [module documentation] for details.
- ///
- /// [module documentation]: self
- ///
--/// *This trait is available if Syn is built with the `"visit-mut"` feature.*
-+/// *This trait is available only if Syn is built with the `"visit-mut"` feature.*
- pub trait VisitMut {
- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_abi_mut(&mut self, i: &mut Abi) {
- visit_abi_mut(self, i)
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_angle_bracketed_generic_arguments_mut(
- &mut self,
-@@ -433,45 +432,37 @@ pub trait VisitMut {
- }
- fn visit_lifetime_mut(&mut self, i: &mut Lifetime) {
- visit_lifetime_mut(self, i)
- }
- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lifetime_def_mut(&mut self, i: &mut LifetimeDef) {
- visit_lifetime_def_mut(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_mut(&mut self, i: &mut Lit) {
- visit_lit_mut(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_bool_mut(&mut self, i: &mut LitBool) {
- visit_lit_bool_mut(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_byte_mut(&mut self, i: &mut LitByte) {
- visit_lit_byte_mut(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_byte_str_mut(&mut self, i: &mut LitByteStr) {
- visit_lit_byte_str_mut(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_char_mut(&mut self, i: &mut LitChar) {
- visit_lit_char_mut(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_float_mut(&mut self, i: &mut LitFloat) {
- visit_lit_float_mut(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_int_mut(&mut self, i: &mut LitInt) {
- visit_lit_int_mut(self, i)
- }
-- #[cfg(any(feature = "derive", feature = "full"))]
- fn visit_lit_str_mut(&mut self, i: &mut LitStr) {
- visit_lit_str_mut(self, i)
- }
- #[cfg(feature = "full")]
- fn visit_local_mut(&mut self, i: &mut Local) {
- visit_local_mut(self, i)
- }
- #[cfg(any(feature = "derive", feature = "full"))]
-@@ -2538,17 +2529,16 @@ where
- for el in Punctuated::pairs_mut(&mut node.bounds) {
- let (it, p) = el.into_tuple();
- v.visit_lifetime_mut(it);
- if let Some(p) = p {
- tokens_helper(v, &mut p.spans);
- }
- }
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_mut<V>(v: &mut V, node: &mut Lit)
- where
- V: VisitMut + ?Sized,
- {
- match node {
- Lit::Str(_binding_0) => {
- v.visit_lit_str_mut(_binding_0);
- }
-@@ -2570,55 +2560,48 @@ where
- Lit::Bool(_binding_0) => {
- v.visit_lit_bool_mut(_binding_0);
- }
- Lit::Verbatim(_binding_0) => {
- skip!(_binding_0);
- }
- }
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_bool_mut<V>(v: &mut V, node: &mut LitBool)
- where
- V: VisitMut + ?Sized,
- {
- skip!(node.value);
- v.visit_span_mut(&mut node.span);
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_byte_mut<V>(v: &mut V, node: &mut LitByte)
- where
- V: VisitMut + ?Sized,
- {
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_byte_str_mut<V>(v: &mut V, node: &mut LitByteStr)
- where
- V: VisitMut + ?Sized,
- {
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_char_mut<V>(v: &mut V, node: &mut LitChar)
- where
- V: VisitMut + ?Sized,
- {
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_float_mut<V>(v: &mut V, node: &mut LitFloat)
- where
- V: VisitMut + ?Sized,
- {
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_int_mut<V>(v: &mut V, node: &mut LitInt)
- where
- V: VisitMut + ?Sized,
- {
- }
--#[cfg(any(feature = "derive", feature = "full"))]
- pub fn visit_lit_str_mut<V>(v: &mut V, node: &mut LitStr)
- where
- V: VisitMut + ?Sized,
- {
- }
- #[cfg(feature = "full")]
- pub fn visit_local_mut<V>(v: &mut V, node: &mut Local)
- where
-diff --git a/third_party/rust/syn/src/generics.rs b/third_party/rust/syn/src/generics.rs
---- a/third_party/rust/syn/src/generics.rs
-+++ b/third_party/rust/syn/src/generics.rs
-@@ -1,97 +1,108 @@
- use super::*;
- use crate::punctuated::{Iter, IterMut, Punctuated};
-+#[cfg(all(feature = "printing", feature = "extra-traits"))]
-+use std::fmt::{self, Debug};
-+#[cfg(all(feature = "printing", feature = "extra-traits"))]
-+use std::hash::{Hash, Hasher};
-
- ast_struct! {
- /// Lifetimes and type parameters attached to a declaration of a function,
- /// enum, trait, etc.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
-- #[derive(Default)]
- pub struct Generics {
- pub lt_token: Option<Token![<]>,
- pub params: Punctuated<GenericParam, Token![,]>,
- pub gt_token: Option<Token![>]>,
- pub where_clause: Option<WhereClause>,
- }
- }
-
- ast_enum_of_structs! {
- /// A generic type parameter, lifetime, or const generic: `T: Into<String>`,
- /// `'a: 'b`, `const LEN: usize`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
-- //
-- // TODO: change syntax-tree-enum link to an intra rustdoc link, currently
-- // blocked on https://github.com/rust-lang/rust/issues/62833
- pub enum GenericParam {
- /// A generic type parameter: `T: Into<String>`.
- Type(TypeParam),
-
- /// A lifetime definition: `'a: 'b + 'c + 'd`.
- Lifetime(LifetimeDef),
-
- /// A const generic parameter: `const LENGTH: usize`.
- Const(ConstParam),
- }
- }
-
- ast_struct! {
- /// A generic type parameter: `T: Into<String>`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeParam {
- pub attrs: Vec<Attribute>,
- pub ident: Ident,
- pub colon_token: Option<Token![:]>,
- pub bounds: Punctuated<TypeParamBound, Token![+]>,
- pub eq_token: Option<Token![=]>,
- pub default: Option<Type>,
- }
- }
-
- ast_struct! {
- /// A lifetime definition: `'a: 'b + 'c + 'd`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct LifetimeDef {
- pub attrs: Vec<Attribute>,
- pub lifetime: Lifetime,
- pub colon_token: Option<Token![:]>,
- pub bounds: Punctuated<Lifetime, Token![+]>,
- }
- }
-
- ast_struct! {
- /// A const generic parameter: `const LENGTH: usize`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct ConstParam {
- pub attrs: Vec<Attribute>,
- pub const_token: Token![const],
- pub ident: Ident,
- pub colon_token: Token![:],
- pub ty: Type,
- pub eq_token: Option<Token![=]>,
- pub default: Option<Expr>,
- }
- }
-
-+impl Default for Generics {
-+ fn default() -> Self {
-+ Generics {
-+ lt_token: None,
-+ params: Punctuated::new(),
-+ gt_token: None,
-+ where_clause: None,
-+ }
-+ }
-+}
-+
- impl Generics {
- /// Returns an
- /// <code
- /// style="padding-right:0;">Iterator<Item = &</code><a
- /// href="struct.TypeParam.html"><code
- /// style="padding-left:0;padding-right:0;">TypeParam</code></a><code
- /// style="padding-left:0;">></code>
- /// over the type parameters in `self.params`.
-@@ -275,100 +286,148 @@ impl<'a> Iterator for ConstParamsMut<'a>
- } else {
- self.next()
- }
- }
- }
-
- /// Returned by `Generics::split_for_impl`.
- ///
--/// *This type is available if Syn is built with the `"derive"` or `"full"`
-+/// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature and the `"printing"` feature.*
- #[cfg(feature = "printing")]
--#[cfg_attr(feature = "extra-traits", derive(Debug, Eq, PartialEq, Hash))]
--#[cfg_attr(feature = "clone-impls", derive(Clone))]
- pub struct ImplGenerics<'a>(&'a Generics);
-
- /// Returned by `Generics::split_for_impl`.
- ///
--/// *This type is available if Syn is built with the `"derive"` or `"full"`
-+/// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature and the `"printing"` feature.*
- #[cfg(feature = "printing")]
--#[cfg_attr(feature = "extra-traits", derive(Debug, Eq, PartialEq, Hash))]
--#[cfg_attr(feature = "clone-impls", derive(Clone))]
- pub struct TypeGenerics<'a>(&'a Generics);
-
- /// Returned by `TypeGenerics::as_turbofish`.
- ///
--/// *This type is available if Syn is built with the `"derive"` or `"full"`
-+/// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature and the `"printing"` feature.*
- #[cfg(feature = "printing")]
--#[cfg_attr(feature = "extra-traits", derive(Debug, Eq, PartialEq, Hash))]
--#[cfg_attr(feature = "clone-impls", derive(Clone))]
- pub struct Turbofish<'a>(&'a Generics);
-
- #[cfg(feature = "printing")]
- impl Generics {
- /// Split a type's generics into the pieces required for impl'ing a trait
- /// for that type.
- ///
- /// ```
- /// # use proc_macro2::{Span, Ident};
- /// # use quote::quote;
- /// #
-- /// # fn main() {
-- /// # let generics: syn::Generics = Default::default();
-- /// # let name = Ident::new("MyType", Span::call_site());
-+ /// # let generics: syn::Generics = Default::default();
-+ /// # let name = Ident::new("MyType", Span::call_site());
- /// #
- /// let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
- /// quote! {
- /// impl #impl_generics MyTrait for #name #ty_generics #where_clause {
- /// // ...
- /// }
- /// }
-- /// # ;
-- /// # }
-+ /// # ;
- /// ```
- ///
-- /// *This method is available if Syn is built with the `"derive"` or
-+ /// *This method is available only if Syn is built with the `"derive"` or
- /// `"full"` feature and the `"printing"` feature.*
- pub fn split_for_impl(&self) -> (ImplGenerics, TypeGenerics, Option<&WhereClause>) {
- (
- ImplGenerics(self),
- TypeGenerics(self),
- self.where_clause.as_ref(),
- )
- }
- }
-
- #[cfg(feature = "printing")]
-+macro_rules! generics_wrapper_impls {
-+ ($ty:ident) => {
-+ #[cfg(feature = "clone-impls")]
-+ impl<'a> Clone for $ty<'a> {
-+ fn clone(&self) -> Self {
-+ $ty(self.0)
-+ }
-+ }
-+
-+ #[cfg(feature = "extra-traits")]
-+ impl<'a> Debug for $ty<'a> {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ formatter
-+ .debug_tuple(stringify!($ty))
-+ .field(self.0)
-+ .finish()
-+ }
-+ }
-+
-+ #[cfg(feature = "extra-traits")]
-+ impl<'a> Eq for $ty<'a> {}
-+
-+ #[cfg(feature = "extra-traits")]
-+ impl<'a> PartialEq for $ty<'a> {
-+ fn eq(&self, other: &Self) -> bool {
-+ self.0 == other.0
-+ }
-+ }
-+
-+ #[cfg(feature = "extra-traits")]
-+ impl<'a> Hash for $ty<'a> {
-+ fn hash<H: Hasher>(&self, state: &mut H) {
-+ self.0.hash(state);
-+ }
-+ }
-+ };
-+}
-+
-+#[cfg(feature = "printing")]
-+generics_wrapper_impls!(ImplGenerics);
-+#[cfg(feature = "printing")]
-+generics_wrapper_impls!(TypeGenerics);
-+#[cfg(feature = "printing")]
-+generics_wrapper_impls!(Turbofish);
-+
-+#[cfg(feature = "printing")]
- impl<'a> TypeGenerics<'a> {
- /// Turn a type's generics like `<X, Y>` into a turbofish like `::<X, Y>`.
- ///
-- /// *This method is available if Syn is built with the `"derive"` or
-+ /// *This method is available only if Syn is built with the `"derive"` or
- /// `"full"` feature and the `"printing"` feature.*
- pub fn as_turbofish(&self) -> Turbofish {
- Turbofish(self.0)
- }
- }
-
- ast_struct! {
- /// A set of bound lifetimes: `for<'a, 'b, 'c>`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
-- #[derive(Default)]
- pub struct BoundLifetimes {
- pub for_token: Token![for],
- pub lt_token: Token![<],
- pub lifetimes: Punctuated<LifetimeDef, Token![,]>,
- pub gt_token: Token![>],
- }
- }
-
-+impl Default for BoundLifetimes {
-+ fn default() -> Self {
-+ BoundLifetimes {
-+ for_token: Default::default(),
-+ lt_token: Default::default(),
-+ lifetimes: Punctuated::new(),
-+ gt_token: Default::default(),
-+ }
-+ }
-+}
-+
- impl LifetimeDef {
- pub fn new(lifetime: Lifetime) -> Self {
- LifetimeDef {
- attrs: Vec::new(),
- lifetime,
- colon_token: None,
- bounds: Punctuated::new(),
- }
-@@ -386,122 +445,118 @@ impl From<Ident> for TypeParam {
- default: None,
- }
- }
- }
-
- ast_enum_of_structs! {
- /// A trait or lifetime used as a bound on a type parameter.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub enum TypeParamBound {
- Trait(TraitBound),
- Lifetime(Lifetime),
- }
- }
-
- ast_struct! {
- /// A trait used as a bound on a type parameter.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct TraitBound {
- pub paren_token: Option<token::Paren>,
- pub modifier: TraitBoundModifier,
- /// The `for<'a>` in `for<'a> Foo<&'a T>`
- pub lifetimes: Option<BoundLifetimes>,
- /// The `Foo<&'a T>` in `for<'a> Foo<&'a T>`
- pub path: Path,
- }
- }
-
- ast_enum! {
- /// A modifier on a trait bound, currently only used for the `?` in
- /// `?Sized`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
-- #[cfg_attr(feature = "clone-impls", derive(Copy))]
- pub enum TraitBoundModifier {
- None,
- Maybe(Token![?]),
- }
- }
-
- ast_struct! {
- /// A `where` clause in a definition: `where T: Deserialize<'de>, D:
- /// 'static`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct WhereClause {
- pub where_token: Token![where],
- pub predicates: Punctuated<WherePredicate, Token![,]>,
- }
- }
-
- ast_enum_of_structs! {
- /// A single predicate in a `where` clause: `T: Deserialize<'de>`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
-- //
-- // TODO: change syntax-tree-enum link to an intra rustdoc link, currently
-- // blocked on https://github.com/rust-lang/rust/issues/62833
- pub enum WherePredicate {
- /// A type predicate in a `where` clause: `for<'c> Foo<'c>: Trait<'c>`.
- Type(PredicateType),
-
- /// A lifetime predicate in a `where` clause: `'a: 'b + 'c`.
- Lifetime(PredicateLifetime),
-
- /// An equality predicate in a `where` clause (unsupported).
- Eq(PredicateEq),
- }
- }
-
- ast_struct! {
- /// A type predicate in a `where` clause: `for<'c> Foo<'c>: Trait<'c>`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct PredicateType {
- /// Any lifetimes from a `for` binding
- pub lifetimes: Option<BoundLifetimes>,
- /// The type being bounded
- pub bounded_ty: Type,
- pub colon_token: Token![:],
- /// Trait and lifetime bounds (`Clone+Send+'static`)
- pub bounds: Punctuated<TypeParamBound, Token![+]>,
- }
- }
-
- ast_struct! {
- /// A lifetime predicate in a `where` clause: `'a: 'b + 'c`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct PredicateLifetime {
- pub lifetime: Lifetime,
- pub colon_token: Token![:],
- pub bounds: Punctuated<Lifetime, Token![+]>,
- }
- }
-
- ast_struct! {
- /// An equality predicate in a `where` clause (unsupported).
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct PredicateEq {
- pub lhs_ty: Type,
- pub eq_token: Token![=],
- pub rhs_ty: Type,
- }
- }
-
-@@ -516,38 +571,36 @@ pub mod parsing {
- if !input.peek(Token![<]) {
- return Ok(Generics::default());
- }
-
- let lt_token: Token![<] = input.parse()?;
-
- let mut params = Punctuated::new();
- let mut allow_lifetime_param = true;
-- let mut allow_type_param = true;
- loop {
- if input.peek(Token![>]) {
- break;
- }
-
- let attrs = input.call(Attribute::parse_outer)?;
- let lookahead = input.lookahead1();
- if allow_lifetime_param && lookahead.peek(Lifetime) {
- params.push_value(GenericParam::Lifetime(LifetimeDef {
- attrs,
- ..input.parse()?
- }));
-- } else if allow_type_param && lookahead.peek(Ident) {
-+ } else if lookahead.peek(Ident) {
- allow_lifetime_param = false;
- params.push_value(GenericParam::Type(TypeParam {
- attrs,
- ..input.parse()?
- }));
- } else if lookahead.peek(Token![const]) {
- allow_lifetime_param = false;
-- allow_type_param = false;
- params.push_value(GenericParam::Const(ConstParam {
- attrs,
- ..input.parse()?
- }));
- } else {
- return Err(lookahead.error());
- }
-
-@@ -660,67 +713,63 @@ pub mod parsing {
- } else {
- Ok(None)
- }
- }
- }
-
- impl Parse for TypeParam {
- fn parse(input: ParseStream) -> Result<Self> {
-- let has_colon;
-- let has_default;
-- Ok(TypeParam {
-- attrs: input.call(Attribute::parse_outer)?,
-- ident: input.parse()?,
-- colon_token: {
-- if input.peek(Token![:]) {
-- has_colon = true;
-- Some(input.parse()?)
-- } else {
-- has_colon = false;
-- None
-+ let attrs = input.call(Attribute::parse_outer)?;
-+ let ident: Ident = input.parse()?;
-+ let colon_token: Option<Token![:]> = input.parse()?;
-+
-+ let begin_bound = input.fork();
-+ let mut is_maybe_const = false;
-+ let mut bounds = Punctuated::new();
-+ if colon_token.is_some() {
-+ loop {
-+ if input.peek(Token![,]) || input.peek(Token![>]) || input.peek(Token![=]) {
-+ break;
-+ }
-+ if input.peek(Token![?]) && input.peek2(Token![const]) {
-+ input.parse::<Token![?]>()?;
-+ input.parse::<Token![const]>()?;
-+ is_maybe_const = true;
-+ }
-+ let value: TypeParamBound = input.parse()?;
-+ bounds.push_value(value);
-+ if !input.peek(Token![+]) {
-+ break;
- }
-- },
-- bounds: {
-- let mut bounds = Punctuated::new();
-- if has_colon {
-- loop {
-- if input.peek(Token![,])
-- || input.peek(Token![>])
-- || input.peek(Token![=])
-- {
-- break;
-- }
-- let value = input.parse()?;
-- bounds.push_value(value);
-- if !input.peek(Token![+]) {
-- break;
-- }
-- let punct = input.parse()?;
-- bounds.push_punct(punct);
-- }
-- }
-- bounds
-- },
-- eq_token: {
-- if input.peek(Token![=]) {
-- has_default = true;
-- Some(input.parse()?)
-- } else {
-- has_default = false;
-- None
-- }
-- },
-- default: {
-- if has_default {
-- Some(input.parse()?)
-- } else {
-- None
-- }
-- },
-+ let punct: Token![+] = input.parse()?;
-+ bounds.push_punct(punct);
-+ }
-+ }
-+
-+ let mut eq_token: Option<Token![=]> = input.parse()?;
-+ let mut default = if eq_token.is_some() {
-+ Some(input.parse::<Type>()?)
-+ } else {
-+ None
-+ };
-+
-+ if is_maybe_const {
-+ bounds.clear();
-+ eq_token = None;
-+ default = Some(Type::Verbatim(verbatim::between(begin_bound, input)));
-+ }
-+
-+ Ok(TypeParam {
-+ attrs,
-+ ident,
-+ colon_token,
-+ bounds,
-+ eq_token,
-+ default,
- })
- }
- }
-
- impl Parse for TypeParamBound {
- fn parse(input: ParseStream) -> Result<Self> {
- if input.peek(Lifetime) {
- return input.parse().map(TypeParamBound::Lifetime);
-@@ -893,16 +942,18 @@ pub mod parsing {
- }
- }
-
- #[cfg(feature = "printing")]
- mod printing {
- use super::*;
-
- use proc_macro2::TokenStream;
-+ #[cfg(feature = "full")]
-+ use proc_macro2::TokenTree;
- use quote::{ToTokens, TokenStreamExt};
-
- use crate::attr::FilterAttrs;
- use crate::print::TokensOrDefault;
-
- impl ToTokens for Generics {
- fn to_tokens(&self, tokens: &mut TokenStream) {
- if self.params.is_empty() {
-@@ -1075,19 +1126,35 @@ mod printing {
- impl ToTokens for TypeParam {
- fn to_tokens(&self, tokens: &mut TokenStream) {
- tokens.append_all(self.attrs.outer());
- self.ident.to_tokens(tokens);
- if !self.bounds.is_empty() {
- TokensOrDefault(&self.colon_token).to_tokens(tokens);
- self.bounds.to_tokens(tokens);
- }
-- if self.default.is_some() {
-+ if let Some(default) = &self.default {
-+ #[cfg(feature = "full")]
-+ {
-+ if self.eq_token.is_none() {
-+ if let Type::Verbatim(default) = default {
-+ let mut iter = default.clone().into_iter();
-+ match (iter.next(), iter.next()) {
-+ (Some(TokenTree::Punct(ref q)), Some(TokenTree::Ident(ref c)))
-+ if q.as_char() == '?' && c == "const" =>
-+ {
-+ return default.to_tokens(tokens);
-+ }
-+ _ => {}
-+ }
-+ }
-+ }
-+ }
- TokensOrDefault(&self.eq_token).to_tokens(tokens);
-- self.default.to_tokens(tokens);
-+ default.to_tokens(tokens);
- }
- }
- }
-
- impl ToTokens for TraitBound {
- fn to_tokens(&self, tokens: &mut TokenStream) {
- let to_tokens = |tokens: &mut TokenStream| {
- self.modifier.to_tokens(tokens);
-@@ -1112,19 +1179,19 @@ mod printing {
-
- impl ToTokens for ConstParam {
- fn to_tokens(&self, tokens: &mut TokenStream) {
- tokens.append_all(self.attrs.outer());
- self.const_token.to_tokens(tokens);
- self.ident.to_tokens(tokens);
- self.colon_token.to_tokens(tokens);
- self.ty.to_tokens(tokens);
-- if self.default.is_some() {
-+ if let Some(default) = &self.default {
- TokensOrDefault(&self.eq_token).to_tokens(tokens);
-- self.default.to_tokens(tokens);
-+ default.to_tokens(tokens);
- }
- }
- }
-
- impl ToTokens for WhereClause {
- fn to_tokens(&self, tokens: &mut TokenStream) {
- if !self.predicates.is_empty() {
- self.where_token.to_tokens(tokens);
-diff --git a/third_party/rust/syn/src/item.rs b/third_party/rust/syn/src/item.rs
---- a/third_party/rust/syn/src/item.rs
-+++ b/third_party/rust/syn/src/item.rs
-@@ -1,32 +1,30 @@
- use super::*;
--use crate::derive::{Data, DeriveInput};
-+use crate::derive::{Data, DataEnum, DataStruct, DataUnion, DeriveInput};
- use crate::punctuated::Punctuated;
- use proc_macro2::TokenStream;
-
--#[cfg(feature = "extra-traits")]
--use crate::tt::TokenStreamHelper;
--#[cfg(feature = "extra-traits")]
--use std::hash::{Hash, Hasher};
-+#[cfg(feature = "parsing")]
-+use std::mem;
-
- ast_enum_of_structs! {
- /// Things that can appear directly inside of a module or scope.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
- //
- // TODO: change syntax-tree-enum link to an intra rustdoc link, currently
- // blocked on https://github.com/rust-lang/rust/issues/62833
-- pub enum Item #manual_extra_traits {
-+ pub enum Item {
- /// A constant item: `const MAX: u16 = 65535`.
- Const(ItemConst),
-
- /// An enum definition: `enum Foo<A, B> { A(A), B(B) }`.
- Enum(ItemEnum),
-
- /// An `extern crate` item: `extern crate serde`.
- ExternCrate(ItemExternCrate),
-@@ -78,90 +76,90 @@ ast_enum_of_structs! {
- #[doc(hidden)]
- __Nonexhaustive,
- }
- }
-
- ast_struct! {
- /// A constant item: `const MAX: u16 = 65535`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemConst {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub const_token: Token![const],
- pub ident: Ident,
- pub colon_token: Token![:],
- pub ty: Box<Type>,
- pub eq_token: Token![=],
- pub expr: Box<Expr>,
- pub semi_token: Token![;],
- }
- }
-
- ast_struct! {
- /// An enum definition: `enum Foo<A, B> { A(A), B(B) }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemEnum {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub enum_token: Token![enum],
- pub ident: Ident,
- pub generics: Generics,
- pub brace_token: token::Brace,
- pub variants: Punctuated<Variant, Token![,]>,
- }
- }
-
- ast_struct! {
- /// An `extern crate` item: `extern crate serde`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemExternCrate {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub extern_token: Token![extern],
- pub crate_token: Token![crate],
- pub ident: Ident,
- pub rename: Option<(Token![as], Ident)>,
- pub semi_token: Token![;],
- }
- }
-
- ast_struct! {
- /// A free-standing function: `fn process(n: usize) -> Result<()> { ...
- /// }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemFn {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub sig: Signature,
- pub block: Box<Block>,
- }
- }
-
- ast_struct! {
- /// A block of foreign items: `extern "C" { ... }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemForeignMod {
- pub attrs: Vec<Attribute>,
- pub abi: Abi,
- pub brace_token: token::Brace,
- pub items: Vec<ForeignItem>,
- }
- }
-
- ast_struct! {
- /// An impl block providing trait or associated items: `impl<A> Trait
- /// for Data<A> { ... }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemImpl {
- pub attrs: Vec<Attribute>,
- pub defaultness: Option<Token![default]>,
- pub unsafety: Option<Token![unsafe]>,
- pub impl_token: Token![impl],
- pub generics: Generics,
- /// Trait this impl implements.
- pub trait_: Option<(Option<Token![!]>, Path, Token![for])>,
-@@ -170,57 +168,57 @@ ast_struct! {
- pub brace_token: token::Brace,
- pub items: Vec<ImplItem>,
- }
- }
-
- ast_struct! {
- /// A macro invocation, which includes `macro_rules!` definitions.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemMacro {
- pub attrs: Vec<Attribute>,
- /// The `example` in `macro_rules! example { ... }`.
- pub ident: Option<Ident>,
- pub mac: Macro,
- pub semi_token: Option<Token![;]>,
- }
- }
-
- ast_struct! {
- /// A 2.0-style declarative macro introduced by the `macro` keyword.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-- pub struct ItemMacro2 #manual_extra_traits {
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
-+ pub struct ItemMacro2 {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub macro_token: Token![macro],
- pub ident: Ident,
- pub rules: TokenStream,
- }
- }
-
- ast_struct! {
- /// A module or module declaration: `mod m` or `mod m { ... }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemMod {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub mod_token: Token![mod],
- pub ident: Ident,
- pub content: Option<(token::Brace, Vec<Item>)>,
- pub semi: Option<Token![;]>,
- }
- }
-
- ast_struct! {
- /// A static item: `static BIKE: Shed = Shed(42)`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemStatic {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub static_token: Token![static],
- pub mutability: Option<Token![mut]>,
- pub ident: Ident,
- pub colon_token: Token![:],
- pub ty: Box<Type>,
-@@ -228,32 +226,32 @@ ast_struct! {
- pub expr: Box<Expr>,
- pub semi_token: Token![;],
- }
- }
-
- ast_struct! {
- /// A struct definition: `struct Foo<A> { x: A }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemStruct {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub struct_token: Token![struct],
- pub ident: Ident,
- pub generics: Generics,
- pub fields: Fields,
- pub semi_token: Option<Token![;]>,
- }
- }
-
- ast_struct! {
- /// A trait definition: `pub trait Iterator { ... }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemTrait {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub unsafety: Option<Token![unsafe]>,
- pub auto_token: Option<Token![auto]>,
- pub trait_token: Token![trait],
- pub ident: Ident,
- pub generics: Generics,
-@@ -262,212 +260,99 @@ ast_struct! {
- pub brace_token: token::Brace,
- pub items: Vec<TraitItem>,
- }
- }
-
- ast_struct! {
- /// A trait alias: `pub trait SharableIterator = Iterator + Sync`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemTraitAlias {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub trait_token: Token![trait],
- pub ident: Ident,
- pub generics: Generics,
- pub eq_token: Token![=],
- pub bounds: Punctuated<TypeParamBound, Token![+]>,
- pub semi_token: Token![;],
- }
- }
-
- ast_struct! {
- /// A type alias: `type Result<T> = std::result::Result<T, MyError>`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemType {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub type_token: Token![type],
- pub ident: Ident,
- pub generics: Generics,
- pub eq_token: Token![=],
- pub ty: Box<Type>,
- pub semi_token: Token![;],
- }
- }
-
- ast_struct! {
- /// A union definition: `union Foo<A, B> { x: A, y: B }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemUnion {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub union_token: Token![union],
- pub ident: Ident,
- pub generics: Generics,
- pub fields: FieldsNamed,
- }
- }
-
- ast_struct! {
- /// A use declaration: `use std::collections::HashMap`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ItemUse {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub use_token: Token![use],
- pub leading_colon: Option<Token![::]>,
- pub tree: UseTree,
- pub semi_token: Token![;],
- }
- }
-
--#[cfg(feature = "extra-traits")]
--impl Eq for Item {}
--
--#[cfg(feature = "extra-traits")]
--impl PartialEq for Item {
-- fn eq(&self, other: &Self) -> bool {
-- match (self, other) {
-- (Item::Const(this), Item::Const(other)) => this == other,
-- (Item::Enum(this), Item::Enum(other)) => this == other,
-- (Item::ExternCrate(this), Item::ExternCrate(other)) => this == other,
-- (Item::Fn(this), Item::Fn(other)) => this == other,
-- (Item::ForeignMod(this), Item::ForeignMod(other)) => this == other,
-- (Item::Impl(this), Item::Impl(other)) => this == other,
-- (Item::Macro(this), Item::Macro(other)) => this == other,
-- (Item::Macro2(this), Item::Macro2(other)) => this == other,
-- (Item::Mod(this), Item::Mod(other)) => this == other,
-- (Item::Static(this), Item::Static(other)) => this == other,
-- (Item::Struct(this), Item::Struct(other)) => this == other,
-- (Item::Trait(this), Item::Trait(other)) => this == other,
-- (Item::TraitAlias(this), Item::TraitAlias(other)) => this == other,
-- (Item::Type(this), Item::Type(other)) => this == other,
-- (Item::Union(this), Item::Union(other)) => this == other,
-- (Item::Use(this), Item::Use(other)) => this == other,
-- (Item::Verbatim(this), Item::Verbatim(other)) => {
-- TokenStreamHelper(this) == TokenStreamHelper(other)
-- }
-- _ => false,
-- }
-- }
--}
--
--#[cfg(feature = "extra-traits")]
--impl Hash for Item {
-- fn hash<H>(&self, state: &mut H)
-- where
-- H: Hasher,
-- {
-+impl Item {
-+ #[cfg(feature = "parsing")]
-+ pub(crate) fn replace_attrs(&mut self, new: Vec<Attribute>) -> Vec<Attribute> {
- match self {
-- Item::Const(item) => {
-- state.write_u8(0);
-- item.hash(state);
-- }
-- Item::Enum(item) => {
-- state.write_u8(1);
-- item.hash(state);
-- }
-- Item::ExternCrate(item) => {
-- state.write_u8(2);
-- item.hash(state);
-- }
-- Item::Fn(item) => {
-- state.write_u8(3);
-- item.hash(state);
-- }
-- Item::ForeignMod(item) => {
-- state.write_u8(4);
-- item.hash(state);
-- }
-- Item::Impl(item) => {
-- state.write_u8(5);
-- item.hash(state);
-- }
-- Item::Macro(item) => {
-- state.write_u8(6);
-- item.hash(state);
-- }
-- Item::Macro2(item) => {
-- state.write_u8(7);
-- item.hash(state);
-- }
-- Item::Mod(item) => {
-- state.write_u8(8);
-- item.hash(state);
-- }
-- Item::Static(item) => {
-- state.write_u8(9);
-- item.hash(state);
-- }
-- Item::Struct(item) => {
-- state.write_u8(10);
-- item.hash(state);
-- }
-- Item::Trait(item) => {
-- state.write_u8(11);
-- item.hash(state);
-- }
-- Item::TraitAlias(item) => {
-- state.write_u8(12);
-- item.hash(state);
-- }
-- Item::Type(item) => {
-- state.write_u8(13);
-- item.hash(state);
-- }
-- Item::Union(item) => {
-- state.write_u8(14);
-- item.hash(state);
-- }
-- Item::Use(item) => {
-- state.write_u8(15);
-- item.hash(state);
-- }
-- Item::Verbatim(item) => {
-- state.write_u8(16);
-- TokenStreamHelper(item).hash(state);
-- }
-+ Item::ExternCrate(ItemExternCrate { attrs, .. })
-+ | Item::Use(ItemUse { attrs, .. })
-+ | Item::Static(ItemStatic { attrs, .. })
-+ | Item::Const(ItemConst { attrs, .. })
-+ | Item::Fn(ItemFn { attrs, .. })
-+ | Item::Mod(ItemMod { attrs, .. })
-+ | Item::ForeignMod(ItemForeignMod { attrs, .. })
-+ | Item::Type(ItemType { attrs, .. })
-+ | Item::Struct(ItemStruct { attrs, .. })
-+ | Item::Enum(ItemEnum { attrs, .. })
-+ | Item::Union(ItemUnion { attrs, .. })
-+ | Item::Trait(ItemTrait { attrs, .. })
-+ | Item::TraitAlias(ItemTraitAlias { attrs, .. })
-+ | Item::Impl(ItemImpl { attrs, .. })
-+ | Item::Macro(ItemMacro { attrs, .. })
-+ | Item::Macro2(ItemMacro2 { attrs, .. }) => mem::replace(attrs, new),
-+ Item::Verbatim(_) => Vec::new(),
- Item::__Nonexhaustive => unreachable!(),
- }
- }
- }
-
--#[cfg(feature = "extra-traits")]
--impl Eq for ItemMacro2 {}
--
--#[cfg(feature = "extra-traits")]
--impl PartialEq for ItemMacro2 {
-- fn eq(&self, other: &Self) -> bool {
-- self.attrs == other.attrs
-- && self.vis == other.vis
-- && self.macro_token == other.macro_token
-- && self.ident == other.ident
-- && TokenStreamHelper(&self.rules) == TokenStreamHelper(&other.rules)
-- }
--}
--
--#[cfg(feature = "extra-traits")]
--impl Hash for ItemMacro2 {
-- fn hash<H>(&self, state: &mut H)
-- where
-- H: Hasher,
-- {
-- self.attrs.hash(state);
-- self.vis.hash(state);
-- self.macro_token.hash(state);
-- self.ident.hash(state);
-- TokenStreamHelper(&self.rules).hash(state);
-- }
--}
--
- impl From<DeriveInput> for Item {
- fn from(input: DeriveInput) -> Item {
- match input.data {
- Data::Struct(data) => Item::Struct(ItemStruct {
- attrs: input.attrs,
- vis: input.vis,
- struct_token: data.struct_token,
- ident: input.ident,
-@@ -491,20 +376,67 @@ impl From<DeriveInput> for Item {
- ident: input.ident,
- generics: input.generics,
- fields: data.fields,
- }),
- }
- }
- }
-
-+impl From<ItemStruct> for DeriveInput {
-+ fn from(input: ItemStruct) -> DeriveInput {
-+ DeriveInput {
-+ attrs: input.attrs,
-+ vis: input.vis,
-+ ident: input.ident,
-+ generics: input.generics,
-+ data: Data::Struct(DataStruct {
-+ struct_token: input.struct_token,
-+ fields: input.fields,
-+ semi_token: input.semi_token,
-+ }),
-+ }
-+ }
-+}
-+
-+impl From<ItemEnum> for DeriveInput {
-+ fn from(input: ItemEnum) -> DeriveInput {
-+ DeriveInput {
-+ attrs: input.attrs,
-+ vis: input.vis,
-+ ident: input.ident,
-+ generics: input.generics,
-+ data: Data::Enum(DataEnum {
-+ enum_token: input.enum_token,
-+ brace_token: input.brace_token,
-+ variants: input.variants,
-+ }),
-+ }
-+ }
-+}
-+
-+impl From<ItemUnion> for DeriveInput {
-+ fn from(input: ItemUnion) -> DeriveInput {
-+ DeriveInput {
-+ attrs: input.attrs,
-+ vis: input.vis,
-+ ident: input.ident,
-+ generics: input.generics,
-+ data: Data::Union(DataUnion {
-+ union_token: input.union_token,
-+ fields: input.fields,
-+ }),
-+ }
-+ }
-+}
-+
- ast_enum_of_structs! {
- /// A suffix of an import tree in a `use` item: `Type as Renamed` or `*`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
- //
- // TODO: change syntax-tree-enum link to an intra rustdoc link, currently
-@@ -525,77 +457,77 @@ ast_enum_of_structs! {
- /// A braced group of imports in a `use` item: `{A, B, C}`.
- Group(UseGroup),
- }
- }
-
- ast_struct! {
- /// A path prefix of imports in a `use` item: `std::...`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct UsePath {
- pub ident: Ident,
- pub colon2_token: Token![::],
- pub tree: Box<UseTree>,
- }
- }
-
- ast_struct! {
- /// An identifier imported by a `use` item: `HashMap`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct UseName {
- pub ident: Ident,
- }
- }
-
- ast_struct! {
- /// An renamed identifier imported by a `use` item: `HashMap as Map`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct UseRename {
- pub ident: Ident,
- pub as_token: Token![as],
- pub rename: Ident,
- }
- }
-
- ast_struct! {
- /// A glob import in a `use` item: `*`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct UseGlob {
- pub star_token: Token![*],
- }
- }
-
- ast_struct! {
- /// A braced group of imports in a `use` item: `{A, B, C}`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct UseGroup {
- pub brace_token: token::Brace,
- pub items: Punctuated<UseTree, Token![,]>,
- }
- }
-
- ast_enum_of_structs! {
- /// An item within an `extern` block.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
- //
- // TODO: change syntax-tree-enum link to an intra rustdoc link, currently
- // blocked on https://github.com/rust-lang/rust/issues/62833
-- pub enum ForeignItem #manual_extra_traits {
-+ pub enum ForeignItem {
- /// A foreign function in an `extern` block.
- Fn(ForeignItemFn),
-
- /// A foreign static item in an `extern` block: `static ext: u8`.
- Static(ForeignItemStatic),
-
- /// A foreign type in an `extern` block: `type void`.
- Type(ForeignItemType),
-@@ -609,130 +541,79 @@ ast_enum_of_structs! {
- #[doc(hidden)]
- __Nonexhaustive,
- }
- }
-
- ast_struct! {
- /// A foreign function in an `extern` block.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ForeignItemFn {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub sig: Signature,
- pub semi_token: Token![;],
- }
- }
-
- ast_struct! {
- /// A foreign static item in an `extern` block: `static ext: u8`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ForeignItemStatic {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub static_token: Token![static],
- pub mutability: Option<Token![mut]>,
- pub ident: Ident,
- pub colon_token: Token![:],
- pub ty: Box<Type>,
- pub semi_token: Token![;],
- }
- }
-
- ast_struct! {
- /// A foreign type in an `extern` block: `type void`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ForeignItemType {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub type_token: Token![type],
- pub ident: Ident,
- pub semi_token: Token![;],
- }
- }
-
- ast_struct! {
- /// A macro invocation within an extern block.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ForeignItemMacro {
- pub attrs: Vec<Attribute>,
- pub mac: Macro,
- pub semi_token: Option<Token![;]>,
- }
- }
-
--#[cfg(feature = "extra-traits")]
--impl Eq for ForeignItem {}
--
--#[cfg(feature = "extra-traits")]
--impl PartialEq for ForeignItem {
-- fn eq(&self, other: &Self) -> bool {
-- match (self, other) {
-- (ForeignItem::Fn(this), ForeignItem::Fn(other)) => this == other,
-- (ForeignItem::Static(this), ForeignItem::Static(other)) => this == other,
-- (ForeignItem::Type(this), ForeignItem::Type(other)) => this == other,
-- (ForeignItem::Macro(this), ForeignItem::Macro(other)) => this == other,
-- (ForeignItem::Verbatim(this), ForeignItem::Verbatim(other)) => {
-- TokenStreamHelper(this) == TokenStreamHelper(other)
-- }
-- _ => false,
-- }
-- }
--}
--
--#[cfg(feature = "extra-traits")]
--impl Hash for ForeignItem {
-- fn hash<H>(&self, state: &mut H)
-- where
-- H: Hasher,
-- {
-- match self {
-- ForeignItem::Fn(item) => {
-- state.write_u8(0);
-- item.hash(state);
-- }
-- ForeignItem::Static(item) => {
-- state.write_u8(1);
-- item.hash(state);
-- }
-- ForeignItem::Type(item) => {
-- state.write_u8(2);
-- item.hash(state);
-- }
-- ForeignItem::Macro(item) => {
-- state.write_u8(3);
-- item.hash(state);
-- }
-- ForeignItem::Verbatim(item) => {
-- state.write_u8(4);
-- TokenStreamHelper(item).hash(state);
-- }
-- ForeignItem::__Nonexhaustive => unreachable!(),
-- }
-- }
--}
--
- ast_enum_of_structs! {
- /// An item declaration within the definition of a trait.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
- //
- // TODO: change syntax-tree-enum link to an intra rustdoc link, currently
- // blocked on https://github.com/rust-lang/rust/issues/62833
-- pub enum TraitItem #manual_extra_traits {
-+ pub enum TraitItem {
- /// An associated constant within the definition of a trait.
- Const(TraitItemConst),
-
- /// A trait method within the definition of a trait.
- Method(TraitItemMethod),
-
- /// An associated type within the definition of a trait.
- Type(TraitItemType),
-@@ -746,132 +627,81 @@ ast_enum_of_structs! {
- #[doc(hidden)]
- __Nonexhaustive,
- }
- }
-
- ast_struct! {
- /// An associated constant within the definition of a trait.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct TraitItemConst {
- pub attrs: Vec<Attribute>,
- pub const_token: Token![const],
- pub ident: Ident,
- pub colon_token: Token![:],
- pub ty: Type,
- pub default: Option<(Token![=], Expr)>,
- pub semi_token: Token![;],
- }
- }
-
- ast_struct! {
- /// A trait method within the definition of a trait.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct TraitItemMethod {
- pub attrs: Vec<Attribute>,
- pub sig: Signature,
- pub default: Option<Block>,
- pub semi_token: Option<Token![;]>,
- }
- }
-
- ast_struct! {
- /// An associated type within the definition of a trait.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct TraitItemType {
- pub attrs: Vec<Attribute>,
- pub type_token: Token![type],
- pub ident: Ident,
- pub generics: Generics,
- pub colon_token: Option<Token![:]>,
- pub bounds: Punctuated<TypeParamBound, Token![+]>,
- pub default: Option<(Token![=], Type)>,
- pub semi_token: Token![;],
- }
- }
-
- ast_struct! {
- /// A macro invocation within the definition of a trait.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct TraitItemMacro {
- pub attrs: Vec<Attribute>,
- pub mac: Macro,
- pub semi_token: Option<Token![;]>,
- }
- }
-
--#[cfg(feature = "extra-traits")]
--impl Eq for TraitItem {}
--
--#[cfg(feature = "extra-traits")]
--impl PartialEq for TraitItem {
-- fn eq(&self, other: &Self) -> bool {
-- match (self, other) {
-- (TraitItem::Const(this), TraitItem::Const(other)) => this == other,
-- (TraitItem::Method(this), TraitItem::Method(other)) => this == other,
-- (TraitItem::Type(this), TraitItem::Type(other)) => this == other,
-- (TraitItem::Macro(this), TraitItem::Macro(other)) => this == other,
-- (TraitItem::Verbatim(this), TraitItem::Verbatim(other)) => {
-- TokenStreamHelper(this) == TokenStreamHelper(other)
-- }
-- _ => false,
-- }
-- }
--}
--
--#[cfg(feature = "extra-traits")]
--impl Hash for TraitItem {
-- fn hash<H>(&self, state: &mut H)
-- where
-- H: Hasher,
-- {
-- match self {
-- TraitItem::Const(item) => {
-- state.write_u8(0);
-- item.hash(state);
-- }
-- TraitItem::Method(item) => {
-- state.write_u8(1);
-- item.hash(state);
-- }
-- TraitItem::Type(item) => {
-- state.write_u8(2);
-- item.hash(state);
-- }
-- TraitItem::Macro(item) => {
-- state.write_u8(3);
-- item.hash(state);
-- }
-- TraitItem::Verbatim(item) => {
-- state.write_u8(4);
-- TokenStreamHelper(item).hash(state);
-- }
-- TraitItem::__Nonexhaustive => unreachable!(),
-- }
-- }
--}
--
- ast_enum_of_structs! {
- /// An item within an impl block.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
- //
- // TODO: change syntax-tree-enum link to an intra rustdoc link, currently
- // blocked on https://github.com/rust-lang/rust/issues/62833
-- pub enum ImplItem #manual_extra_traits {
-+ pub enum ImplItem {
- /// An associated constant within an impl block.
- Const(ImplItemConst),
-
- /// A method within an impl block.
- Method(ImplItemMethod),
-
- /// An associated type within an impl block.
- Type(ImplItemType),
-@@ -885,17 +715,17 @@ ast_enum_of_structs! {
- #[doc(hidden)]
- __Nonexhaustive,
- }
- }
-
- ast_struct! {
- /// An associated constant within an impl block.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ImplItemConst {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub defaultness: Option<Token![default]>,
- pub const_token: Token![const],
- pub ident: Ident,
- pub colon_token: Token![:],
- pub ty: Type,
-@@ -903,144 +733,117 @@ ast_struct! {
- pub expr: Expr,
- pub semi_token: Token![;],
- }
- }
-
- ast_struct! {
- /// A method within an impl block.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ImplItemMethod {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub defaultness: Option<Token![default]>,
- pub sig: Signature,
- pub block: Block,
- }
- }
-
- ast_struct! {
- /// An associated type within an impl block.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ImplItemType {
- pub attrs: Vec<Attribute>,
- pub vis: Visibility,
- pub defaultness: Option<Token![default]>,
- pub type_token: Token![type],
- pub ident: Ident,
- pub generics: Generics,
- pub eq_token: Token![=],
- pub ty: Type,
- pub semi_token: Token![;],
- }
- }
-
- ast_struct! {
- /// A macro invocation within an impl block.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct ImplItemMacro {
- pub attrs: Vec<Attribute>,
- pub mac: Macro,
- pub semi_token: Option<Token![;]>,
- }
- }
-
--#[cfg(feature = "extra-traits")]
--impl Eq for ImplItem {}
--
--#[cfg(feature = "extra-traits")]
--impl PartialEq for ImplItem {
-- fn eq(&self, other: &Self) -> bool {
-- match (self, other) {
-- (ImplItem::Const(this), ImplItem::Const(other)) => this == other,
-- (ImplItem::Method(this), ImplItem::Method(other)) => this == other,
-- (ImplItem::Type(this), ImplItem::Type(other)) => this == other,
-- (ImplItem::Macro(this), ImplItem::Macro(other)) => this == other,
-- (ImplItem::Verbatim(this), ImplItem::Verbatim(other)) => {
-- TokenStreamHelper(this) == TokenStreamHelper(other)
-- }
-- _ => false,
-- }
-- }
--}
--
--#[cfg(feature = "extra-traits")]
--impl Hash for ImplItem {
-- fn hash<H>(&self, state: &mut H)
-- where
-- H: Hasher,
-- {
-- match self {
-- ImplItem::Const(item) => {
-- state.write_u8(0);
-- item.hash(state);
-- }
-- ImplItem::Method(item) => {
-- state.write_u8(1);
-- item.hash(state);
-- }
-- ImplItem::Type(item) => {
-- state.write_u8(2);
-- item.hash(state);
-- }
-- ImplItem::Macro(item) => {
-- state.write_u8(3);
-- item.hash(state);
-- }
-- ImplItem::Verbatim(item) => {
-- state.write_u8(4);
-- TokenStreamHelper(item).hash(state);
-- }
-- ImplItem::__Nonexhaustive => unreachable!(),
-- }
-- }
--}
--
- ast_struct! {
- /// A function signature in a trait or implementation: `unsafe fn
- /// initialize(&self)`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct Signature {
- pub constness: Option<Token![const]>,
- pub asyncness: Option<Token![async]>,
- pub unsafety: Option<Token![unsafe]>,
- pub abi: Option<Abi>,
- pub fn_token: Token![fn],
- pub ident: Ident,
- pub generics: Generics,
- pub paren_token: token::Paren,
- pub inputs: Punctuated<FnArg, Token![,]>,
- pub variadic: Option<Variadic>,
- pub output: ReturnType,
- }
- }
-
-+impl Signature {
-+ /// A method's `self` receiver, such as `&self` or `self: Box<Self>`.
-+ pub fn receiver(&self) -> Option<&FnArg> {
-+ let arg = self.inputs.first()?;
-+ match arg {
-+ FnArg::Receiver(_) => Some(arg),
-+ FnArg::Typed(PatType { pat, .. }) => {
-+ if let Pat::Ident(PatIdent { ident, .. }) = &**pat {
-+ if ident == "self" {
-+ return Some(arg);
-+ }
-+ }
-+ None
-+ }
-+ }
-+ }
-+}
-+
- ast_enum_of_structs! {
- /// An argument in a function signature: the `n: usize` in `fn f(n: usize)`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub enum FnArg {
- /// The `self` argument of an associated method, whether taken by value
- /// or by reference.
-+ ///
-+ /// Note that `self` receivers with a specified type, such as `self:
-+ /// Box<Self>`, are parsed as a `FnArg::Typed`.
- Receiver(Receiver),
-
- /// A function argument accepted by pattern and type.
- Typed(PatType),
- }
- }
-
- ast_struct! {
- /// The `self` argument of an associated method, whether taken by value
- /// or by reference.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// Note that `self` receivers with a specified type, such as `self:
-+ /// Box<Self>`, are parsed as a `FnArg::Typed`.
-+ ///
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct Receiver {
- pub attrs: Vec<Attribute>,
- pub reference: Option<(Token![&], Option<Lifetime>)>,
- pub mutability: Option<Token![mut]>,
- pub self_token: Token![self],
- }
- }
-
-@@ -1051,149 +854,233 @@ impl Receiver {
- }
-
- #[cfg(feature = "parsing")]
- pub mod parsing {
- use super::*;
-
- use crate::ext::IdentExt;
- use crate::parse::discouraged::Speculative;
-- use crate::parse::{Parse, ParseStream, Result};
-+ use crate::parse::{Parse, ParseBuffer, ParseStream, Result};
-+ use crate::token::Brace;
- use proc_macro2::{Delimiter, Group, Punct, Spacing, TokenTree};
- use std::iter::{self, FromIterator};
-
- crate::custom_keyword!(existential);
-
- impl Parse for Item {
- fn parse(input: ParseStream) -> Result<Self> {
-+ let begin = input.fork();
- let mut attrs = input.call(Attribute::parse_outer)?;
- let ahead = input.fork();
- let vis: Visibility = ahead.parse()?;
-
- let lookahead = ahead.lookahead1();
-- let mut item = if lookahead.peek(Token![extern]) {
-+ let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead) {
-+ let vis: Visibility = input.parse()?;
-+ let sig = parse_signature(input)?;
-+ if input.peek(Token![;]) {
-+ input.parse::<Token![;]>()?;
-+ Ok(Item::Verbatim(verbatim::between(begin, input)))
-+ } else {
-+ parse_rest_of_fn(input, Vec::new(), vis, sig).map(Item::Fn)
-+ }
-+ } else if lookahead.peek(Token![extern]) {
- ahead.parse::<Token![extern]>()?;
- let lookahead = ahead.lookahead1();
- if lookahead.peek(Token![crate]) {
- input.parse().map(Item::ExternCrate)
-- } else if lookahead.peek(Token![fn]) {
-- input.parse().map(Item::Fn)
- } else if lookahead.peek(token::Brace) {
- input.parse().map(Item::ForeignMod)
- } else if lookahead.peek(LitStr) {
- ahead.parse::<LitStr>()?;
- let lookahead = ahead.lookahead1();
- if lookahead.peek(token::Brace) {
- input.parse().map(Item::ForeignMod)
-- } else if lookahead.peek(Token![fn]) {
-- input.parse().map(Item::Fn)
- } else {
- Err(lookahead.error())
- }
- } else {
- Err(lookahead.error())
- }
- } else if lookahead.peek(Token![use]) {
- input.parse().map(Item::Use)
- } else if lookahead.peek(Token![static]) {
-- input.parse().map(Item::Static)
-+ let vis = input.parse()?;
-+ let static_token = input.parse()?;
-+ let mutability = input.parse()?;
-+ let ident = input.parse()?;
-+ let colon_token = input.parse()?;
-+ let ty = input.parse()?;
-+ if input.peek(Token![;]) {
-+ input.parse::<Token![;]>()?;
-+ Ok(Item::Verbatim(verbatim::between(begin, input)))
-+ } else {
-+ Ok(Item::Static(ItemStatic {
-+ attrs: Vec::new(),
-+ vis,
-+ static_token,
-+ mutability,
-+ ident,
-+ colon_token,
-+ ty,
-+ eq_token: input.parse()?,
-+ expr: input.parse()?,
-+ semi_token: input.parse()?,
-+ }))
-+ }
- } else if lookahead.peek(Token![const]) {
- ahead.parse::<Token![const]>()?;
- let lookahead = ahead.lookahead1();
- if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
-- input.parse().map(Item::Const)
-- } else if lookahead.peek(Token![unsafe])
-- || lookahead.peek(Token![async])
-- || lookahead.peek(Token![extern])
-- || lookahead.peek(Token![fn])
-- {
-- input.parse().map(Item::Fn)
-+ let vis = input.parse()?;
-+ let const_token = input.parse()?;
-+ let ident = {
-+ let lookahead = input.lookahead1();
-+ if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
-+ input.call(Ident::parse_any)?
-+ } else {
-+ return Err(lookahead.error());
-+ }
-+ };
-+ let colon_token = input.parse()?;
-+ let ty = input.parse()?;
-+ if input.peek(Token![;]) {
-+ input.parse::<Token![;]>()?;
-+ Ok(Item::Verbatim(verbatim::between(begin, input)))
-+ } else {
-+ Ok(Item::Const(ItemConst {
-+ attrs: Vec::new(),
-+ vis,
-+ const_token,
-+ ident,
-+ colon_token,
-+ ty,
-+ eq_token: input.parse()?,
-+ expr: input.parse()?,
-+ semi_token: input.parse()?,
-+ }))
-+ }
- } else {
- Err(lookahead.error())
- }
- } else if lookahead.peek(Token![unsafe]) {
- ahead.parse::<Token![unsafe]>()?;
- let lookahead = ahead.lookahead1();
- if lookahead.peek(Token![trait])
- || lookahead.peek(Token![auto]) && ahead.peek2(Token![trait])
- {
- input.parse().map(Item::Trait)
- } else if lookahead.peek(Token![impl]) {
-- input.parse().map(Item::Impl)
-- } else if lookahead.peek(Token![async])
-- || lookahead.peek(Token![extern])
-- || lookahead.peek(Token![fn])
-- {
-- input.parse().map(Item::Fn)
-+ let allow_const_impl = true;
-+ if let Some(item) = parse_impl(input, allow_const_impl)? {
-+ Ok(Item::Impl(item))
-+ } else {
-+ Ok(Item::Verbatim(verbatim::between(begin, input)))
-+ }
- } else {
- Err(lookahead.error())
- }
-- } else if lookahead.peek(Token![async]) || lookahead.peek(Token![fn]) {
-- input.parse().map(Item::Fn)
- } else if lookahead.peek(Token![mod]) {
- input.parse().map(Item::Mod)
- } else if lookahead.peek(Token![type]) {
-- input.parse().map(Item::Type)
-+ parse_item_type(begin, input)
- } else if lookahead.peek(existential) {
- input.call(item_existential).map(Item::Verbatim)
- } else if lookahead.peek(Token![struct]) {
- input.parse().map(Item::Struct)
- } else if lookahead.peek(Token![enum]) {
- input.parse().map(Item::Enum)
- } else if lookahead.peek(Token![union]) && ahead.peek2(Ident) {
- input.parse().map(Item::Union)
- } else if lookahead.peek(Token![trait]) {
- input.call(parse_trait_or_trait_alias)
- } else if lookahead.peek(Token![auto]) && ahead.peek2(Token![trait]) {
- input.parse().map(Item::Trait)
- } else if lookahead.peek(Token![impl])
- || lookahead.peek(Token![default]) && !ahead.peek2(Token![!])
- {
-- input.parse().map(Item::Impl)
-+ let allow_const_impl = true;
-+ if let Some(item) = parse_impl(input, allow_const_impl)? {
-+ Ok(Item::Impl(item))
-+ } else {
-+ Ok(Item::Verbatim(verbatim::between(begin, input)))
-+ }
- } else if lookahead.peek(Token![macro]) {
- input.parse().map(Item::Macro2)
- } else if vis.is_inherited()
- && (lookahead.peek(Ident)
- || lookahead.peek(Token![self])
- || lookahead.peek(Token![super])
-- || lookahead.peek(Token![extern])
- || lookahead.peek(Token![crate])
- || lookahead.peek(Token![::]))
- {
- input.parse().map(Item::Macro)
- } else {
- Err(lookahead.error())
- }?;
-
-- {
-- let item_attrs = match &mut item {
-- Item::ExternCrate(item) => &mut item.attrs,
-- Item::Use(item) => &mut item.attrs,
-- Item::Static(item) => &mut item.attrs,
-- Item::Const(item) => &mut item.attrs,
-- Item::Fn(item) => &mut item.attrs,
-- Item::Mod(item) => &mut item.attrs,
-- Item::ForeignMod(item) => &mut item.attrs,
-- Item::Type(item) => &mut item.attrs,
-- Item::Struct(item) => &mut item.attrs,
-- Item::Enum(item) => &mut item.attrs,
-- Item::Union(item) => &mut item.attrs,
-- Item::Trait(item) => &mut item.attrs,
-- Item::TraitAlias(item) => &mut item.attrs,
-- Item::Impl(item) => &mut item.attrs,
-- Item::Macro(item) => &mut item.attrs,
-- Item::Macro2(item) => &mut item.attrs,
-- Item::Verbatim(_) => return Ok(item),
-- Item::__Nonexhaustive => unreachable!(),
-- };
-- attrs.extend(item_attrs.drain(..));
-- *item_attrs = attrs;
-+ attrs.extend(item.replace_attrs(Vec::new()));
-+ item.replace_attrs(attrs);
-+ Ok(item)
-+ }
-+ }
-+
-+ struct FlexibleItemType {
-+ vis: Visibility,
-+ defaultness: Option<Token![default]>,
-+ type_token: Token![type],
-+ ident: Ident,
-+ generics: Generics,
-+ colon_token: Option<Token![:]>,
-+ bounds: Punctuated<TypeParamBound, Token![+]>,
-+ ty: Option<(Token![=], Type)>,
-+ semi_token: Token![;],
-+ }
-+
-+ impl Parse for FlexibleItemType {
-+ fn parse(input: ParseStream) -> Result<Self> {
-+ let vis: Visibility = input.parse()?;
-+ let defaultness: Option<Token![default]> = input.parse()?;
-+ let type_token: Token![type] = input.parse()?;
-+ let ident: Ident = input.parse()?;
-+ let mut generics: Generics = input.parse()?;
-+ let colon_token: Option<Token![:]> = input.parse()?;
-+ let mut bounds = Punctuated::new();
-+ if colon_token.is_some() {
-+ loop {
-+ bounds.push_value(input.parse::<TypeParamBound>()?);
-+ if input.peek(Token![where]) || input.peek(Token![=]) || input.peek(Token![;]) {
-+ break;
-+ }
-+ bounds.push_punct(input.parse::<Token![+]>()?);
-+ if input.peek(Token![where]) || input.peek(Token![=]) || input.peek(Token![;]) {
-+ break;
-+ }
-+ }
- }
-+ generics.where_clause = input.parse()?;
-+ let ty = if let Some(eq_token) = input.parse()? {
-+ Some((eq_token, input.parse::<Type>()?))
-+ } else {
-+ None
-+ };
-+ let semi_token: Token![;] = input.parse()?;
-
-- Ok(item)
-+ Ok(FlexibleItemType {
-+ vis,
-+ defaultness,
-+ type_token,
-+ ident,
-+ generics,
-+ colon_token,
-+ bounds,
-+ ty,
-+ semi_token,
-+ })
- }
- }
-
- impl Parse for ItemMacro {
- fn parse(input: ParseStream) -> Result<Self> {
- let attrs = input.call(Attribute::parse_outer)?;
- let path = input.call(Path::parse_mod_style)?;
- let bang_token: Token![!] = input.parse()?;
-@@ -1305,17 +1192,16 @@ pub mod parsing {
-
- impl Parse for UseTree {
- fn parse(input: ParseStream) -> Result<UseTree> {
- let lookahead = input.lookahead1();
- if lookahead.peek(Ident)
- || lookahead.peek(Token![self])
- || lookahead.peek(Token![super])
- || lookahead.peek(Token![crate])
-- || lookahead.peek(Token![extern])
- {
- let ident = input.call(Ident::parse_any)?;
- if input.peek(Token![::]) {
- Ok(UseTree::Path(UsePath {
- ident,
- colon2_token: input.parse()?,
- tree: Box::new(input.parse()?),
- }))
-@@ -1387,77 +1273,134 @@ pub mod parsing {
- ty: input.parse()?,
- eq_token: input.parse()?,
- expr: input.parse()?,
- semi_token: input.parse()?,
- })
- }
- }
-
-+ fn pop_variadic(args: &mut Punctuated<FnArg, Token![,]>) -> Option<Variadic> {
-+ let trailing_punct = args.trailing_punct();
-+
-+ let last = match args.last_mut()? {
-+ FnArg::Typed(last) => last,
-+ _ => return None,
-+ };
-+
-+ let ty = match last.ty.as_ref() {
-+ Type::Verbatim(ty) => ty,
-+ _ => return None,
-+ };
-+
-+ let mut variadic = Variadic {
-+ attrs: Vec::new(),
-+ dots: parse2(ty.clone()).ok()?,
-+ };
-+
-+ if let Pat::Verbatim(pat) = last.pat.as_ref() {
-+ if pat.to_string() == "..." && !trailing_punct {
-+ variadic.attrs = mem::replace(&mut last.attrs, Vec::new());
-+ args.pop();
-+ }
-+ }
-+
-+ Some(variadic)
-+ }
-+
-+ fn variadic_to_tokens(dots: &Token![...]) -> TokenStream {
-+ TokenStream::from_iter(vec![
-+ TokenTree::Punct({
-+ let mut dot = Punct::new('.', Spacing::Joint);
-+ dot.set_span(dots.spans[0]);
-+ dot
-+ }),
-+ TokenTree::Punct({
-+ let mut dot = Punct::new('.', Spacing::Joint);
-+ dot.set_span(dots.spans[1]);
-+ dot
-+ }),
-+ TokenTree::Punct({
-+ let mut dot = Punct::new('.', Spacing::Alone);
-+ dot.set_span(dots.spans[2]);
-+ dot
-+ }),
-+ ])
-+ }
-+
-+ fn peek_signature(input: ParseStream) -> bool {
-+ let fork = input.fork();
-+ fork.parse::<Option<Token![const]>>().is_ok()
-+ && fork.parse::<Option<Token![async]>>().is_ok()
-+ && fork.parse::<Option<Token![unsafe]>>().is_ok()
-+ && fork.parse::<Option<Abi>>().is_ok()
-+ && fork.peek(Token![fn])
-+ }
-+
-+ fn parse_signature(input: ParseStream) -> Result<Signature> {
-+ let constness: Option<Token![const]> = input.parse()?;
-+ let asyncness: Option<Token![async]> = input.parse()?;
-+ let unsafety: Option<Token![unsafe]> = input.parse()?;
-+ let abi: Option<Abi> = input.parse()?;
-+ let fn_token: Token![fn] = input.parse()?;
-+ let ident: Ident = input.parse()?;
-+ let generics: Generics = input.parse()?;
-+
-+ let content;
-+ let paren_token = parenthesized!(content in input);
-+ let mut inputs = parse_fn_args(&content)?;
-+ let variadic = pop_variadic(&mut inputs);
-+
-+ let output: ReturnType = input.parse()?;
-+ let where_clause: Option<WhereClause> = input.parse()?;
-+
-+ Ok(Signature {
-+ constness,
-+ asyncness,
-+ unsafety,
-+ abi,
-+ fn_token,
-+ ident,
-+ paren_token,
-+ inputs,
-+ output,
-+ variadic,
-+ generics: Generics {
-+ where_clause,
-+ ..generics
-+ },
-+ })
-+ }
-+
- impl Parse for ItemFn {
- fn parse(input: ParseStream) -> Result<Self> {
- let outer_attrs = input.call(Attribute::parse_outer)?;
- let vis: Visibility = input.parse()?;
-- let constness: Option<Token![const]> = input.parse()?;
-- let asyncness: Option<Token![async]> = input.parse()?;
-- let unsafety: Option<Token![unsafe]> = input.parse()?;
-- let abi: Option<Abi> = input.parse()?;
-- let fn_token: Token![fn] = input.parse()?;
-- let ident: Ident = input.parse()?;
-- let generics: Generics = input.parse()?;
--
-- let content;
-- let paren_token = parenthesized!(content in input);
-- let inputs = content.parse_terminated(FnArg::parse)?;
-- let variadic = inputs.last().as_ref().and_then(get_variadic);
--
-- fn get_variadic(input: &&FnArg) -> Option<Variadic> {
-- if let FnArg::Typed(PatType { ty, .. }) = input {
-- if let Type::Verbatim(tokens) = &**ty {
-- if let Ok(dots) = parse2(tokens.clone()) {
-- return Some(Variadic {
-- attrs: Vec::new(),
-- dots,
-- });
-- }
-- }
-- }
-- None
-- }
-+ let sig = parse_signature(input)?;
-+ parse_rest_of_fn(input, outer_attrs, vis, sig)
-+ }
-+ }
-
-- let output: ReturnType = input.parse()?;
-- let where_clause: Option<WhereClause> = input.parse()?;
--
-- let content;
-- let brace_token = braced!(content in input);
-- let inner_attrs = content.call(Attribute::parse_inner)?;
-- let stmts = content.call(Block::parse_within)?;
-+ fn parse_rest_of_fn(
-+ input: ParseStream,
-+ outer_attrs: Vec<Attribute>,
-+ vis: Visibility,
-+ sig: Signature,
-+ ) -> Result<ItemFn> {
-+ let content;
-+ let brace_token = braced!(content in input);
-+ let inner_attrs = content.call(Attribute::parse_inner)?;
-+ let stmts = content.call(Block::parse_within)?;
-
-- Ok(ItemFn {
-- attrs: private::attrs(outer_attrs, inner_attrs),
-- vis,
-- sig: Signature {
-- constness,
-- asyncness,
-- unsafety,
-- abi,
-- fn_token,
-- ident,
-- paren_token,
-- inputs,
-- output,
-- variadic,
-- generics: Generics {
-- where_clause,
-- ..generics
-- },
-- },
-- block: Box::new(Block { brace_token, stmts }),
-- })
-- }
-+ Ok(ItemFn {
-+ attrs: private::attrs(outer_attrs, inner_attrs),
-+ vis,
-+ sig,
-+ block: Box::new(Block { brace_token, stmts }),
-+ })
- }
-
- impl Parse for FnArg {
- fn parse(input: ParseStream) -> Result<Self> {
- let attrs = input.call(Attribute::parse_outer)?;
-
- let ahead = input.fork();
- if let Ok(mut receiver) = ahead.parse::<Receiver>() {
-@@ -1486,36 +1429,89 @@ pub mod parsing {
- }
- },
- mutability: input.parse()?,
- self_token: input.parse()?,
- })
- }
- }
-
-+ fn parse_fn_args(input: ParseStream) -> Result<Punctuated<FnArg, Token![,]>> {
-+ let mut args = Punctuated::new();
-+ let mut has_receiver = false;
-+
-+ while !input.is_empty() {
-+ let attrs = input.call(Attribute::parse_outer)?;
-+
-+ let arg = if let Some(dots) = input.parse::<Option<Token![...]>>()? {
-+ FnArg::Typed(PatType {
-+ attrs,
-+ pat: Box::new(Pat::Verbatim(variadic_to_tokens(&dots))),
-+ colon_token: Token,
-+ ty: Box::new(Type::Verbatim(variadic_to_tokens(&dots))),
-+ })
-+ } else {
-+ let mut arg: FnArg = input.parse()?;
-+ match &mut arg {
-+ FnArg::Receiver(receiver) if has_receiver => {
-+ return Err(Error::new(
-+ receiver.self_token.span,
-+ "unexpected second method receiver",
-+ ));
-+ }
-+ FnArg::Receiver(receiver) if !args.is_empty() => {
-+ return Err(Error::new(
-+ receiver.self_token.span,
-+ "unexpected method receiver",
-+ ));
-+ }
-+ FnArg::Receiver(receiver) => {
-+ has_receiver = true;
-+ receiver.attrs = attrs;
-+ }
-+ FnArg::Typed(arg) => arg.attrs = attrs,
-+ }
-+ arg
-+ };
-+ args.push_value(arg);
-+
-+ if input.is_empty() {
-+ break;
-+ }
-+
-+ let comma: Token![,] = input.parse()?;
-+ args.push_punct(comma);
-+ }
-+
-+ Ok(args)
-+ }
-+
- fn fn_arg_typed(input: ParseStream) -> Result<PatType> {
-+ // Hack to parse pre-2018 syntax in
-+ // test/ui/rfc-2565-param-attrs/param-attrs-pretty.rs
-+ // because the rest of the test case is valuable.
-+ if input.peek(Ident) && input.peek2(Token![<]) {
-+ let span = input.fork().parse::<Ident>()?.span();
-+ return Ok(PatType {
-+ attrs: Vec::new(),
-+ pat: Box::new(Pat::Wild(PatWild {
-+ attrs: Vec::new(),
-+ underscore_token: Token,
-+ })),
-+ colon_token: Token,
-+ ty: input.parse()?,
-+ });
-+ }
-+
- Ok(PatType {
- attrs: Vec::new(),
-- pat: input.parse()?,
-+ pat: Box::new(pat::parsing::multi_pat(input)?),
- colon_token: input.parse()?,
- ty: Box::new(match input.parse::<Option<Token![...]>>()? {
-- Some(dot3) => {
-- let args = vec![
-- TokenTree::Punct(Punct::new('.', Spacing::Joint)),
-- TokenTree::Punct(Punct::new('.', Spacing::Joint)),
-- TokenTree::Punct(Punct::new('.', Spacing::Alone)),
-- ];
-- let tokens = TokenStream::from_iter(args.into_iter().zip(&dot3.spans).map(
-- |(mut arg, span)| {
-- arg.set_span(*span);
-- arg
-- },
-- ));
-- Type::Verbatim(tokens)
-- }
-+ Some(dot3) => Type::Verbatim(variadic_to_tokens(&dot3)),
- None => input.parse()?,
- }),
- })
- }
-
- impl Parse for ItemMod {
- fn parse(input: ParseStream) -> Result<Self> {
- let outer_attrs = input.call(Attribute::parse_outer)?;
-@@ -1576,109 +1572,103 @@ pub mod parsing {
- brace_token,
- items,
- })
- }
- }
-
- impl Parse for ForeignItem {
- fn parse(input: ParseStream) -> Result<Self> {
-+ let begin = input.fork();
- let mut attrs = input.call(Attribute::parse_outer)?;
- let ahead = input.fork();
- let vis: Visibility = ahead.parse()?;
-
- let lookahead = ahead.lookahead1();
-- let mut item = if lookahead.peek(Token![fn]) {
-- input.parse().map(ForeignItem::Fn)
-+ let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead) {
-+ let vis: Visibility = input.parse()?;
-+ let sig = parse_signature(input)?;
-+ if input.peek(token::Brace) {
-+ let content;
-+ braced!(content in input);
-+ content.call(Attribute::parse_inner)?;
-+ content.call(Block::parse_within)?;
-+
-+ Ok(ForeignItem::Verbatim(verbatim::between(begin, input)))
-+ } else {
-+ Ok(ForeignItem::Fn(ForeignItemFn {
-+ attrs: Vec::new(),
-+ vis,
-+ sig,
-+ semi_token: input.parse()?,
-+ }))
-+ }
- } else if lookahead.peek(Token![static]) {
-- input.parse().map(ForeignItem::Static)
-+ let vis = input.parse()?;
-+ let static_token = input.parse()?;
-+ let mutability = input.parse()?;
-+ let ident = input.parse()?;
-+ let colon_token = input.parse()?;
-+ let ty = input.parse()?;
-+ if input.peek(Token![=]) {
-+ input.parse::<Token![=]>()?;
-+ input.parse::<Expr>()?;
-+ input.parse::<Token![;]>()?;
-+ Ok(ForeignItem::Verbatim(verbatim::between(begin, input)))
-+ } else {
-+ Ok(ForeignItem::Static(ForeignItemStatic {
-+ attrs: Vec::new(),
-+ vis,
-+ static_token,
-+ mutability,
-+ ident,
-+ colon_token,
-+ ty,
-+ semi_token: input.parse()?,
-+ }))
-+ }
- } else if lookahead.peek(Token![type]) {
-- input.parse().map(ForeignItem::Type)
-+ parse_foreign_item_type(begin, input)
- } else if vis.is_inherited()
- && (lookahead.peek(Ident)
- || lookahead.peek(Token![self])
- || lookahead.peek(Token![super])
-- || lookahead.peek(Token![extern])
- || lookahead.peek(Token![crate])
- || lookahead.peek(Token![::]))
- {
- input.parse().map(ForeignItem::Macro)
- } else {
- Err(lookahead.error())
- }?;
-
-- {
-- let item_attrs = match &mut item {
-- ForeignItem::Fn(item) => &mut item.attrs,
-- ForeignItem::Static(item) => &mut item.attrs,
-- ForeignItem::Type(item) => &mut item.attrs,
-- ForeignItem::Macro(item) => &mut item.attrs,
-- ForeignItem::Verbatim(_) | ForeignItem::__Nonexhaustive => unreachable!(),
-- };
-- attrs.extend(item_attrs.drain(..));
-- *item_attrs = attrs;
-- }
-+ let item_attrs = match &mut item {
-+ ForeignItem::Fn(item) => &mut item.attrs,
-+ ForeignItem::Static(item) => &mut item.attrs,
-+ ForeignItem::Type(item) => &mut item.attrs,
-+ ForeignItem::Macro(item) => &mut item.attrs,
-+ ForeignItem::Verbatim(_) => return Ok(item),
-+ ForeignItem::__Nonexhaustive => unreachable!(),
-+ };
-+ attrs.extend(item_attrs.drain(..));
-+ *item_attrs = attrs;
-
- Ok(item)
- }
- }
-
- impl Parse for ForeignItemFn {
- fn parse(input: ParseStream) -> Result<Self> {
- let attrs = input.call(Attribute::parse_outer)?;
- let vis: Visibility = input.parse()?;
-- let fn_token: Token![fn] = input.parse()?;
-- let ident: Ident = input.parse()?;
-- let generics: Generics = input.parse()?;
--
-- let content;
-- let paren_token = parenthesized!(content in input);
-- let mut inputs = Punctuated::new();
-- let mut variadic = None;
-- while !content.is_empty() {
-- let attrs = content.call(Attribute::parse_outer)?;
--
-- if let Some(dots) = content.parse()? {
-- variadic = Some(Variadic { attrs, dots });
-- break;
-- }
--
-- let mut arg = content.call(fn_arg_typed)?;
-- arg.attrs = attrs;
-- inputs.push_value(FnArg::Typed(arg));
-- if content.is_empty() {
-- break;
-- }
--
-- inputs.push_punct(content.parse()?);
-- }
--
-- let output: ReturnType = input.parse()?;
-- let where_clause: Option<WhereClause> = input.parse()?;
-+ let sig = parse_signature(input)?;
- let semi_token: Token![;] = input.parse()?;
--
- Ok(ForeignItemFn {
- attrs,
- vis,
-- sig: Signature {
-- constness: None,
-- asyncness: None,
-- unsafety: None,
-- abi: None,
-- fn_token,
-- ident,
-- paren_token,
-- inputs,
-- output,
-- variadic,
-- generics: Generics {
-- where_clause,
-- ..generics
-- },
-- },
-+ sig,
- semi_token,
- })
- }
- }
-
- impl Parse for ForeignItemStatic {
- fn parse(input: ParseStream) -> Result<Self> {
- Ok(ForeignItemStatic {
-@@ -1701,16 +1691,47 @@ pub mod parsing {
- vis: input.parse()?,
- type_token: input.parse()?,
- ident: input.parse()?,
- semi_token: input.parse()?,
- })
- }
- }
-
-+ fn parse_foreign_item_type(begin: ParseBuffer, input: ParseStream) -> Result<ForeignItem> {
-+ let FlexibleItemType {
-+ vis,
-+ defaultness,
-+ type_token,
-+ ident,
-+ generics,
-+ colon_token,
-+ bounds: _,
-+ ty,
-+ semi_token,
-+ } = input.parse()?;
-+
-+ if defaultness.is_some()
-+ || generics.lt_token.is_some()
-+ || generics.where_clause.is_some()
-+ || colon_token.is_some()
-+ || ty.is_some()
-+ {
-+ Ok(ForeignItem::Verbatim(verbatim::between(begin, input)))
-+ } else {
-+ Ok(ForeignItem::Type(ForeignItemType {
-+ attrs: Vec::new(),
-+ vis,
-+ type_token,
-+ ident,
-+ semi_token,
-+ }))
-+ }
-+ }
-+
- impl Parse for ForeignItemMacro {
- fn parse(input: ParseStream) -> Result<Self> {
- let attrs = input.call(Attribute::parse_outer)?;
- let mac: Macro = input.parse()?;
- let semi_token: Option<Token![;]> = if mac.delimiter.is_brace() {
- None
- } else {
- Some(input.parse()?)
-@@ -1737,16 +1758,46 @@ pub mod parsing {
- },
- eq_token: input.parse()?,
- ty: input.parse()?,
- semi_token: input.parse()?,
- })
- }
- }
-
-+ fn parse_item_type(begin: ParseBuffer, input: ParseStream) -> Result<Item> {
-+ let FlexibleItemType {
-+ vis,
-+ defaultness,
-+ type_token,
-+ ident,
-+ generics,
-+ colon_token,
-+ bounds: _,
-+ ty,
-+ semi_token,
-+ } = input.parse()?;
-+
-+ if defaultness.is_some() || colon_token.is_some() || ty.is_none() {
-+ Ok(Item::Verbatim(verbatim::between(begin, input)))
-+ } else {
-+ let (eq_token, ty) = ty.unwrap();
-+ Ok(Item::Type(ItemType {
-+ attrs: Vec::new(),
-+ vis,
-+ type_token,
-+ ident,
-+ generics,
-+ eq_token,
-+ ty: Box::new(ty),
-+ semi_token,
-+ }))
-+ }
-+ }
-+
- #[cfg(not(feature = "printing"))]
- fn item_existential(input: ParseStream) -> Result<TokenStream> {
- Err(input.error("existential type is not supported"))
- }
-
- #[cfg(feature = "printing")]
- fn item_existential(input: ParseStream) -> Result<TokenStream> {
- use crate::attr::FilterAttrs;
-@@ -1882,39 +1933,39 @@ pub mod parsing {
- .map(Item::TraitAlias)
- } else {
- Err(lookahead.error())
- }
- }
-
- impl Parse for ItemTrait {
- fn parse(input: ParseStream) -> Result<Self> {
-- let attrs = input.call(Attribute::parse_outer)?;
-+ let outer_attrs = input.call(Attribute::parse_outer)?;
- let vis: Visibility = input.parse()?;
- let unsafety: Option<Token![unsafe]> = input.parse()?;
- let auto_token: Option<Token![auto]> = input.parse()?;
- let trait_token: Token![trait] = input.parse()?;
- let ident: Ident = input.parse()?;
- let generics: Generics = input.parse()?;
- parse_rest_of_trait(
- input,
-- attrs,
-+ outer_attrs,
- vis,
- unsafety,
- auto_token,
- trait_token,
- ident,
- generics,
- )
- }
- }
-
- fn parse_rest_of_trait(
- input: ParseStream,
-- attrs: Vec<Attribute>,
-+ outer_attrs: Vec<Attribute>,
- vis: Visibility,
- unsafety: Option<Token![unsafe]>,
- auto_token: Option<Token![auto]>,
- trait_token: Token![trait],
- ident: Ident,
- mut generics: Generics,
- ) -> Result<ItemTrait> {
- let colon_token: Option<Token![:]> = input.parse()?;
-@@ -1932,23 +1983,24 @@ pub mod parsing {
- }
- }
- }
-
- generics.where_clause = input.parse()?;
-
- let content;
- let brace_token = braced!(content in input);
-+ let inner_attrs = content.call(Attribute::parse_inner)?;
- let mut items = Vec::new();
- while !content.is_empty() {
- items.push(content.parse()?);
- }
-
- Ok(ItemTrait {
-- attrs,
-+ attrs: private::attrs(outer_attrs, inner_attrs),
- vis,
- unsafety,
- auto_token,
- trait_token,
- ident,
- generics,
- colon_token,
- supertraits,
-@@ -2009,76 +2061,83 @@ pub mod parsing {
- eq_token,
- bounds,
- semi_token,
- })
- }
-
- impl Parse for TraitItem {
- fn parse(input: ParseStream) -> Result<Self> {
-+ let begin = input.fork();
- let mut attrs = input.call(Attribute::parse_outer)?;
-+ let vis: Visibility = input.parse()?;
-+ let defaultness: Option<Token![default]> = input.parse()?;
- let ahead = input.fork();
-
- let lookahead = ahead.lookahead1();
-- let mut item = if lookahead.peek(Token![const]) {
-+ let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead) {
-+ input.parse().map(TraitItem::Method)
-+ } else if lookahead.peek(Token![const]) {
- ahead.parse::<Token![const]>()?;
- let lookahead = ahead.lookahead1();
-- if lookahead.peek(Ident) {
-+ if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
- input.parse().map(TraitItem::Const)
- } else if lookahead.peek(Token![async])
- || lookahead.peek(Token![unsafe])
- || lookahead.peek(Token![extern])
- || lookahead.peek(Token![fn])
- {
- input.parse().map(TraitItem::Method)
- } else {
- Err(lookahead.error())
- }
-- } else if lookahead.peek(Token![async])
-- || lookahead.peek(Token![unsafe])
-- || lookahead.peek(Token![extern])
-- || lookahead.peek(Token![fn])
-- {
-- input.parse().map(TraitItem::Method)
- } else if lookahead.peek(Token![type]) {
-- input.parse().map(TraitItem::Type)
-+ parse_trait_item_type(begin.fork(), input)
- } else if lookahead.peek(Ident)
- || lookahead.peek(Token![self])
- || lookahead.peek(Token![super])
-- || lookahead.peek(Token![extern])
- || lookahead.peek(Token![crate])
- || lookahead.peek(Token![::])
- {
- input.parse().map(TraitItem::Macro)
- } else {
- Err(lookahead.error())
- }?;
-
-- {
-- let item_attrs = match &mut item {
-- TraitItem::Const(item) => &mut item.attrs,
-- TraitItem::Method(item) => &mut item.attrs,
-- TraitItem::Type(item) => &mut item.attrs,
-- TraitItem::Macro(item) => &mut item.attrs,
-- TraitItem::Verbatim(_) | TraitItem::__Nonexhaustive => unreachable!(),
-- };
-- attrs.extend(item_attrs.drain(..));
-- *item_attrs = attrs;
-+ match (vis, defaultness) {
-+ (Visibility::Inherited, None) => {}
-+ _ => return Ok(TraitItem::Verbatim(verbatim::between(begin, input))),
- }
-
-+ let item_attrs = match &mut item {
-+ TraitItem::Const(item) => &mut item.attrs,
-+ TraitItem::Method(item) => &mut item.attrs,
-+ TraitItem::Type(item) => &mut item.attrs,
-+ TraitItem::Macro(item) => &mut item.attrs,
-+ TraitItem::Verbatim(_) | TraitItem::__Nonexhaustive => unreachable!(),
-+ };
-+ attrs.extend(item_attrs.drain(..));
-+ *item_attrs = attrs;
- Ok(item)
- }
- }
-
- impl Parse for TraitItemConst {
- fn parse(input: ParseStream) -> Result<Self> {
- Ok(TraitItemConst {
- attrs: input.call(Attribute::parse_outer)?,
- const_token: input.parse()?,
-- ident: input.parse()?,
-+ ident: {
-+ let lookahead = input.lookahead1();
-+ if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
-+ input.call(Ident::parse_any)?
-+ } else {
-+ return Err(lookahead.error());
-+ }
-+ },
- colon_token: input.parse()?,
- ty: input.parse()?,
- default: {
- if input.peek(Token![=]) {
- let eq_token: Token![=] = input.parse()?;
- let default: Expr = input.parse()?;
- Some((eq_token, default))
- } else {
-@@ -2088,30 +2147,17 @@ pub mod parsing {
- semi_token: input.parse()?,
- })
- }
- }
-
- impl Parse for TraitItemMethod {
- fn parse(input: ParseStream) -> Result<Self> {
- let outer_attrs = input.call(Attribute::parse_outer)?;
-- let constness: Option<Token![const]> = input.parse()?;
-- let asyncness: Option<Token![async]> = input.parse()?;
-- let unsafety: Option<Token![unsafe]> = input.parse()?;
-- let abi: Option<Abi> = input.parse()?;
-- let fn_token: Token![fn] = input.parse()?;
-- let ident: Ident = input.parse()?;
-- let generics: Generics = input.parse()?;
--
-- let content;
-- let paren_token = parenthesized!(content in input);
-- let inputs = content.parse_terminated(FnArg::parse)?;
--
-- let output: ReturnType = input.parse()?;
-- let where_clause: Option<WhereClause> = input.parse()?;
-+ let sig = parse_signature(input)?;
-
- let lookahead = input.lookahead1();
- let (brace_token, inner_attrs, stmts, semi_token) = if lookahead.peek(token::Brace) {
- let content;
- let brace_token = braced!(content in input);
- let inner_attrs = content.call(Attribute::parse_inner)?;
- let stmts = content.call(Block::parse_within)?;
- (Some(brace_token), inner_attrs, stmts, None)
-@@ -2119,32 +2165,17 @@ pub mod parsing {
- let semi_token: Token![;] = input.parse()?;
- (None, Vec::new(), Vec::new(), Some(semi_token))
- } else {
- return Err(lookahead.error());
- };
-
- Ok(TraitItemMethod {
- attrs: private::attrs(outer_attrs, inner_attrs),
-- sig: Signature {
-- constness,
-- asyncness,
-- unsafety,
-- abi,
-- fn_token,
-- ident,
-- paren_token,
-- inputs,
-- output,
-- variadic: None,
-- generics: Generics {
-- where_clause,
-- ..generics
-- },
-- },
-+ sig,
- default: brace_token.map(|brace_token| Block { brace_token, stmts }),
- semi_token,
- })
- }
- }
-
- impl Parse for TraitItemType {
- fn parse(input: ParseStream) -> Result<Self> {
-@@ -2183,16 +2214,45 @@ pub mod parsing {
- colon_token,
- bounds,
- default,
- semi_token,
- })
- }
- }
-
-+ fn parse_trait_item_type(begin: ParseBuffer, input: ParseStream) -> Result<TraitItem> {
-+ let FlexibleItemType {
-+ vis,
-+ defaultness,
-+ type_token,
-+ ident,
-+ generics,
-+ colon_token,
-+ bounds,
-+ ty,
-+ semi_token,
-+ } = input.parse()?;
-+
-+ if defaultness.is_some() || vis.is_some() {
-+ Ok(TraitItem::Verbatim(verbatim::between(begin, input)))
-+ } else {
-+ Ok(TraitItem::Type(TraitItemType {
-+ attrs: Vec::new(),
-+ type_token,
-+ ident,
-+ generics,
-+ colon_token,
-+ bounds,
-+ default: ty,
-+ semi_token,
-+ }))
-+ }
-+ }
-+
- impl Parse for TraitItemMacro {
- fn parse(input: ParseStream) -> Result<Self> {
- let attrs = input.call(Attribute::parse_outer)?;
- let mac: Macro = input.parse()?;
- let semi_token: Option<Token![;]> = if mac.delimiter.is_brace() {
- None
- } else {
- Some(input.parse()?)
-@@ -2202,123 +2262,148 @@ pub mod parsing {
- mac,
- semi_token,
- })
- }
- }
-
- impl Parse for ItemImpl {
- fn parse(input: ParseStream) -> Result<Self> {
-- let outer_attrs = input.call(Attribute::parse_outer)?;
-- let defaultness: Option<Token![default]> = input.parse()?;
-- let unsafety: Option<Token![unsafe]> = input.parse()?;
-- let impl_token: Token![impl] = input.parse()?;
-+ let allow_const_impl = false;
-+ parse_impl(input, allow_const_impl).map(Option::unwrap)
-+ }
-+ }
-+
-+ fn parse_impl(input: ParseStream, allow_const_impl: bool) -> Result<Option<ItemImpl>> {
-+ let outer_attrs = input.call(Attribute::parse_outer)?;
-+ let defaultness: Option<Token![default]> = input.parse()?;
-+ let unsafety: Option<Token![unsafe]> = input.parse()?;
-+ let impl_token: Token![impl] = input.parse()?;
-
-- let has_generics = input.peek(Token![<])
-- && (input.peek2(Token![>])
-- || input.peek2(Token![#])
-- || (input.peek2(Ident) || input.peek2(Lifetime))
-- && (input.peek3(Token![:])
-- || input.peek3(Token![,])
-- || input.peek3(Token![>])));
-- let generics: Generics = if has_generics {
-- input.parse()?
-- } else {
-- Generics::default()
-- };
-+ let has_generics = input.peek(Token![<])
-+ && (input.peek2(Token![>])
-+ || input.peek2(Token![#])
-+ || (input.peek2(Ident) || input.peek2(Lifetime))
-+ && (input.peek3(Token![:])
-+ || input.peek3(Token![,])
-+ || input.peek3(Token![>]))
-+ || input.peek2(Token![const]));
-+ let generics: Generics = if has_generics {
-+ input.parse()?
-+ } else {
-+ Generics::default()
-+ };
-
-- let trait_ = {
-- // TODO: optimize using advance_to
-- let ahead = input.fork();
-- if ahead.parse::<Option<Token![!]>>().is_ok()
-- && ahead.parse::<Path>().is_ok()
-- && ahead.parse::<Token![for]>().is_ok()
-- {
-- let polarity: Option<Token![!]> = input.parse()?;
-- let path: Path = input.parse()?;
-- let for_token: Token![for] = input.parse()?;
-- Some((polarity, path, for_token))
-- } else {
-- None
-- }
-- };
-- let self_ty: Type = input.parse()?;
-- let where_clause: Option<WhereClause> = input.parse()?;
-+ let is_const_impl = allow_const_impl
-+ && (input.peek(Token![const]) || input.peek(Token![?]) && input.peek2(Token![const]));
-+ if is_const_impl {
-+ input.parse::<Option<Token![?]>>()?;
-+ input.parse::<Token![const]>()?;
-+ }
-
-- let content;
-- let brace_token = braced!(content in input);
-- let inner_attrs = content.call(Attribute::parse_inner)?;
-+ let trait_ = (|| -> Option<_> {
-+ let ahead = input.fork();
-+ let polarity: Option<Token![!]> = ahead.parse().ok()?;
-+ let mut path: Path = ahead.parse().ok()?;
-+ if path.segments.last().unwrap().arguments.is_empty() && ahead.peek(token::Paren) {
-+ let parenthesized = PathArguments::Parenthesized(ahead.parse().ok()?);
-+ path.segments.last_mut().unwrap().arguments = parenthesized;
-+ }
-+ let for_token: Token![for] = ahead.parse().ok()?;
-+ input.advance_to(&ahead);
-+ Some((polarity, path, for_token))
-+ })();
-
-- let mut items = Vec::new();
-- while !content.is_empty() {
-- items.push(content.parse()?);
-- }
-+ let self_ty: Type = input.parse()?;
-+ let where_clause: Option<WhereClause> = input.parse()?;
-+
-+ let content;
-+ let brace_token = braced!(content in input);
-+ let inner_attrs = content.call(Attribute::parse_inner)?;
-
-- Ok(ItemImpl {
-+ let mut items = Vec::new();
-+ while !content.is_empty() {
-+ items.push(content.parse()?);
-+ }
-+
-+ if is_const_impl {
-+ Ok(None)
-+ } else {
-+ Ok(Some(ItemImpl {
- attrs: private::attrs(outer_attrs, inner_attrs),
- defaultness,
- unsafety,
- impl_token,
- generics: Generics {
- where_clause,
- ..generics
- },
- trait_,
- self_ty: Box::new(self_ty),
- brace_token,
- items,
-- })
-+ }))
- }
- }
-
- impl Parse for ImplItem {
- fn parse(input: ParseStream) -> Result<Self> {
-+ let begin = input.fork();
- let mut attrs = input.call(Attribute::parse_outer)?;
- let ahead = input.fork();
- let vis: Visibility = ahead.parse()?;
-
- let mut lookahead = ahead.lookahead1();
- let defaultness = if lookahead.peek(Token![default]) && !ahead.peek2(Token![!]) {
- let defaultness: Token![default] = ahead.parse()?;
- lookahead = ahead.lookahead1();
- Some(defaultness)
- } else {
- None
- };
-
-- let mut item = if lookahead.peek(Token![const]) {
-- ahead.parse::<Token![const]>()?;
-+ let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead) {
-+ input.parse().map(ImplItem::Method)
-+ } else if lookahead.peek(Token![const]) {
-+ let const_token: Token![const] = ahead.parse()?;
- let lookahead = ahead.lookahead1();
-- if lookahead.peek(Ident) {
-- input.parse().map(ImplItem::Const)
-- } else if lookahead.peek(Token![unsafe])
-- || lookahead.peek(Token![async])
-- || lookahead.peek(Token![extern])
-- || lookahead.peek(Token![fn])
-- {
-- input.parse().map(ImplItem::Method)
-+ if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
-+ input.advance_to(&ahead);
-+ let ident: Ident = input.call(Ident::parse_any)?;
-+ let colon_token: Token![:] = input.parse()?;
-+ let ty: Type = input.parse()?;
-+ if let Some(eq_token) = input.parse()? {
-+ return Ok(ImplItem::Const(ImplItemConst {
-+ attrs,
-+ vis,
-+ defaultness,
-+ const_token,
-+ ident,
-+ colon_token,
-+ ty,
-+ eq_token,
-+ expr: input.parse()?,
-+ semi_token: input.parse()?,
-+ }));
-+ } else {
-+ input.parse::<Token![;]>()?;
-+ return Ok(ImplItem::Verbatim(verbatim::between(begin, input)));
-+ }
- } else {
- Err(lookahead.error())
- }
-- } else if lookahead.peek(Token![unsafe])
-- || lookahead.peek(Token![async])
-- || lookahead.peek(Token![extern])
-- || lookahead.peek(Token![fn])
-- {
-- input.parse().map(ImplItem::Method)
- } else if lookahead.peek(Token![type]) {
-- input.parse().map(ImplItem::Type)
-+ parse_impl_item_type(begin, input)
- } else if vis.is_inherited() && defaultness.is_none() && lookahead.peek(existential) {
- input.call(item_existential).map(ImplItem::Verbatim)
- } else if vis.is_inherited()
- && defaultness.is_none()
- && (lookahead.peek(Ident)
- || lookahead.peek(Token![self])
- || lookahead.peek(Token![super])
-- || lookahead.peek(Token![extern])
- || lookahead.peek(Token![crate])
- || lookahead.peek(Token![::]))
- {
- input.parse().map(ImplItem::Macro)
- } else {
- Err(lookahead.error())
- }?;
-
-@@ -2341,72 +2426,68 @@ pub mod parsing {
-
- impl Parse for ImplItemConst {
- fn parse(input: ParseStream) -> Result<Self> {
- Ok(ImplItemConst {
- attrs: input.call(Attribute::parse_outer)?,
- vis: input.parse()?,
- defaultness: input.parse()?,
- const_token: input.parse()?,
-- ident: input.parse()?,
-+ ident: {
-+ let lookahead = input.lookahead1();
-+ if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
-+ input.call(Ident::parse_any)?
-+ } else {
-+ return Err(lookahead.error());
-+ }
-+ },
- colon_token: input.parse()?,
- ty: input.parse()?,
- eq_token: input.parse()?,
- expr: input.parse()?,
- semi_token: input.parse()?,
- })
- }
- }
-
- impl Parse for ImplItemMethod {
- fn parse(input: ParseStream) -> Result<Self> {
-- let outer_attrs = input.call(Attribute::parse_outer)?;
-+ let mut attrs = input.call(Attribute::parse_outer)?;
- let vis: Visibility = input.parse()?;
- let defaultness: Option<Token![default]> = input.parse()?;
-- let constness: Option<Token![const]> = input.parse()?;
-- let asyncness: Option<Token![async]> = input.parse()?;
-- let unsafety: Option<Token![unsafe]> = input.parse()?;
-- let abi: Option<Abi> = input.parse()?;
-- let fn_token: Token![fn] = input.parse()?;
-- let ident: Ident = input.parse()?;
-- let generics: Generics = input.parse()?;
-+ let sig = parse_signature(input)?;
-
-- let content;
-- let paren_token = parenthesized!(content in input);
-- let inputs = content.parse_terminated(FnArg::parse)?;
--
-- let output: ReturnType = input.parse()?;
-- let where_clause: Option<WhereClause> = input.parse()?;
--
-- let content;
-- let brace_token = braced!(content in input);
-- let inner_attrs = content.call(Attribute::parse_inner)?;
-- let stmts = content.call(Block::parse_within)?;
-+ let block = if let Some(semi) = input.parse::<Option<Token![;]>>()? {
-+ // Accept methods without a body in an impl block because
-+ // rustc's *parser* does not reject them (the compilation error
-+ // is emitted later than parsing) and it can be useful for macro
-+ // DSLs.
-+ let mut punct = Punct::new(';', Spacing::Alone);
-+ punct.set_span(semi.span);
-+ let tokens = TokenStream::from_iter(vec![TokenTree::Punct(punct)]);
-+ Block {
-+ brace_token: Brace::default(),
-+ stmts: vec![Stmt::Item(Item::Verbatim(tokens))],
-+ }
-+ } else {
-+ let content;
-+ let brace_token = braced!(content in input);
-+ attrs.extend(content.call(Attribute::parse_inner)?);
-+ Block {
-+ brace_token,
-+ stmts: content.call(Block::parse_within)?,
-+ }
-+ };
-
- Ok(ImplItemMethod {
-- attrs: private::attrs(outer_attrs, inner_attrs),
-+ attrs,
- vis,
- defaultness,
-- sig: Signature {
-- constness,
-- asyncness,
-- unsafety,
-- abi,
-- fn_token,
-- ident,
-- paren_token,
-- inputs,
-- output,
-- variadic: None,
-- generics: Generics {
-- where_clause,
-- ..generics
-- },
-- },
-- block: Block { brace_token, stmts },
-+ sig,
-+ block,
- })
- }
- }
-
- impl Parse for ImplItemType {
- fn parse(input: ParseStream) -> Result<Self> {
- Ok(ImplItemType {
- attrs: input.call(Attribute::parse_outer)?,
-@@ -2421,16 +2502,47 @@ pub mod parsing {
- },
- eq_token: input.parse()?,
- ty: input.parse()?,
- semi_token: input.parse()?,
- })
- }
- }
-
-+ fn parse_impl_item_type(begin: ParseBuffer, input: ParseStream) -> Result<ImplItem> {
-+ let FlexibleItemType {
-+ vis,
-+ defaultness,
-+ type_token,
-+ ident,
-+ generics,
-+ colon_token,
-+ bounds: _,
-+ ty,
-+ semi_token,
-+ } = input.parse()?;
-+
-+ if colon_token.is_some() || ty.is_none() {
-+ Ok(ImplItem::Verbatim(verbatim::between(begin, input)))
-+ } else {
-+ let (eq_token, ty) = ty.unwrap();
-+ Ok(ImplItem::Type(ImplItemType {
-+ attrs: Vec::new(),
-+ vis,
-+ defaultness,
-+ type_token,
-+ ident,
-+ generics,
-+ eq_token,
-+ ty,
-+ semi_token,
-+ }))
-+ }
-+ }
-+
- impl Parse for ImplItemMacro {
- fn parse(input: ParseStream) -> Result<Self> {
- let attrs = input.call(Attribute::parse_outer)?;
- let mac: Macro = input.parse()?;
- let semi_token: Option<Token![;]> = if mac.delimiter.is_brace() {
- None
- } else {
- Some(input.parse()?)
-@@ -2466,16 +2578,17 @@ pub mod parsing {
- mod printing {
- use super::*;
-
- use proc_macro2::TokenStream;
- use quote::{ToTokens, TokenStreamExt};
-
- use crate::attr::FilterAttrs;
- use crate::print::TokensOrDefault;
-+ use crate::punctuated::Pair;
-
- impl ToTokens for ItemExternCrate {
- fn to_tokens(&self, tokens: &mut TokenStream) {
- tokens.append_all(self.attrs.outer());
- self.vis.to_tokens(tokens);
- self.extern_token.to_tokens(tokens);
- self.crate_token.to_tokens(tokens);
- self.ident.to_tokens(tokens);
-@@ -2830,16 +2943,24 @@ mod printing {
- }
-
- impl ToTokens for ImplItemMethod {
- fn to_tokens(&self, tokens: &mut TokenStream) {
- tokens.append_all(self.attrs.outer());
- self.vis.to_tokens(tokens);
- self.defaultness.to_tokens(tokens);
- self.sig.to_tokens(tokens);
-+ if self.block.stmts.len() == 1 {
-+ if let Stmt::Item(Item::Verbatim(verbatim)) = &self.block.stmts[0] {
-+ if verbatim.to_string() == ";" {
-+ verbatim.to_tokens(tokens);
-+ return;
-+ }
-+ }
-+ }
- self.block.brace_token.surround(tokens, |tokens| {
- tokens.append_all(self.attrs.inner());
- tokens.append_all(&self.block.stmts);
- });
- }
- }
-
- impl ToTokens for ImplItemType {
-@@ -2900,31 +3021,71 @@ mod printing {
- impl ToTokens for ForeignItemMacro {
- fn to_tokens(&self, tokens: &mut TokenStream) {
- tokens.append_all(self.attrs.outer());
- self.mac.to_tokens(tokens);
- self.semi_token.to_tokens(tokens);
- }
- }
-
-+ fn maybe_variadic_to_tokens(arg: &FnArg, tokens: &mut TokenStream) -> bool {
-+ let arg = match arg {
-+ FnArg::Typed(arg) => arg,
-+ FnArg::Receiver(receiver) => {
-+ receiver.to_tokens(tokens);
-+ return false;
-+ }
-+ };
-+
-+ match arg.ty.as_ref() {
-+ Type::Verbatim(ty) if ty.to_string() == "..." => {
-+ match arg.pat.as_ref() {
-+ Pat::Verbatim(pat) if pat.to_string() == "..." => {
-+ tokens.append_all(arg.attrs.outer());
-+ pat.to_tokens(tokens);
-+ }
-+ _ => arg.to_tokens(tokens),
-+ }
-+ true
-+ }
-+ _ => {
-+ arg.to_tokens(tokens);
-+ false
-+ }
-+ }
-+ }
-+
- impl ToTokens for Signature {
- fn to_tokens(&self, tokens: &mut TokenStream) {
- self.constness.to_tokens(tokens);
- self.asyncness.to_tokens(tokens);
- self.unsafety.to_tokens(tokens);
- self.abi.to_tokens(tokens);
- self.fn_token.to_tokens(tokens);
- self.ident.to_tokens(tokens);
- self.generics.to_tokens(tokens);
- self.paren_token.surround(tokens, |tokens| {
-- self.inputs.to_tokens(tokens);
-- if self.variadic.is_some() && !self.inputs.empty_or_trailing() {
-- <Token![,]>::default().to_tokens(tokens);
-+ let mut last_is_variadic = false;
-+ for input in self.inputs.pairs() {
-+ match input {
-+ Pair::Punctuated(input, comma) => {
-+ maybe_variadic_to_tokens(input, tokens);
-+ comma.to_tokens(tokens);
-+ }
-+ Pair::End(input) => {
-+ last_is_variadic = maybe_variadic_to_tokens(input, tokens);
-+ }
-+ }
- }
-- self.variadic.to_tokens(tokens);
-+ if self.variadic.is_some() && !last_is_variadic {
-+ if !self.inputs.empty_or_trailing() {
-+ <Token![,]>::default().to_tokens(tokens);
-+ }
-+ self.variadic.to_tokens(tokens);
-+ }
- });
- self.output.to_tokens(tokens);
- self.generics.where_clause.to_tokens(tokens);
- }
- }
-
- impl ToTokens for Receiver {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-diff --git a/third_party/rust/syn/src/lib.rs b/third_party/rust/syn/src/lib.rs
---- a/third_party/rust/syn/src/lib.rs
-+++ b/third_party/rust/syn/src/lib.rs
-@@ -1,8 +1,16 @@
-+//! [![github]](https://github.com/dtolnay/syn) [![crates-io]](https://crates.io/crates/syn) [![docs-rs]](https://docs.rs/syn)
-+//!
-+//! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github
-+//! [crates-io]: https://img.shields.io/badge/crates.io-fc8d62?style=for-the-badge&labelColor=555555&logo=rust
-+//! [docs-rs]: https://img.shields.io/badge/docs.rs-66c2a5?style=for-the-badge&labelColor=555555&logoColor=white&logo=data:image/svg+xml;base64,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
-+//!
-+//! <br>
-+//!
- //! Syn is a parsing library for parsing a stream of Rust tokens into a syntax
- //! tree of Rust source code.
- //!
- //! Currently this library is geared toward use in Rust procedural macros, but
- //! contains some APIs that may be useful more generally.
- //!
- //! - **Data structures** — Syn provides a complete syntax tree that can
- //! represent any valid Rust source code. The syntax tree is rooted at
-@@ -57,18 +65,18 @@
- //! syn = "1.0"
- //! quote = "1.0"
- //!
- //! [lib]
- //! proc-macro = true
- //! ```
- //!
- //! ```
--//! extern crate proc_macro;
--//!
-+//! # extern crate proc_macro;
-+//! #
- //! use proc_macro::TokenStream;
- //! use quote::quote;
- //! use syn::{parse_macro_input, DeriveInput};
- //!
- //! # const IGNORE_TOKENS: &str = stringify! {
- //! #[proc_macro_derive(MyMacro)]
- //! # };
- //! pub fn my_macro(input: TokenStream) -> TokenStream {
-@@ -237,59 +245,71 @@
- //! - **`clone-impls`** *(enabled by default)* — Clone impls for all syntax tree
- //! types.
- //! - **`extra-traits`** — Debug, Eq, PartialEq, Hash impls for all syntax tree
- //! types.
- //! - **`proc-macro`** *(enabled by default)* — Runtime dependency on the
- //! dynamic library libproc_macro from rustc toolchain.
-
- // Syn types in rustdoc of other crates get linked to here.
--#![doc(html_root_url = "https://docs.rs/syn/1.0.5")]
-+#![doc(html_root_url = "https://docs.rs/syn/1.0.40")]
- #![deny(clippy::all, clippy::pedantic)]
- // Ignored clippy lints.
- #![allow(
-- clippy::block_in_if_condition_stmt,
-+ clippy::blocks_in_if_conditions,
- clippy::cognitive_complexity,
- clippy::doc_markdown,
- clippy::eval_order_dependence,
- clippy::inherent_to_string,
- clippy::large_enum_variant,
-+ clippy::manual_non_exhaustive,
-+ clippy::match_like_matches_macro,
-+ clippy::match_on_vec_items,
-+ clippy::needless_doctest_main,
- clippy::needless_pass_by_value,
- clippy::never_loop,
- clippy::suspicious_op_assign_impl,
- clippy::too_many_arguments,
-- clippy::trivially_copy_pass_by_ref
-+ clippy::trivially_copy_pass_by_ref,
-+ clippy::unnecessary_unwrap
- )]
- // Ignored clippy_pedantic lints.
- #![allow(
- clippy::cast_possible_truncation,
-+ clippy::default_trait_access,
- clippy::empty_enum,
-+ clippy::expl_impl_clone_on_copy,
- clippy::if_not_else,
- clippy::items_after_statements,
-+ clippy::match_same_arms,
-+ clippy::missing_errors_doc,
- clippy::module_name_repetitions,
-+ clippy::must_use_candidate,
-+ clippy::option_if_let_else,
- clippy::shadow_unrelated,
- clippy::similar_names,
- clippy::single_match_else,
-+ clippy::too_many_lines,
- clippy::unseparated_literal_suffix,
- clippy::use_self,
-- clippy::used_underscore_binding
-+ clippy::used_underscore_binding,
-+ clippy::wildcard_imports
- )]
-
- #[cfg(all(
- not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "wasi"))),
- feature = "proc-macro"
- ))]
- extern crate proc_macro;
- extern crate proc_macro2;
- extern crate unicode_xid;
-
- #[cfg(feature = "printing")]
- extern crate quote;
-
--#[cfg(any(feature = "full", feature = "derive"))]
- #[macro_use]
- mod macros;
-
- // Not public API.
- #[cfg(feature = "parsing")]
- #[doc(hidden)]
- #[macro_use]
- pub mod group;
-@@ -302,17 +322,16 @@ pub use crate::ident::Ident;
-
- #[cfg(any(feature = "full", feature = "derive"))]
- mod attr;
- #[cfg(any(feature = "full", feature = "derive"))]
- pub use crate::attr::{
- AttrStyle, Attribute, AttributeArgs, Meta, MetaList, MetaNameValue, NestedMeta,
- };
-
--#[cfg(any(feature = "full", feature = "derive"))]
- mod bigint;
-
- #[cfg(any(feature = "full", feature = "derive"))]
- mod data;
- #[cfg(any(feature = "full", feature = "derive"))]
- pub use crate::data::{
- Field, Fields, FieldsNamed, FieldsUnnamed, Variant, VisCrate, VisPublic, VisRestricted,
- Visibility,
-@@ -359,19 +378,17 @@ pub use crate::item::{
- #[cfg(feature = "full")]
- mod file;
- #[cfg(feature = "full")]
- pub use crate::file::File;
-
- mod lifetime;
- pub use crate::lifetime::Lifetime;
-
--#[cfg(any(feature = "full", feature = "derive"))]
- mod lit;
--#[cfg(any(feature = "full", feature = "derive"))]
- pub use crate::lit::{
- Lit, LitBool, LitByte, LitByteStr, LitChar, LitFloat, LitInt, LitStr, StrStyle,
- };
-
- #[cfg(any(feature = "full", feature = "derive"))]
- mod mac;
- #[cfg(any(feature = "full", feature = "derive"))]
- pub use crate::mac::{Macro, MacroDelimiter};
-@@ -436,16 +453,19 @@ pub mod parse_quote;
- feature = "proc-macro"
- ))]
- #[doc(hidden)]
- pub mod parse_macro_input;
-
- #[cfg(all(feature = "parsing", feature = "printing"))]
- pub mod spanned;
-
-+#[cfg(all(feature = "parsing", feature = "full"))]
-+mod whitespace;
-+
- mod gen {
- /// Syntax tree traversal to walk a shared borrow of a syntax tree.
- ///
- /// Each method of the [`Visit`] trait is a hook that can be overridden to
- /// customize the behavior when visiting the corresponding type of node. By
- /// default, every method recursively visits the substructure of the input
- /// by invoking the right visitor method of each of its fields.
- ///
-@@ -477,17 +497,17 @@ mod gen {
- /// v.visit_expr(&*node.left);
- /// v.visit_bin_op(&node.op);
- /// v.visit_expr(&*node.right);
- /// }
- ///
- /// /* ... */
- /// ```
- ///
-- /// *This module is available if Syn is built with the `"visit"` feature.*
-+ /// *This module is available only if Syn is built with the `"visit"` feature.*
- ///
- /// <br>
- ///
- /// # Example
- ///
- /// This visitor will print the name of every freestanding function in the
- /// syntax tree, including nested functions.
- ///
-@@ -598,17 +618,17 @@ mod gen {
- /// v.visit_expr_mut(&mut *node.left);
- /// v.visit_bin_op_mut(&mut node.op);
- /// v.visit_expr_mut(&mut *node.right);
- /// }
- ///
- /// /* ... */
- /// ```
- ///
-- /// *This module is available if Syn is built with the `"visit-mut"`
-+ /// *This module is available only if Syn is built with the `"visit-mut"`
- /// feature.*
- ///
- /// <br>
- ///
- /// # Example
- ///
- /// This mut visitor replace occurrences of u256 suffixed integer literals
- /// like `999u256` with a macro invocation `bigint::u256!(999)`.
-@@ -697,17 +717,17 @@ mod gen {
- /// op: v.fold_bin_op(node.op),
- /// right: Box::new(v.fold_expr(*node.right)),
- /// }
- /// }
- ///
- /// /* ... */
- /// ```
- ///
-- /// *This module is available if Syn is built with the `"fold"` feature.*
-+ /// *This module is available only if Syn is built with the `"fold"` feature.*
- ///
- /// <br>
- ///
- /// # Example
- ///
- /// This fold inserts parentheses to fully parenthesizes any expression.
- ///
- /// ```
-@@ -739,43 +759,63 @@ mod gen {
- ///
- /// // Output: (((a)()) + (((b)((1))) * ((c).d)))
- /// }
- /// ```
- #[cfg(feature = "fold")]
- #[rustfmt::skip]
- pub mod fold;
-
-+ #[cfg(feature = "clone-impls")]
-+ #[rustfmt::skip]
-+ mod clone;
-+
-+ #[cfg(feature = "extra-traits")]
-+ #[rustfmt::skip]
-+ mod eq;
-+
-+ #[cfg(feature = "extra-traits")]
-+ #[rustfmt::skip]
-+ mod hash;
-+
-+ #[cfg(feature = "extra-traits")]
-+ #[rustfmt::skip]
-+ mod debug;
-+
- #[cfg(any(feature = "full", feature = "derive"))]
- #[path = "../gen_helper.rs"]
- mod helper;
- }
- pub use crate::gen::*;
-
- // Not public API.
- #[doc(hidden)]
- pub mod export;
-
- mod custom_keyword;
- mod custom_punctuation;
- mod sealed;
-+mod span;
-+mod thread;
-
- #[cfg(feature = "parsing")]
- mod lookahead;
-
- #[cfg(feature = "parsing")]
- pub mod parse;
-
--mod span;
-+#[cfg(feature = "full")]
-+mod reserved;
-+
-+#[cfg(all(any(feature = "full", feature = "derive"), feature = "parsing"))]
-+mod verbatim;
-
- #[cfg(all(any(feature = "full", feature = "derive"), feature = "printing"))]
- mod print;
-
--mod thread;
--
- ////////////////////////////////////////////////////////////////////////////////
-
- #[allow(dead_code, non_camel_case_types)]
- struct private;
-
- // https://github.com/rust-lang/rust/issues/62830
- #[cfg(feature = "parsing")]
- mod rustdoc_workaround {
-@@ -795,24 +835,24 @@ pub use crate::error::{Error, Result};
- /// messages.
- ///
- /// This function parses a `proc_macro::TokenStream` which is the type used for
- /// interop with the compiler in a procedural macro. To parse a
- /// `proc_macro2::TokenStream`, use [`syn::parse2`] instead.
- ///
- /// [`syn::parse2`]: parse2
- ///
--/// *This function is available if Syn is built with both the `"parsing"` and
-+/// *This function is available only if Syn is built with both the `"parsing"` and
- /// `"proc-macro"` features.*
- ///
- /// # Examples
- ///
- /// ```
--/// extern crate proc_macro;
--///
-+/// # extern crate proc_macro;
-+/// #
- /// use proc_macro::TokenStream;
- /// use quote::quote;
- /// use syn::DeriveInput;
- ///
- /// # const IGNORE_TOKENS: &str = stringify! {
- /// #[proc_macro_derive(MyMacro)]
- /// # };
- /// pub fn my_macro(input: TokenStream) -> TokenStream {
-@@ -842,25 +882,25 @@ pub fn parse<T: parse::Parse>(tokens: pr
- /// This function parses a `proc_macro2::TokenStream` which is commonly useful
- /// when the input comes from a node of the Syn syntax tree, for example the
- /// body tokens of a [`Macro`] node. When in a procedural macro parsing the
- /// `proc_macro::TokenStream` provided by the compiler, use [`syn::parse`]
- /// instead.
- ///
- /// [`syn::parse`]: parse()
- ///
--/// *This function is available if Syn is built with the `"parsing"` feature.*
-+/// *This function is available only if Syn is built with the `"parsing"` feature.*
- #[cfg(feature = "parsing")]
- pub fn parse2<T: parse::Parse>(tokens: proc_macro2::TokenStream) -> Result<T> {
- parse::Parser::parse2(T::parse, tokens)
- }
-
- /// Parse a string of Rust code into the chosen syntax tree node.
- ///
--/// *This function is available if Syn is built with the `"parsing"` feature.*
-+/// *This function is available only if Syn is built with the `"parsing"` feature.*
- ///
- /// # Hygiene
- ///
- /// Every span in the resulting syntax tree will be set to resolve at the macro
- /// call site.
- ///
- /// # Examples
- ///
-@@ -869,19 +909,17 @@ pub fn parse2<T: parse::Parse>(tokens: p
- ///
- /// fn run() -> Result<()> {
- /// let code = "assert_eq!(u8::max_value(), 255)";
- /// let expr = syn::parse_str::<Expr>(code)?;
- /// println!("{:#?}", expr);
- /// Ok(())
- /// }
- /// #
--/// # fn main() {
--/// # run().unwrap();
--/// # }
-+/// # run().unwrap();
- /// ```
- #[cfg(feature = "parsing")]
- pub fn parse_str<T: parse::Parse>(s: &str) -> Result<T> {
- parse::Parser::parse_str(T::parse, s)
- }
-
- // FIXME the name parse_file makes it sound like you might pass in a path to a
- // file, rather than the content.
-@@ -889,17 +927,17 @@ pub fn parse_str<T: parse::Parse>(s: &st
- ///
- /// This is different from `syn::parse_str::<File>(content)` in two ways:
- ///
- /// - It discards a leading byte order mark `\u{FEFF}` if the file has one.
- /// - It preserves the shebang line of the file, such as `#!/usr/bin/env rustx`.
- ///
- /// If present, either of these would be an error using `from_str`.
- ///
--/// *This function is available if Syn is built with the `"parsing"` and
-+/// *This function is available only if Syn is built with the `"parsing"` and
- /// `"full"` features.*
- ///
- /// # Examples
- ///
- /// ```no_run
- /// use std::error::Error;
- /// use std::fs::File;
- /// use std::io::Read;
-@@ -913,35 +951,36 @@ pub fn parse_str<T: parse::Parse>(s: &st
- /// if let Some(shebang) = ast.shebang {
- /// println!("{}", shebang);
- /// }
- /// println!("{} items", ast.items.len());
- ///
- /// Ok(())
- /// }
- /// #
--/// # fn main() {
--/// # run().unwrap();
--/// # }
-+/// # run().unwrap();
- /// ```
- #[cfg(all(feature = "parsing", feature = "full"))]
- pub fn parse_file(mut content: &str) -> Result<File> {
- // Strip the BOM if it is present
- const BOM: &str = "\u{feff}";
- if content.starts_with(BOM) {
- content = &content[BOM.len()..];
- }
-
- let mut shebang = None;
-- if content.starts_with("#!") && !content.starts_with("#![") {
-- if let Some(idx) = content.find('\n') {
-- shebang = Some(content[..idx].to_string());
-- content = &content[idx..];
-- } else {
-- shebang = Some(content.to_string());
-- content = "";
-+ if content.starts_with("#!") {
-+ let rest = whitespace::skip(&content[2..]);
-+ if !rest.starts_with('[') {
-+ if let Some(idx) = content.find('\n') {
-+ shebang = Some(content[..idx].to_string());
-+ content = &content[idx..];
-+ } else {
-+ shebang = Some(content.to_string());
-+ content = "";
-+ }
- }
- }
-
- let mut file: File = parse_str(content)?;
- file.shebang = shebang;
- Ok(file)
- }
-diff --git a/third_party/rust/syn/src/lifetime.rs b/third_party/rust/syn/src/lifetime.rs
---- a/third_party/rust/syn/src/lifetime.rs
-+++ b/third_party/rust/syn/src/lifetime.rs
-@@ -13,20 +13,18 @@ use crate::lookahead;
- ///
- /// - Must start with an apostrophe.
- /// - Must not consist of just an apostrophe: `'`.
- /// - Character after the apostrophe must be `_` or a Unicode code point with
- /// the XID_Start property.
- /// - All following characters must be Unicode code points with the XID_Continue
- /// property.
- ///
--/// *This type is available if Syn is built with the `"derive"` or `"full"`
-+/// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
--#[cfg_attr(feature = "extra-traits", derive(Debug))]
--#[derive(Clone)]
- pub struct Lifetime {
- pub apostrophe: Span,
- pub ident: Ident,
- }
-
- impl Lifetime {
- /// # Panics
- ///
-@@ -67,16 +65,25 @@ impl Lifetime {
-
- impl Display for Lifetime {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- "'".fmt(formatter)?;
- self.ident.fmt(formatter)
- }
- }
-
-+impl Clone for Lifetime {
-+ fn clone(&self) -> Self {
-+ Lifetime {
-+ apostrophe: self.apostrophe,
-+ ident: self.ident.clone(),
-+ }
-+ }
-+}
-+
- impl PartialEq for Lifetime {
- fn eq(&self, other: &Lifetime) -> bool {
- self.ident.eq(&other.ident)
- }
- }
-
- impl Eq for Lifetime {}
-
-diff --git a/third_party/rust/syn/src/lit.rs b/third_party/rust/syn/src/lit.rs
---- a/third_party/rust/syn/src/lit.rs
-+++ b/third_party/rust/syn/src/lit.rs
-@@ -17,28 +17,25 @@ use std::hash::{Hash, Hasher};
- use crate::lookahead;
- #[cfg(feature = "parsing")]
- use crate::parse::{Parse, Parser};
- use crate::{Error, Result};
-
- ast_enum_of_structs! {
- /// A Rust literal such as a string or integer or boolean.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-- /// feature.*
-- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
- //
- // TODO: change syntax-tree-enum link to an intra rustdoc link, currently
- // blocked on https://github.com/rust-lang/rust/issues/62833
-- pub enum Lit #manual_extra_traits {
-+ pub enum Lit {
- /// A UTF-8 string literal: `"foo"`.
- Str(LitStr),
-
- /// A byte string literal: `b"foo"`.
- ByteStr(LitByteStr),
-
- /// A byte literal: `b'f'`.
- Byte(LitByte),
-@@ -59,184 +56,98 @@ ast_enum_of_structs! {
-
- /// A raw token literal not interpreted by Syn.
- Verbatim(Literal),
- }
- }
-
- ast_struct! {
- /// A UTF-8 string literal: `"foo"`.
-- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-- /// `"full"` feature.*
-- pub struct LitStr #manual_extra_traits_debug {
-- repr: Box<LitStrRepr>,
-+ pub struct LitStr {
-+ repr: Box<LitRepr>,
- }
- }
-
--#[cfg_attr(feature = "clone-impls", derive(Clone))]
--struct LitStrRepr {
-- token: Literal,
-- suffix: Box<str>,
--}
--
- ast_struct! {
- /// A byte string literal: `b"foo"`.
-- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-- /// `"full"` feature.*
-- pub struct LitByteStr #manual_extra_traits_debug {
-- token: Literal,
-+ pub struct LitByteStr {
-+ repr: Box<LitRepr>,
- }
- }
-
- ast_struct! {
- /// A byte literal: `b'f'`.
-- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-- /// `"full"` feature.*
-- pub struct LitByte #manual_extra_traits_debug {
-- token: Literal,
-+ pub struct LitByte {
-+ repr: Box<LitRepr>,
- }
- }
-
- ast_struct! {
- /// A character literal: `'a'`.
-- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-- /// `"full"` feature.*
-- pub struct LitChar #manual_extra_traits_debug {
-- token: Literal,
-+ pub struct LitChar {
-+ repr: Box<LitRepr>,
- }
- }
-
-+struct LitRepr {
-+ token: Literal,
-+ suffix: Box<str>,
-+}
-+
- ast_struct! {
- /// An integer literal: `1` or `1u16`.
-- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-- /// `"full"` feature.*
-- pub struct LitInt #manual_extra_traits_debug {
-+ pub struct LitInt {
- repr: Box<LitIntRepr>,
- }
- }
-
--#[cfg_attr(feature = "clone-impls", derive(Clone))]
- struct LitIntRepr {
- token: Literal,
- digits: Box<str>,
- suffix: Box<str>,
- }
-
- ast_struct! {
- /// A floating point literal: `1f64` or `1.0e10f64`.
- ///
- /// Must be finite. May not be infinte or NaN.
-- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-- /// `"full"` feature.*
-- pub struct LitFloat #manual_extra_traits_debug {
-+ pub struct LitFloat {
- repr: Box<LitFloatRepr>,
- }
- }
-
--#[cfg_attr(feature = "clone-impls", derive(Clone))]
- struct LitFloatRepr {
- token: Literal,
- digits: Box<str>,
- suffix: Box<str>,
- }
-
- ast_struct! {
- /// A boolean literal: `true` or `false`.
-- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-- /// `"full"` feature.*
-- pub struct LitBool #manual_extra_traits_debug {
-+ pub struct LitBool {
- pub value: bool,
- pub span: Span,
- }
- }
-
--#[cfg(feature = "extra-traits")]
--impl Eq for Lit {}
--
--#[cfg(feature = "extra-traits")]
--impl PartialEq for Lit {
-- fn eq(&self, other: &Self) -> bool {
-- match (self, other) {
-- (Lit::Str(this), Lit::Str(other)) => this == other,
-- (Lit::ByteStr(this), Lit::ByteStr(other)) => this == other,
-- (Lit::Byte(this), Lit::Byte(other)) => this == other,
-- (Lit::Char(this), Lit::Char(other)) => this == other,
-- (Lit::Int(this), Lit::Int(other)) => this == other,
-- (Lit::Float(this), Lit::Float(other)) => this == other,
-- (Lit::Bool(this), Lit::Bool(other)) => this == other,
-- (Lit::Verbatim(this), Lit::Verbatim(other)) => this.to_string() == other.to_string(),
-- _ => false,
-- }
-- }
--}
--
--#[cfg(feature = "extra-traits")]
--impl Hash for Lit {
-- fn hash<H>(&self, hash: &mut H)
-- where
-- H: Hasher,
-- {
-- match self {
-- Lit::Str(lit) => {
-- hash.write_u8(0);
-- lit.hash(hash);
-- }
-- Lit::ByteStr(lit) => {
-- hash.write_u8(1);
-- lit.hash(hash);
-- }
-- Lit::Byte(lit) => {
-- hash.write_u8(2);
-- lit.hash(hash);
-- }
-- Lit::Char(lit) => {
-- hash.write_u8(3);
-- lit.hash(hash);
-- }
-- Lit::Int(lit) => {
-- hash.write_u8(4);
-- lit.hash(hash);
-- }
-- Lit::Float(lit) => {
-- hash.write_u8(5);
-- lit.hash(hash);
-- }
-- Lit::Bool(lit) => {
-- hash.write_u8(6);
-- lit.hash(hash);
-- }
-- Lit::Verbatim(lit) => {
-- hash.write_u8(7);
-- lit.to_string().hash(hash);
-- }
-- }
-- }
--}
--
- impl LitStr {
- pub fn new(value: &str, span: Span) -> Self {
-- let mut lit = Literal::string(value);
-- lit.set_span(span);
-+ let mut token = Literal::string(value);
-+ token.set_span(span);
- LitStr {
-- repr: Box::new(LitStrRepr {
-- token: lit,
-+ repr: Box::new(LitRepr {
-+ token,
- suffix: Box::<str>::default(),
- }),
- }
- }
-
- pub fn value(&self) -> String {
-- let (value, _) = value::parse_lit_str(&self.repr.token.to_string());
-+ let repr = self.repr.token.to_string();
-+ let (value, _suffix) = value::parse_lit_str(&repr);
- String::from(value)
- }
-
- /// Parse a syntax tree node from the content of this string literal.
- ///
- /// All spans in the syntax tree will point to the span of this `LitStr`.
- ///
- /// # Example
-@@ -306,17 +217,17 @@ impl LitStr {
- .map(|token| respan_token_tree(token, span))
- .collect()
- }
-
- // Token tree with every span replaced by the given one.
- fn respan_token_tree(mut token: TokenTree, span: Span) -> TokenTree {
- match &mut token {
- TokenTree::Group(g) => {
-- let stream = respan_token_stream(g.stream().clone(), span);
-+ let stream = respan_token_stream(g.stream(), span);
- *g = Group::new(g.delimiter(), stream);
- g.set_span(span);
- }
- other => other.set_span(span),
- }
- token
- }
-
-@@ -340,86 +251,124 @@ impl LitStr {
- &self.repr.suffix
- }
- }
-
- impl LitByteStr {
- pub fn new(value: &[u8], span: Span) -> Self {
- let mut token = Literal::byte_string(value);
- token.set_span(span);
-- LitByteStr { token }
-+ LitByteStr {
-+ repr: Box::new(LitRepr {
-+ token,
-+ suffix: Box::<str>::default(),
-+ }),
-+ }
- }
-
- pub fn value(&self) -> Vec<u8> {
-- value::parse_lit_byte_str(&self.token.to_string())
-+ let repr = self.repr.token.to_string();
-+ let (value, _suffix) = value::parse_lit_byte_str(&repr);
-+ value
- }
-
- pub fn span(&self) -> Span {
-- self.token.span()
-+ self.repr.token.span()
- }
-
- pub fn set_span(&mut self, span: Span) {
-- self.token.set_span(span)
-+ self.repr.token.set_span(span)
-+ }
-+
-+ pub fn suffix(&self) -> &str {
-+ &self.repr.suffix
- }
- }
-
- impl LitByte {
- pub fn new(value: u8, span: Span) -> Self {
- let mut token = Literal::u8_suffixed(value);
- token.set_span(span);
-- LitByte { token }
-+ LitByte {
-+ repr: Box::new(LitRepr {
-+ token,
-+ suffix: Box::<str>::default(),
-+ }),
-+ }
- }
-
- pub fn value(&self) -> u8 {
-- value::parse_lit_byte(&self.token.to_string())
-+ let repr = self.repr.token.to_string();
-+ let (value, _suffix) = value::parse_lit_byte(&repr);
-+ value
- }
-
- pub fn span(&self) -> Span {
-- self.token.span()
-+ self.repr.token.span()
- }
-
- pub fn set_span(&mut self, span: Span) {
-- self.token.set_span(span)
-+ self.repr.token.set_span(span)
-+ }
-+
-+ pub fn suffix(&self) -> &str {
-+ &self.repr.suffix
- }
- }
-
- impl LitChar {
- pub fn new(value: char, span: Span) -> Self {
- let mut token = Literal::character(value);
- token.set_span(span);
-- LitChar { token }
-+ LitChar {
-+ repr: Box::new(LitRepr {
-+ token,
-+ suffix: Box::<str>::default(),
-+ }),
-+ }
- }
-
- pub fn value(&self) -> char {
-- value::parse_lit_char(&self.token.to_string())
-+ let repr = self.repr.token.to_string();
-+ let (value, _suffix) = value::parse_lit_char(&repr);
-+ value
- }
-
- pub fn span(&self) -> Span {
-- self.token.span()
-+ self.repr.token.span()
- }
-
- pub fn set_span(&mut self, span: Span) {
-- self.token.set_span(span)
-+ self.repr.token.set_span(span)
-+ }
-+
-+ pub fn suffix(&self) -> &str {
-+ &self.repr.suffix
- }
- }
-
- impl LitInt {
- pub fn new(repr: &str, span: Span) -> Self {
-- if let Some((digits, suffix)) = value::parse_lit_int(repr) {
-- let mut token = value::to_literal(repr);
-- token.set_span(span);
-- LitInt {
-- repr: Box::new(LitIntRepr {
-- token,
-- digits,
-- suffix,
-- }),
-- }
-- } else {
-- panic!("Not an integer literal: `{}`", repr);
-+ let (digits, suffix) = match value::parse_lit_int(repr) {
-+ Some(parse) => parse,
-+ None => panic!("Not an integer literal: `{}`", repr),
-+ };
-+
-+ let mut token = match value::to_literal(repr, &digits, &suffix) {
-+ Some(token) => token,
-+ None => panic!("Unsupported integer literal: `{}`", repr),
-+ };
-+
-+ token.set_span(span);
-+ LitInt {
-+ repr: Box::new(LitIntRepr {
-+ token,
-+ digits,
-+ suffix,
-+ }),
- }
- }
-
- pub fn base10_digits(&self) -> &str {
- &self.repr.digits
- }
-
- /// Parses the literal into a selected number type.
-@@ -487,28 +436,33 @@ impl From<Literal> for LitInt {
- impl Display for LitInt {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- self.repr.token.fmt(formatter)
- }
- }
-
- impl LitFloat {
- pub fn new(repr: &str, span: Span) -> Self {
-- if let Some((digits, suffix)) = value::parse_lit_float(repr) {
-- let mut token = value::to_literal(repr);
-- token.set_span(span);
-- LitFloat {
-- repr: Box::new(LitFloatRepr {
-- token,
-- digits,
-- suffix,
-- }),
-- }
-- } else {
-- panic!("Not a float literal: `{}`", repr);
-+ let (digits, suffix) = match value::parse_lit_float(repr) {
-+ Some(parse) => parse,
-+ None => panic!("Not a float literal: `{}`", repr),
-+ };
-+
-+ let mut token = match value::to_literal(repr, &digits, &suffix) {
-+ Some(token) => token,
-+ None => panic!("Unsupported float literal: `{}`", repr),
-+ };
-+
-+ token.set_span(span);
-+ LitFloat {
-+ repr: Box::new(LitFloatRepr {
-+ token,
-+ digits,
-+ suffix,
-+ }),
- }
- }
-
- pub fn base10_digits(&self) -> &str {
- &self.repr.digits
- }
-
- pub fn base10_parse<N>(&self) -> Result<N>
-@@ -570,35 +524,35 @@ mod debug_impls {
- .finish()
- }
- }
-
- impl Debug for LitByteStr {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- formatter
- .debug_struct("LitByteStr")
-- .field("token", &format_args!("{}", self.token))
-+ .field("token", &format_args!("{}", self.repr.token))
- .finish()
- }
- }
-
- impl Debug for LitByte {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- formatter
- .debug_struct("LitByte")
-- .field("token", &format_args!("{}", self.token))
-+ .field("token", &format_args!("{}", self.repr.token))
- .finish()
- }
- }
-
- impl Debug for LitChar {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- formatter
- .debug_struct("LitChar")
-- .field("token", &format_args!("{}", self.token))
-+ .field("token", &format_args!("{}", self.repr.token))
- .finish()
- }
- }
-
- impl Debug for LitInt {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- formatter
- .debug_struct("LitInt")
-@@ -621,61 +575,102 @@ mod debug_impls {
- formatter
- .debug_struct("LitBool")
- .field("value", &self.value)
- .finish()
- }
- }
- }
-
-+#[cfg(feature = "clone-impls")]
-+impl Clone for LitRepr {
-+ fn clone(&self) -> Self {
-+ LitRepr {
-+ token: self.token.clone(),
-+ suffix: self.suffix.clone(),
-+ }
-+ }
-+}
-+
-+#[cfg(feature = "clone-impls")]
-+impl Clone for LitIntRepr {
-+ fn clone(&self) -> Self {
-+ LitIntRepr {
-+ token: self.token.clone(),
-+ digits: self.digits.clone(),
-+ suffix: self.suffix.clone(),
-+ }
-+ }
-+}
-+
-+#[cfg(feature = "clone-impls")]
-+impl Clone for LitFloatRepr {
-+ fn clone(&self) -> Self {
-+ LitFloatRepr {
-+ token: self.token.clone(),
-+ digits: self.digits.clone(),
-+ suffix: self.suffix.clone(),
-+ }
-+ }
-+}
-+
- macro_rules! lit_extra_traits {
-- ($ty:ident, $($field:ident).+) => {
-- #[cfg(feature = "extra-traits")]
-- impl Eq for $ty {}
-+ ($ty:ident) => {
-+ #[cfg(feature = "clone-impls")]
-+ impl Clone for $ty {
-+ fn clone(&self) -> Self {
-+ $ty {
-+ repr: self.repr.clone(),
-+ }
-+ }
-+ }
-
- #[cfg(feature = "extra-traits")]
- impl PartialEq for $ty {
- fn eq(&self, other: &Self) -> bool {
-- self.$($field).+.to_string() == other.$($field).+.to_string()
-+ self.repr.token.to_string() == other.repr.token.to_string()
- }
- }
-
- #[cfg(feature = "extra-traits")]
- impl Hash for $ty {
- fn hash<H>(&self, state: &mut H)
- where
- H: Hasher,
- {
-- self.$($field).+.to_string().hash(state);
-+ self.repr.token.to_string().hash(state);
- }
- }
-
- #[cfg(feature = "parsing")]
- #[doc(hidden)]
- #[allow(non_snake_case)]
- pub fn $ty(marker: lookahead::TokenMarker) -> $ty {
- match marker {}
- }
- };
- }
-
--lit_extra_traits!(LitStr, repr.token);
--lit_extra_traits!(LitByteStr, token);
--lit_extra_traits!(LitByte, token);
--lit_extra_traits!(LitChar, token);
--lit_extra_traits!(LitInt, repr.token);
--lit_extra_traits!(LitFloat, repr.token);
--lit_extra_traits!(LitBool, value);
-+lit_extra_traits!(LitStr);
-+lit_extra_traits!(LitByteStr);
-+lit_extra_traits!(LitByte);
-+lit_extra_traits!(LitChar);
-+lit_extra_traits!(LitInt);
-+lit_extra_traits!(LitFloat);
-+
-+#[cfg(feature = "parsing")]
-+#[doc(hidden)]
-+#[allow(non_snake_case)]
-+pub fn LitBool(marker: lookahead::TokenMarker) -> LitBool {
-+ match marker {}
-+}
-
- ast_enum! {
- /// The style of a string literal, either plain quoted or a raw string like
- /// `r##"data"##`.
-- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-- /// feature.*
- pub enum StrStyle #no_visit {
- /// An ordinary string like `"data"`.
- Cooked,
- /// A raw string like `r##"data"##`.
- ///
- /// The unsigned integer is the number of `#` symbols used.
- Raw(usize),
- }
-@@ -686,43 +681,93 @@ ast_enum! {
- #[allow(non_snake_case)]
- pub fn Lit(marker: lookahead::TokenMarker) -> Lit {
- match marker {}
- }
-
- #[cfg(feature = "parsing")]
- pub mod parsing {
- use super::*;
-+ use crate::buffer::Cursor;
- use crate::parse::{Parse, ParseStream, Result};
-+ use proc_macro2::Punct;
-
- impl Parse for Lit {
- fn parse(input: ParseStream) -> Result<Self> {
- input.step(|cursor| {
- if let Some((lit, rest)) = cursor.literal() {
- return Ok((Lit::new(lit), rest));
- }
-- while let Some((ident, rest)) = cursor.ident() {
-- let value = if ident == "true" {
-- true
-- } else if ident == "false" {
-- false
-- } else {
-- break;
-- };
-- let lit_bool = LitBool {
-- value,
-- span: ident.span(),
-- };
-- return Ok((Lit::Bool(lit_bool), rest));
-+
-+ if let Some((ident, rest)) = cursor.ident() {
-+ let value = ident == "true";
-+ if value || ident == "false" {
-+ let lit_bool = LitBool {
-+ value,
-+ span: ident.span(),
-+ };
-+ return Ok((Lit::Bool(lit_bool), rest));
-+ }
- }
-+
-+ if let Some((punct, rest)) = cursor.punct() {
-+ if punct.as_char() == '-' {
-+ if let Some((lit, rest)) = parse_negative_lit(punct, rest) {
-+ return Ok((lit, rest));
-+ }
-+ }
-+ }
-+
- Err(cursor.error("expected literal"))
- })
- }
- }
-
-+ fn parse_negative_lit(neg: Punct, cursor: Cursor) -> Option<(Lit, Cursor)> {
-+ let (lit, rest) = cursor.literal()?;
-+
-+ let mut span = neg.span();
-+ span = span.join(lit.span()).unwrap_or(span);
-+
-+ let mut repr = lit.to_string();
-+ repr.insert(0, '-');
-+
-+ if !(repr.ends_with("f32") || repr.ends_with("f64")) {
-+ if let Some((digits, suffix)) = value::parse_lit_int(&repr) {
-+ if let Some(mut token) = value::to_literal(&repr, &digits, &suffix) {
-+ token.set_span(span);
-+ return Some((
-+ Lit::Int(LitInt {
-+ repr: Box::new(LitIntRepr {
-+ token,
-+ digits,
-+ suffix,
-+ }),
-+ }),
-+ rest,
-+ ));
-+ }
-+ }
-+ }
-+
-+ let (digits, suffix) = value::parse_lit_float(&repr)?;
-+ let mut token = value::to_literal(&repr, &digits, &suffix)?;
-+ token.set_span(span);
-+ Some((
-+ Lit::Float(LitFloat {
-+ repr: Box::new(LitFloatRepr {
-+ token,
-+ digits,
-+ suffix,
-+ }),
-+ }),
-+ rest,
-+ ))
-+ }
-+
- impl Parse for LitStr {
- fn parse(input: ParseStream) -> Result<Self> {
- let head = input.fork();
- match input.parse()? {
- Lit::Str(lit) => Ok(lit),
- _ => Err(head.error("expected string literal")),
- }
- }
-@@ -798,29 +843,29 @@ mod printing {
- impl ToTokens for LitStr {
- fn to_tokens(&self, tokens: &mut TokenStream) {
- self.repr.token.to_tokens(tokens);
- }
- }
-
- impl ToTokens for LitByteStr {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-- self.token.to_tokens(tokens);
-+ self.repr.token.to_tokens(tokens);
- }
- }
-
- impl ToTokens for LitByte {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-- self.token.to_tokens(tokens);
-+ self.repr.token.to_tokens(tokens);
- }
- }
-
- impl ToTokens for LitChar {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-- self.token.to_tokens(tokens);
-+ self.repr.token.to_tokens(tokens);
- }
- }
-
- impl ToTokens for LitInt {
- fn to_tokens(&self, tokens: &mut TokenStream) {
- self.repr.token.to_tokens(tokens);
- }
- }
-@@ -850,30 +895,39 @@ mod value {
- /// Interpret a Syn literal from a proc-macro2 literal.
- pub fn new(token: Literal) -> Self {
- let repr = token.to_string();
-
- match byte(&repr, 0) {
- b'"' | b'r' => {
- let (_, suffix) = parse_lit_str(&repr);
- return Lit::Str(LitStr {
-- repr: Box::new(LitStrRepr { token, suffix }),
-+ repr: Box::new(LitRepr { token, suffix }),
- });
- }
- b'b' => match byte(&repr, 1) {
- b'"' | b'r' => {
-- return Lit::ByteStr(LitByteStr { token });
-+ let (_, suffix) = parse_lit_byte_str(&repr);
-+ return Lit::ByteStr(LitByteStr {
-+ repr: Box::new(LitRepr { token, suffix }),
-+ });
- }
- b'\'' => {
-- return Lit::Byte(LitByte { token });
-+ let (_, suffix) = parse_lit_byte(&repr);
-+ return Lit::Byte(LitByte {
-+ repr: Box::new(LitRepr { token, suffix }),
-+ });
- }
- _ => {}
- },
- b'\'' => {
-- return Lit::Char(LitChar { token });
-+ let (_, suffix) = parse_lit_char(&repr);
-+ return Lit::Char(LitChar {
-+ repr: Box::new(LitRepr { token, suffix }),
-+ });
- }
- b'0'..=b'9' | b'-' => {
- if !(repr.ends_with("f32") || repr.ends_with("f64")) {
- if let Some((digits, suffix)) = parse_lit_int(&repr) {
- return Lit::Int(LitInt {
- repr: Box::new(LitIntRepr {
- token,
- digits,
-@@ -900,16 +954,54 @@ mod value {
- });
- }
- }
- _ => {}
- }
-
- panic!("Unrecognized literal: `{}`", repr);
- }
-+
-+ pub fn suffix(&self) -> &str {
-+ match self {
-+ Lit::Str(lit) => lit.suffix(),
-+ Lit::ByteStr(lit) => lit.suffix(),
-+ Lit::Byte(lit) => lit.suffix(),
-+ Lit::Char(lit) => lit.suffix(),
-+ Lit::Int(lit) => lit.suffix(),
-+ Lit::Float(lit) => lit.suffix(),
-+ Lit::Bool(_) | Lit::Verbatim(_) => "",
-+ }
-+ }
-+
-+ pub fn span(&self) -> Span {
-+ match self {
-+ Lit::Str(lit) => lit.span(),
-+ Lit::ByteStr(lit) => lit.span(),
-+ Lit::Byte(lit) => lit.span(),
-+ Lit::Char(lit) => lit.span(),
-+ Lit::Int(lit) => lit.span(),
-+ Lit::Float(lit) => lit.span(),
-+ Lit::Bool(lit) => lit.span,
-+ Lit::Verbatim(lit) => lit.span(),
-+ }
-+ }
-+
-+ pub fn set_span(&mut self, span: Span) {
-+ match self {
-+ Lit::Str(lit) => lit.set_span(span),
-+ Lit::ByteStr(lit) => lit.set_span(span),
-+ Lit::Byte(lit) => lit.set_span(span),
-+ Lit::Char(lit) => lit.set_span(span),
-+ Lit::Int(lit) => lit.set_span(span),
-+ Lit::Float(lit) => lit.set_span(span),
-+ Lit::Bool(lit) => lit.span = span,
-+ Lit::Verbatim(lit) => lit.set_span(span),
-+ }
-+ }
- }
-
- /// Get the byte at offset idx, or a default of `b'\0'` if we're looking
- /// past the end of the input buffer.
- pub fn byte<S: AsRef<[u8]> + ?Sized>(s: &S, idx: usize) -> u8 {
- let s = s.as_ref();
- if idx < s.len() {
- s[idx]
-@@ -999,140 +1091,144 @@ mod value {
- assert_eq!(byte(s, 0), b'r');
- s = &s[1..];
-
- let mut pounds = 0;
- while byte(s, pounds) == b'#' {
- pounds += 1;
- }
- assert_eq!(byte(s, pounds), b'"');
-- assert_eq!(byte(s, s.len() - pounds - 1), b'"');
-- for end in s[s.len() - pounds..].bytes() {
-+ let close = s.rfind('"').unwrap();
-+ for end in s[close + 1..close + 1 + pounds].bytes() {
- assert_eq!(end, b'#');
- }
-
-- let content = s[pounds + 1..s.len() - pounds - 1]
-- .to_owned()
-- .into_boxed_str();
-- let suffix = Box::<str>::default(); // todo
-+ let content = s[pounds + 1..close].to_owned().into_boxed_str();
-+ let suffix = s[close + 1 + pounds..].to_owned().into_boxed_str();
- (content, suffix)
- }
-
-- pub fn parse_lit_byte_str(s: &str) -> Vec<u8> {
-+ // Returns (content, suffix).
-+ pub fn parse_lit_byte_str(s: &str) -> (Vec<u8>, Box<str>) {
- assert_eq!(byte(s, 0), b'b');
- match byte(s, 1) {
- b'"' => parse_lit_byte_str_cooked(s),
- b'r' => parse_lit_byte_str_raw(s),
- _ => unreachable!(),
- }
- }
-
- // Clippy false positive
- // https://github.com/rust-lang-nursery/rust-clippy/issues/2329
- #[allow(clippy::needless_continue)]
-- fn parse_lit_byte_str_cooked(mut s: &str) -> Vec<u8> {
-+ fn parse_lit_byte_str_cooked(mut s: &str) -> (Vec<u8>, Box<str>) {
- assert_eq!(byte(s, 0), b'b');
- assert_eq!(byte(s, 1), b'"');
- s = &s[2..];
-
- // We're going to want to have slices which don't respect codepoint boundaries.
-- let mut s = s.as_bytes();
-+ let mut v = s.as_bytes();
-
- let mut out = Vec::new();
- 'outer: loop {
-- let byte = match byte(s, 0) {
-+ let byte = match byte(v, 0) {
- b'"' => break,
- b'\\' => {
-- let b = byte(s, 1);
-- s = &s[2..];
-+ let b = byte(v, 1);
-+ v = &v[2..];
- match b {
- b'x' => {
-- let (b, rest) = backslash_x(s);
-- s = rest;
-+ let (b, rest) = backslash_x(v);
-+ v = rest;
- b
- }
- b'n' => b'\n',
- b'r' => b'\r',
- b't' => b'\t',
- b'\\' => b'\\',
- b'0' => b'\0',
- b'\'' => b'\'',
- b'"' => b'"',
- b'\r' | b'\n' => loop {
-- let byte = byte(s, 0);
-+ let byte = byte(v, 0);
- let ch = char::from_u32(u32::from(byte)).unwrap();
- if ch.is_whitespace() {
-- s = &s[1..];
-+ v = &v[1..];
- } else {
- continue 'outer;
- }
- },
- b => panic!("unexpected byte {:?} after \\ character in byte literal", b),
- }
- }
- b'\r' => {
-- assert_eq!(byte(s, 1), b'\n', "Bare CR not allowed in string");
-- s = &s[2..];
-+ assert_eq!(byte(v, 1), b'\n', "Bare CR not allowed in string");
-+ v = &v[2..];
- b'\n'
- }
- b => {
-- s = &s[1..];
-+ v = &v[1..];
- b
- }
- };
- out.push(byte);
- }
-
-- assert_eq!(s, b"\"");
-- out
-+ assert_eq!(byte(v, 0), b'"');
-+ let suffix = s[s.len() - v.len() + 1..].to_owned().into_boxed_str();
-+ (out, suffix)
- }
-
-- fn parse_lit_byte_str_raw(s: &str) -> Vec<u8> {
-+ fn parse_lit_byte_str_raw(s: &str) -> (Vec<u8>, Box<str>) {
- assert_eq!(byte(s, 0), b'b');
-- String::from(parse_lit_str_raw(&s[1..]).0).into_bytes()
-+ let (value, suffix) = parse_lit_str_raw(&s[1..]);
-+ (String::from(value).into_bytes(), suffix)
- }
-
-- pub fn parse_lit_byte(s: &str) -> u8 {
-+ // Returns (value, suffix).
-+ pub fn parse_lit_byte(s: &str) -> (u8, Box<str>) {
- assert_eq!(byte(s, 0), b'b');
- assert_eq!(byte(s, 1), b'\'');
-
- // We're going to want to have slices which don't respect codepoint boundaries.
-- let mut s = s[2..].as_bytes();
-+ let mut v = s[2..].as_bytes();
-
-- let b = match byte(s, 0) {
-+ let b = match byte(v, 0) {
- b'\\' => {
-- let b = byte(s, 1);
-- s = &s[2..];
-+ let b = byte(v, 1);
-+ v = &v[2..];
- match b {
- b'x' => {
-- let (b, rest) = backslash_x(s);
-- s = rest;
-+ let (b, rest) = backslash_x(v);
-+ v = rest;
- b
- }
- b'n' => b'\n',
- b'r' => b'\r',
- b't' => b'\t',
- b'\\' => b'\\',
- b'0' => b'\0',
- b'\'' => b'\'',
- b'"' => b'"',
- b => panic!("unexpected byte {:?} after \\ character in byte literal", b),
- }
- }
- b => {
-- s = &s[1..];
-+ v = &v[1..];
- b
- }
- };
-
-- assert_eq!(byte(s, 0), b'\'');
-- b
-+ assert_eq!(byte(v, 0), b'\'');
-+ let suffix = s[s.len() - v.len() + 1..].to_owned().into_boxed_str();
-+ (b, suffix)
- }
-
-- pub fn parse_lit_char(mut s: &str) -> char {
-+ // Returns (value, suffix).
-+ pub fn parse_lit_char(mut s: &str) -> (char, Box<str>) {
- assert_eq!(byte(s, 0), b'\'');
- s = &s[1..];
-
- let ch = match byte(s, 0) {
- b'\\' => {
- let b = byte(s, 1);
- s = &s[2..];
- match b {
-@@ -1158,18 +1254,19 @@ mod value {
- }
- }
- _ => {
- let ch = next_chr(s);
- s = &s[ch.len_utf8()..];
- ch
- }
- };
-- assert_eq!(s, "\'", "Expected end of char literal");
-- ch
-+ assert_eq!(byte(s, 0), b'\'');
-+ let suffix = s[1..].to_owned().into_boxed_str();
-+ (ch, suffix)
- }
-
- fn backslash_x<S>(s: &S) -> (u8, &S)
- where
- S: Index<RangeFrom<usize>, Output = S> + AsRef<[u8]> + ?Sized,
- {
- let mut ch = 0;
- let b0 = byte(s, 0);
-@@ -1329,17 +1426,21 @@ mod value {
- if has_e || has_dot {
- return None;
- }
- has_dot = true;
- bytes[write] = b'.';
- }
- b'e' | b'E' => {
- if has_e {
-- return None;
-+ if has_exponent {
-+ break;
-+ } else {
-+ return None;
-+ }
- }
- has_e = true;
- bytes[write] = b'e';
- }
- b'-' | b'+' => {
- if has_sign || has_exponent || !has_e {
- return None;
- }
-@@ -1367,16 +1468,38 @@ mod value {
- digits.truncate(write);
- if suffix.is_empty() || crate::ident::xid_ok(&suffix) {
- Some((digits.into_boxed_str(), suffix.into_boxed_str()))
- } else {
- None
- }
- }
-
-- pub fn to_literal(s: &str) -> Literal {
-- let stream = s.parse::<TokenStream>().unwrap();
-- match stream.into_iter().next().unwrap() {
-- TokenTree::Literal(l) => l,
-- _ => unreachable!(),
-+ pub fn to_literal(repr: &str, digits: &str, suffix: &str) -> Option<Literal> {
-+ if repr.starts_with('-') {
-+ if suffix == "f64" {
-+ digits.parse().ok().map(Literal::f64_suffixed)
-+ } else if suffix == "f32" {
-+ digits.parse().ok().map(Literal::f32_suffixed)
-+ } else if suffix == "i64" {
-+ digits.parse().ok().map(Literal::i64_suffixed)
-+ } else if suffix == "i32" {
-+ digits.parse().ok().map(Literal::i32_suffixed)
-+ } else if suffix == "i16" {
-+ digits.parse().ok().map(Literal::i16_suffixed)
-+ } else if suffix == "i8" {
-+ digits.parse().ok().map(Literal::i8_suffixed)
-+ } else if !suffix.is_empty() {
-+ None
-+ } else if digits.contains('.') {
-+ digits.parse().ok().map(Literal::f64_unsuffixed)
-+ } else {
-+ digits.parse().ok().map(Literal::i64_unsuffixed)
-+ }
-+ } else {
-+ let stream = repr.parse::<TokenStream>().unwrap();
-+ match stream.into_iter().next().unwrap() {
-+ TokenTree::Literal(l) => Some(l),
-+ _ => unreachable!(),
-+ }
- }
- }
- }
-diff --git a/third_party/rust/syn/src/mac.rs b/third_party/rust/syn/src/mac.rs
---- a/third_party/rust/syn/src/mac.rs
-+++ b/third_party/rust/syn/src/mac.rs
-@@ -1,79 +1,56 @@
- use super::*;
- use crate::token::{Brace, Bracket, Paren};
- use proc_macro2::TokenStream;
- #[cfg(feature = "parsing")]
--use proc_macro2::{Delimiter, Span, TokenTree};
-+use proc_macro2::{Delimiter, Group, Span, TokenTree};
-
- #[cfg(feature = "parsing")]
- use crate::parse::{Parse, ParseStream, Parser, Result};
--#[cfg(feature = "extra-traits")]
--use crate::tt::TokenStreamHelper;
--#[cfg(feature = "extra-traits")]
--use std::hash::{Hash, Hasher};
-
- ast_struct! {
- /// A macro invocation: `println!("{}", mac)`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
-- pub struct Macro #manual_extra_traits {
-+ pub struct Macro {
- pub path: Path,
- pub bang_token: Token![!],
- pub delimiter: MacroDelimiter,
- pub tokens: TokenStream,
- }
- }
-
- ast_enum! {
- /// A grouping token that surrounds a macro body: `m!(...)` or `m!{...}` or `m![...]`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub enum MacroDelimiter {
- Paren(Paren),
- Brace(Brace),
- Bracket(Bracket),
- }
- }
-
--#[cfg(feature = "extra-traits")]
--impl Eq for Macro {}
--
--#[cfg(feature = "extra-traits")]
--impl PartialEq for Macro {
-- fn eq(&self, other: &Self) -> bool {
-- self.path == other.path
-- && self.bang_token == other.bang_token
-- && self.delimiter == other.delimiter
-- && TokenStreamHelper(&self.tokens) == TokenStreamHelper(&other.tokens)
-- }
--}
--
--#[cfg(feature = "extra-traits")]
--impl Hash for Macro {
-- fn hash<H>(&self, state: &mut H)
-- where
-- H: Hasher,
-- {
-- self.path.hash(state);
-- self.bang_token.hash(state);
-- self.delimiter.hash(state);
-- TokenStreamHelper(&self.tokens).hash(state);
-- }
--}
--
- #[cfg(feature = "parsing")]
--fn delimiter_span(delimiter: &MacroDelimiter) -> Span {
-- match delimiter {
-+fn delimiter_span_close(macro_delimiter: &MacroDelimiter) -> Span {
-+ let delimiter = match macro_delimiter {
-+ MacroDelimiter::Paren(_) => Delimiter::Parenthesis,
-+ MacroDelimiter::Brace(_) => Delimiter::Brace,
-+ MacroDelimiter::Bracket(_) => Delimiter::Bracket,
-+ };
-+ let mut group = Group::new(delimiter, TokenStream::new());
-+ group.set_span(match macro_delimiter {
- MacroDelimiter::Paren(token) => token.span,
- MacroDelimiter::Brace(token) => token.span,
- MacroDelimiter::Bracket(token) => token.span,
-- }
-+ });
-+ group.span_close()
- }
-
- impl Macro {
- /// Parse the tokens within the macro invocation's delimiters into a syntax
- /// tree.
- ///
- /// This is equivalent to `syn::parse2::<T>(mac.tokens)` except that it
- /// produces a more useful span when `tokens` is empty.
-@@ -158,19 +135,17 @@ impl Macro {
- pub fn parse_body<T: Parse>(&self) -> Result<T> {
- self.parse_body_with(T::parse)
- }
-
- /// Parse the tokens within the macro invocation's delimiters using the
- /// given parser.
- #[cfg(feature = "parsing")]
- pub fn parse_body_with<F: Parser>(&self, parser: F) -> Result<F::Output> {
-- // TODO: see if we can get a group.span_close() span in here as the
-- // scope, rather than the span of the whole group.
-- let scope = delimiter_span(&self.delimiter);
-+ let scope = delimiter_span_close(&self.delimiter);
- crate::parse::parse_scoped(parser, scope, self.tokens.clone())
- }
- }
-
- #[cfg(feature = "parsing")]
- pub fn parse_delimiter(input: ParseStream) -> Result<(MacroDelimiter, TokenStream)> {
- input.step(|cursor| {
- if let Some((TokenTree::Group(g), rest)) = cursor.token_tree() {
-diff --git a/third_party/rust/syn/src/macros.rs b/third_party/rust/syn/src/macros.rs
---- a/third_party/rust/syn/src/macros.rs
-+++ b/third_party/rust/syn/src/macros.rs
-@@ -1,56 +1,33 @@
- macro_rules! ast_struct {
- (
- [$($attrs_pub:tt)*]
- struct $name:ident #full $($rest:tt)*
- ) => {
- #[cfg(feature = "full")]
-- #[cfg_attr(feature = "extra-traits", derive(Debug, Eq, PartialEq, Hash))]
-- #[cfg_attr(feature = "clone-impls", derive(Clone))]
- $($attrs_pub)* struct $name $($rest)*
-
- #[cfg(not(feature = "full"))]
-- #[cfg_attr(feature = "extra-traits", derive(Debug, Eq, PartialEq, Hash))]
-- #[cfg_attr(feature = "clone-impls", derive(Clone))]
- $($attrs_pub)* struct $name {
-- _noconstruct: (),
-+ _noconstruct: ::std::marker::PhantomData<::proc_macro2::Span>,
- }
-
- #[cfg(all(not(feature = "full"), feature = "printing"))]
- impl ::quote::ToTokens for $name {
- fn to_tokens(&self, _: &mut ::proc_macro2::TokenStream) {
- unreachable!()
- }
- }
- };
-
- (
- [$($attrs_pub:tt)*]
-- struct $name:ident #manual_extra_traits $($rest:tt)*
-- ) => {
-- #[cfg_attr(feature = "extra-traits", derive(Debug))]
-- #[cfg_attr(feature = "clone-impls", derive(Clone))]
-- $($attrs_pub)* struct $name $($rest)*
-- };
--
-- (
-- [$($attrs_pub:tt)*]
-- struct $name:ident #manual_extra_traits_debug $($rest:tt)*
-- ) => {
-- #[cfg_attr(feature = "clone-impls", derive(Clone))]
-- $($attrs_pub)* struct $name $($rest)*
-- };
--
-- (
-- [$($attrs_pub:tt)*]
- struct $name:ident $($rest:tt)*
- ) => {
-- #[cfg_attr(feature = "extra-traits", derive(Debug, Eq, PartialEq, Hash))]
-- #[cfg_attr(feature = "clone-impls", derive(Clone))]
- $($attrs_pub)* struct $name $($rest)*
- };
-
- ($($t:tt)*) => {
- strip_attrs_pub!(ast_struct!($($t)*));
- };
- }
-
-@@ -60,29 +37,18 @@ macro_rules! ast_enum {
- [$($attrs_pub:tt)*]
- enum $name:ident #no_visit $($rest:tt)*
- ) => (
- ast_enum!([$($attrs_pub)*] enum $name $($rest)*);
- );
-
- (
- [$($attrs_pub:tt)*]
-- enum $name:ident #manual_extra_traits $($rest:tt)*
-- ) => (
-- #[cfg_attr(feature = "extra-traits", derive(Debug))]
-- #[cfg_attr(feature = "clone-impls", derive(Clone))]
-- $($attrs_pub)* enum $name $($rest)*
-- );
--
-- (
-- [$($attrs_pub:tt)*]
- enum $name:ident $($rest:tt)*
- ) => (
-- #[cfg_attr(feature = "extra-traits", derive(Debug, Eq, PartialEq, Hash))]
-- #[cfg_attr(feature = "clone-impls", derive(Clone))]
- $($attrs_pub)* enum $name $($rest)*
- );
-
- ($($t:tt)*) => {
- strip_attrs_pub!(ast_enum!($($t)*));
- };
- }
-
-@@ -115,36 +81,43 @@ macro_rules! ast_enum_of_structs_impl {
- )*
- }
-
- $($remaining:tt)*
- ) => {
- check_keyword_matches!(pub $pub);
- check_keyword_matches!(enum $enum);
-
-- $(
-- $(
-- impl From<$member> for $name {
-- fn from(e: $member) -> $name {
-- $name::$variant(e)
-- }
-- }
-- )*
-- )*
-+ $($(
-+ ast_enum_from_struct!($name::$variant, $member);
-+ )*)*
-
- #[cfg(feature = "printing")]
- generate_to_tokens! {
- $($remaining)*
- ()
- tokens
- $name { $($variant $($member)*,)* }
- }
- };
- }
-
-+macro_rules! ast_enum_from_struct {
-+ // No From<TokenStream> for verbatim variants.
-+ ($name:ident::Verbatim, $member:ident) => {};
-+
-+ ($name:ident::$variant:ident, $member:ident) => {
-+ impl From<$member> for $name {
-+ fn from(e: $member) -> $name {
-+ $name::$variant(e)
-+ }
-+ }
-+ };
-+}
-+
- #[cfg(feature = "printing")]
- macro_rules! generate_to_tokens {
- (do_not_generate_to_tokens $($foo:tt)*) => ();
-
- (($($arms:tt)*) $tokens:ident $name:ident { $variant:ident, $($next:tt)*}) => {
- generate_to_tokens!(
- ($($arms)* $name::$variant => {})
- $tokens $name { $($next)* }
-diff --git a/third_party/rust/syn/src/op.rs b/third_party/rust/syn/src/op.rs
---- a/third_party/rust/syn/src/op.rs
-+++ b/third_party/rust/syn/src/op.rs
-@@ -1,14 +1,13 @@
- ast_enum! {
- /// A binary operator: `+`, `+=`, `&`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
-- #[cfg_attr(feature = "clone-impls", derive(Copy))]
- pub enum BinOp {
- /// The `+` operator (addition)
- Add(Token![+]),
- /// The `-` operator (subtraction)
- Sub(Token![-]),
- /// The `*` operator (multiplication)
- Mul(Token![*]),
- /// The `/` operator (division)
-@@ -62,19 +61,18 @@ ast_enum! {
- /// The `>>=` operator
- ShrEq(Token![>>=]),
- }
- }
-
- ast_enum! {
- /// A unary operator: `*`, `!`, `-`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
-- #[cfg_attr(feature = "clone-impls", derive(Copy))]
- pub enum UnOp {
- /// The `*` operator for dereferencing
- Deref(Token![*]),
- /// The `!` operator for logical inversion
- Not(Token![!]),
- /// The `-` operator for negation
- Neg(Token![-]),
- }
-diff --git a/third_party/rust/syn/src/parse.rs b/third_party/rust/syn/src/parse.rs
---- a/third_party/rust/syn/src/parse.rs
-+++ b/third_party/rust/syn/src/parse.rs
-@@ -21,18 +21,18 @@
- //! procedural macro through [`parse_macro_input!`] as shown at the bottom of
- //! the snippet. If the caller provides syntactically invalid input to the
- //! procedural macro, they will receive a helpful compiler error message
- //! pointing out the exact token that triggered the failure to parse.
- //!
- //! [`parse_macro_input!`]: ../macro.parse_macro_input.html
- //!
- //! ```
--//! extern crate proc_macro;
--//!
-+//! # extern crate proc_macro;
-+//! #
- //! use proc_macro::TokenStream;
- //! use syn::{braced, parse_macro_input, token, Field, Ident, Result, Token};
- //! use syn::parse::{Parse, ParseStream};
- //! use syn::punctuated::Punctuated;
- //!
- //! enum Item {
- //! Struct(ItemStruct),
- //! Enum(ItemEnum),
-@@ -104,19 +104,17 @@
- //! ```
- //! use syn::Type;
- //!
- //! # fn run_parser() -> syn::Result<()> {
- //! let t: Type = syn::parse_str("std::collections::HashMap<String, Value>")?;
- //! # Ok(())
- //! # }
- //! #
--//! # fn main() {
--//! # run_parser().unwrap();
--//! # }
-+//! # run_parser().unwrap();
- //! ```
- //!
- //! The [`parse_quote!`] macro also uses this approach.
- //!
- //! [`parse_quote!`]: ../macro.parse_quote.html
- //!
- //! # The `Parser` trait
- //!
-@@ -150,18 +148,18 @@
- //!
- //! In these cases the types provide a choice of parser functions rather than a
- //! single `Parse` implementation, and those parser functions can be invoked
- //! through the [`Parser`] trait.
- //!
- //! [`Parser`]: trait.Parser.html
- //!
- //! ```
--//! extern crate proc_macro;
--//!
-+//! # extern crate proc_macro;
-+//! #
- //! use proc_macro::TokenStream;
- //! use syn::parse::Parser;
- //! use syn::punctuated::Punctuated;
- //! use syn::{Attribute, Expr, PathSegment, Result, Token};
- //!
- //! fn call_some_parser_methods(input: TokenStream) -> Result<()> {
- //! // Parse a nonempty sequence of path segments separated by `::` punctuation
- //! // with no trailing punctuation.
-@@ -181,17 +179,17 @@
- //! let _attrs = parser.parse(tokens)?;
- //!
- //! Ok(())
- //! }
- //! ```
- //!
- //! ---
- //!
--//! *This module is available if Syn is built with the `"parsing"` feature.*
-+//! *This module is available only if Syn is built with the `"parsing"` feature.*
-
- #[path = "discouraged.rs"]
- pub mod discouraged;
-
- use std::cell::Cell;
- use std::fmt::{self, Debug, Display};
- use std::marker::PhantomData;
- use std::mem;
-@@ -212,16 +210,21 @@ use crate::lookahead;
- use crate::punctuated::Punctuated;
- use crate::token::Token;
-
- pub use crate::error::{Error, Result};
- pub use crate::lookahead::{Lookahead1, Peek};
-
- /// Parsing interface implemented by all types that can be parsed in a default
- /// way from a token stream.
-+///
-+/// Refer to the [module documentation] for details about implementing and using
-+/// the `Parse` trait.
-+///
-+/// [module documentation]: self
- pub trait Parse: Sized {
- fn parse(input: ParseStream) -> Result<Self>;
- }
-
- /// Input to a Syn parser function.
- ///
- /// See the methods of this type under the documentation of [`ParseBuffer`]. For
- /// an overview of parsing in Syn, refer to the [module documentation].
-@@ -258,23 +261,26 @@ pub struct ParseBuffer<'a> {
- // ParseBuffer<'a>, upcast to ParseBuffer<'short> for some lifetime shorter
- // than 'a, and then assign a Cursor<'short> into the Cell.
- //
- // By extension, it would not be safe to expose an API that accepts a
- // Cursor<'a> and trusts that it lives as long as the cursor currently in
- // the cell.
- cell: Cell<Cursor<'static>>,
- marker: PhantomData<Cursor<'a>>,
-- unexpected: Rc<Cell<Option<Span>>>,
-+ unexpected: Cell<Option<Rc<Cell<Unexpected>>>>,
- }
-
- impl<'a> Drop for ParseBuffer<'a> {
- fn drop(&mut self) {
-- if !self.is_empty() && self.unexpected.get().is_none() {
-- self.unexpected.set(Some(self.cursor().span()));
-+ if let Some(unexpected_span) = span_of_unexpected_ignoring_nones(self.cursor()) {
-+ let (inner, old_span) = inner_unexpected(self);
-+ if old_span.is_none() {
-+ inner.set(Unexpected::Some(unexpected_span));
-+ }
- }
- }
- }
-
- impl<'a> Display for ParseBuffer<'a> {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- Display::fmt(&self.cursor().token_stream(), f)
- }
-@@ -319,25 +325,22 @@ impl<'a> Debug for ParseBuffer<'a> {
- /// #
- /// # fn remainder_after_skipping_past_next_at(
- /// # input: ParseStream,
- /// # ) -> Result<proc_macro2::TokenStream> {
- /// # skip_past_next_at(input)?;
- /// # input.parse()
- /// # }
- /// #
--/// # fn main() {
--/// # use syn::parse::Parser;
--/// # let remainder = remainder_after_skipping_past_next_at
--/// # .parse_str("a @ b c")
--/// # .unwrap();
--/// # assert_eq!(remainder.to_string(), "b c");
--/// # }
-+/// # use syn::parse::Parser;
-+/// # let remainder = remainder_after_skipping_past_next_at
-+/// # .parse_str("a @ b c")
-+/// # .unwrap();
-+/// # assert_eq!(remainder.to_string(), "b c");
- /// ```
--#[derive(Copy, Clone)]
- pub struct StepCursor<'c, 'a> {
- scope: Span,
- // This field is covariant in 'c.
- cursor: Cursor<'c>,
- // This field is contravariant in 'c. Together these make StepCursor
- // invariant in 'c. Also covariant in 'a. The user cannot cast 'c to a
- // different lifetime but can upcast into a StepCursor with a shorter
- // lifetime 'a.
-@@ -351,16 +354,24 @@ pub struct StepCursor<'c, 'a> {
- impl<'c, 'a> Deref for StepCursor<'c, 'a> {
- type Target = Cursor<'c>;
-
- fn deref(&self) -> &Self::Target {
- &self.cursor
- }
- }
-
-+impl<'c, 'a> Copy for StepCursor<'c, 'a> {}
-+
-+impl<'c, 'a> Clone for StepCursor<'c, 'a> {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+}
-+
- impl<'c, 'a> StepCursor<'c, 'a> {
- /// Triggers an error at the current position of the parse stream.
- ///
- /// The `ParseStream::step` invocation will return this same error without
- /// advancing the stream state.
- pub fn error<T: Display>(self, message: T) -> Error {
- error::new_at(self.scope, self.cursor, message)
- }
-@@ -370,46 +381,91 @@ pub(crate) fn advance_step_cursor<'c, 'a
- // Refer to the comments within the StepCursor definition. We use the
- // fact that a StepCursor<'c, 'a> exists as proof that 'c outlives 'a.
- // Cursor is covariant in its lifetime parameter so we can cast a
- // Cursor<'c> to one with the shorter lifetime Cursor<'a>.
- let _ = proof;
- unsafe { mem::transmute::<Cursor<'c>, Cursor<'a>>(to) }
- }
-
--fn skip(input: ParseStream) -> bool {
-- input
-- .step(|cursor| {
-- if let Some((_lifetime, rest)) = cursor.lifetime() {
-- Ok((true, rest))
-- } else if let Some((_token, rest)) = cursor.token_tree() {
-- Ok((true, rest))
-- } else {
-- Ok((false, *cursor))
-- }
-- })
-- .unwrap()
--}
--
- pub(crate) fn new_parse_buffer(
- scope: Span,
- cursor: Cursor,
-- unexpected: Rc<Cell<Option<Span>>>,
-+ unexpected: Rc<Cell<Unexpected>>,
- ) -> ParseBuffer {
- ParseBuffer {
- scope,
- // See comment on `cell` in the struct definition.
- cell: Cell::new(unsafe { mem::transmute::<Cursor, Cursor<'static>>(cursor) }),
- marker: PhantomData,
-- unexpected,
-+ unexpected: Cell::new(Some(unexpected)),
-+ }
-+}
-+
-+pub(crate) enum Unexpected {
-+ None,
-+ Some(Span),
-+ Chain(Rc<Cell<Unexpected>>),
-+}
-+
-+impl Default for Unexpected {
-+ fn default() -> Self {
-+ Unexpected::None
-+ }
-+}
-+
-+impl Clone for Unexpected {
-+ fn clone(&self) -> Self {
-+ match self {
-+ Unexpected::None => Unexpected::None,
-+ Unexpected::Some(span) => Unexpected::Some(*span),
-+ Unexpected::Chain(next) => Unexpected::Chain(next.clone()),
-+ }
- }
- }
-
--pub(crate) fn get_unexpected(buffer: &ParseBuffer) -> Rc<Cell<Option<Span>>> {
-- buffer.unexpected.clone()
-+// We call this on Cell<Unexpected> and Cell<Option<T>> where temporarily
-+// swapping in a None is cheap.
-+fn cell_clone<T: Default + Clone>(cell: &Cell<T>) -> T {
-+ let prev = cell.take();
-+ let ret = prev.clone();
-+ cell.set(prev);
-+ ret
-+}
-+
-+fn inner_unexpected(buffer: &ParseBuffer) -> (Rc<Cell<Unexpected>>, Option<Span>) {
-+ let mut unexpected = get_unexpected(buffer);
-+ loop {
-+ match cell_clone(&unexpected) {
-+ Unexpected::None => return (unexpected, None),
-+ Unexpected::Some(span) => return (unexpected, Some(span)),
-+ Unexpected::Chain(next) => unexpected = next,
-+ }
-+ }
-+}
-+
-+pub(crate) fn get_unexpected(buffer: &ParseBuffer) -> Rc<Cell<Unexpected>> {
-+ cell_clone(&buffer.unexpected).unwrap()
-+}
-+
-+fn span_of_unexpected_ignoring_nones(mut cursor: Cursor) -> Option<Span> {
-+ if cursor.eof() {
-+ return None;
-+ }
-+ while let Some((inner, _span, rest)) = cursor.group(Delimiter::None) {
-+ if let Some(unexpected) = span_of_unexpected_ignoring_nones(inner) {
-+ return Some(unexpected);
-+ }
-+ cursor = rest;
-+ }
-+ if cursor.eof() {
-+ None
-+ } else {
-+ Some(cursor.span())
-+ }
- }
-
- impl<'a> ParseBuffer<'a> {
- /// Parses a syntax tree node of type `T`, advancing the position of our
- /// parse stream past it.
- pub fn parse<T: Parse>(&self) -> Result<T> {
- T::parse(self)
- }
-@@ -561,24 +617,27 @@ impl<'a> ParseBuffer<'a> {
- /// input.parse().map(UnionOrMacro::Union)
- /// } else {
- /// input.parse().map(UnionOrMacro::Macro)
- /// }
- /// }
- /// }
- /// ```
- pub fn peek2<T: Peek>(&self, token: T) -> bool {
-- let ahead = self.fork();
-- skip(&ahead) && ahead.peek(token)
-+ let _ = token;
-+ self.cursor().skip().map_or(false, T::Token::peek)
- }
-
- /// Looks at the third-next token in the parse stream.
- pub fn peek3<T: Peek>(&self, token: T) -> bool {
-- let ahead = self.fork();
-- skip(&ahead) && skip(&ahead) && ahead.peek(token)
-+ let _ = token;
-+ self.cursor()
-+ .skip()
-+ .and_then(Cursor::skip)
-+ .map_or(false, T::Token::peek)
- }
-
- /// Parses zero or more occurrences of `T` separated by punctuation of type
- /// `P`, with optional trailing punctuation.
- ///
- /// Parsing continues until the end of this parse stream. The entire content
- /// of this parse stream must consist of `T` and `P`.
- ///
-@@ -610,22 +669,20 @@ impl<'a> ParseBuffer<'a> {
- /// ident: input.parse()?,
- /// paren_token: parenthesized!(content in input),
- /// fields: content.parse_terminated(Type::parse)?,
- /// semi_token: input.parse()?,
- /// })
- /// }
- /// }
- /// #
-- /// # fn main() {
-- /// # let input = quote! {
-- /// # struct S(A, B);
-- /// # };
-- /// # syn::parse2::<TupleStruct>(input).unwrap();
-- /// # }
-+ /// # let input = quote! {
-+ /// # struct S(A, B);
-+ /// # };
-+ /// # syn::parse2::<TupleStruct>(input).unwrap();
- /// ```
- pub fn parse_terminated<T, P: Parse>(
- &self,
- parser: fn(ParseStream) -> Result<T>,
- ) -> Result<Punctuated<T, P>> {
- Punctuated::parse_terminated_with(self, parser)
- }
-
-@@ -842,18 +899,18 @@ impl<'a> ParseBuffer<'a> {
- /// }
- /// ```
- pub fn fork(&self) -> Self {
- ParseBuffer {
- scope: self.scope,
- cell: self.cell.clone(),
- marker: PhantomData,
- // Not the parent's unexpected. Nothing cares whether the clone
-- // parses all the way.
-- unexpected: Rc::new(Cell::new(None)),
-+ // parses all the way unless we `advance_to`.
-+ unexpected: Cell::new(Some(Rc::new(Cell::new(Unexpected::None)))),
- }
- }
-
- /// Triggers an error at the current position of the parse stream.
- ///
- /// # Example
- ///
- /// ```
-@@ -918,23 +975,21 @@ impl<'a> ParseBuffer<'a> {
- /// #
- /// # fn remainder_after_skipping_past_next_at(
- /// # input: ParseStream,
- /// # ) -> Result<proc_macro2::TokenStream> {
- /// # skip_past_next_at(input)?;
- /// # input.parse()
- /// # }
- /// #
-- /// # fn main() {
-- /// # use syn::parse::Parser;
-- /// # let remainder = remainder_after_skipping_past_next_at
-- /// # .parse_str("a @ b c")
-- /// # .unwrap();
-- /// # assert_eq!(remainder.to_string(), "b c");
-- /// # }
-+ /// # use syn::parse::Parser;
-+ /// # let remainder = remainder_after_skipping_past_next_at
-+ /// # .parse_str("a @ b c")
-+ /// # .unwrap();
-+ /// # assert_eq!(remainder.to_string(), "b c");
- /// ```
- pub fn step<F, R>(&self, function: F) -> Result<R>
- where
- F: for<'c> FnOnce(StepCursor<'c, 'a>) -> Result<(R, Cursor<'c>)>,
- {
- // Since the user's function is required to work for any 'c, we know
- // that the Cursor<'c> they return is either derived from the input
- // StepCursor<'c, 'a> or from a Cursor<'static>.
-@@ -956,27 +1011,39 @@ impl<'a> ParseBuffer<'a> {
- scope: self.scope,
- cursor: self.cell.get(),
- marker: PhantomData,
- })?;
- self.cell.set(rest);
- Ok(node)
- }
-
-+ /// Returns the `Span` of the next token in the parse stream, or
-+ /// `Span::call_site()` if this parse stream has completely exhausted its
-+ /// input `TokenStream`.
-+ pub fn span(&self) -> Span {
-+ let cursor = self.cursor();
-+ if cursor.eof() {
-+ self.scope
-+ } else {
-+ crate::buffer::open_span_of_group(cursor)
-+ }
-+ }
-+
- /// Provides low-level access to the token representation underlying this
- /// parse stream.
- ///
- /// Cursors are immutable so no operations you perform against the cursor
- /// will affect the state of this parse stream.
- pub fn cursor(&self) -> Cursor<'a> {
- self.cell.get()
- }
-
- fn check_unexpected(&self) -> Result<()> {
-- match self.unexpected.get() {
-+ match inner_unexpected(self).1 {
- Some(span) => Err(Error::new(span, "unexpected token")),
- None => Ok(()),
- }
- }
- }
-
- impl<T: Parse> Parse for Box<T> {
- fn parse(input: ParseStream) -> Result<Self> {
-@@ -1043,32 +1110,32 @@ impl Parse for Literal {
- }
-
- /// Parser that can parse Rust tokens into a particular syntax tree node.
- ///
- /// Refer to the [module documentation] for details about parsing in Syn.
- ///
- /// [module documentation]: self
- ///
--/// *This trait is available if Syn is built with the `"parsing"` feature.*
-+/// *This trait is available only if Syn is built with the `"parsing"` feature.*
- pub trait Parser: Sized {
- type Output;
-
- /// Parse a proc-macro2 token stream into the chosen syntax tree node.
- ///
- /// This function will check that the input is fully parsed. If there are
- /// any unparsed tokens at the end of the stream, an error is returned.
- fn parse2(self, tokens: TokenStream) -> Result<Self::Output>;
-
- /// Parse tokens of source code into the chosen syntax tree node.
- ///
- /// This function will check that the input is fully parsed. If there are
- /// any unparsed tokens at the end of the stream, an error is returned.
- ///
-- /// *This method is available if Syn is built with both the `"parsing"` and
-+ /// *This method is available only if Syn is built with both the `"parsing"` and
- /// `"proc-macro"` features.*
- #[cfg(all(
- not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "wasi"))),
- feature = "proc-macro"
- ))]
- fn parse(self, tokens: proc_macro::TokenStream) -> Result<Self::Output> {
- self.parse2(proc_macro2::TokenStream::from(tokens))
- }
-@@ -1083,90 +1150,96 @@ pub trait Parser: Sized {
- /// Every span in the resulting syntax tree will be set to resolve at the
- /// macro call site.
- fn parse_str(self, s: &str) -> Result<Self::Output> {
- self.parse2(proc_macro2::TokenStream::from_str(s)?)
- }
-
- // Not public API.
- #[doc(hidden)]
-+ #[cfg(any(feature = "full", feature = "derive"))]
- fn __parse_scoped(self, scope: Span, tokens: TokenStream) -> Result<Self::Output> {
- let _ = scope;
- self.parse2(tokens)
- }
-
- // Not public API.
- #[doc(hidden)]
-+ #[cfg(any(feature = "full", feature = "derive"))]
- fn __parse_stream(self, input: ParseStream) -> Result<Self::Output> {
- input.parse().and_then(|tokens| self.parse2(tokens))
- }
- }
-
- fn tokens_to_parse_buffer(tokens: &TokenBuffer) -> ParseBuffer {
- let scope = Span::call_site();
- let cursor = tokens.begin();
-- let unexpected = Rc::new(Cell::new(None));
-+ let unexpected = Rc::new(Cell::new(Unexpected::None));
- new_parse_buffer(scope, cursor, unexpected)
- }
-
- impl<F, T> Parser for F
- where
- F: FnOnce(ParseStream) -> Result<T>,
- {
- type Output = T;
-
- fn parse2(self, tokens: TokenStream) -> Result<T> {
- let buf = TokenBuffer::new2(tokens);
- let state = tokens_to_parse_buffer(&buf);
- let node = self(&state)?;
- state.check_unexpected()?;
-- if state.is_empty() {
-+ if let Some(unexpected_span) = span_of_unexpected_ignoring_nones(state.cursor()) {
-+ Err(Error::new(unexpected_span, "unexpected token"))
-+ } else {
- Ok(node)
-- } else {
-- Err(state.error("unexpected token"))
- }
- }
-
- #[doc(hidden)]
-+ #[cfg(any(feature = "full", feature = "derive"))]
- fn __parse_scoped(self, scope: Span, tokens: TokenStream) -> Result<Self::Output> {
- let buf = TokenBuffer::new2(tokens);
- let cursor = buf.begin();
-- let unexpected = Rc::new(Cell::new(None));
-+ let unexpected = Rc::new(Cell::new(Unexpected::None));
- let state = new_parse_buffer(scope, cursor, unexpected);
- let node = self(&state)?;
- state.check_unexpected()?;
-- if state.is_empty() {
-+ if let Some(unexpected_span) = span_of_unexpected_ignoring_nones(state.cursor()) {
-+ Err(Error::new(unexpected_span, "unexpected token"))
-+ } else {
- Ok(node)
-- } else {
-- Err(state.error("unexpected token"))
- }
- }
-
- #[doc(hidden)]
-+ #[cfg(any(feature = "full", feature = "derive"))]
- fn __parse_stream(self, input: ParseStream) -> Result<Self::Output> {
- self(input)
- }
- }
-
-+#[cfg(any(feature = "full", feature = "derive"))]
- pub(crate) fn parse_scoped<F: Parser>(f: F, scope: Span, tokens: TokenStream) -> Result<F::Output> {
- f.__parse_scoped(scope, tokens)
- }
-
-+#[cfg(any(feature = "full", feature = "derive"))]
- pub(crate) fn parse_stream<F: Parser>(f: F, input: ParseStream) -> Result<F::Output> {
- f.__parse_stream(input)
- }
-
- /// An empty syntax tree node that consumes no tokens when parsed.
- ///
- /// This is useful for attribute macros that want to ensure they are not
- /// provided any attribute args.
- ///
- /// ```
--/// extern crate proc_macro;
--///
-+/// # extern crate proc_macro;
-+/// #
- /// use proc_macro::TokenStream;
- /// use syn::parse_macro_input;
- /// use syn::parse::Nothing;
- ///
- /// # const IGNORE: &str = stringify! {
- /// #[proc_macro_attribute]
- /// # };
- /// pub fn my_attr(args: TokenStream, input: TokenStream) -> TokenStream {
-diff --git a/third_party/rust/syn/src/parse_macro_input.rs b/third_party/rust/syn/src/parse_macro_input.rs
---- a/third_party/rust/syn/src/parse_macro_input.rs
-+++ b/third_party/rust/syn/src/parse_macro_input.rs
-@@ -11,18 +11,18 @@
- /// # Intended usage
- ///
- /// This macro must be called from a function that returns
- /// `proc_macro::TokenStream`. Usually this will be your proc macro entry point,
- /// the function that has the #\[proc_macro\] / #\[proc_macro_derive\] /
- /// #\[proc_macro_attribute\] attribute.
- ///
- /// ```
--/// extern crate proc_macro;
--///
-+/// # extern crate proc_macro;
-+/// #
- /// use proc_macro::TokenStream;
- /// use syn::{parse_macro_input, Result};
- /// use syn::parse::{Parse, ParseStream};
- ///
- /// struct MyMacroInput {
- /// /* ... */
- /// }
- ///
-@@ -38,28 +38,52 @@
- /// # };
- /// pub fn my_macro(tokens: TokenStream) -> TokenStream {
- /// let input = parse_macro_input!(tokens as MyMacroInput);
- ///
- /// /* ... */
- /// # "".parse().unwrap()
- /// }
- /// ```
--#[macro_export(local_inner_macros)]
-+///
-+/// <br>
-+///
-+/// # Expansion
-+///
-+/// `parse_macro_input!($variable as $Type)` expands to something like:
-+///
-+/// ```no_run
-+/// # extern crate proc_macro;
-+/// #
-+/// # macro_rules! doc_test {
-+/// # ($variable:ident as $Type:ty) => {
-+/// match syn::parse::<$Type>($variable) {
-+/// Ok(syntax_tree) => syntax_tree,
-+/// Err(err) => return proc_macro::TokenStream::from(err.to_compile_error()),
-+/// }
-+/// # };
-+/// # }
-+/// #
-+/// # fn test(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
-+/// # let _ = doc_test!(input as syn::Ident);
-+/// # proc_macro::TokenStream::new()
-+/// # }
-+/// ```
-+#[macro_export]
- macro_rules! parse_macro_input {
- ($tokenstream:ident as $ty:ty) => {
- match $crate::parse_macro_input::parse::<$ty>($tokenstream) {
- $crate::export::Ok(data) => data,
- $crate::export::Err(err) => {
- return $crate::export::TokenStream::from(err.to_compile_error());
- }
- }
- };
- ($tokenstream:ident) => {
-- parse_macro_input!($tokenstream as _)
-+ $crate::parse_macro_input!($tokenstream as _)
- };
- }
-
- ////////////////////////////////////////////////////////////////////////////////
- // Can parse any type that implements Parse.
-
- use crate::parse::{Parse, ParseStream, Parser, Result};
- use proc_macro::TokenStream;
-diff --git a/third_party/rust/syn/src/parse_quote.rs b/third_party/rust/syn/src/parse_quote.rs
---- a/third_party/rust/syn/src/parse_quote.rs
-+++ b/third_party/rust/syn/src/parse_quote.rs
-@@ -19,17 +19,17 @@
- /// let stmt: Stmt = parse_quote! {
- /// let #name: #ty = Default::default();
- /// };
- ///
- /// println!("{:#?}", stmt);
- /// }
- /// ```
- ///
--/// *This macro is available if Syn is built with the `"parsing"` feature,
-+/// *This macro is available only if Syn is built with the `"parsing"` feature,
- /// although interpolation of syntax tree nodes into the quoted tokens is only
- /// supported if Syn is built with the `"printing"` feature as well.*
- ///
- /// # Example
- ///
- /// The following helper function adds a bound `T: HeapSize` to every type
- /// parameter `T` in the input generics.
- ///
-@@ -51,28 +51,30 @@
- ///
- /// This macro can parse the following additional types as a special case even
- /// though they do not implement the `Parse` trait.
- ///
- /// - [`Attribute`] — parses one attribute, allowing either outer like `#[...]`
- /// or inner like `#![...]`
- /// - [`Punctuated<T, P>`] — parses zero or more `T` separated by punctuation
- /// `P` with optional trailing punctuation
-+/// - [`Vec<Stmt>`] — parses the same as `Block::parse_within`
- ///
- /// [`Punctuated<T, P>`]: punctuated::Punctuated
-+/// [`Vec<Stmt>`]: Block::parse_within
- ///
- /// # Panics
- ///
- /// Panics if the tokens fail to parse as the expected syntax tree type. The
- /// caller is responsible for ensuring that the input tokens are syntactically
- /// valid.
- //
- // TODO: allow Punctuated to be inferred as intra doc link, currently blocked on
- // https://github.com/rust-lang/rust/issues/62834
--#[macro_export(local_inner_macros)]
-+#[macro_export]
- macro_rules! parse_quote {
- ($($tt:tt)*) => {
- $crate::parse_quote::parse(
- $crate::export::From::from(
- $crate::export::quote::quote!($($tt)*)
- )
- )
- };
-@@ -107,16 +109,18 @@ impl<T: Parse> ParseQuote for T {
- }
-
- ////////////////////////////////////////////////////////////////////////////////
- // Any other types that we want `parse_quote!` to be able to parse.
-
- use crate::punctuated::Punctuated;
- #[cfg(any(feature = "full", feature = "derive"))]
- use crate::{attr, Attribute};
-+#[cfg(feature = "full")]
-+use crate::{Block, Stmt};
-
- #[cfg(any(feature = "full", feature = "derive"))]
- impl ParseQuote for Attribute {
- fn parse(input: ParseStream) -> Result<Self> {
- if input.peek(Token![#]) && input.peek2(Token![!]) {
- attr::parsing::single_parse_inner(input)
- } else {
- attr::parsing::single_parse_outer(input)
-@@ -124,8 +128,15 @@ impl ParseQuote for Attribute {
- }
- }
-
- impl<T: Parse, P: Parse> ParseQuote for Punctuated<T, P> {
- fn parse(input: ParseStream) -> Result<Self> {
- Self::parse_terminated(input)
- }
- }
-+
-+#[cfg(feature = "full")]
-+impl ParseQuote for Vec<Stmt> {
-+ fn parse(input: ParseStream) -> Result<Self> {
-+ Block::parse_within(input)
-+ }
-+}
-diff --git a/third_party/rust/syn/src/pat.rs b/third_party/rust/syn/src/pat.rs
---- a/third_party/rust/syn/src/pat.rs
-+++ b/third_party/rust/syn/src/pat.rs
-@@ -1,31 +1,27 @@
- use super::*;
- use crate::punctuated::Punctuated;
--#[cfg(feature = "extra-traits")]
--use crate::tt::TokenStreamHelper;
- use proc_macro2::TokenStream;
--#[cfg(feature = "extra-traits")]
--use std::hash::{Hash, Hasher};
-
- ast_enum_of_structs! {
- /// A pattern in a local binding, function signature, match expression, or
- /// various other places.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
- //
- // TODO: change syntax-tree-enum link to an intra rustdoc link, currently
- // blocked on https://github.com/rust-lang/rust/issues/62833
-- pub enum Pat #manual_extra_traits {
-+ pub enum Pat {
- /// A box pattern: `box v`.
- Box(PatBox),
-
- /// A pattern that binds a new variable: `ref mut binding @ SUBPATTERN`.
- Ident(PatIdent),
-
- /// A literal pattern: `0`.
- ///
-@@ -81,321 +77,219 @@ ast_enum_of_structs! {
- #[doc(hidden)]
- __Nonexhaustive,
- }
- }
-
- ast_struct! {
- /// A box pattern: `box v`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatBox {
- pub attrs: Vec<Attribute>,
- pub box_token: Token![box],
- pub pat: Box<Pat>,
- }
- }
-
- ast_struct! {
- /// A pattern that binds a new variable: `ref mut binding @ SUBPATTERN`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// It may also be a unit struct or struct variant (e.g. `None`), or a
-+ /// constant; these cannot be distinguished syntactically.
-+ ///
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatIdent {
- pub attrs: Vec<Attribute>,
- pub by_ref: Option<Token![ref]>,
- pub mutability: Option<Token![mut]>,
- pub ident: Ident,
- pub subpat: Option<(Token![@], Box<Pat>)>,
- }
- }
-
- ast_struct! {
- /// A literal pattern: `0`.
- ///
- /// This holds an `Expr` rather than a `Lit` because negative numbers
- /// are represented as an `Expr::Unary`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatLit {
- pub attrs: Vec<Attribute>,
- pub expr: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// A macro in pattern position.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatMacro {
- pub attrs: Vec<Attribute>,
- pub mac: Macro,
- }
- }
-
- ast_struct! {
- /// A pattern that matches any one of a set of cases.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatOr {
- pub attrs: Vec<Attribute>,
- pub leading_vert: Option<Token![|]>,
- pub cases: Punctuated<Pat, Token![|]>,
- }
- }
-
- ast_struct! {
- /// A path pattern like `Color::Red`, optionally qualified with a
- /// self-type.
- ///
- /// Unqualified path patterns can legally refer to variants, structs,
- /// constants or associated constants. Qualified path patterns like
- /// `<A>::B::C` and `<A as Trait>::B::C` can only legally refer to
- /// associated constants.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatPath {
- pub attrs: Vec<Attribute>,
- pub qself: Option<QSelf>,
- pub path: Path,
- }
- }
-
- ast_struct! {
- /// A range pattern: `1..=2`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatRange {
- pub attrs: Vec<Attribute>,
- pub lo: Box<Expr>,
- pub limits: RangeLimits,
- pub hi: Box<Expr>,
- }
- }
-
- ast_struct! {
- /// A reference pattern: `&mut var`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatReference {
- pub attrs: Vec<Attribute>,
- pub and_token: Token![&],
- pub mutability: Option<Token![mut]>,
- pub pat: Box<Pat>,
- }
- }
-
- ast_struct! {
- /// The dots in a tuple or slice pattern: `[0, 1, ..]`
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatRest {
- pub attrs: Vec<Attribute>,
- pub dot2_token: Token![..],
- }
- }
-
- ast_struct! {
- /// A dynamically sized slice pattern: `[a, b, ref i @ .., y, z]`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatSlice {
- pub attrs: Vec<Attribute>,
- pub bracket_token: token::Bracket,
- pub elems: Punctuated<Pat, Token![,]>,
- }
- }
-
- ast_struct! {
- /// A struct or struct variant pattern: `Variant { x, y, .. }`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatStruct {
- pub attrs: Vec<Attribute>,
- pub path: Path,
- pub brace_token: token::Brace,
- pub fields: Punctuated<FieldPat, Token![,]>,
- pub dot2_token: Option<Token![..]>,
- }
- }
-
- ast_struct! {
- /// A tuple pattern: `(a, b)`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatTuple {
- pub attrs: Vec<Attribute>,
- pub paren_token: token::Paren,
- pub elems: Punctuated<Pat, Token![,]>,
- }
- }
-
- ast_struct! {
- /// A tuple struct or tuple variant pattern: `Variant(x, y, .., z)`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatTupleStruct {
- pub attrs: Vec<Attribute>,
- pub path: Path,
- pub pat: PatTuple,
- }
- }
-
- ast_struct! {
- /// A type ascription pattern: `foo: f64`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatType {
- pub attrs: Vec<Attribute>,
- pub pat: Box<Pat>,
- pub colon_token: Token![:],
- pub ty: Box<Type>,
- }
- }
-
- ast_struct! {
- /// A pattern that matches any value: `_`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct PatWild {
- pub attrs: Vec<Attribute>,
- pub underscore_token: Token![_],
- }
- }
-
- ast_struct! {
- /// A single field in a struct pattern.
- ///
- /// Patterns like the fields of Foo `{ x, ref y, ref mut z }` are treated
- /// the same as `x: x, y: ref y, z: ref mut z` but there is no colon token.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct FieldPat {
- pub attrs: Vec<Attribute>,
- pub member: Member,
- pub colon_token: Option<Token![:]>,
- pub pat: Box<Pat>,
- }
- }
-
--#[cfg(feature = "extra-traits")]
--impl Eq for Pat {}
--
--#[cfg(feature = "extra-traits")]
--impl PartialEq for Pat {
-- fn eq(&self, other: &Self) -> bool {
-- match (self, other) {
-- (Pat::Box(this), Pat::Box(other)) => this == other,
-- (Pat::Ident(this), Pat::Ident(other)) => this == other,
-- (Pat::Lit(this), Pat::Lit(other)) => this == other,
-- (Pat::Macro(this), Pat::Macro(other)) => this == other,
-- (Pat::Or(this), Pat::Or(other)) => this == other,
-- (Pat::Path(this), Pat::Path(other)) => this == other,
-- (Pat::Range(this), Pat::Range(other)) => this == other,
-- (Pat::Reference(this), Pat::Reference(other)) => this == other,
-- (Pat::Rest(this), Pat::Rest(other)) => this == other,
-- (Pat::Slice(this), Pat::Slice(other)) => this == other,
-- (Pat::Struct(this), Pat::Struct(other)) => this == other,
-- (Pat::Tuple(this), Pat::Tuple(other)) => this == other,
-- (Pat::TupleStruct(this), Pat::TupleStruct(other)) => this == other,
-- (Pat::Type(this), Pat::Type(other)) => this == other,
-- (Pat::Verbatim(this), Pat::Verbatim(other)) => {
-- TokenStreamHelper(this) == TokenStreamHelper(other)
-- }
-- (Pat::Wild(this), Pat::Wild(other)) => this == other,
-- _ => false,
-- }
-- }
--}
--
--#[cfg(feature = "extra-traits")]
--impl Hash for Pat {
-- fn hash<H>(&self, hash: &mut H)
-- where
-- H: Hasher,
-- {
-- match self {
-- Pat::Box(pat) => {
-- hash.write_u8(0);
-- pat.hash(hash);
-- }
-- Pat::Ident(pat) => {
-- hash.write_u8(1);
-- pat.hash(hash);
-- }
-- Pat::Lit(pat) => {
-- hash.write_u8(2);
-- pat.hash(hash);
-- }
-- Pat::Macro(pat) => {
-- hash.write_u8(3);
-- pat.hash(hash);
-- }
-- Pat::Or(pat) => {
-- hash.write_u8(4);
-- pat.hash(hash);
-- }
-- Pat::Path(pat) => {
-- hash.write_u8(5);
-- pat.hash(hash);
-- }
-- Pat::Range(pat) => {
-- hash.write_u8(6);
-- pat.hash(hash);
-- }
-- Pat::Reference(pat) => {
-- hash.write_u8(7);
-- pat.hash(hash);
-- }
-- Pat::Rest(pat) => {
-- hash.write_u8(8);
-- pat.hash(hash);
-- }
-- Pat::Slice(pat) => {
-- hash.write_u8(9);
-- pat.hash(hash);
-- }
-- Pat::Struct(pat) => {
-- hash.write_u8(10);
-- pat.hash(hash);
-- }
-- Pat::Tuple(pat) => {
-- hash.write_u8(11);
-- pat.hash(hash);
-- }
-- Pat::TupleStruct(pat) => {
-- hash.write_u8(12);
-- pat.hash(hash);
-- }
-- Pat::Type(pat) => {
-- hash.write_u8(13);
-- pat.hash(hash);
-- }
-- Pat::Verbatim(pat) => {
-- hash.write_u8(14);
-- TokenStreamHelper(pat).hash(hash);
-- }
-- Pat::Wild(pat) => {
-- hash.write_u8(15);
-- pat.hash(hash);
-- }
-- Pat::__Nonexhaustive => unreachable!(),
-- }
-- }
--}
--
- #[cfg(feature = "parsing")]
--mod parsing {
-+pub mod parsing {
- use super::*;
-
- use crate::ext::IdentExt;
-- use crate::parse::{Parse, ParseStream, Result};
-+ use crate::parse::{Parse, ParseBuffer, ParseStream, Result};
- use crate::path;
-
- impl Parse for Pat {
- fn parse(input: ParseStream) -> Result<Self> {
-+ let begin = input.fork();
- let lookahead = input.lookahead1();
- if lookahead.peek(Ident)
- && ({
- input.peek2(Token![::])
- || input.peek2(Token![!])
- || input.peek2(token::Brace)
- || input.peek2(token::Paren)
- || input.peek2(Token![..])
-@@ -406,17 +300,16 @@ mod parsing {
- ahead.is_empty() || ahead.peek(Token![,])
- }
- })
- || input.peek(Token![self]) && input.peek2(Token![::])
- || lookahead.peek(Token![::])
- || lookahead.peek(Token![<])
- || input.peek(Token![Self])
- || input.peek(Token![super])
-- || input.peek(Token![extern])
- || input.peek(Token![crate])
- {
- pat_path_or_macro_or_struct_or_range(input)
- } else if lookahead.peek(Token![_]) {
- input.call(pat_wild).map(Pat::Wild)
- } else if input.peek(Token![box]) {
- input.call(pat_box).map(Pat::Box)
- } else if input.peek(Token![-]) || lookahead.peek(Lit) {
-@@ -429,28 +322,29 @@ mod parsing {
- input.call(pat_ident).map(Pat::Ident)
- } else if lookahead.peek(Token![&]) {
- input.call(pat_reference).map(Pat::Reference)
- } else if lookahead.peek(token::Paren) {
- input.call(pat_tuple).map(Pat::Tuple)
- } else if lookahead.peek(token::Bracket) {
- input.call(pat_slice).map(Pat::Slice)
- } else if lookahead.peek(Token![..]) && !input.peek(Token![...]) {
-- input.call(pat_rest).map(Pat::Rest)
-+ pat_range_half_open(input, begin)
- } else {
- Err(lookahead.error())
- }
- }
- }
-
- fn pat_path_or_macro_or_struct_or_range(input: ParseStream) -> Result<Pat> {
-+ let begin = input.fork();
- let (qself, path) = path::parsing::qpath(input, true)?;
-
- if input.peek(Token![..]) {
-- return pat_range(input, qself, path).map(Pat::Range);
-+ return pat_range(input, begin, qself, path);
- }
-
- if qself.is_some() {
- return Ok(Pat::Path(PatPath {
- attrs: Vec::new(),
- qself,
- path,
- }));
-@@ -482,17 +376,17 @@ mod parsing {
- }
- }
-
- if input.peek(token::Brace) {
- pat_struct(input, path).map(Pat::Struct)
- } else if input.peek(token::Paren) {
- pat_tuple_struct(input, path).map(Pat::TupleStruct)
- } else if input.peek(Token![..]) {
-- pat_range(input, qself, path).map(Pat::Range)
-+ pat_range(input, begin, qself, path)
- } else {
- Ok(Pat::Path(PatPath {
- attrs: Vec::new(),
- qself,
- path,
- }))
- }
- }
-@@ -541,17 +435,17 @@ mod parsing {
- fn pat_struct(input: ParseStream, path: Path) -> Result<PatStruct> {
- let content;
- let brace_token = braced!(content in input);
-
- let mut fields = Punctuated::new();
- while !content.is_empty() && !content.peek(Token![..]) {
- let value = content.call(field_pat)?;
- fields.push_value(value);
-- if !content.peek(Token![,]) {
-+ if content.is_empty() {
- break;
- }
- let punct: Token![,] = content.parse()?;
- fields.push_punct(punct);
- }
-
- let dot2_token = if fields.empty_or_trailing() && content.peek(Token![..]) {
- Some(content.parse()?)
-@@ -573,29 +467,30 @@ mod parsing {
- match *self {
- Member::Named(_) => false,
- Member::Unnamed(_) => true,
- }
- }
- }
-
- fn field_pat(input: ParseStream) -> Result<FieldPat> {
-+ let attrs = input.call(Attribute::parse_outer)?;
- let boxed: Option<Token![box]> = input.parse()?;
- let by_ref: Option<Token![ref]> = input.parse()?;
- let mutability: Option<Token![mut]> = input.parse()?;
- let member: Member = input.parse()?;
-
- if boxed.is_none() && by_ref.is_none() && mutability.is_none() && input.peek(Token![:])
- || member.is_unnamed()
- {
- return Ok(FieldPat {
-- attrs: Vec::new(),
-+ attrs,
- member,
- colon_token: input.parse()?,
-- pat: input.parse()?,
-+ pat: Box::new(multi_pat(input)?),
- });
- }
-
- let ident = match member {
- Member::Named(ident) => ident,
- Member::Unnamed(_) => unreachable!(),
- };
-
-@@ -605,49 +500,76 @@ mod parsing {
- mutability,
- ident: ident.clone(),
- subpat: None,
- });
-
- if let Some(boxed) = boxed {
- pat = Pat::Box(PatBox {
- attrs: Vec::new(),
-+ box_token: boxed,
- pat: Box::new(pat),
-- box_token: boxed,
- });
- }
-
- Ok(FieldPat {
-+ attrs,
- member: Member::Named(ident),
-+ colon_token: None,
- pat: Box::new(pat),
-- attrs: Vec::new(),
-- colon_token: None,
- })
- }
-
-- fn pat_range(input: ParseStream, qself: Option<QSelf>, path: Path) -> Result<PatRange> {
-- Ok(PatRange {
-- attrs: Vec::new(),
-- lo: Box::new(Expr::Path(ExprPath {
-+ fn pat_range(
-+ input: ParseStream,
-+ begin: ParseBuffer,
-+ qself: Option<QSelf>,
-+ path: Path,
-+ ) -> Result<Pat> {
-+ let limits: RangeLimits = input.parse()?;
-+ let hi = input.call(pat_lit_expr)?;
-+ if let Some(hi) = hi {
-+ Ok(Pat::Range(PatRange {
- attrs: Vec::new(),
-- qself,
-- path,
-- })),
-- limits: input.parse()?,
-- hi: input.call(pat_lit_expr)?,
-- })
-+ lo: Box::new(Expr::Path(ExprPath {
-+ attrs: Vec::new(),
-+ qself,
-+ path,
-+ })),
-+ limits,
-+ hi,
-+ }))
-+ } else {
-+ Ok(Pat::Verbatim(verbatim::between(begin, input)))
-+ }
-+ }
-+
-+ fn pat_range_half_open(input: ParseStream, begin: ParseBuffer) -> Result<Pat> {
-+ let limits: RangeLimits = input.parse()?;
-+ let hi = input.call(pat_lit_expr)?;
-+ if hi.is_some() {
-+ Ok(Pat::Verbatim(verbatim::between(begin, input)))
-+ } else {
-+ match limits {
-+ RangeLimits::HalfOpen(dot2_token) => Ok(Pat::Rest(PatRest {
-+ attrs: Vec::new(),
-+ dot2_token,
-+ })),
-+ RangeLimits::Closed(_) => Err(input.error("expected range upper bound")),
-+ }
-+ }
- }
-
- fn pat_tuple(input: ParseStream) -> Result<PatTuple> {
- let content;
- let paren_token = parenthesized!(content in input);
-
- let mut elems = Punctuated::new();
- while !content.is_empty() {
-- let value: Pat = content.parse()?;
-+ let value = multi_pat(&content)?;
- elems.push_value(value);
- if content.is_empty() {
- break;
- }
- let punct = content.parse()?;
- elems.push_punct(punct);
- }
-
-@@ -663,225 +585,280 @@ mod parsing {
- attrs: Vec::new(),
- and_token: input.parse()?,
- mutability: input.parse()?,
- pat: input.parse()?,
- })
- }
-
- fn pat_lit_or_range(input: ParseStream) -> Result<Pat> {
-- let lo = input.call(pat_lit_expr)?;
-+ let begin = input.fork();
-+ let lo = input.call(pat_lit_expr)?.unwrap();
- if input.peek(Token![..]) {
-- Ok(Pat::Range(PatRange {
-- attrs: Vec::new(),
-- lo,
-- limits: input.parse()?,
-- hi: input.call(pat_lit_expr)?,
-- }))
-+ let limits: RangeLimits = input.parse()?;
-+ let hi = input.call(pat_lit_expr)?;
-+ if let Some(hi) = hi {
-+ Ok(Pat::Range(PatRange {
-+ attrs: Vec::new(),
-+ lo,
-+ limits,
-+ hi,
-+ }))
-+ } else {
-+ Ok(Pat::Verbatim(verbatim::between(begin, input)))
-+ }
- } else {
- Ok(Pat::Lit(PatLit {
- attrs: Vec::new(),
- expr: lo,
- }))
- }
- }
-
-- fn pat_lit_expr(input: ParseStream) -> Result<Box<Expr>> {
-+ fn pat_lit_expr(input: ParseStream) -> Result<Option<Box<Expr>>> {
-+ if input.is_empty()
-+ || input.peek(Token![|])
-+ || input.peek(Token![=>])
-+ || input.peek(Token![:]) && !input.peek(Token![::])
-+ || input.peek(Token![,])
-+ || input.peek(Token![;])
-+ {
-+ return Ok(None);
-+ }
-+
- let neg: Option<Token![-]> = input.parse()?;
-
- let lookahead = input.lookahead1();
- let expr = if lookahead.peek(Lit) {
- Expr::Lit(input.parse()?)
- } else if lookahead.peek(Ident)
- || lookahead.peek(Token![::])
- || lookahead.peek(Token![<])
- || lookahead.peek(Token![self])
- || lookahead.peek(Token![Self])
- || lookahead.peek(Token![super])
-- || lookahead.peek(Token![extern])
- || lookahead.peek(Token![crate])
- {
- Expr::Path(input.parse()?)
- } else {
- return Err(lookahead.error());
- };
-
-- Ok(Box::new(if let Some(neg) = neg {
-+ Ok(Some(Box::new(if let Some(neg) = neg {
- Expr::Unary(ExprUnary {
- attrs: Vec::new(),
- op: UnOp::Neg(neg),
- expr: Box::new(expr),
- })
- } else {
- expr
-- }))
-+ })))
- }
-
- fn pat_slice(input: ParseStream) -> Result<PatSlice> {
- let content;
- let bracket_token = bracketed!(content in input);
-
- let mut elems = Punctuated::new();
- while !content.is_empty() {
-- let value: Pat = content.parse()?;
-+ let value = multi_pat(&content)?;
- elems.push_value(value);
- if content.is_empty() {
- break;
- }
- let punct = content.parse()?;
- elems.push_punct(punct);
- }
-
- Ok(PatSlice {
- attrs: Vec::new(),
- bracket_token,
- elems,
- })
- }
-
-- fn pat_rest(input: ParseStream) -> Result<PatRest> {
-- Ok(PatRest {
-- attrs: Vec::new(),
-- dot2_token: input.parse()?,
-- })
-+ pub fn multi_pat(input: ParseStream) -> Result<Pat> {
-+ multi_pat_impl(input, None)
-+ }
-+
-+ pub fn multi_pat_with_leading_vert(input: ParseStream) -> Result<Pat> {
-+ let leading_vert: Option<Token![|]> = input.parse()?;
-+ multi_pat_impl(input, leading_vert)
-+ }
-+
-+ fn multi_pat_impl(input: ParseStream, leading_vert: Option<Token![|]>) -> Result<Pat> {
-+ let mut pat: Pat = input.parse()?;
-+ if leading_vert.is_some()
-+ || input.peek(Token![|]) && !input.peek(Token![||]) && !input.peek(Token![|=])
-+ {
-+ let mut cases = Punctuated::new();
-+ cases.push_value(pat);
-+ while input.peek(Token![|]) && !input.peek(Token![||]) && !input.peek(Token![|=]) {
-+ let punct = input.parse()?;
-+ cases.push_punct(punct);
-+ let pat: Pat = input.parse()?;
-+ cases.push_value(pat);
-+ }
-+ pat = Pat::Or(PatOr {
-+ attrs: Vec::new(),
-+ leading_vert,
-+ cases,
-+ });
-+ }
-+ Ok(pat)
- }
- }
-
- #[cfg(feature = "printing")]
- mod printing {
- use super::*;
-
- use proc_macro2::TokenStream;
- use quote::{ToTokens, TokenStreamExt};
-
- use crate::attr::FilterAttrs;
-
- impl ToTokens for PatWild {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.underscore_token.to_tokens(tokens);
- }
- }
-
- impl ToTokens for PatIdent {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.by_ref.to_tokens(tokens);
- self.mutability.to_tokens(tokens);
- self.ident.to_tokens(tokens);
- if let Some((at_token, subpat)) = &self.subpat {
- at_token.to_tokens(tokens);
- subpat.to_tokens(tokens);
- }
- }
- }
-
- impl ToTokens for PatStruct {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.path.to_tokens(tokens);
- self.brace_token.surround(tokens, |tokens| {
- self.fields.to_tokens(tokens);
- // NOTE: We need a comma before the dot2 token if it is present.
- if !self.fields.empty_or_trailing() && self.dot2_token.is_some() {
- <Token![,]>::default().to_tokens(tokens);
- }
- self.dot2_token.to_tokens(tokens);
- });
- }
- }
-
- impl ToTokens for PatTupleStruct {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.path.to_tokens(tokens);
- self.pat.to_tokens(tokens);
- }
- }
-
- impl ToTokens for PatType {
- fn to_tokens(&self, tokens: &mut TokenStream) {
- tokens.append_all(self.attrs.outer());
- self.pat.to_tokens(tokens);
- self.colon_token.to_tokens(tokens);
- self.ty.to_tokens(tokens);
- }
- }
-
- impl ToTokens for PatPath {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- private::print_path(tokens, &self.qself, &self.path);
- }
- }
-
- impl ToTokens for PatTuple {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.paren_token.surround(tokens, |tokens| {
- self.elems.to_tokens(tokens);
- });
- }
- }
-
- impl ToTokens for PatBox {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.box_token.to_tokens(tokens);
- self.pat.to_tokens(tokens);
- }
- }
-
- impl ToTokens for PatReference {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.and_token.to_tokens(tokens);
- self.mutability.to_tokens(tokens);
- self.pat.to_tokens(tokens);
- }
- }
-
- impl ToTokens for PatRest {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.dot2_token.to_tokens(tokens);
- }
- }
-
- impl ToTokens for PatLit {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.expr.to_tokens(tokens);
- }
- }
-
- impl ToTokens for PatRange {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.lo.to_tokens(tokens);
- match &self.limits {
- RangeLimits::HalfOpen(t) => t.to_tokens(tokens),
- RangeLimits::Closed(t) => t.to_tokens(tokens),
- }
- self.hi.to_tokens(tokens);
- }
- }
-
- impl ToTokens for PatSlice {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.bracket_token.surround(tokens, |tokens| {
- self.elems.to_tokens(tokens);
- });
- }
- }
-
- impl ToTokens for PatMacro {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.mac.to_tokens(tokens);
- }
- }
-
- impl ToTokens for PatOr {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- self.leading_vert.to_tokens(tokens);
- self.cases.to_tokens(tokens);
- }
- }
-
- impl ToTokens for FieldPat {
- fn to_tokens(&self, tokens: &mut TokenStream) {
-+ tokens.append_all(self.attrs.outer());
- if let Some(colon_token) = &self.colon_token {
- self.member.to_tokens(tokens);
- colon_token.to_tokens(tokens);
- }
- self.pat.to_tokens(tokens);
- }
- }
- }
-diff --git a/third_party/rust/syn/src/path.rs b/third_party/rust/syn/src/path.rs
---- a/third_party/rust/syn/src/path.rs
-+++ b/third_party/rust/syn/src/path.rs
-@@ -1,15 +1,15 @@
- use super::*;
- use crate::punctuated::Punctuated;
-
- ast_struct! {
-- /// A path at which a named item is exported: `std::collections::HashMap`.
-+ /// A path at which a named item is exported (e.g. `std::collections::HashMap`).
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct Path {
- pub leading_colon: Option<Token![::]>,
- pub segments: Punctuated<PathSegment, Token![::]>,
- }
- }
-
- impl<T> From<T> for Path
-@@ -24,17 +24,17 @@ where
- path.segments.push_value(segment.into());
- path
- }
- }
-
- ast_struct! {
- /// A segment of a path together with any path arguments on that segment.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct PathSegment {
- pub ident: Ident,
- pub arguments: PathArguments,
- }
- }
-
- impl<T> From<T> for PathSegment
-@@ -47,17 +47,17 @@ where
- arguments: PathArguments::None,
- }
- }
- }
-
- ast_enum! {
- /// Angle bracketed or parenthesized arguments of a path segment.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- ///
- /// ## Angle bracketed
- ///
- /// The `<'a, T>` in `std::slice::iter<'a, T>`.
- ///
- /// ## Parenthesized
- ///
-@@ -93,17 +93,17 @@ impl PathArguments {
- PathArguments::AngleBracketed(_) | PathArguments::Parenthesized(_) => false,
- }
- }
- }
-
- ast_enum! {
- /// An individual generic argument, like `'a`, `T`, or `Item = T`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub enum GenericArgument {
- /// A lifetime argument.
- Lifetime(Lifetime),
- /// A type argument.
- Type(Type),
- /// A binding (equality constraint) on an associated type: the `Item =
- /// u8` in `Iterator<Item = u8>`.
-@@ -117,55 +117,55 @@ ast_enum! {
- Const(Expr),
- }
- }
-
- ast_struct! {
- /// Angle bracketed arguments of a path segment: the `<K, V>` in `HashMap<K,
- /// V>`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct AngleBracketedGenericArguments {
- pub colon2_token: Option<Token![::]>,
- pub lt_token: Token![<],
- pub args: Punctuated<GenericArgument, Token![,]>,
- pub gt_token: Token![>],
- }
- }
-
- ast_struct! {
- /// A binding (equality constraint) on an associated type: `Item = u8`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct Binding {
- pub ident: Ident,
- pub eq_token: Token![=],
- pub ty: Type,
- }
- }
-
- ast_struct! {
- /// An associated type bound: `Iterator<Item: Display>`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct Constraint {
- pub ident: Ident,
- pub colon_token: Token![:],
- pub bounds: Punctuated<TypeParamBound, Token![+]>,
- }
- }
-
- ast_struct! {
- /// Arguments of a function path segment: the `(A, B) -> C` in `Fn(A,B) ->
- /// C`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct ParenthesizedGenericArguments {
- pub paren_token: token::Paren,
- /// `(A, B)`
- pub inputs: Punctuated<Type, Token![,]>,
- /// `C`
- pub output: ReturnType,
- }
-@@ -184,17 +184,17 @@ ast_struct! {
- /// ^~~~~~ ~~~~~~~~~~~~~~^
- /// ty position = 3
- ///
- /// <Vec<T>>::AssociatedItem
- /// ^~~~~~ ^
- /// ty position = 0
- /// ```
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct QSelf {
- pub lt_token: Token![<],
- pub ty: Box<Type>,
- pub position: usize,
- pub as_token: Option<Token![as]>,
- pub gt_token: Token![>],
- }
-@@ -286,21 +286,17 @@ pub mod parsing {
- impl Parse for PathSegment {
- fn parse(input: ParseStream) -> Result<Self> {
- Self::parse_helper(input, false)
- }
- }
-
- impl PathSegment {
- fn parse_helper(input: ParseStream, expr_style: bool) -> Result<Self> {
-- if input.peek(Token![super])
-- || input.peek(Token![self])
-- || input.peek(Token![crate])
-- || input.peek(Token![extern])
-- {
-+ if input.peek(Token![super]) || input.peek(Token![self]) || input.peek(Token![crate]) {
- let ident = input.call(Ident::parse_any)?;
- return Ok(PathSegment::from(ident));
- }
-
- let ident = if input.peek(Token![Self]) {
- input.call(Ident::parse_any)?
- } else {
- input.parse()?
-@@ -353,17 +349,17 @@ pub mod parsing {
- },
- })
- }
- }
-
- impl Path {
- /// Parse a `Path` containing no path arguments on any of its segments.
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- ///
- /// # Example
- ///
- /// ```
- /// use syn::{Path, Result, Token};
- /// use syn::parse::{Parse, ParseStream};
- ///
-@@ -395,17 +391,16 @@ pub mod parsing {
- segments: {
- let mut segments = Punctuated::new();
- loop {
- if !input.peek(Ident)
- && !input.peek(Token![super])
- && !input.peek(Token![self])
- && !input.peek(Token![Self])
- && !input.peek(Token![crate])
-- && !input.peek(Token![extern])
- {
- break;
- }
- let ident = Ident::parse_any(input)?;
- segments.push_value(PathSegment::from(ident));
- if !input.peek(Token![::]) {
- break;
- }
-@@ -428,17 +423,17 @@ pub mod parsing {
- /// For them to compare equal, it must be the case that:
- ///
- /// - the path has no leading colon,
- /// - the number of path segments is 1,
- /// - the first path segment has no angle bracketed or parenthesized
- /// path arguments, and
- /// - the ident of the first path segment is equal to the given one.
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- ///
- /// # Example
- ///
- /// ```
- /// use syn::{Attribute, Error, Meta, NestedMeta, Result};
- /// # use std::iter::FromIterator;
- ///
-@@ -467,17 +462,17 @@ pub mod parsing {
- ///
- /// A path is considered an ident if:
- ///
- /// - the path has no leading colon,
- /// - the number of path segments is 1, and
- /// - the first path segment has no angle bracketed or parenthesized
- /// path arguments.
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- pub fn get_ident(&self) -> Option<&Ident> {
- if self.leading_colon.is_none()
- && self.segments.len() == 1
- && self.segments[0].arguments.is_none()
- {
- Some(&self.segments[0].ident)
- } else {
-diff --git a/third_party/rust/syn/src/punctuated.rs b/third_party/rust/syn/src/punctuated.rs
---- a/third_party/rust/syn/src/punctuated.rs
-+++ b/third_party/rust/syn/src/punctuated.rs
-@@ -17,16 +17,18 @@
- //!
- //! ```text
- //! a_function_call(arg1, arg2, arg3);
- //! ~~~~^ ~~~~^ ~~~~
- //! ```
-
- #[cfg(feature = "extra-traits")]
- use std::fmt::{self, Debug};
-+#[cfg(feature = "extra-traits")]
-+use std::hash::{Hash, Hasher};
- #[cfg(any(feature = "full", feature = "derive"))]
- use std::iter;
- use std::iter::FromIterator;
- use std::ops::{Index, IndexMut};
- use std::option;
- use std::slice;
- use std::vec;
-
-@@ -36,18 +38,16 @@ use crate::parse::{Parse, ParseStream, R
- use crate::token::Token;
-
- /// A punctuated sequence of syntax tree nodes of type `T` separated by
- /// punctuation of type `P`.
- ///
- /// Refer to the [module documentation] for details about punctuated sequences.
- ///
- /// [module documentation]: self
--#[cfg_attr(feature = "extra-traits", derive(Eq, PartialEq, Hash))]
--#[cfg_attr(feature = "clone-impls", derive(Clone))]
- pub struct Punctuated<T, P> {
- inner: Vec<(T, P)>,
- last: Option<Box<T>>,
- }
-
- impl<T, P> Punctuated<T, P> {
- /// Creates an empty punctuated sequence.
- pub fn new() -> Punctuated<T, P> {
-@@ -71,32 +71,29 @@ impl<T, P> Punctuated<T, P> {
- self.inner.len() + if self.last.is_some() { 1 } else { 0 }
- }
-
- /// Borrows the first element in this sequence.
- pub fn first(&self) -> Option<&T> {
- self.iter().next()
- }
-
-+ /// Mutably borrows the first element in this sequence.
-+ pub fn first_mut(&mut self) -> Option<&mut T> {
-+ self.iter_mut().next()
-+ }
-+
- /// Borrows the last element in this sequence.
- pub fn last(&self) -> Option<&T> {
-- if self.last.is_some() {
-- self.last.as_ref().map(Box::as_ref)
-- } else {
-- self.inner.last().map(|pair| &pair.0)
-- }
-+ self.iter().next_back()
- }
-
- /// Mutably borrows the last element in this sequence.
- pub fn last_mut(&mut self) -> Option<&mut T> {
-- if self.last.is_some() {
-- self.last.as_mut().map(Box::as_mut)
-- } else {
-- self.inner.last_mut().map(|pair| &mut pair.0)
-- }
-+ self.iter_mut().next_back()
- }
-
- /// Returns an iterator over borrowed syntax tree nodes of type `&T`.
- pub fn iter(&self) -> Iter<T> {
- Iter {
- inner: Box::new(PrivateIter {
- inner: self.inner.iter(),
- last: self.last.as_ref().map(Box::as_ref).into_iter(),
-@@ -225,23 +222,29 @@ impl<T, P> Punctuated<T, P> {
-
- if index == self.len() {
- self.push(value);
- } else {
- self.inner.insert(index, (value, Default::default()));
- }
- }
-
-+ /// Clears the sequence of all values and punctuation, making it empty.
-+ pub fn clear(&mut self) {
-+ self.inner.clear();
-+ self.last = None;
-+ }
-+
- /// Parses zero or more occurrences of `T` separated by punctuation of type
- /// `P`, with optional trailing punctuation.
- ///
- /// Parsing continues until the end of this parse stream. The entire content
- /// of this parse stream must consist of `T` and `P`.
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- #[cfg(feature = "parsing")]
- pub fn parse_terminated(input: ParseStream) -> Result<Self>
- where
- T: Parse,
- P: Parse,
- {
- Self::parse_terminated_with(input, T::parse)
-@@ -251,17 +254,17 @@ impl<T, P> Punctuated<T, P> {
- /// separated by punctuation of type `P`, with optional trailing
- /// punctuation.
- ///
- /// Like [`parse_terminated`], the entire content of this stream is expected
- /// to be parsed.
- ///
- /// [`parse_terminated`]: Punctuated::parse_terminated
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- #[cfg(feature = "parsing")]
- pub fn parse_terminated_with(
- input: ParseStream,
- parser: fn(ParseStream) -> Result<T>,
- ) -> Result<Self>
- where
- P: Parse,
-@@ -287,17 +290,17 @@ impl<T, P> Punctuated<T, P> {
- /// Parses one or more occurrences of `T` separated by punctuation of type
- /// `P`, not accepting trailing punctuation.
- ///
- /// Parsing continues as long as punctuation `P` is present at the head of
- /// the stream. This method returns upon parsing a `T` and observing that it
- /// is not followed by a `P`, even if there are remaining tokens in the
- /// stream.
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- #[cfg(feature = "parsing")]
- pub fn parse_separated_nonempty(input: ParseStream) -> Result<Self>
- where
- T: Parse,
- P: Token + Parse,
- {
- Self::parse_separated_nonempty_with(input, T::parse)
-@@ -307,17 +310,17 @@ impl<T, P> Punctuated<T, P> {
- /// separated by punctuation of type `P`, not accepting trailing
- /// punctuation.
- ///
- /// Like [`parse_separated_nonempty`], may complete early without parsing
- /// the entire content of this stream.
- ///
- /// [`parse_separated_nonempty`]: Punctuated::parse_separated_nonempty
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- #[cfg(feature = "parsing")]
- pub fn parse_separated_nonempty_with(
- input: ParseStream,
- parser: fn(ParseStream) -> Result<T>,
- ) -> Result<Self>
- where
- P: Token + Parse,
-@@ -333,16 +336,63 @@ impl<T, P> Punctuated<T, P> {
- let punct = input.parse()?;
- punctuated.push_punct(punct);
- }
-
- Ok(punctuated)
- }
- }
-
-+#[cfg(feature = "clone-impls")]
-+impl<T, P> Clone for Punctuated<T, P>
-+where
-+ T: Clone,
-+ P: Clone,
-+{
-+ fn clone(&self) -> Self {
-+ Punctuated {
-+ inner: self.inner.clone(),
-+ last: self.last.clone(),
-+ }
-+ }
-+}
-+
-+#[cfg(feature = "extra-traits")]
-+impl<T, P> Eq for Punctuated<T, P>
-+where
-+ T: Eq,
-+ P: Eq,
-+{
-+}
-+
-+#[cfg(feature = "extra-traits")]
-+impl<T, P> PartialEq for Punctuated<T, P>
-+where
-+ T: PartialEq,
-+ P: PartialEq,
-+{
-+ fn eq(&self, other: &Self) -> bool {
-+ let Punctuated { inner, last } = self;
-+ *inner == other.inner && *last == other.last
-+ }
-+}
-+
-+#[cfg(feature = "extra-traits")]
-+impl<T, P> Hash for Punctuated<T, P>
-+where
-+ T: Hash,
-+ P: Hash,
-+{
-+ fn hash<H: Hasher>(&self, state: &mut H) {
-+ let Punctuated { inner, last } = self;
-+ inner.hash(state);
-+ last.hash(state);
-+ }
-+}
-+
- #[cfg(feature = "extra-traits")]
- impl<T: Debug, P: Debug> Debug for Punctuated<T, P> {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- let mut list = f.debug_list();
- for (t, p) in &self.inner {
- list.entry(t);
- list.entry(p);
- }
-@@ -531,17 +581,16 @@ impl<'a, T, P> ExactSizeIterator for Pai
- }
- }
-
- /// An iterator over owned pairs of type `Pair<T, P>`.
- ///
- /// Refer to the [module documentation] for details about punctuated sequences.
- ///
- /// [module documentation]: self
--#[derive(Clone)]
- pub struct IntoPairs<T, P> {
- inner: vec::IntoIter<(T, P)>,
- last: option::IntoIter<T>,
- }
-
- impl<T, P> Iterator for IntoPairs<T, P> {
- type Item = Pair<T, P>;
-
-@@ -567,22 +616,34 @@ impl<T, P> DoubleEndedIterator for IntoP
- }
-
- impl<T, P> ExactSizeIterator for IntoPairs<T, P> {
- fn len(&self) -> usize {
- self.inner.len() + self.last.len()
- }
- }
-
-+impl<T, P> Clone for IntoPairs<T, P>
-+where
-+ T: Clone,
-+ P: Clone,
-+{
-+ fn clone(&self) -> Self {
-+ IntoPairs {
-+ inner: self.inner.clone(),
-+ last: self.last.clone(),
-+ }
-+ }
-+}
-+
- /// An iterator over owned values of type `T`.
- ///
- /// Refer to the [module documentation] for details about punctuated sequences.
- ///
- /// [module documentation]: self
--#[derive(Clone)]
- pub struct IntoIter<T> {
- inner: vec::IntoIter<T>,
- }
-
- impl<T> Iterator for IntoIter<T> {
- type Item = T;
-
- fn next(&mut self) -> Option<Self::Item> {
-@@ -601,16 +662,27 @@ impl<T> DoubleEndedIterator for IntoIter
- }
-
- impl<T> ExactSizeIterator for IntoIter<T> {
- fn len(&self) -> usize {
- self.inner.len()
- }
- }
-
-+impl<T> Clone for IntoIter<T>
-+where
-+ T: Clone,
-+{
-+ fn clone(&self) -> Self {
-+ IntoIter {
-+ inner: self.inner.clone(),
-+ }
-+ }
-+}
-+
- /// An iterator over borrowed values of type `&T`.
- ///
- /// Refer to the [module documentation] for details about punctuated sequences.
- ///
- /// [module documentation]: self
- pub struct Iter<'a, T: 'a> {
- // The `Item = &'a T` needs to be specified to support rustc 1.31 and older.
- // On modern compilers we would be able to write just IterTrait<'a, T> where
-@@ -794,17 +866,16 @@ impl<'a, T: 'a, I: 'a> IterMutTrait<'a,
- }
-
- /// A single syntax tree node of type `T` followed by its trailing punctuation
- /// of type `P` if any.
- ///
- /// Refer to the [module documentation] for details about punctuated sequences.
- ///
- /// [module documentation]: self
--#[cfg_attr(feature = "clone-impls", derive(Clone))]
- pub enum Pair<T, P> {
- Punctuated(T, P),
- End(T),
- }
-
- impl<T, P> Pair<T, P> {
- /// Extracts the syntax tree node from this punctuated pair, discarding the
- /// following punctuation.
-@@ -851,16 +922,30 @@ impl<T, P> Pair<T, P> {
- pub fn into_tuple(self) -> (T, Option<P>) {
- match self {
- Pair::Punctuated(t, d) => (t, Some(d)),
- Pair::End(t) => (t, None),
- }
- }
- }
-
-+#[cfg(feature = "clone-impls")]
-+impl<T, P> Clone for Pair<T, P>
-+where
-+ T: Clone,
-+ P: Clone,
-+{
-+ fn clone(&self) -> Self {
-+ match self {
-+ Pair::Punctuated(t, p) => Pair::Punctuated(t.clone(), p.clone()),
-+ Pair::End(t) => Pair::End(t.clone()),
-+ }
-+ }
-+}
-+
- impl<T, P> Index<usize> for Punctuated<T, P> {
- type Output = T;
-
- fn index(&self, index: usize) -> &Self::Output {
- if index == self.len() - 1 {
- match &self.last {
- Some(t) => t,
- None => &self.inner[index].0,
-diff --git a/third_party/rust/syn/src/reserved.rs b/third_party/rust/syn/src/reserved.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/src/reserved.rs
-@@ -0,0 +1,42 @@
-+// Type for a syntax tree node that is reserved for future use.
-+//
-+// For example ExprReference contains a field `raw` of type Reserved. If `&raw
-+// place` syntax becomes a thing as per https://github.com/rust-lang/rfcs/pull/2582,
-+// we can backward compatibly change `raw`'s type to Option<Token![raw]> without
-+// the possibility of breaking any code.
-+
-+use proc_macro2::Span;
-+use std::marker::PhantomData;
-+
-+#[cfg(feature = "extra-traits")]
-+use std::fmt::{self, Debug};
-+
-+ast_struct! {
-+ pub struct Reserved {
-+ _private: PhantomData<Span>,
-+ }
-+}
-+
-+impl Default for Reserved {
-+ fn default() -> Self {
-+ Reserved {
-+ _private: PhantomData,
-+ }
-+ }
-+}
-+
-+#[cfg(feature = "clone-impls")]
-+impl Clone for Reserved {
-+ fn clone(&self) -> Self {
-+ Reserved {
-+ _private: self._private,
-+ }
-+ }
-+}
-+
-+#[cfg(feature = "extra-traits")]
-+impl Debug for Reserved {
-+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-+ formatter.debug_struct("Reserved").finish()
-+ }
-+}
-diff --git a/third_party/rust/syn/src/spanned.rs b/third_party/rust/syn/src/spanned.rs
---- a/third_party/rust/syn/src/spanned.rs
-+++ b/third_party/rust/syn/src/spanned.rs
-@@ -1,12 +1,12 @@
- //! A trait that can provide the `Span` of the complete contents of a syntax
- //! tree node.
- //!
--//! *This module is available if Syn is built with both the `"parsing"` and
-+//! *This module is available only if Syn is built with both the `"parsing"` and
- //! `"printing"` features.*
- //!
- //! <br>
- //!
- //! # Example
- //!
- //! Suppose in a procedural macro we have a [`Type`] that we want to assert
- //! implements the [`Sync`] trait. Maybe this is the type of one of the fields
-@@ -92,17 +92,17 @@ use quote::spanned::Spanned as ToTokens;
- /// [`ToTokens`] from the `quote` crate, as well as for `Span` itself.
- ///
- /// [`ToTokens`]: quote::ToTokens
- ///
- /// See the [module documentation] for an example.
- ///
- /// [module documentation]: self
- ///
--/// *This trait is available if Syn is built with both the `"parsing"` and
-+/// *This trait is available only if Syn is built with both the `"parsing"` and
- /// `"printing"` features.*
- pub trait Spanned {
- /// Returns a `Span` covering the complete contents of this syntax tree
- /// node, or [`Span::call_site()`] if this node is empty.
- ///
- /// [`Span::call_site()`]: proc_macro2::Span::call_site
- fn span(&self) -> Span;
- }
-diff --git a/third_party/rust/syn/src/stmt.rs b/third_party/rust/syn/src/stmt.rs
---- a/third_party/rust/syn/src/stmt.rs
-+++ b/third_party/rust/syn/src/stmt.rs
-@@ -1,25 +1,25 @@
- use super::*;
-
- ast_struct! {
- /// A braced block containing Rust statements.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct Block {
- pub brace_token: token::Brace,
- /// Statements in a block
- pub stmts: Vec<Stmt>,
- }
- }
-
- ast_enum! {
- /// A statement, usually ending in a semicolon.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub enum Stmt {
- /// A local (let) binding.
- Local(Local),
-
- /// An item definition.
- Item(Item),
-
- /// Expr without trailing semicolon.
-@@ -28,38 +28,39 @@ ast_enum! {
- /// Expression with trailing semicolon.
- Semi(Expr, Token![;]),
- }
- }
-
- ast_struct! {
- /// A local `let` binding: `let x: u64 = s.parse()?`.
- ///
-- /// *This type is available if Syn is built with the `"full"` feature.*
-+ /// *This type is available only if Syn is built with the `"full"` feature.*
- pub struct Local {
- pub attrs: Vec<Attribute>,
- pub let_token: Token![let],
- pub pat: Pat,
- pub init: Option<(Token![=], Box<Expr>)>,
- pub semi_token: Token![;],
- }
- }
-
- #[cfg(feature = "parsing")]
- pub mod parsing {
- use super::*;
-
-+ use crate::parse::discouraged::Speculative;
- use crate::parse::{Parse, ParseStream, Result};
-- use crate::punctuated::Punctuated;
-+ use proc_macro2::TokenStream;
-
- impl Block {
- /// Parse the body of a block as zero or more statements, possibly
- /// including one trailing expression.
- ///
-- /// *This function is available if Syn is built with the `"parsing"`
-+ /// *This function is available only if Syn is built with the `"parsing"`
- /// feature.*
- ///
- /// # Example
- ///
- /// ```
- /// use syn::{braced, token, Attribute, Block, Ident, Result, Stmt, Token};
- /// use syn::parse::{Parse, ParseStream};
- ///
-@@ -101,18 +102,18 @@ pub mod parsing {
- /// stmts,
- /// })
- /// }
- /// }
- /// ```
- pub fn parse_within(input: ParseStream) -> Result<Vec<Stmt>> {
- let mut stmts = Vec::new();
- loop {
-- while input.peek(Token![;]) {
-- input.parse::<Token![;]>()?;
-+ while let Some(semi) = input.parse::<Option<Token![;]>>()? {
-+ stmts.push(Stmt::Semi(Expr::Verbatim(TokenStream::new()), semi));
- }
- if input.is_empty() {
- break;
- }
- let s = parse_stmt(input, true)?;
- let requires_semicolon = if let Stmt::Expr(s) = &s {
- expr::requires_terminator(s)
- } else {
-@@ -141,65 +142,65 @@ pub mod parsing {
-
- impl Parse for Stmt {
- fn parse(input: ParseStream) -> Result<Self> {
- parse_stmt(input, false)
- }
- }
-
- fn parse_stmt(input: ParseStream, allow_nosemi: bool) -> Result<Stmt> {
-- // TODO: optimize using advance_to
-+ let mut attrs = input.call(Attribute::parse_outer)?;
-+
-+ // brace-style macros; paren and bracket macros get parsed as
-+ // expression statements.
- let ahead = input.fork();
-- ahead.call(Attribute::parse_outer)?;
-+ if let Ok(path) = ahead.call(Path::parse_mod_style) {
-+ if ahead.peek(Token![!]) && (ahead.peek2(token::Brace) || ahead.peek2(Ident)) {
-+ input.advance_to(&ahead);
-+ return stmt_mac(input, attrs, path);
-+ }
-+ }
-
-- if {
-- let ahead = ahead.fork();
-- // Only parse braces here; paren and bracket will get parsed as
-- // expression statements
-- ahead.call(Path::parse_mod_style).is_ok()
-- && ahead.parse::<Token![!]>().is_ok()
-- && (ahead.peek(token::Brace) || ahead.peek(Ident))
-- } {
-- stmt_mac(input)
-- } else if ahead.peek(Token![let]) {
-- stmt_local(input).map(Stmt::Local)
-- } else if ahead.peek(Token![pub])
-- || ahead.peek(Token![crate]) && !ahead.peek2(Token![::])
-- || ahead.peek(Token![extern]) && !ahead.peek2(Token![::])
-- || ahead.peek(Token![use])
-- || ahead.peek(Token![static]) && (ahead.peek2(Token![mut]) || ahead.peek2(Ident))
-- || ahead.peek(Token![const])
-- || ahead.peek(Token![unsafe]) && !ahead.peek2(token::Brace)
-- || ahead.peek(Token![async])
-- && (ahead.peek2(Token![unsafe])
-- || ahead.peek2(Token![extern])
-- || ahead.peek2(Token![fn]))
-- || ahead.peek(Token![fn])
-- || ahead.peek(Token![mod])
-- || ahead.peek(Token![type])
-- || ahead.peek(item::parsing::existential) && ahead.peek2(Token![type])
-- || ahead.peek(Token![struct])
-- || ahead.peek(Token![enum])
-- || ahead.peek(Token![union]) && ahead.peek2(Ident)
-- || ahead.peek(Token![auto]) && ahead.peek2(Token![trait])
-- || ahead.peek(Token![trait])
-- || ahead.peek(Token![default])
-- && (ahead.peek2(Token![unsafe]) || ahead.peek2(Token![impl]))
-- || ahead.peek(Token![impl])
-- || ahead.peek(Token![macro])
-+ if input.peek(Token![let]) {
-+ stmt_local(input, attrs).map(Stmt::Local)
-+ } else if input.peek(Token![pub])
-+ || input.peek(Token![crate]) && !input.peek2(Token![::])
-+ || input.peek(Token![extern])
-+ || input.peek(Token![use])
-+ || input.peek(Token![static]) && (input.peek2(Token![mut]) || input.peek2(Ident))
-+ || input.peek(Token![const])
-+ || input.peek(Token![unsafe]) && !input.peek2(token::Brace)
-+ || input.peek(Token![async])
-+ && (input.peek2(Token![unsafe])
-+ || input.peek2(Token![extern])
-+ || input.peek2(Token![fn]))
-+ || input.peek(Token![fn])
-+ || input.peek(Token![mod])
-+ || input.peek(Token![type])
-+ || input.peek(item::parsing::existential) && input.peek2(Token![type])
-+ || input.peek(Token![struct])
-+ || input.peek(Token![enum])
-+ || input.peek(Token![union]) && input.peek2(Ident)
-+ || input.peek(Token![auto]) && input.peek2(Token![trait])
-+ || input.peek(Token![trait])
-+ || input.peek(Token![default])
-+ && (input.peek2(Token![unsafe]) || input.peek2(Token![impl]))
-+ || input.peek(Token![impl])
-+ || input.peek(Token![macro])
- {
-- input.parse().map(Stmt::Item)
-+ let mut item: Item = input.parse()?;
-+ attrs.extend(item.replace_attrs(Vec::new()));
-+ item.replace_attrs(attrs);
-+ Ok(Stmt::Item(item))
- } else {
-- stmt_expr(input, allow_nosemi)
-+ stmt_expr(input, allow_nosemi, attrs)
- }
- }
-
-- fn stmt_mac(input: ParseStream) -> Result<Stmt> {
-- let attrs = input.call(Attribute::parse_outer)?;
-- let path = input.call(Path::parse_mod_style)?;
-+ fn stmt_mac(input: ParseStream, attrs: Vec<Attribute>, path: Path) -> Result<Stmt> {
- let bang_token: Token![!] = input.parse()?;
- let ident: Option<Ident> = input.parse()?;
- let (delimiter, tokens) = mac::parse_delimiter(input)?;
- let semi_token: Option<Token![;]> = input.parse()?;
-
- Ok(Stmt::Item(Item::Macro(ItemMacro {
- attrs,
- ident,
-@@ -208,43 +209,22 @@ pub mod parsing {
- bang_token,
- delimiter,
- tokens,
- },
- semi_token,
- })))
- }
-
-- fn stmt_local(input: ParseStream) -> Result<Local> {
-+ fn stmt_local(input: ParseStream, attrs: Vec<Attribute>) -> Result<Local> {
- Ok(Local {
-- attrs: input.call(Attribute::parse_outer)?,
-+ attrs,
- let_token: input.parse()?,
- pat: {
-- let leading_vert: Option<Token![|]> = input.parse()?;
-- let mut pat: Pat = input.parse()?;
-- if leading_vert.is_some()
-- || input.peek(Token![|]) && !input.peek(Token![||]) && !input.peek(Token![|=])
-- {
-- let mut cases = Punctuated::new();
-- cases.push_value(pat);
-- while input.peek(Token![|])
-- && !input.peek(Token![||])
-- && !input.peek(Token![|=])
-- {
-- let punct = input.parse()?;
-- cases.push_punct(punct);
-- let pat: Pat = input.parse()?;
-- cases.push_value(pat);
-- }
-- pat = Pat::Or(PatOr {
-- attrs: Vec::new(),
-- leading_vert,
-- cases,
-- });
-- }
-+ let mut pat: Pat = pat::parsing::multi_pat_with_leading_vert(input)?;
- if input.peek(Token![:]) {
- let colon_token: Token![:] = input.parse()?;
- let ty: Type = input.parse()?;
- pat = Pat::Type(PatType {
- attrs: Vec::new(),
- pat: Box::new(pat),
- colon_token,
- ty: Box::new(ty),
-@@ -260,22 +240,29 @@ pub mod parsing {
- } else {
- None
- }
- },
- semi_token: input.parse()?,
- })
- }
-
-- fn stmt_expr(input: ParseStream, allow_nosemi: bool) -> Result<Stmt> {
-- let mut attrs = input.call(Attribute::parse_outer)?;
-+ fn stmt_expr(
-+ input: ParseStream,
-+ allow_nosemi: bool,
-+ mut attrs: Vec<Attribute>,
-+ ) -> Result<Stmt> {
- let mut e = expr::parsing::expr_early(input)?;
-
-- attrs.extend(e.replace_attrs(Vec::new()));
-- e.replace_attrs(attrs);
-+ let mut attr_target = &mut e;
-+ while let Expr::Binary(e) = attr_target {
-+ attr_target = &mut e.left;
-+ }
-+ attrs.extend(attr_target.replace_attrs(Vec::new()));
-+ attr_target.replace_attrs(attrs);
-
- if input.peek(Token![;]) {
- return Ok(Stmt::Semi(e, input.parse()?));
- }
-
- if allow_nosemi || !expr::requires_terminator(&e) {
- Ok(Stmt::Expr(e))
- } else {
-diff --git a/third_party/rust/syn/src/token.rs b/third_party/rust/syn/src/token.rs
---- a/third_party/rust/syn/src/token.rs
-+++ b/third_party/rust/syn/src/token.rs
-@@ -83,44 +83,41 @@
- //!
- //! - Field access to its span — `let sp = the_token.span`
- //!
- //! [Peeking]: ../parse/struct.ParseBuffer.html#method.peek
- //! [Parsing]: ../parse/struct.ParseBuffer.html#method.parse
- //! [Printing]: https://docs.rs/quote/1.0/quote/trait.ToTokens.html
- //! [`Span`]: https://docs.rs/proc-macro2/1.0/proc_macro2/struct.Span.html
-
--use std;
- #[cfg(feature = "extra-traits")]
- use std::cmp;
- #[cfg(feature = "extra-traits")]
- use std::fmt::{self, Debug};
- #[cfg(feature = "extra-traits")]
- use std::hash::{Hash, Hasher};
- use std::ops::{Deref, DerefMut};
-
--#[cfg(feature = "parsing")]
--use proc_macro2::Delimiter;
- #[cfg(any(feature = "parsing", feature = "printing"))]
- use proc_macro2::Ident;
- use proc_macro2::Span;
- #[cfg(feature = "printing")]
- use proc_macro2::TokenStream;
-+#[cfg(feature = "parsing")]
-+use proc_macro2::{Delimiter, Literal, Punct, TokenTree};
- #[cfg(feature = "printing")]
- use quote::{ToTokens, TokenStreamExt};
-
- use self::private::WithSpan;
- #[cfg(feature = "parsing")]
- use crate::buffer::Cursor;
- #[cfg(feature = "parsing")]
- use crate::error::Result;
--#[cfg(any(feature = "full", feature = "derive"))]
- #[cfg(feature = "parsing")]
- use crate::lifetime::Lifetime;
--#[cfg(any(feature = "full", feature = "derive"))]
- #[cfg(feature = "parsing")]
- use crate::lit::{Lit, LitBool, LitByte, LitByteStr, LitChar, LitFloat, LitInt, LitStr};
- #[cfg(feature = "parsing")]
- use crate::lookahead;
- #[cfg(feature = "parsing")]
- use crate::parse::{Parse, ParseStream};
- use crate::span::IntoSpans;
-
-@@ -150,31 +147,30 @@ mod private {
- pub struct WithSpan {
- pub span: Span,
- }
- }
-
- #[cfg(feature = "parsing")]
- impl private::Sealed for Ident {}
-
--#[cfg(any(feature = "full", feature = "derive"))]
- #[cfg(feature = "parsing")]
- fn peek_impl(cursor: Cursor, peek: fn(ParseStream) -> bool) -> bool {
-+ use crate::parse::Unexpected;
- use std::cell::Cell;
- use std::rc::Rc;
-
- let scope = Span::call_site();
-- let unexpected = Rc::new(Cell::new(None));
-+ let unexpected = Rc::new(Cell::new(Unexpected::None));
- let buffer = crate::parse::new_parse_buffer(scope, cursor, unexpected);
- peek(&buffer)
- }
-
--#[cfg(any(feature = "full", feature = "derive"))]
- macro_rules! impl_token {
-- ($name:ident $display:expr) => {
-+ ($display:tt $name:ty) => {
- #[cfg(feature = "parsing")]
- impl Token for $name {
- fn peek(cursor: Cursor) -> bool {
- fn peek(input: ParseStream) -> bool {
- <$name as Parse>::parse(input).is_ok()
- }
- peek_impl(cursor, peek)
- }
-@@ -184,34 +180,48 @@ macro_rules! impl_token {
- }
- }
-
- #[cfg(feature = "parsing")]
- impl private::Sealed for $name {}
- };
- }
-
--#[cfg(any(feature = "full", feature = "derive"))]
--impl_token!(Lifetime "lifetime");
--#[cfg(any(feature = "full", feature = "derive"))]
--impl_token!(Lit "literal");
--#[cfg(any(feature = "full", feature = "derive"))]
--impl_token!(LitStr "string literal");
--#[cfg(any(feature = "full", feature = "derive"))]
--impl_token!(LitByteStr "byte string literal");
--#[cfg(any(feature = "full", feature = "derive"))]
--impl_token!(LitByte "byte literal");
--#[cfg(any(feature = "full", feature = "derive"))]
--impl_token!(LitChar "character literal");
--#[cfg(any(feature = "full", feature = "derive"))]
--impl_token!(LitInt "integer literal");
--#[cfg(any(feature = "full", feature = "derive"))]
--impl_token!(LitFloat "floating point literal");
--#[cfg(any(feature = "full", feature = "derive"))]
--impl_token!(LitBool "boolean literal");
-+impl_token!("lifetime" Lifetime);
-+impl_token!("literal" Lit);
-+impl_token!("string literal" LitStr);
-+impl_token!("byte string literal" LitByteStr);
-+impl_token!("byte literal" LitByte);
-+impl_token!("character literal" LitChar);
-+impl_token!("integer literal" LitInt);
-+impl_token!("floating point literal" LitFloat);
-+impl_token!("boolean literal" LitBool);
-+impl_token!("group token" proc_macro2::Group);
-+
-+macro_rules! impl_low_level_token {
-+ ($display:tt $ty:ident $get:ident) => {
-+ #[cfg(feature = "parsing")]
-+ impl Token for $ty {
-+ fn peek(cursor: Cursor) -> bool {
-+ cursor.$get().is_some()
-+ }
-+
-+ fn display() -> &'static str {
-+ $display
-+ }
-+ }
-+
-+ #[cfg(feature = "parsing")]
-+ impl private::Sealed for $ty {}
-+ };
-+}
-+
-+impl_low_level_token!("punctuation token" Punct punct);
-+impl_low_level_token!("literal" Literal literal);
-+impl_low_level_token!("token" TokenTree token_tree);
-
- // Not public API.
- #[doc(hidden)]
- #[cfg(feature = "parsing")]
- pub trait CustomToken {
- fn peek(cursor: Cursor) -> bool;
- fn display() -> &'static str;
- }
-@@ -228,17 +238,16 @@ impl<T: CustomToken> Token for T {
- fn display() -> &'static str {
- <Self as CustomToken>::display()
- }
- }
-
- macro_rules! define_keywords {
- ($($token:tt pub struct $name:ident #[$doc:meta])*) => {
- $(
-- #[cfg_attr(feature = "clone-impls", derive(Copy, Clone))]
- #[$doc]
- ///
- /// Don't try to remember the name of this type — use the
- /// [`Token!`] macro instead.
- ///
- /// [`Token!`]: crate::token
- pub struct $name {
- pub span: Span,
-@@ -255,16 +264,26 @@ macro_rules! define_keywords {
- impl std::default::Default for $name {
- fn default() -> Self {
- $name {
- span: Span::call_site(),
- }
- }
- }
-
-+ #[cfg(feature = "clone-impls")]
-+ impl Copy for $name {}
-+
-+ #[cfg(feature = "clone-impls")]
-+ impl Clone for $name {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+ }
-+
- #[cfg(feature = "extra-traits")]
- impl Debug for $name {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- f.write_str(stringify!($name))
- }
- }
-
- #[cfg(feature = "extra-traits")]
-@@ -333,17 +352,16 @@ macro_rules! impl_deref_if_len_is_1 {
- };
-
- ($name:ident/$len:tt) => {};
- }
-
- macro_rules! define_punctuation_structs {
- ($($token:tt pub struct $name:ident/$len:tt #[$doc:meta])*) => {
- $(
-- #[cfg_attr(feature = "clone-impls", derive(Copy, Clone))]
- #[repr(C)]
- #[$doc]
- ///
- /// Don't try to remember the name of this type — use the
- /// [`Token!`] macro instead.
- ///
- /// [`Token!`]: crate::token
- pub struct $name {
-@@ -361,16 +379,26 @@ macro_rules! define_punctuation_structs
- impl std::default::Default for $name {
- fn default() -> Self {
- $name {
- spans: [Span::call_site(); $len],
- }
- }
- }
-
-+ #[cfg(feature = "clone-impls")]
-+ impl Copy for $name {}
-+
-+ #[cfg(feature = "clone-impls")]
-+ impl Clone for $name {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+ }
-+
- #[cfg(feature = "extra-traits")]
- impl Debug for $name {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- f.write_str(stringify!($name))
- }
- }
-
- #[cfg(feature = "extra-traits")]
-@@ -431,17 +459,16 @@ macro_rules! define_punctuation {
- impl private::Sealed for $name {}
- )*
- };
- }
-
- macro_rules! define_delimiters {
- ($($token:tt pub struct $name:ident #[$doc:meta])*) => {
- $(
-- #[cfg_attr(feature = "clone-impls", derive(Copy, Clone))]
- #[$doc]
- pub struct $name {
- pub span: Span,
- }
-
- #[doc(hidden)]
- #[allow(non_snake_case)]
- pub fn $name<S: IntoSpans<[Span; 1]>>(span: S) -> $name {
-@@ -453,16 +480,26 @@ macro_rules! define_delimiters {
- impl std::default::Default for $name {
- fn default() -> Self {
- $name {
- span: Span::call_site(),
- }
- }
- }
-
-+ #[cfg(feature = "clone-impls")]
-+ impl Copy for $name {}
-+
-+ #[cfg(feature = "clone-impls")]
-+ impl Clone for $name {
-+ fn clone(&self) -> Self {
-+ *self
-+ }
-+ }
-+
- #[cfg(feature = "extra-traits")]
- impl Debug for $name {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- f.write_str(stringify!($name))
- }
- }
-
- #[cfg(feature = "extra-traits")]
-@@ -850,17 +887,17 @@ pub mod parsing {
- if let Some((ident, _rest)) = cursor.ident() {
- ident == token
- } else {
- false
- }
- }
-
- pub fn punct<S: FromSpans>(input: ParseStream, token: &str) -> Result<S> {
-- let mut spans = [input.cursor().span(); 3];
-+ let mut spans = [input.span(); 3];
- punct_helper(input, token, &mut spans)?;
- Ok(S::from_spans(&spans))
- }
-
- fn punct_helper(input: ParseStream, token: &str, spans: &mut [Span; 3]) -> Result<()> {
- input.step(|cursor| {
- let mut cursor = *cursor;
- assert!(token.len() <= spans.len());
-diff --git a/third_party/rust/syn/src/tt.rs b/third_party/rust/syn/src/tt.rs
---- a/third_party/rust/syn/src/tt.rs
-+++ b/third_party/rust/syn/src/tt.rs
-@@ -13,18 +13,18 @@ impl<'a> PartialEq for TokenTreeHelper<'
- match (g1.delimiter(), g2.delimiter()) {
- (Delimiter::Parenthesis, Delimiter::Parenthesis)
- | (Delimiter::Brace, Delimiter::Brace)
- | (Delimiter::Bracket, Delimiter::Bracket)
- | (Delimiter::None, Delimiter::None) => {}
- _ => return false,
- }
-
-- let s1 = g1.stream().clone().into_iter();
-- let mut s2 = g2.stream().clone().into_iter();
-+ let s1 = g1.stream().into_iter();
-+ let mut s2 = g2.stream().into_iter();
-
- for item1 in s1 {
- let item2 = match s2.next() {
- Some(item) => item,
- None => return false,
- };
- if TokenTreeHelper(&item1) != TokenTreeHelper(&item2) {
- return false;
-@@ -55,17 +55,17 @@ impl<'a> Hash for TokenTreeHelper<'a> {
- 0u8.hash(h);
- match g.delimiter() {
- Delimiter::Parenthesis => 0u8.hash(h),
- Delimiter::Brace => 1u8.hash(h),
- Delimiter::Bracket => 2u8.hash(h),
- Delimiter::None => 3u8.hash(h),
- }
-
-- for item in g.stream().clone() {
-+ for item in g.stream() {
- TokenTreeHelper(&item).hash(h);
- }
- 0xffu8.hash(h); // terminator w/ a variant we don't normally hash
- }
- TokenTree::Punct(op) => {
- 1u8.hash(h);
- op.as_char().hash(h);
- match op.spacing() {
-diff --git a/third_party/rust/syn/src/ty.rs b/third_party/rust/syn/src/ty.rs
---- a/third_party/rust/syn/src/ty.rs
-+++ b/third_party/rust/syn/src/ty.rs
-@@ -1,31 +1,27 @@
- use super::*;
- use crate::punctuated::Punctuated;
--#[cfg(feature = "extra-traits")]
--use crate::tt::TokenStreamHelper;
- use proc_macro2::TokenStream;
--#[cfg(feature = "extra-traits")]
--use std::hash::{Hash, Hasher};
-
- ast_enum_of_structs! {
- /// The possible types that a Rust value could have.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- ///
- /// # Syntax tree enum
- ///
- /// This type is a [syntax tree enum].
- ///
- /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums
- //
- // TODO: change syntax-tree-enum link to an intra rustdoc link, currently
- // blocked on https://github.com/rust-lang/rust/issues/62833
-- pub enum Type #manual_extra_traits {
-+ pub enum Type {
- /// A fixed size array type: `[T; n]`.
- Array(TypeArray),
-
- /// A bare function type: `fn(usize) -> bool`.
- BareFn(TypeBareFn),
-
- /// A type contained within invisible delimiters.
- Group(TypeGroup),
-@@ -72,295 +68,194 @@ ast_enum_of_structs! {
- #[doc(hidden)]
- __Nonexhaustive,
- }
- }
-
- ast_struct! {
- /// A fixed size array type: `[T; n]`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeArray {
- pub bracket_token: token::Bracket,
- pub elem: Box<Type>,
- pub semi_token: Token![;],
- pub len: Expr,
- }
- }
-
- ast_struct! {
- /// A bare function type: `fn(usize) -> bool`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeBareFn {
- pub lifetimes: Option<BoundLifetimes>,
- pub unsafety: Option<Token![unsafe]>,
- pub abi: Option<Abi>,
- pub fn_token: Token![fn],
- pub paren_token: token::Paren,
- pub inputs: Punctuated<BareFnArg, Token![,]>,
- pub variadic: Option<Variadic>,
- pub output: ReturnType,
- }
- }
-
- ast_struct! {
- /// A type contained within invisible delimiters.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeGroup {
- pub group_token: token::Group,
- pub elem: Box<Type>,
- }
- }
-
- ast_struct! {
- /// An `impl Bound1 + Bound2 + Bound3` type where `Bound` is a trait or
- /// a lifetime.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeImplTrait {
- pub impl_token: Token![impl],
- pub bounds: Punctuated<TypeParamBound, Token![+]>,
- }
- }
-
- ast_struct! {
- /// Indication that a type should be inferred by the compiler: `_`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeInfer {
- pub underscore_token: Token![_],
- }
- }
-
- ast_struct! {
- /// A macro in the type position.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeMacro {
- pub mac: Macro,
- }
- }
-
- ast_struct! {
- /// The never type: `!`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeNever {
- pub bang_token: Token![!],
- }
- }
-
- ast_struct! {
- /// A parenthesized type equivalent to the inner type.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeParen {
- pub paren_token: token::Paren,
- pub elem: Box<Type>,
- }
- }
-
- ast_struct! {
- /// A path like `std::slice::Iter`, optionally qualified with a
- /// self-type as in `<Vec<T> as SomeTrait>::Associated`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypePath {
- pub qself: Option<QSelf>,
- pub path: Path,
- }
- }
-
- ast_struct! {
- /// A raw pointer type: `*const T` or `*mut T`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypePtr {
- pub star_token: Token![*],
- pub const_token: Option<Token![const]>,
- pub mutability: Option<Token![mut]>,
- pub elem: Box<Type>,
- }
- }
-
- ast_struct! {
- /// A reference type: `&'a T` or `&'a mut T`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeReference {
- pub and_token: Token![&],
- pub lifetime: Option<Lifetime>,
- pub mutability: Option<Token![mut]>,
- pub elem: Box<Type>,
- }
- }
-
- ast_struct! {
- /// A dynamically sized slice type: `[T]`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeSlice {
- pub bracket_token: token::Bracket,
- pub elem: Box<Type>,
- }
- }
-
- ast_struct! {
- /// A trait object type `Bound1 + Bound2 + Bound3` where `Bound` is a
- /// trait or a lifetime.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeTraitObject {
- pub dyn_token: Option<Token![dyn]>,
- pub bounds: Punctuated<TypeParamBound, Token![+]>,
- }
- }
-
- ast_struct! {
- /// A tuple type: `(A, B, C, String)`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or
-+ /// *This type is available only if Syn is built with the `"derive"` or
- /// `"full"` feature.*
- pub struct TypeTuple {
- pub paren_token: token::Paren,
- pub elems: Punctuated<Type, Token![,]>,
- }
- }
-
--#[cfg(feature = "extra-traits")]
--impl Eq for Type {}
--
--#[cfg(feature = "extra-traits")]
--impl PartialEq for Type {
-- fn eq(&self, other: &Self) -> bool {
-- match (self, other) {
-- (Type::Array(this), Type::Array(other)) => this == other,
-- (Type::BareFn(this), Type::BareFn(other)) => this == other,
-- (Type::Group(this), Type::Group(other)) => this == other,
-- (Type::ImplTrait(this), Type::ImplTrait(other)) => this == other,
-- (Type::Infer(this), Type::Infer(other)) => this == other,
-- (Type::Macro(this), Type::Macro(other)) => this == other,
-- (Type::Never(this), Type::Never(other)) => this == other,
-- (Type::Paren(this), Type::Paren(other)) => this == other,
-- (Type::Path(this), Type::Path(other)) => this == other,
-- (Type::Ptr(this), Type::Ptr(other)) => this == other,
-- (Type::Reference(this), Type::Reference(other)) => this == other,
-- (Type::Slice(this), Type::Slice(other)) => this == other,
-- (Type::TraitObject(this), Type::TraitObject(other)) => this == other,
-- (Type::Tuple(this), Type::Tuple(other)) => this == other,
-- (Type::Verbatim(this), Type::Verbatim(other)) => {
-- TokenStreamHelper(this) == TokenStreamHelper(other)
-- }
-- _ => false,
-- }
-- }
--}
--
--#[cfg(feature = "extra-traits")]
--impl Hash for Type {
-- fn hash<H>(&self, hash: &mut H)
-- where
-- H: Hasher,
-- {
-- match self {
-- Type::Array(ty) => {
-- hash.write_u8(0);
-- ty.hash(hash);
-- }
-- Type::BareFn(ty) => {
-- hash.write_u8(1);
-- ty.hash(hash);
-- }
-- Type::Group(ty) => {
-- hash.write_u8(2);
-- ty.hash(hash);
-- }
-- Type::ImplTrait(ty) => {
-- hash.write_u8(3);
-- ty.hash(hash);
-- }
-- Type::Infer(ty) => {
-- hash.write_u8(4);
-- ty.hash(hash);
-- }
-- Type::Macro(ty) => {
-- hash.write_u8(5);
-- ty.hash(hash);
-- }
-- Type::Never(ty) => {
-- hash.write_u8(6);
-- ty.hash(hash);
-- }
-- Type::Paren(ty) => {
-- hash.write_u8(7);
-- ty.hash(hash);
-- }
-- Type::Path(ty) => {
-- hash.write_u8(8);
-- ty.hash(hash);
-- }
-- Type::Ptr(ty) => {
-- hash.write_u8(9);
-- ty.hash(hash);
-- }
-- Type::Reference(ty) => {
-- hash.write_u8(10);
-- ty.hash(hash);
-- }
-- Type::Slice(ty) => {
-- hash.write_u8(11);
-- ty.hash(hash);
-- }
-- Type::TraitObject(ty) => {
-- hash.write_u8(12);
-- ty.hash(hash);
-- }
-- Type::Tuple(ty) => {
-- hash.write_u8(13);
-- ty.hash(hash);
-- }
-- Type::Verbatim(ty) => {
-- hash.write_u8(14);
-- TokenStreamHelper(ty).hash(hash);
-- }
-- Type::__Nonexhaustive => unreachable!(),
-- }
-- }
--}
--
- ast_struct! {
- /// The binary interface of a function: `extern "C"`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct Abi {
- pub extern_token: Token![extern],
- pub name: Option<LitStr>,
- }
- }
-
- ast_struct! {
- /// An argument in a function type: the `usize` in `fn(usize) -> bool`.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct BareFnArg {
- pub attrs: Vec<Attribute>,
- pub name: Option<(Ident, Token![:])>,
- pub ty: Type,
- }
- }
-
-@@ -372,28 +267,28 @@ ast_struct! {
- /// # struct c_int;
- /// #
- /// extern "C" {
- /// fn printf(format: *const c_char, ...) -> c_int;
- /// // ^^^
- /// }
- /// ```
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub struct Variadic {
- pub attrs: Vec<Attribute>,
- pub dots: Token![...],
- }
- }
-
- ast_enum! {
- /// Return type of a function signature.
- ///
-- /// *This type is available if Syn is built with the `"derive"` or `"full"`
-+ /// *This type is available only if Syn is built with the `"derive"` or `"full"`
- /// feature.*
- pub enum ReturnType {
- /// Return type is not specified.
- ///
- /// Functions default to `()` and closures default to type inference.
- Default,
- /// A particular type is returned.
- Type(Token![->], Box<Type>),
-@@ -402,39 +297,44 @@ ast_enum! {
-
- #[cfg(feature = "parsing")]
- pub mod parsing {
- use super::*;
-
- use crate::ext::IdentExt;
- use crate::parse::{Parse, ParseStream, Result};
- use crate::path;
-+ use proc_macro2::{Punct, Spacing, TokenTree};
-+ use std::iter::FromIterator;
-
- impl Parse for Type {
- fn parse(input: ParseStream) -> Result<Self> {
-- ambig_ty(input, true)
-+ let allow_plus = true;
-+ ambig_ty(input, allow_plus)
- }
- }
-
- impl Type {
- /// In some positions, types may not contain the `+` character, to
- /// disambiguate them. For example in the expression `1 as T`, T may not
- /// contain a `+` character.
- ///
- /// This parser does not allow a `+`, while the default parser does.
- pub fn without_plus(input: ParseStream) -> Result<Self> {
-- ambig_ty(input, false)
-+ let allow_plus = false;
-+ ambig_ty(input, allow_plus)
- }
- }
-
- fn ambig_ty(input: ParseStream, allow_plus: bool) -> Result<Type> {
-- if input.peek(token::Group) {
-+ if input.peek(token::Group) && !input.peek2(Token![::]) && !input.peek2(Token![<]) {
- return input.parse().map(Type::Group);
- }
-
-+ let begin = input.fork();
- let mut lifetimes = None::<BoundLifetimes>;
- let mut lookahead = input.lookahead1();
- if lookahead.peek(Token![for]) {
- lifetimes = input.parse()?;
- lookahead = input.lookahead1();
- if !lookahead.peek(Ident)
- && !lookahead.peek(Token![fn])
- && !lookahead.peek(Token![unsafe])
-@@ -519,17 +419,17 @@ pub mod parsing {
- }
- match bounds.into_iter().next().unwrap() {
- TypeParamBound::Trait(trait_bound) => {
- TypeParamBound::Trait(TraitBound {
- paren_token: Some(paren_token),
- ..trait_bound
- })
- }
-- other => other,
-+ other @ TypeParamBound::Lifetime(_) => other,
- }
- }
- _ => break,
- };
- return Ok(Type::TraitObject(TypeTraitObject {
- dyn_token: None,
- bounds: {
- let mut bounds = Punctuated::new();
-@@ -544,27 +444,30 @@ pub mod parsing {
- }
- }
- Ok(Type::Paren(TypeParen {
- paren_token,
- elem: Box::new(first),
- }))
- } else if lookahead.peek(Token![fn])
- || lookahead.peek(Token![unsafe])
-- || lookahead.peek(Token![extern]) && !input.peek2(Token![::])
-+ || lookahead.peek(Token![extern])
- {
-- let mut bare_fn: TypeBareFn = input.parse()?;
-- bare_fn.lifetimes = lifetimes;
-- Ok(Type::BareFn(bare_fn))
-+ let allow_mut_self = true;
-+ if let Some(mut bare_fn) = parse_bare_fn(input, allow_mut_self)? {
-+ bare_fn.lifetimes = lifetimes;
-+ Ok(Type::BareFn(bare_fn))
-+ } else {
-+ Ok(Type::Verbatim(verbatim::between(begin, input)))
-+ }
- } else if lookahead.peek(Ident)
- || input.peek(Token![super])
- || input.peek(Token![self])
- || input.peek(Token![Self])
- || input.peek(Token![crate])
-- || input.peek(Token![extern])
- || lookahead.peek(Token![::])
- || lookahead.peek(Token![<])
- {
- if input.peek(Token![dyn]) {
- let mut trait_object: TypeTraitObject = input.parse()?;
- if lifetimes.is_some() {
- match trait_object.bounds.iter_mut().next().unwrap() {
- TypeParamBound::Trait(trait_bound) => {
-@@ -717,48 +620,68 @@ pub mod parsing {
- // & binds tighter than +, so we don't allow + here.
- elem: Box::new(input.call(Type::without_plus)?),
- })
- }
- }
-
- impl Parse for TypeBareFn {
- fn parse(input: ParseStream) -> Result<Self> {
-- let args;
-- let allow_variadic;
-- Ok(TypeBareFn {
-- lifetimes: input.parse()?,
-- unsafety: input.parse()?,
-- abi: input.parse()?,
-- fn_token: input.parse()?,
-- paren_token: parenthesized!(args in input),
-- inputs: {
-- let mut inputs = Punctuated::new();
-- while !args.is_empty() && !args.peek(Token![...]) {
-- inputs.push_value(args.parse()?);
-- if args.is_empty() {
-- break;
-- }
-- inputs.push_punct(args.parse()?);
-+ let allow_mut_self = false;
-+ parse_bare_fn(input, allow_mut_self).map(Option::unwrap)
-+ }
-+ }
-+
-+ fn parse_bare_fn(input: ParseStream, allow_mut_self: bool) -> Result<Option<TypeBareFn>> {
-+ let args;
-+ let mut variadic = None;
-+ let mut has_mut_self = false;
-+
-+ let bare_fn = TypeBareFn {
-+ lifetimes: input.parse()?,
-+ unsafety: input.parse()?,
-+ abi: input.parse()?,
-+ fn_token: input.parse()?,
-+ paren_token: parenthesized!(args in input),
-+ inputs: {
-+ let mut inputs = Punctuated::new();
-+
-+ while !args.is_empty() {
-+ let attrs = args.call(Attribute::parse_outer)?;
-+
-+ if inputs.empty_or_trailing() && args.peek(Token![...]) {
-+ variadic = Some(Variadic {
-+ attrs,
-+ dots: args.parse()?,
-+ });
-+ break;
- }
-- allow_variadic = inputs.empty_or_trailing();
-- inputs
-- },
-- variadic: {
-- if allow_variadic && args.peek(Token![...]) {
-- Some(Variadic {
-- attrs: Vec::new(),
-- dots: args.parse()?,
-- })
-+
-+ if let Some(arg) = parse_bare_fn_arg(&args, allow_mut_self)? {
-+ inputs.push_value(BareFnArg { attrs, ..arg });
- } else {
-- None
-+ has_mut_self = true;
-+ }
-+ if args.is_empty() {
-+ break;
- }
-- },
-- output: input.call(ReturnType::without_plus)?,
-- })
-+
-+ inputs.push_punct(args.parse()?);
-+ }
-+
-+ inputs
-+ },
-+ variadic,
-+ output: input.call(ReturnType::without_plus)?,
-+ };
-+
-+ if has_mut_self {
-+ Ok(None)
-+ } else {
-+ Ok(Some(bare_fn))
- }
- }
-
- impl Parse for TypeNever {
- fn parse(input: ParseStream) -> Result<Self> {
- Ok(TypeNever {
- bang_token: input.parse()?,
- })
-@@ -771,19 +694,37 @@ pub mod parsing {
- underscore_token: input.parse()?,
- })
- }
- }
-
- impl Parse for TypeTuple {
- fn parse(input: ParseStream) -> Result<Self> {
- let content;
-+ let paren_token = parenthesized!(content in input);
-+
-+ if content.is_empty() {
-+ return Ok(TypeTuple {
-+ paren_token,
-+ elems: Punctuated::new(),
-+ });
-+ }
-+
-+ let first: Type = content.parse()?;
- Ok(TypeTuple {
-- paren_token: parenthesized!(content in input),
-- elems: content.parse_terminated(Type::parse)?,
-+ paren_token,
-+ elems: {
-+ let mut elems = Punctuated::new();
-+ elems.push_value(first);
-+ elems.push_punct(content.parse()?);
-+ let rest: Punctuated<Type, Token![,]> =
-+ content.parse_terminated(Parse::parse)?;
-+ elems.extend(rest);
-+ elems
-+ },
- })
- }
- }
-
- impl Parse for TypeMacro {
- fn parse(input: ParseStream) -> Result<Self> {
- Ok(TypeMacro {
- mac: input.parse()?,
-@@ -802,19 +743,21 @@ pub mod parsing {
- }
-
- Ok(TypePath { qself, path })
- }
- }
-
- impl ReturnType {
- pub fn without_plus(input: ParseStream) -> Result<Self> {
-- Self::parse(input, false)
-+ let allow_plus = false;
-+ Self::parse(input, allow_plus)
- }
-
-+ #[doc(hidden)]
- pub fn parse(input: ParseStream, allow_plus: bool) -> Result<Self> {
- if input.peek(Token![->]) {
- let arrow = input.parse()?;
- let ty = ambig_ty(input, allow_plus)?;
- Ok(ReturnType::Type(arrow, Box::new(ty)))
- } else {
- Ok(ReturnType::Default)
- }
-@@ -839,20 +782,22 @@ pub mod parsing {
- return true;
- }
- }
- false
- }
-
- impl TypeTraitObject {
- pub fn without_plus(input: ParseStream) -> Result<Self> {
-- Self::parse(input, false)
-+ let allow_plus = false;
-+ Self::parse(input, allow_plus)
- }
-
- // Only allow multiple trait references if allow_plus is true.
-+ #[doc(hidden)]
- pub fn parse(input: ParseStream, allow_plus: bool) -> Result<Self> {
- Ok(TypeTraitObject {
- dyn_token: input.parse()?,
- bounds: {
- let mut bounds = Punctuated::new();
- if allow_plus {
- loop {
- bounds.push_value(input.parse()?);
-@@ -905,48 +850,99 @@ pub mod parsing {
- group_token: group.token,
- elem: group.content.parse()?,
- })
- }
- }
-
- impl Parse for TypeParen {
- fn parse(input: ParseStream) -> Result<Self> {
-- Self::parse(input, false)
-+ let allow_plus = false;
-+ Self::parse(input, allow_plus)
- }
- }
-
- impl TypeParen {
- fn parse(input: ParseStream, allow_plus: bool) -> Result<Self> {
- let content;
- Ok(TypeParen {
- paren_token: parenthesized!(content in input),
- elem: Box::new(ambig_ty(&content, allow_plus)?),
- })
- }
- }
-
- impl Parse for BareFnArg {
- fn parse(input: ParseStream) -> Result<Self> {
-- Ok(BareFnArg {
-- attrs: input.call(Attribute::parse_outer)?,
-- name: {
-- if (input.peek(Ident) || input.peek(Token![_]))
-- && input.peek2(Token![:])
-- && !input.peek2(Token![::])
-- {
-- let name = input.call(Ident::parse_any)?;
-- let colon: Token![:] = input.parse()?;
-- Some((name, colon))
-- } else {
-- None
-- }
-- },
-- ty: input.parse()?,
-- })
-+ let allow_mut_self = false;
-+ parse_bare_fn_arg(input, allow_mut_self).map(Option::unwrap)
-+ }
-+ }
-+
-+ fn parse_bare_fn_arg(
-+ input: ParseStream,
-+ mut allow_mut_self: bool,
-+ ) -> Result<Option<BareFnArg>> {
-+ let mut has_mut_self = false;
-+ let arg = BareFnArg {
-+ attrs: input.call(Attribute::parse_outer)?,
-+ name: {
-+ if (input.peek(Ident) || input.peek(Token![_]) || input.peek(Token![self]))
-+ && input.peek2(Token![:])
-+ && !input.peek2(Token![::])
-+ {
-+ let name = input.call(Ident::parse_any)?;
-+ let colon: Token![:] = input.parse()?;
-+ Some((name, colon))
-+ } else if allow_mut_self
-+ && input.peek(Token![mut])
-+ && input.peek2(Token![self])
-+ && input.peek3(Token![:])
-+ && !input.peek3(Token![::])
-+ {
-+ has_mut_self = true;
-+ allow_mut_self = false;
-+ input.parse::<Token![mut]>()?;
-+ input.parse::<Token![self]>()?;
-+ input.parse::<Token![:]>()?;
-+ None
-+ } else {
-+ None
-+ }
-+ },
-+ ty: if !has_mut_self && input.peek(Token![...]) {
-+ let dot3 = input.parse::<Token![...]>()?;
-+ let args = vec![
-+ TokenTree::Punct(Punct::new('.', Spacing::Joint)),
-+ TokenTree::Punct(Punct::new('.', Spacing::Joint)),
-+ TokenTree::Punct(Punct::new('.', Spacing::Alone)),
-+ ];
-+ let tokens = TokenStream::from_iter(args.into_iter().zip(&dot3.spans).map(
-+ |(mut arg, span)| {
-+ arg.set_span(*span);
-+ arg
-+ },
-+ ));
-+ Type::Verbatim(tokens)
-+ } else if allow_mut_self && input.peek(Token![mut]) && input.peek2(Token![self]) {
-+ has_mut_self = true;
-+ input.parse::<Token![mut]>()?;
-+ Type::Path(TypePath {
-+ qself: None,
-+ path: input.parse::<Token![self]>()?.into(),
-+ })
-+ } else {
-+ input.parse()?
-+ },
-+ };
-+
-+ if has_mut_self {
-+ Ok(None)
-+ } else {
-+ Ok(Some(arg))
- }
- }
-
- impl Parse for Abi {
- fn parse(input: ParseStream) -> Result<Self> {
- Ok(Abi {
- extern_token: input.parse()?,
- name: input.parse()?,
-diff --git a/third_party/rust/syn/src/verbatim.rs b/third_party/rust/syn/src/verbatim.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/src/verbatim.rs
-@@ -0,0 +1,15 @@
-+use crate::parse::{ParseBuffer, ParseStream};
-+use proc_macro2::TokenStream;
-+use std::iter;
-+
-+pub fn between<'a>(begin: ParseBuffer<'a>, end: ParseStream<'a>) -> TokenStream {
-+ let end = end.cursor();
-+ let mut cursor = begin.cursor();
-+ let mut tokens = TokenStream::new();
-+ while cursor != end {
-+ let (tt, next) = cursor.token_tree().unwrap();
-+ tokens.extend(iter::once(tt));
-+ cursor = next;
-+ }
-+ tokens
-+}
-diff --git a/third_party/rust/syn/src/whitespace.rs b/third_party/rust/syn/src/whitespace.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/src/whitespace.rs
-@@ -0,0 +1,65 @@
-+pub fn skip(mut s: &str) -> &str {
-+ 'skip: while !s.is_empty() {
-+ let byte = s.as_bytes()[0];
-+ if byte == b'/' {
-+ if s.starts_with("//")
-+ && (!s.starts_with("///") || s.starts_with("////"))
-+ && !s.starts_with("//!")
-+ {
-+ if let Some(i) = s.find('\n') {
-+ s = &s[i + 1..];
-+ continue;
-+ } else {
-+ return "";
-+ }
-+ } else if s.starts_with("/**/") {
-+ s = &s[4..];
-+ continue;
-+ } else if s.starts_with("/*")
-+ && (!s.starts_with("/**") || s.starts_with("/***"))
-+ && !s.starts_with("/*!")
-+ {
-+ let mut depth = 0;
-+ let bytes = s.as_bytes();
-+ let mut i = 0;
-+ let upper = bytes.len() - 1;
-+ while i < upper {
-+ if bytes[i] == b'/' && bytes[i + 1] == b'*' {
-+ depth += 1;
-+ i += 1; // eat '*'
-+ } else if bytes[i] == b'*' && bytes[i + 1] == b'/' {
-+ depth -= 1;
-+ if depth == 0 {
-+ s = &s[i + 2..];
-+ continue 'skip;
-+ }
-+ i += 1; // eat '/'
-+ }
-+ i += 1;
-+ }
-+ return s;
-+ }
-+ }
-+ match byte {
-+ b' ' | 0x09..=0x0d => {
-+ s = &s[1..];
-+ continue;
-+ }
-+ b if b <= 0x7f => {}
-+ _ => {
-+ let ch = s.chars().next().unwrap();
-+ if is_whitespace(ch) {
-+ s = &s[ch.len_utf8()..];
-+ continue;
-+ }
-+ }
-+ }
-+ return s;
-+ }
-+ s
-+}
-+
-+fn is_whitespace(ch: char) -> bool {
-+ // Rust treats left-to-right mark and right-to-left mark as whitespace
-+ ch.is_whitespace() || ch == '\u{200e}' || ch == '\u{200f}'
-+}
-diff --git a/third_party/rust/syn/tests/.gitignore b/third_party/rust/syn/tests/.gitignore
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/tests/.gitignore
-@@ -0,0 +1,1 @@
-+/*.pending-snap
-diff --git a/third_party/rust/syn/tests/clone.sh b/third_party/rust/syn/tests/clone.sh
-deleted file mode 100755
---- a/third_party/rust/syn/tests/clone.sh
-+++ /dev/null
-@@ -1,16 +0,0 @@
--#!/bin/bash
--
--REV=4560cb830fce63fcffdc4558f4281aaac6a3a1ba
--
--set -euo pipefail
--cd "$(dirname "${BASH_SOURCE[0]}")"
--mkdir -p rust
--touch rust/COMMIT
--
--if [ "$(cat rust/COMMIT)" != "$REV" ]; then
-- rm -rf rust
-- mkdir rust
-- curl -L "https://github.com/rust-lang/rust/archive/${REV}.tar.gz" \
-- | tar xz --directory rust --strip-components 1
-- echo "$REV" > rust/COMMIT
--fi
-diff --git a/third_party/rust/syn/tests/common/eq.rs b/third_party/rust/syn/tests/common/eq.rs
---- a/third_party/rust/syn/tests/common/eq.rs
-+++ b/third_party/rust/syn/tests/common/eq.rs
-@@ -1,41 +1,40 @@
-+extern crate rustc_ast;
- extern crate rustc_data_structures;
-+extern crate rustc_span;
- extern crate rustc_target;
--extern crate syntax;
--extern crate syntax_pos;
-
- use std::mem;
-
--use self::rustc_data_structures::sync::Lrc;
--use self::rustc_data_structures::thin_vec::ThinVec;
--use self::rustc_target::abi::FloatTy;
--use self::rustc_target::spec::abi::Abi;
--use self::syntax::ast::{
-- AngleBracketedArgs, AnonConst, Arg, Arm, AsmDialect, AssocTyConstraint, AssocTyConstraintKind,
-- AttrId, AttrStyle, Attribute, BareFnTy, BinOpKind, BindingMode, Block, BlockCheckMode,
-- CaptureBy, Constness, Crate, CrateSugar, Defaultness, EnumDef, Expr, ExprKind, Field, FieldPat,
-- FnDecl, FnHeader, ForeignItem, ForeignItemKind, ForeignMod, FunctionRetTy, GenericArg,
-- GenericArgs, GenericBound, GenericParam, GenericParamKind, Generics, GlobalAsm, Ident,
-- ImplItem, ImplItemKind, ImplPolarity, InlineAsm, InlineAsmOutput, IntTy, IsAsync, IsAuto, Item,
-- ItemKind, Label, Lifetime, Lit, LitIntType, LitKind, Local, Mac, MacDelimiter, MacStmtStyle,
-- MacroDef, MethodSig, Mod, Movability, MutTy, Mutability, NodeId, ParenthesizedArgs, Pat,
-- PatKind, Path, PathSegment, PolyTraitRef, QSelf, RangeEnd, RangeLimits, RangeSyntax, Stmt,
-- StmtKind, StrStyle, StructField, TraitBoundModifier, TraitItem, TraitItemKind,
-- TraitObjectSyntax, TraitRef, Ty, TyKind, UintTy, UnOp, UnsafeSource, Unsafety, UseTree,
-- UseTreeKind, Variant, VariantData, VisibilityKind, WhereBoundPredicate, WhereClause,
-- WhereEqPredicate, WherePredicate, WhereRegionPredicate,
-+use rustc_ast::ast::{
-+ AngleBracketedArg, AngleBracketedArgs, AnonConst, Arm, AssocItemKind, AssocTyConstraint,
-+ AssocTyConstraintKind, Async, AttrId, AttrItem, AttrKind, AttrStyle, Attribute, BareFnTy,
-+ BinOpKind, BindingMode, Block, BlockCheckMode, BorrowKind, CaptureBy, Const, Crate, CrateSugar,
-+ Defaultness, EnumDef, Expr, ExprKind, Extern, Field, FieldPat, FloatTy, FnDecl, FnHeader,
-+ FnRetTy, FnSig, ForeignItemKind, ForeignMod, GenericArg, GenericArgs, GenericBound,
-+ GenericParam, GenericParamKind, Generics, GlobalAsm, ImplPolarity, InlineAsm, InlineAsmOperand,
-+ InlineAsmOptions, InlineAsmRegOrRegClass, InlineAsmTemplatePiece, IntTy, IsAuto, Item,
-+ ItemKind, Label, Lifetime, Lit, LitFloatType, LitIntType, LitKind, LlvmAsmDialect,
-+ LlvmInlineAsm, LlvmInlineAsmOutput, Local, MacArgs, MacCall, MacCallStmt, MacDelimiter,
-+ MacStmtStyle, MacroDef, Mod, Movability, MutTy, Mutability, NodeId, Param, ParenthesizedArgs,
-+ Pat, PatKind, Path, PathSegment, PolyTraitRef, QSelf, RangeEnd, RangeLimits, RangeSyntax, Stmt,
-+ StmtKind, StrLit, StrStyle, StructField, TraitBoundModifier, TraitObjectSyntax, TraitRef, Ty,
-+ TyKind, UintTy, UnOp, Unsafe, UnsafeSource, UseTree, UseTreeKind, Variant, VariantData,
-+ VisibilityKind, WhereBoundPredicate, WhereClause, WhereEqPredicate, WherePredicate,
-+ WhereRegionPredicate,
- };
--use self::syntax::parse::lexer::comments;
--use self::syntax::parse::token::{self, DelimToken, Token, TokenKind};
--use self::syntax::ptr::P;
--use self::syntax::source_map::Spanned;
--use self::syntax::symbol::{sym, Symbol};
--use self::syntax::tokenstream::{DelimSpan, TokenStream, TokenTree};
--use self::syntax_pos::{Span, SyntaxContext, DUMMY_SP};
-+use rustc_ast::ptr::P;
-+use rustc_ast::token::{self, CommentKind, DelimToken, Token, TokenKind};
-+use rustc_ast::tokenstream::{DelimSpan, TokenStream, TokenTree};
-+use rustc_data_structures::sync::Lrc;
-+use rustc_data_structures::thin_vec::ThinVec;
-+use rustc_span::source_map::Spanned;
-+use rustc_span::symbol::Ident;
-+use rustc_span::{Span, Symbol, SyntaxContext};
-
- pub trait SpanlessEq {
- fn eq(&self, other: &Self) -> bool;
- }
-
- impl<T: SpanlessEq> SpanlessEq for P<T> {
- fn eq(&self, other: &Self) -> bool {
- SpanlessEq::eq(&**self, &**other)
-@@ -81,24 +80,16 @@ impl<T: SpanlessEq> SpanlessEq for Spann
- }
-
- impl<A: SpanlessEq, B: SpanlessEq> SpanlessEq for (A, B) {
- fn eq(&self, other: &Self) -> bool {
- SpanlessEq::eq(&self.0, &other.0) && SpanlessEq::eq(&self.1, &other.1)
- }
- }
-
--impl<A: SpanlessEq, B: SpanlessEq, C: SpanlessEq> SpanlessEq for (A, B, C) {
-- fn eq(&self, other: &Self) -> bool {
-- SpanlessEq::eq(&self.0, &other.0)
-- && SpanlessEq::eq(&self.1, &other.1)
-- && SpanlessEq::eq(&self.2, &other.2)
-- }
--}
--
- macro_rules! spanless_eq_true {
- ($name:ident) => {
- impl SpanlessEq for $name {
- fn eq(&self, _other: &Self) -> bool {
- true
- }
- }
- };
-@@ -121,60 +112,62 @@ macro_rules! spanless_eq_partial_eq {
- }
-
- spanless_eq_partial_eq!(bool);
- spanless_eq_partial_eq!(u8);
- spanless_eq_partial_eq!(u16);
- spanless_eq_partial_eq!(u128);
- spanless_eq_partial_eq!(usize);
- spanless_eq_partial_eq!(char);
-+spanless_eq_partial_eq!(String);
- spanless_eq_partial_eq!(Symbol);
--spanless_eq_partial_eq!(Abi);
-+spanless_eq_partial_eq!(CommentKind);
- spanless_eq_partial_eq!(DelimToken);
-+spanless_eq_partial_eq!(InlineAsmOptions);
-
- macro_rules! spanless_eq_struct {
- {
-- $name:ident;
-+ $name:ident $(<$param:ident>)?;
- $([$field:ident $other:ident])*
- $(![$ignore:ident])*
- } => {
-- impl SpanlessEq for $name {
-+ impl $(<$param: SpanlessEq>)* SpanlessEq for $name $(<$param>)* {
- fn eq(&self, other: &Self) -> bool {
- let $name { $($field,)* $($ignore: _,)* } = self;
- let $name { $($field: $other,)* $($ignore: _,)* } = other;
- $(SpanlessEq::eq($field, $other))&&*
- }
- }
- };
-
- {
-- $name:ident;
-+ $name:ident $(<$param:ident>)?;
- $([$field:ident $other:ident])*
- $next:ident
- $($rest:ident)*
- $(!$ignore:ident)*
- } => {
- spanless_eq_struct! {
-- $name;
-+ $name $(<$param>)*;
- $([$field $other])*
- [$next other]
- $($rest)*
- $(!$ignore)*
- }
- };
-
- {
-- $name:ident;
-+ $name:ident $(<$param:ident>)?;
- $([$field:ident $other:ident])*
- $(![$ignore:ident])*
- !$next:ident
- $(!$rest:ident)*
- } => {
- spanless_eq_struct! {
-- $name;
-+ $name $(<$param>)*;
- $([$field $other])*
- $(![$ignore])*
- ![$next]
- $(!$rest)*
- }
- };
- }
-
-@@ -258,129 +251,141 @@ macro_rules! spanless_eq_enum {
- $name;
- $([$variant $($fields)*])*
- [$next]
- $($rest)*
- }
- };
- }
-
--spanless_eq_struct!(AngleBracketedArgs; span args constraints);
-+spanless_eq_struct!(AngleBracketedArgs; span args);
- spanless_eq_struct!(AnonConst; id value);
--spanless_eq_struct!(Arg; attrs ty pat id span);
--spanless_eq_struct!(Arm; attrs pats guard body span id);
-+spanless_eq_struct!(Arm; attrs pat guard body span id is_placeholder);
- spanless_eq_struct!(AssocTyConstraint; id ident kind span);
--spanless_eq_struct!(Attribute; id style path tokens span !is_sugared_doc);
--spanless_eq_struct!(BareFnTy; unsafety abi generic_params decl);
-+spanless_eq_struct!(AttrItem; path args);
-+spanless_eq_struct!(Attribute; kind id style span);
-+spanless_eq_struct!(BareFnTy; unsafety ext generic_params decl);
- spanless_eq_struct!(Block; stmts id rules span);
--spanless_eq_struct!(Crate; module attrs span);
-+spanless_eq_struct!(Crate; module attrs span proc_macros);
- spanless_eq_struct!(EnumDef; variants);
--spanless_eq_struct!(Expr; id node span attrs);
--spanless_eq_struct!(Field; ident expr span is_shorthand attrs id);
--spanless_eq_struct!(FieldPat; ident pat is_shorthand attrs id span);
--spanless_eq_struct!(FnDecl; inputs output c_variadic);
--spanless_eq_struct!(FnHeader; constness asyncness unsafety abi);
--spanless_eq_struct!(ForeignItem; ident attrs node id span vis);
-+spanless_eq_struct!(Expr; id kind span attrs !tokens);
-+spanless_eq_struct!(Field; attrs id span ident expr is_shorthand is_placeholder);
-+spanless_eq_struct!(FieldPat; ident pat is_shorthand attrs id span is_placeholder);
-+spanless_eq_struct!(FnDecl; inputs output);
-+spanless_eq_struct!(FnHeader; constness asyncness unsafety ext);
-+spanless_eq_struct!(FnSig; header decl span);
- spanless_eq_struct!(ForeignMod; abi items);
--spanless_eq_struct!(GenericParam; id ident attrs bounds kind);
-+spanless_eq_struct!(GenericParam; id ident attrs bounds is_placeholder kind);
- spanless_eq_struct!(Generics; params where_clause span);
- spanless_eq_struct!(GlobalAsm; asm);
--spanless_eq_struct!(ImplItem; id ident vis defaultness attrs generics node span !tokens);
--spanless_eq_struct!(InlineAsm; asm asm_str_style outputs inputs clobbers volatile alignstack dialect);
--spanless_eq_struct!(InlineAsmOutput; constraint expr is_rw is_indirect);
--spanless_eq_struct!(Item; ident attrs id node vis span !tokens);
-+spanless_eq_struct!(InlineAsm; template operands options line_spans);
-+spanless_eq_struct!(Item<K>; attrs id span vis ident kind !tokens);
- spanless_eq_struct!(Label; ident);
- spanless_eq_struct!(Lifetime; id ident);
--spanless_eq_struct!(Lit; token node span);
-+spanless_eq_struct!(Lit; token kind span);
-+spanless_eq_struct!(LlvmInlineAsm; asm asm_str_style outputs inputs clobbers volatile alignstack dialect);
-+spanless_eq_struct!(LlvmInlineAsmOutput; constraint expr is_rw is_indirect);
- spanless_eq_struct!(Local; pat ty init id span attrs);
--spanless_eq_struct!(Mac; path delim tts span prior_type_ascription);
--spanless_eq_struct!(MacroDef; tokens legacy);
--spanless_eq_struct!(MethodSig; header decl);
-+spanless_eq_struct!(MacCall; path args prior_type_ascription);
-+spanless_eq_struct!(MacCallStmt; mac style attrs);
-+spanless_eq_struct!(MacroDef; body macro_rules);
- spanless_eq_struct!(Mod; inner items inline);
- spanless_eq_struct!(MutTy; ty mutbl);
-+spanless_eq_struct!(Param; attrs ty pat id span is_placeholder);
- spanless_eq_struct!(ParenthesizedArgs; span inputs output);
--spanless_eq_struct!(Pat; id node span);
-+spanless_eq_struct!(Pat; id kind span tokens);
- spanless_eq_struct!(Path; span segments);
- spanless_eq_struct!(PathSegment; ident id args);
- spanless_eq_struct!(PolyTraitRef; bound_generic_params trait_ref span);
- spanless_eq_struct!(QSelf; ty path_span position);
--spanless_eq_struct!(Stmt; id node span);
--spanless_eq_struct!(StructField; span ident vis id ty attrs);
-+spanless_eq_struct!(Stmt; id kind span);
-+spanless_eq_struct!(StrLit; style symbol suffix span symbol_unescaped);
-+spanless_eq_struct!(StructField; attrs id span vis ident ty is_placeholder);
- spanless_eq_struct!(Token; kind span);
--spanless_eq_struct!(TraitItem; id ident attrs generics node span !tokens);
- spanless_eq_struct!(TraitRef; path ref_id);
--spanless_eq_struct!(Ty; id node span);
-+spanless_eq_struct!(Ty; id kind span);
- spanless_eq_struct!(UseTree; prefix kind span);
--spanless_eq_struct!(Variant; ident attrs id data disr_expr span);
-+spanless_eq_struct!(Variant; attrs id span vis ident data disr_expr is_placeholder);
- spanless_eq_struct!(WhereBoundPredicate; span bound_generic_params bounded_ty bounds);
--spanless_eq_struct!(WhereClause; predicates span);
-+spanless_eq_struct!(WhereClause; has_where_token predicates span);
- spanless_eq_struct!(WhereEqPredicate; id span lhs_ty rhs_ty);
- spanless_eq_struct!(WhereRegionPredicate; span lifetime bounds);
--spanless_eq_enum!(AsmDialect; Att Intel);
-+spanless_eq_enum!(AngleBracketedArg; Arg(0) Constraint(0));
-+spanless_eq_enum!(AssocItemKind; Const(0 1 2) Fn(0 1 2 3) TyAlias(0 1 2 3) MacCall(0));
- spanless_eq_enum!(AssocTyConstraintKind; Equality(ty) Bound(bounds));
-+spanless_eq_enum!(Async; Yes(span closure_id return_impl_trait_id) No);
-+spanless_eq_enum!(AttrKind; Normal(0) DocComment(0 1));
- spanless_eq_enum!(AttrStyle; Outer Inner);
- spanless_eq_enum!(BinOpKind; Add Sub Mul Div Rem And Or BitXor BitAnd BitOr Shl Shr Eq Lt Le Ne Ge Gt);
- spanless_eq_enum!(BindingMode; ByRef(0) ByValue(0));
- spanless_eq_enum!(BlockCheckMode; Default Unsafe(0));
-+spanless_eq_enum!(BorrowKind; Ref Raw);
- spanless_eq_enum!(CaptureBy; Value Ref);
--spanless_eq_enum!(Constness; Const NotConst);
-+spanless_eq_enum!(Const; Yes(0) No);
- spanless_eq_enum!(CrateSugar; PubCrate JustCrate);
--spanless_eq_enum!(Defaultness; Default Final);
-+spanless_eq_enum!(Defaultness; Default(0) Final);
-+spanless_eq_enum!(Extern; None Implicit Explicit(0));
- spanless_eq_enum!(FloatTy; F32 F64);
--spanless_eq_enum!(ForeignItemKind; Fn(0 1) Static(0 1) Ty Macro(0));
--spanless_eq_enum!(FunctionRetTy; Default(0) Ty(0));
-+spanless_eq_enum!(FnRetTy; Default(0) Ty(0));
-+spanless_eq_enum!(ForeignItemKind; Static(0 1 2) Fn(0 1 2 3) TyAlias(0 1 2 3) MacCall(0));
- spanless_eq_enum!(GenericArg; Lifetime(0) Type(0) Const(0));
- spanless_eq_enum!(GenericArgs; AngleBracketed(0) Parenthesized(0));
- spanless_eq_enum!(GenericBound; Trait(0 1) Outlives(0));
--spanless_eq_enum!(GenericParamKind; Lifetime Type(default) Const(ty));
--spanless_eq_enum!(ImplItemKind; Const(0 1) Method(0 1) TyAlias(0) OpaqueTy(0) Macro(0));
--spanless_eq_enum!(ImplPolarity; Positive Negative);
-+spanless_eq_enum!(GenericParamKind; Lifetime Type(default) Const(ty kw_span));
-+spanless_eq_enum!(ImplPolarity; Positive Negative(0));
-+spanless_eq_enum!(InlineAsmRegOrRegClass; Reg(0) RegClass(0));
-+spanless_eq_enum!(InlineAsmTemplatePiece; String(0) Placeholder(operand_idx modifier span));
- spanless_eq_enum!(IntTy; Isize I8 I16 I32 I64 I128);
--spanless_eq_enum!(IsAsync; Async(closure_id return_impl_trait_id) NotAsync);
- spanless_eq_enum!(IsAuto; Yes No);
-+spanless_eq_enum!(LitFloatType; Suffixed(0) Unsuffixed);
- spanless_eq_enum!(LitIntType; Signed(0) Unsigned(0) Unsuffixed);
-+spanless_eq_enum!(LlvmAsmDialect; Att Intel);
-+spanless_eq_enum!(MacArgs; Empty Delimited(0 1 2) Eq(0 1));
- spanless_eq_enum!(MacDelimiter; Parenthesis Bracket Brace);
- spanless_eq_enum!(MacStmtStyle; Semicolon Braces NoBraces);
- spanless_eq_enum!(Movability; Static Movable);
--spanless_eq_enum!(Mutability; Mutable Immutable);
-+spanless_eq_enum!(Mutability; Mut Not);
- spanless_eq_enum!(RangeEnd; Included(0) Excluded);
- spanless_eq_enum!(RangeLimits; HalfOpen Closed);
--spanless_eq_enum!(StmtKind; Local(0) Item(0) Expr(0) Semi(0) Mac(0));
-+spanless_eq_enum!(StmtKind; Local(0) Item(0) Expr(0) Semi(0) Empty MacCall(0));
- spanless_eq_enum!(StrStyle; Cooked Raw(0));
- spanless_eq_enum!(TokenTree; Token(0) Delimited(0 1 2));
--spanless_eq_enum!(TraitBoundModifier; None Maybe);
--spanless_eq_enum!(TraitItemKind; Const(0 1) Method(0 1) Type(0 1) Macro(0));
-+spanless_eq_enum!(TraitBoundModifier; None Maybe MaybeConst MaybeConstMaybe);
- spanless_eq_enum!(TraitObjectSyntax; Dyn None);
- spanless_eq_enum!(UintTy; Usize U8 U16 U32 U64 U128);
- spanless_eq_enum!(UnOp; Deref Not Neg);
-+spanless_eq_enum!(Unsafe; Yes(0) No);
- spanless_eq_enum!(UnsafeSource; CompilerGenerated UserProvided);
--spanless_eq_enum!(Unsafety; Unsafe Normal);
- spanless_eq_enum!(UseTreeKind; Simple(0 1 2) Nested(0) Glob);
- spanless_eq_enum!(VariantData; Struct(0 1) Tuple(0 1) Unit(0));
- spanless_eq_enum!(VisibilityKind; Public Crate(0) Restricted(path id) Inherited);
- spanless_eq_enum!(WherePredicate; BoundPredicate(0) RegionPredicate(0) EqPredicate(0));
--spanless_eq_enum!(ExprKind; Box(0) Array(0) Call(0 1) MethodCall(0 1) Tup(0)
-+spanless_eq_enum!(ExprKind; Box(0) Array(0) Call(0 1) MethodCall(0 1 2) Tup(0)
- Binary(0 1 2) Unary(0 1) Lit(0) Cast(0 1) Type(0 1) Let(0 1) If(0 1 2)
- While(0 1 2) ForLoop(0 1 2 3) Loop(0 1) Match(0 1) Closure(0 1 2 3 4 5)
-- Block(0 1) Async(0 1 2) Await(0) TryBlock(0) Assign(0 1) AssignOp(0 1 2)
-- Field(0 1) Index(0 1) Range(0 1 2) Path(0 1) AddrOf(0 1) Break(0 1)
-- Continue(0) Ret(0) InlineAsm(0) Mac(0) Struct(0 1 2) Repeat(0 1) Paren(0)
-- Try(0) Yield(0) Err);
--spanless_eq_enum!(ItemKind; ExternCrate(0) Use(0) Static(0 1 2) Const(0 1)
-- Fn(0 1 2 3) Mod(0) ForeignMod(0) GlobalAsm(0) TyAlias(0 1) OpaqueTy(0 1)
-- Enum(0 1) Struct(0 1) Union(0 1) Trait(0 1 2 3 4) TraitAlias(0 1)
-- Impl(0 1 2 3 4 5 6) Mac(0) MacroDef(0));
-+ Block(0 1) Async(0 1 2) Await(0) TryBlock(0) Assign(0 1 2) AssignOp(0 1 2)
-+ Field(0 1) Index(0 1) Range(0 1 2) Path(0 1) AddrOf(0 1 2) Break(0 1)
-+ Continue(0) Ret(0) InlineAsm(0) LlvmInlineAsm(0) MacCall(0) Struct(0 1 2)
-+ Repeat(0 1) Paren(0) Try(0) Yield(0) Err);
-+spanless_eq_enum!(InlineAsmOperand; In(reg expr) Out(reg late expr)
-+ InOut(reg late expr) SplitInOut(reg late in_expr out_expr) Const(expr)
-+ Sym(expr));
-+spanless_eq_enum!(ItemKind; ExternCrate(0) Use(0) Static(0 1 2) Const(0 1 2)
-+ Fn(0 1 2 3) Mod(0) ForeignMod(0) GlobalAsm(0) TyAlias(0 1 2 3) Enum(0 1)
-+ Struct(0 1) Union(0 1) Trait(0 1 2 3 4) TraitAlias(0 1)
-+ Impl(unsafety polarity defaultness constness generics of_trait self_ty items)
-+ MacCall(0) MacroDef(0));
- spanless_eq_enum!(LitKind; Str(0 1) ByteStr(0) Byte(0) Char(0) Int(0 1)
-- Float(0 1) FloatUnsuffixed(0) Bool(0) Err(0));
-+ Float(0 1) Bool(0) Err(0));
- spanless_eq_enum!(PatKind; Wild Ident(0 1 2) Struct(0 1 2) TupleStruct(0 1)
- Or(0) Path(0 1) Tuple(0) Box(0) Ref(0 1) Lit(0) Range(0 1 2) Slice(0) Rest
-- Paren(0) Mac(0));
-+ Paren(0) MacCall(0));
- spanless_eq_enum!(TyKind; Slice(0) Array(0 1) Ptr(0) Rptr(0 1) BareFn(0) Never
- Tup(0) Path(0 1) TraitObject(0 1) ImplTrait(0 1) Paren(0) Typeof(0) Infer
-- ImplicitSelf Mac(0) Err CVarArgs);
-+ ImplicitSelf MacCall(0) Err CVarArgs);
-
- impl SpanlessEq for Ident {
- fn eq(&self, other: &Self) -> bool {
- self.as_str() == other.as_str()
- }
- }
-
- // Give up on comparing literals inside of macros because there are so many
-@@ -409,49 +414,25 @@ impl SpanlessEq for TokenKind {
- },
- _ => self == other,
- }
- }
- }
-
- impl SpanlessEq for TokenStream {
- fn eq(&self, other: &Self) -> bool {
-- SpanlessEq::eq(&expand_tts(self), &expand_tts(other))
-+ let mut this = self.clone().into_trees();
-+ let mut other = other.clone().into_trees();
-+ loop {
-+ let this = match this.next() {
-+ None => return other.next().is_none(),
-+ Some(val) => val,
-+ };
-+ let other = match other.next() {
-+ None => return false,
-+ Some(val) => val,
-+ };
-+ if !SpanlessEq::eq(&this, &other) {
-+ return false;
-+ }
-+ }
- }
- }
--
--fn expand_tts(tts: &TokenStream) -> Vec<TokenTree> {
-- let mut tokens = Vec::new();
-- for tt in tts.clone().into_trees() {
-- let c = match tt {
-- TokenTree::Token(Token {
-- kind: TokenKind::DocComment(c),
-- ..
-- }) => c,
-- _ => {
-- tokens.push(tt);
-- continue;
-- }
-- };
-- let contents = comments::strip_doc_comment_decoration(&c.as_str());
-- let style = comments::doc_comment_style(&c.as_str());
-- tokens.push(TokenTree::token(TokenKind::Pound, DUMMY_SP));
-- if style == AttrStyle::Inner {
-- tokens.push(TokenTree::token(TokenKind::Not, DUMMY_SP));
-- }
-- let lit = token::Lit {
-- kind: token::LitKind::Str,
-- symbol: Symbol::intern(&contents),
-- suffix: None,
-- };
-- let tts = vec![
-- TokenTree::token(TokenKind::Ident(sym::doc, false), DUMMY_SP),
-- TokenTree::token(TokenKind::Eq, DUMMY_SP),
-- TokenTree::token(TokenKind::Literal(lit), DUMMY_SP),
-- ];
-- tokens.push(TokenTree::Delimited(
-- DelimSpan::dummy(),
-- DelimToken::Bracket,
-- tts.into_iter().collect::<TokenStream>().into(),
-- ));
-- }
-- tokens
--}
-diff --git a/third_party/rust/syn/tests/common/mod.rs b/third_party/rust/syn/tests/common/mod.rs
---- a/third_party/rust/syn/tests/common/mod.rs
-+++ b/third_party/rust/syn/tests/common/mod.rs
-@@ -1,14 +1,27 @@
- #![allow(dead_code)]
-
-+use rayon::ThreadPoolBuilder;
- use std::env;
-
- pub mod eq;
- pub mod parse;
-
- /// Read the `ABORT_AFTER_FAILURE` environment variable, and parse it.
- pub fn abort_after() -> usize {
- match env::var("ABORT_AFTER_FAILURE") {
- Ok(s) => s.parse().expect("failed to parse ABORT_AFTER_FAILURE"),
- Err(_) => usize::max_value(),
- }
- }
-+
-+/// Configure Rayon threadpool.
-+pub fn rayon_init() {
-+ let stack_size = match env::var("RUST_MIN_STACK") {
-+ Ok(s) => s.parse().expect("failed to parse RUST_MIN_STACK"),
-+ Err(_) => 20 * 1024 * 1024,
-+ };
-+ ThreadPoolBuilder::new()
-+ .stack_size(stack_size)
-+ .build_global()
-+ .unwrap();
-+}
-diff --git a/third_party/rust/syn/tests/common/parse.rs b/third_party/rust/syn/tests/common/parse.rs
---- a/third_party/rust/syn/tests/common/parse.rs
-+++ b/third_party/rust/syn/tests/common/parse.rs
-@@ -1,25 +1,25 @@
--extern crate proc_macro2;
--extern crate syn;
--extern crate syntax;
--extern crate syntax_pos;
-+extern crate rustc_ast;
-+extern crate rustc_expand;
-+extern crate rustc_parse as parse;
-+extern crate rustc_session;
-+extern crate rustc_span;
-
--use self::syntax::ast;
--use self::syntax::parse::{self, ParseSess};
--use self::syntax::ptr::P;
--use self::syntax::source_map::FilePathMapping;
--use self::syntax_pos::FileName;
-+use rustc_ast::ast;
-+use rustc_ast::ptr::P;
-+use rustc_session::parse::ParseSess;
-+use rustc_span::source_map::FilePathMapping;
-+use rustc_span::FileName;
-
- use std::panic;
-
--pub fn libsyntax_expr(input: &str) -> Option<P<ast::Expr>> {
-+pub fn librustc_expr(input: &str) -> Option<P<ast::Expr>> {
- match panic::catch_unwind(|| {
- let sess = ParseSess::new(FilePathMapping::empty());
-- sess.span_diagnostic.set_continue_after_error(false);
- let e = parse::new_parser_from_source_str(
- &sess,
- FileName::Custom("test_precedence".to_string()),
- input.to_string(),
- )
- .parse_expr();
- match e {
- Ok(expr) => Some(expr),
-@@ -27,17 +27,17 @@ pub fn libsyntax_expr(input: &str) -> Op
- diagnostic.emit();
- None
- }
- }
- }) {
- Ok(Some(e)) => Some(e),
- Ok(None) => None,
- Err(_) => {
-- errorf!("libsyntax panicked\n");
-+ errorf!("librustc panicked\n");
- None
- }
- }
- }
-
- pub fn syn_expr(input: &str) -> Option<syn::Expr> {
- match syn::parse_str(input) {
- Ok(e) => Some(e),
-diff --git a/third_party/rust/syn/tests/debug/gen.rs b/third_party/rust/syn/tests/debug/gen.rs
---- a/third_party/rust/syn/tests/debug/gen.rs
-+++ b/third_party/rust/syn/tests/debug/gen.rs
-@@ -1,13 +1,13 @@
- // This file is @generated by syn-internal-codegen.
- // It is not intended for manual editing.
-
- use super::{Lite, RefCast};
--use std::fmt::{self, Debug};
-+use std::fmt::{self, Debug, Display};
- impl Debug for Lite<syn::Abi> {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- let _val = &self.value;
- let mut formatter = formatter.debug_struct("Abi");
- if let Some(val) = &_val.name {
- #[derive(RefCast)]
- #[repr(transparent)]
- struct Print(syn::LitStr);
-@@ -1034,19 +1034,19 @@ impl Debug for Lite<syn::Expr> {
- if !_val.attrs.is_empty() {
- formatter.field("attrs", Lite(&_val.attrs));
- }
- formatter.field("block", Lite(&_val.block));
- formatter.finish()
- }
- syn::Expr::Verbatim(_val) => {
- formatter.write_str("Verbatim")?;
-- formatter.write_str("(")?;
-- Debug::fmt(Lite(_val), formatter)?;
-- formatter.write_str(")")?;
-+ formatter.write_str("(`")?;
-+ Display::fmt(_val, formatter)?;
-+ formatter.write_str("`)")?;
- Ok(())
- }
- syn::Expr::While(_val) => {
- let mut formatter = formatter.debug_struct("Expr::While");
- if !_val.attrs.is_empty() {
- formatter.field("attrs", Lite(&_val.attrs));
- }
- if let Some(val) = &_val.label {
-@@ -2111,19 +2111,19 @@ impl Debug for Lite<syn::ForeignItem> {
- }
- }
- formatter.field("semi_token", Print::ref_cast(val));
- }
- formatter.finish()
- }
- syn::ForeignItem::Verbatim(_val) => {
- formatter.write_str("Verbatim")?;
-- formatter.write_str("(")?;
-- Debug::fmt(Lite(_val), formatter)?;
-- formatter.write_str(")")?;
-+ formatter.write_str("(`")?;
-+ Display::fmt(_val, formatter)?;
-+ formatter.write_str("`)")?;
- Ok(())
- }
- _ => unreachable!(),
- }
- }
- }
- impl Debug for Lite<syn::ForeignItemFn> {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-@@ -2427,19 +2427,19 @@ impl Debug for Lite<syn::ImplItem> {
- }
- }
- formatter.field("semi_token", Print::ref_cast(val));
- }
- formatter.finish()
- }
- syn::ImplItem::Verbatim(_val) => {
- formatter.write_str("Verbatim")?;
-- formatter.write_str("(")?;
-- Debug::fmt(Lite(_val), formatter)?;
-- formatter.write_str(")")?;
-+ formatter.write_str("(`")?;
-+ Display::fmt(_val, formatter)?;
-+ formatter.write_str("`)")?;
- Ok(())
- }
- _ => unreachable!(),
- }
- }
- }
- impl Debug for Lite<syn::ImplItemConst> {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-@@ -2935,19 +2935,19 @@ impl Debug for Lite<syn::Item> {
- }
- formatter.field("leading_colon", Print::ref_cast(val));
- }
- formatter.field("tree", Lite(&_val.tree));
- formatter.finish()
- }
- syn::Item::Verbatim(_val) => {
- formatter.write_str("Verbatim")?;
-- formatter.write_str("(")?;
-- Debug::fmt(Lite(_val), formatter)?;
-- formatter.write_str(")")?;
-+ formatter.write_str("(`")?;
-+ Display::fmt(_val, formatter)?;
-+ formatter.write_str("`)")?;
- Ok(())
- }
- _ => unreachable!(),
- }
- }
- }
- impl Debug for Lite<syn::ItemConst> {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-@@ -3432,19 +3432,19 @@ impl Debug for Lite<syn::Lit> {
- syn::Lit::Float(_val) => write!(formatter, "{}", _val),
- syn::Lit::Bool(_val) => {
- let mut formatter = formatter.debug_struct("Lit::Bool");
- formatter.field("value", Lite(&_val.value));
- formatter.finish()
- }
- syn::Lit::Verbatim(_val) => {
- formatter.write_str("Verbatim")?;
-- formatter.write_str("(")?;
-- Debug::fmt(Lite(_val), formatter)?;
-- formatter.write_str(")")?;
-+ formatter.write_str("(`")?;
-+ Display::fmt(_val, formatter)?;
-+ formatter.write_str("`)")?;
- Ok(())
- }
- }
- }
- }
- impl Debug for Lite<syn::LitBool> {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- let _val = &self.value;
-@@ -3873,19 +3873,19 @@ impl Debug for Lite<syn::Pat> {
- formatter.field("attrs", Lite(&_val.attrs));
- }
- formatter.field("pat", Lite(&_val.pat));
- formatter.field("ty", Lite(&_val.ty));
- formatter.finish()
- }
- syn::Pat::Verbatim(_val) => {
- formatter.write_str("Verbatim")?;
-- formatter.write_str("(")?;
-- Debug::fmt(Lite(_val), formatter)?;
-- formatter.write_str(")")?;
-+ formatter.write_str("(`")?;
-+ Display::fmt(_val, formatter)?;
-+ formatter.write_str("`)")?;
- Ok(())
- }
- syn::Pat::Wild(_val) => {
- let mut formatter = formatter.debug_struct("Pat::Wild");
- if !_val.attrs.is_empty() {
- formatter.field("attrs", Lite(&_val.attrs));
- }
- formatter.finish()
-@@ -4669,19 +4669,19 @@ impl Debug for Lite<syn::TraitItem> {
- }
- }
- formatter.field("semi_token", Print::ref_cast(val));
- }
- formatter.finish()
- }
- syn::TraitItem::Verbatim(_val) => {
- formatter.write_str("Verbatim")?;
-- formatter.write_str("(")?;
-- Debug::fmt(Lite(_val), formatter)?;
-- formatter.write_str(")")?;
-+ formatter.write_str("(`")?;
-+ Display::fmt(_val, formatter)?;
-+ formatter.write_str("`)")?;
- Ok(())
- }
- _ => unreachable!(),
- }
- }
- }
- impl Debug for Lite<syn::TraitItemConst> {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-@@ -5035,19 +5035,19 @@ impl Debug for Lite<syn::Type> {
- let mut formatter = formatter.debug_struct("Type::Tuple");
- if !_val.elems.is_empty() {
- formatter.field("elems", Lite(&_val.elems));
- }
- formatter.finish()
- }
- syn::Type::Verbatim(_val) => {
- formatter.write_str("Verbatim")?;
-- formatter.write_str("(")?;
-- Debug::fmt(Lite(_val), formatter)?;
-- formatter.write_str(")")?;
-+ formatter.write_str("(`")?;
-+ Display::fmt(_val, formatter)?;
-+ formatter.write_str("`)")?;
- Ok(())
- }
- _ => unreachable!(),
- }
- }
- }
- impl Debug for Lite<syn::TypeArray> {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-diff --git a/third_party/rust/syn/tests/debug/mod.rs b/third_party/rust/syn/tests/debug/mod.rs
---- a/third_party/rust/syn/tests/debug/mod.rs
-+++ b/third_party/rust/syn/tests/debug/mod.rs
-@@ -1,15 +1,12 @@
--extern crate proc_macro2;
--extern crate ref_cast;
--
- mod gen;
-
--use self::proc_macro2::{Ident, Literal, TokenStream};
--use self::ref_cast::RefCast;
-+use proc_macro2::{Ident, Literal, TokenStream};
-+use ref_cast::RefCast;
- use std::fmt::{self, Debug};
- use std::ops::Deref;
- use syn::punctuated::Punctuated;
-
- #[derive(RefCast)]
- #[repr(transparent)]
- pub struct Lite<T: ?Sized> {
- value: T,
-@@ -61,17 +58,25 @@ impl Debug for Lite<Ident> {
- impl Debug for Lite<Literal> {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- write!(formatter, "{}", self.value)
- }
- }
-
- impl Debug for Lite<TokenStream> {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-- write!(formatter, "`{}`", self.value)
-+ let string = self.value.to_string();
-+ if string.len() <= 80 {
-+ write!(formatter, "TokenStream(`{}`)", self.value)
-+ } else {
-+ formatter
-+ .debug_tuple("TokenStream")
-+ .field(&format_args!("`{}`", string))
-+ .finish()
-+ }
- }
- }
-
- impl<'a, T> Debug for Lite<&'a T>
- where
- Lite<T>: Debug,
- {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-diff --git a/third_party/rust/syn/tests/features/error.rs b/third_party/rust/syn/tests/features/error.rs
-deleted file mode 100644
---- a/third_party/rust/syn/tests/features/error.rs
-+++ /dev/null
-@@ -1,1 +0,0 @@
--"Hello! You want: cargo test --release --all-features"
-diff --git a/third_party/rust/syn/tests/features/mod.rs b/third_party/rust/syn/tests/features/mod.rs
-deleted file mode 100644
---- a/third_party/rust/syn/tests/features/mod.rs
-+++ /dev/null
-@@ -1,22 +0,0 @@
--#[allow(unused_macros)]
--macro_rules! hide_from_rustfmt {
-- ($mod:item) => {
-- $mod
-- };
--}
--
--#[cfg(not(all(
-- feature = "derive",
-- feature = "full",
-- feature = "parsing",
-- feature = "printing",
-- feature = "visit",
-- feature = "visit-mut",
-- feature = "fold",
-- feature = "clone-impls",
-- feature = "extra-traits",
-- feature = "proc-macro",
--)))]
--hide_from_rustfmt! {
-- mod error;
--}
-diff --git a/third_party/rust/syn/tests/macros/mod.rs b/third_party/rust/syn/tests/macros/mod.rs
---- a/third_party/rust/syn/tests/macros/mod.rs
-+++ b/third_party/rust/syn/tests/macros/mod.rs
-@@ -1,10 +1,8 @@
--extern crate proc_macro2;
--
- #[path = "../debug/mod.rs"]
- pub mod debug;
-
- use syn;
- use syn::parse::{Parse, Result};
-
- #[macro_export]
- macro_rules! errorf {
-@@ -37,28 +35,28 @@ macro_rules! snapshot {
- };
- }
-
- #[macro_export]
- macro_rules! snapshot_impl {
- (($expr:ident) as $t:ty, @$snapshot:literal) => {
- let $expr = crate::macros::Tokens::parse::<$t>($expr).unwrap();
- let debug = crate::macros::debug::Lite(&$expr);
-- insta::assert_debug_snapshot_matches!(debug, @$snapshot);
-+ insta::assert_debug_snapshot!(debug, @$snapshot);
- };
- (($($expr:tt)*) as $t:ty, @$snapshot:literal) => {{
- let syntax_tree = crate::macros::Tokens::parse::<$t>($($expr)*).unwrap();
- let debug = crate::macros::debug::Lite(&syntax_tree);
-- insta::assert_debug_snapshot_matches!(debug, @$snapshot);
-+ insta::assert_debug_snapshot!(debug, @$snapshot);
- syntax_tree
- }};
- (($($expr:tt)*) , @$snapshot:literal) => {{
- let syntax_tree = $($expr)*;
- let debug = crate::macros::debug::Lite(&syntax_tree);
-- insta::assert_debug_snapshot_matches!(debug, @$snapshot);
-+ insta::assert_debug_snapshot!(debug, @$snapshot);
- syntax_tree
- }};
- (($($expr:tt)*) $next:tt $($rest:tt)*) => {
- snapshot_impl!(($($expr)* $next) $($rest)*)
- };
- }
-
- pub trait Tokens {
-diff --git a/third_party/rust/syn/tests/repo/mod.rs b/third_party/rust/syn/tests/repo/mod.rs
---- a/third_party/rust/syn/tests/repo/mod.rs
-+++ b/third_party/rust/syn/tests/repo/mod.rs
-@@ -1,60 +1,135 @@
--extern crate walkdir;
-+mod progress;
-+
-+use self::progress::Progress;
-+use anyhow::Result;
-+use flate2::read::GzDecoder;
-+use std::fs;
-+use std::path::Path;
-+use tar::Archive;
-+use walkdir::DirEntry;
-+
-+const REVISION: &str = "792c645ca7d11a8d254df307d019c5bf01445c37";
-+
-+#[rustfmt::skip]
-+static EXCLUDE: &[&str] = &[
-+ // Compile-fail expr parameter in const generic position: f::<1 + 2>()
-+ "test/ui/const-generics/const-expression-parameter.rs",
-
--use std::process::Command;
-+ // Deprecated anonymous parameter syntax in traits
-+ "test/ui/issues/issue-13105.rs",
-+ "test/ui/issues/issue-13775.rs",
-+ "test/ui/issues/issue-34074.rs",
-+ "test/ui/proc-macro/trait-fn-args-2015.rs",
-
--use self::walkdir::DirEntry;
-+ // Not actually test cases
-+ "test/rustdoc-ui/test-compile-fail2.rs",
-+ "test/rustdoc-ui/test-compile-fail3.rs",
-+ "test/ui/include-single-expr-helper.rs",
-+ "test/ui/include-single-expr-helper-1.rs",
-+ "test/ui/issues/auxiliary/issue-21146-inc.rs",
-+ "test/ui/json-bom-plus-crlf-multifile-aux.rs",
-+ "test/ui/lint/expansion-time-include.rs",
-+ "test/ui/macros/auxiliary/macro-comma-support.rs",
-+ "test/ui/macros/auxiliary/macro-include-items-expr.rs",
-+];
-
- pub fn base_dir_filter(entry: &DirEntry) -> bool {
- let path = entry.path();
- if path.is_dir() {
- return true; // otherwise walkdir does not visit the files
- }
- if path.extension().map(|e| e != "rs").unwrap_or(true) {
- return false;
- }
-- let path_string = path.to_string_lossy();
-- let path_string = if cfg!(windows) {
-- path_string.replace('\\', "/").into()
-+
-+ let mut path_string = path.to_string_lossy();
-+ if cfg!(windows) {
-+ path_string = path_string.replace('\\', "/").into();
-+ }
-+ let path = if let Some(path) = path_string.strip_prefix("tests/rust/src/") {
-+ path
-+ } else if let Some(path) = path_string.strip_prefix("tests/rust/library/") {
-+ path
- } else {
-- path_string
-+ panic!("unexpected path in Rust dist: {}", path_string);
- };
-+
- // TODO assert that parsing fails on the parse-fail cases
-- if path_string.starts_with("tests/rust/src/test/parse-fail")
-- || path_string.starts_with("tests/rust/src/test/compile-fail")
-- || path_string.starts_with("tests/rust/src/test/rustfix")
-+ if path.starts_with("test/parse-fail")
-+ || path.starts_with("test/compile-fail")
-+ || path.starts_with("test/rustfix")
- {
- return false;
- }
-
-- if path_string.starts_with("tests/rust/src/test/ui") {
-- let stderr_path = path.with_extension("stderr");
-+ if path.starts_with("test/ui") {
-+ let stderr_path = entry.path().with_extension("stderr");
- if stderr_path.exists() {
- // Expected to fail in some way
- return false;
- }
- }
-
-- match path_string.as_ref() {
-- // Deprecated placement syntax
-- "tests/rust/src/test/ui/obsolete-in-place/bad.rs" |
-- // Deprecated anonymous parameter syntax in traits
-- "tests/rust/src/test/ui/error-codes/e0119/auxiliary/issue-23563-a.rs" |
-- "tests/rust/src/test/ui/issues/issue-13105.rs" |
-- "tests/rust/src/test/ui/issues/issue-13775.rs" |
-- "tests/rust/src/test/ui/issues/issue-34074.rs" |
-- // Deprecated await macro syntax
-- "tests/rust/src/test/ui/async-await/await-macro.rs" |
-- // 2015-style dyn that libsyntax rejects
-- "tests/rust/src/test/ui/dyn-keyword/dyn-2015-no-warnings-without-lints.rs" |
-- // not actually test cases
-- "tests/rust/src/test/ui/macros/auxiliary/macro-comma-support.rs" |
-- "tests/rust/src/test/ui/macros/auxiliary/macro-include-items-expr.rs" |
-- "tests/rust/src/test/ui/issues/auxiliary/issue-21146-inc.rs" => false,
-- _ => true,
-+ !EXCLUDE.contains(&path)
-+}
-+
-+#[allow(dead_code)]
-+pub fn edition(path: &Path) -> &'static str {
-+ if path.ends_with("dyn-2015-no-warnings-without-lints.rs") {
-+ "2015"
-+ } else {
-+ "2018"
- }
- }
-
- pub fn clone_rust() {
-- let result = Command::new("tests/clone.sh").status().unwrap();
-- assert!(result.success());
-+ let needs_clone = match fs::read_to_string("tests/rust/COMMIT") {
-+ Err(_) => true,
-+ Ok(contents) => contents.trim() != REVISION,
-+ };
-+ if needs_clone {
-+ download_and_unpack().unwrap();
-+ }
-+ let mut missing = String::new();
-+ let test_src = Path::new("tests/rust/src");
-+ for exclude in EXCLUDE {
-+ if !test_src.join(exclude).exists() {
-+ missing += "\ntests/rust/src/";
-+ missing += exclude;
-+ }
-+ }
-+ if !missing.is_empty() {
-+ panic!("excluded test file does not exist:{}\n", missing);
-+ }
- }
-+
-+fn download_and_unpack() -> Result<()> {
-+ let url = format!(
-+ "https://github.com/rust-lang/rust/archive/{}.tar.gz",
-+ REVISION
-+ );
-+ let response = reqwest::blocking::get(&url)?.error_for_status()?;
-+ let progress = Progress::new(response);
-+ let decoder = GzDecoder::new(progress);
-+ let mut archive = Archive::new(decoder);
-+ let prefix = format!("rust-{}", REVISION);
-+
-+ let tests_rust = Path::new("tests/rust");
-+ if tests_rust.exists() {
-+ fs::remove_dir_all(tests_rust)?;
-+ }
-+
-+ for entry in archive.entries()? {
-+ let mut entry = entry?;
-+ let path = entry.path()?;
-+ if path == Path::new("pax_global_header") {
-+ continue;
-+ }
-+ let relative = path.strip_prefix(&prefix)?;
-+ let out = tests_rust.join(relative);
-+ entry.unpack(&out)?;
-+ }
-+
-+ fs::write("tests/rust/COMMIT", REVISION)?;
-+ Ok(())
-+}
-diff --git a/third_party/rust/syn/tests/repo/progress.rs b/third_party/rust/syn/tests/repo/progress.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/tests/repo/progress.rs
-@@ -0,0 +1,37 @@
-+use std::io::{Read, Result};
-+use std::time::{Duration, Instant};
-+
-+pub struct Progress<R> {
-+ bytes: usize,
-+ tick: Instant,
-+ stream: R,
-+}
-+
-+impl<R> Progress<R> {
-+ pub fn new(stream: R) -> Self {
-+ Progress {
-+ bytes: 0,
-+ tick: Instant::now() + Duration::from_millis(2000),
-+ stream,
-+ }
-+ }
-+}
-+
-+impl<R: Read> Read for Progress<R> {
-+ fn read(&mut self, buf: &mut [u8]) -> Result<usize> {
-+ let num = self.stream.read(buf)?;
-+ self.bytes += num;
-+ let now = Instant::now();
-+ if now > self.tick {
-+ self.tick = now + Duration::from_millis(500);
-+ errorf!("downloading... {} bytes\n", self.bytes);
-+ }
-+ Ok(num)
-+ }
-+}
-+
-+impl<R> Drop for Progress<R> {
-+ fn drop(&mut self) {
-+ errorf!("done ({} bytes)\n", self.bytes);
-+ }
-+}
-diff --git a/third_party/rust/syn/tests/test_asyncness.rs b/third_party/rust/syn/tests/test_asyncness.rs
---- a/third_party/rust/syn/tests/test_asyncness.rs
-+++ b/third_party/rust/syn/tests/test_asyncness.rs
-@@ -1,41 +1,37 @@
--extern crate syn;
--
--mod features;
--
- #[macro_use]
- mod macros;
-
- use syn::{Expr, Item};
-
- #[test]
- fn test_async_fn() {
- let input = "async fn process() {}";
-
- snapshot!(input as Item, @r###"
-- ⋮Item::Fn {
-- ⋮ vis: Inherited,
-- ⋮ sig: Signature {
-- ⋮ asyncness: Some,
-- ⋮ ident: "process",
-- ⋮ generics: Generics,
-- ⋮ output: Default,
-- ⋮ },
-- ⋮ block: Block,
-- ⋮}
-+ Item::Fn {
-+ vis: Inherited,
-+ sig: Signature {
-+ asyncness: Some,
-+ ident: "process",
-+ generics: Generics,
-+ output: Default,
-+ },
-+ block: Block,
-+ }
- "###);
- }
-
- #[test]
- fn test_async_closure() {
- let input = "async || {}";
-
- snapshot!(input as Expr, @r###"
-- ⋮Expr::Closure {
-- ⋮ asyncness: Some,
-- ⋮ output: Default,
-- ⋮ body: Expr::Block {
-- ⋮ block: Block,
-- ⋮ },
-- ⋮}
-+ Expr::Closure {
-+ asyncness: Some,
-+ output: Default,
-+ body: Expr::Block {
-+ block: Block,
-+ },
-+ }
- "###);
- }
-diff --git a/third_party/rust/syn/tests/test_attribute.rs b/third_party/rust/syn/tests/test_attribute.rs
---- a/third_party/rust/syn/tests/test_attribute.rs
-+++ b/third_party/rust/syn/tests/test_attribute.rs
-@@ -1,295 +1,333 @@
--extern crate syn;
--
--mod features;
--
- #[macro_use]
- mod macros;
-
- use syn::parse::Parser;
- use syn::{Attribute, Meta};
-
- #[test]
- fn test_meta_item_word() {
- let meta = test("#[foo]");
-
- snapshot!(meta, @r###"
-- ⋮Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮})
-+ Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ })
- "###);
- }
-
- #[test]
- fn test_meta_item_name_value() {
- let meta = test("#[foo = 5]");
-
- snapshot!(meta, @r###"
-- ⋮Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 5,
-- ⋮}
-+ Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 5,
-+ }
- "###);
- }
-
- #[test]
- fn test_meta_item_bool_value() {
- let meta = test("#[foo = true]");
-
- snapshot!(meta, @r###"
-- ⋮Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: Lit::Bool {
-- ⋮ value: true,
-- ⋮ },
-- ⋮}
-+ Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: Lit::Bool {
-+ value: true,
-+ },
-+ }
- "###);
-
- let meta = test("#[foo = false]");
-
- snapshot!(meta, @r###"
-- ⋮Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: Lit::Bool {
-- ⋮ value: false,
-- ⋮ },
-- ⋮}
-+ Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: Lit::Bool {
-+ value: false,
-+ },
-+ }
- "###);
- }
-
- #[test]
- fn test_meta_item_list_lit() {
- let meta = test("#[foo(5)]");
-
- snapshot!(meta, @r###"
-- ⋮Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Lit(5),
-- ⋮ ],
-- ⋮}
-+ Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Lit(5),
-+ ],
-+ }
- "###);
- }
-
- #[test]
- fn test_meta_item_list_word() {
- let meta = test("#[foo(bar)]");
-
- snapshot!(meta, @r###"
-- ⋮Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Meta(Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "bar",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ })),
-- ⋮ ],
-- ⋮}
-+ Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Meta(Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "bar",
-+ arguments: None,
-+ },
-+ ],
-+ })),
-+ ],
-+ }
- "###);
- }
-
- #[test]
- fn test_meta_item_list_name_value() {
- let meta = test("#[foo(bar = 5)]");
-
- snapshot!(meta, @r###"
-- ⋮Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Meta(Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "bar",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 5,
-- ⋮ }),
-- ⋮ ],
-- ⋮}
-+ Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Meta(Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "bar",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 5,
-+ }),
-+ ],
-+ }
- "###);
- }
-
- #[test]
- fn test_meta_item_list_bool_value() {
- let meta = test("#[foo(bar = true)]");
-
- snapshot!(meta, @r###"
-- ⋮Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Meta(Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "bar",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: Lit::Bool {
-- ⋮ value: true,
-- ⋮ },
-- ⋮ }),
-- ⋮ ],
-- ⋮}
-+ Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Meta(Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "bar",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: Lit::Bool {
-+ value: true,
-+ },
-+ }),
-+ ],
-+ }
- "###);
- }
-
- #[test]
- fn test_meta_item_multiple() {
- let meta = test("#[foo(word, name = 5, list(name2 = 6), word2)]");
-
- snapshot!(meta, @r###"
-- ⋮Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Meta(Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "word",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ })),
-- ⋮ Meta(Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "name",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 5,
-- ⋮ }),
-- ⋮ Meta(Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "list",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Meta(Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "name2",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 6,
-- ⋮ }),
-- ⋮ ],
-- ⋮ }),
-- ⋮ Meta(Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "word2",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ })),
-- ⋮ ],
-- ⋮}
-+ Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Meta(Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "word",
-+ arguments: None,
-+ },
-+ ],
-+ })),
-+ Meta(Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "name",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 5,
-+ }),
-+ Meta(Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "list",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Meta(Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "name2",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 6,
-+ }),
-+ ],
-+ }),
-+ Meta(Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "word2",
-+ arguments: None,
-+ },
-+ ],
-+ })),
-+ ],
-+ }
- "###);
- }
-
- #[test]
- fn test_bool_lit() {
- let meta = test("#[foo(true)]");
-
- snapshot!(meta, @r###"
-- ⋮Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Lit(Lit::Bool {
-- ⋮ value: true,
-- ⋮ }),
-- ⋮ ],
-- ⋮}
-+ Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Lit(Lit::Bool {
-+ value: true,
-+ }),
-+ ],
-+ }
-+ "###);
-+}
-+
-+#[test]
-+fn test_negative_lit() {
-+ let meta = test("#[form(min = -1, max = 200)]");
-+
-+ snapshot!(meta, @r###"
-+ Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "form",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Meta(Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "min",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: -1,
-+ }),
-+ Meta(Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "max",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 200,
-+ }),
-+ ],
-+ }
- "###);
- }
-
- fn test(input: &str) -> Meta {
- let attrs = Attribute::parse_outer.parse_str(input).unwrap();
-
- assert_eq!(attrs.len(), 1);
- let attr = attrs.into_iter().next().unwrap();
-diff --git a/third_party/rust/syn/tests/test_derive_input.rs b/third_party/rust/syn/tests/test_derive_input.rs
---- a/third_party/rust/syn/tests/test_derive_input.rs
-+++ b/third_party/rust/syn/tests/test_derive_input.rs
-@@ -1,201 +1,196 @@
--extern crate quote;
--extern crate syn;
--
--mod features;
--
- #[macro_use]
- mod macros;
-
- use quote::quote;
- use syn::{Data, DeriveInput};
-
- #[test]
- fn test_unit() {
- let input = quote! {
- struct Unit;
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ vis: Inherited,
-- ⋮ ident: "Unit",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Unit,
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ vis: Inherited,
-+ ident: "Unit",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Unit,
-+ semi_token: Some,
-+ },
-+ }
- "###);
- }
-
- #[test]
- fn test_struct() {
- let input = quote! {
- #[derive(Debug, Clone)]
- pub struct Item {
- pub ident: Ident,
- pub attrs: Vec<Attribute>
- }
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ attrs: [
-- ⋮ Attribute {
-- ⋮ style: Outer,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "derive",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ tokens: `( Debug , Clone )`,
-- ⋮ },
-- ⋮ ],
-- ⋮ vis: Visibility::Public,
-- ⋮ ident: "Item",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Fields::Named {
-- ⋮ named: [
-- ⋮ Field {
-- ⋮ vis: Visibility::Public,
-- ⋮ ident: Some("ident"),
-- ⋮ colon_token: Some,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "Ident",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ Field {
-- ⋮ vis: Visibility::Public,
-- ⋮ ident: Some("attrs"),
-- ⋮ colon_token: Some,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "Vec",
-- ⋮ arguments: PathArguments::AngleBracketed {
-- ⋮ args: [
-- ⋮ Type(Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "Attribute",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ }),
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ attrs: [
-+ Attribute {
-+ style: Outer,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "derive",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ tokens: TokenStream(`(Debug , Clone)`),
-+ },
-+ ],
-+ vis: Visibility::Public,
-+ ident: "Item",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Fields::Named {
-+ named: [
-+ Field {
-+ vis: Visibility::Public,
-+ ident: Some("ident"),
-+ colon_token: Some,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "Ident",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ Field {
-+ vis: Visibility::Public,
-+ ident: Some("attrs"),
-+ colon_token: Some,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "Vec",
-+ arguments: PathArguments::AngleBracketed {
-+ args: [
-+ Type(Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "Attribute",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ }),
-+ ],
-+ },
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ ],
-+ },
-+ },
-+ }
- "###);
-
- snapshot!(input.attrs[0].parse_meta().unwrap(), @r###"
-- ⋮Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "derive",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Meta(Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "Debug",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ })),
-- ⋮ Meta(Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "Clone",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ })),
-- ⋮ ],
-- ⋮}
-+ Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "derive",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Meta(Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "Debug",
-+ arguments: None,
-+ },
-+ ],
-+ })),
-+ Meta(Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "Clone",
-+ arguments: None,
-+ },
-+ ],
-+ })),
-+ ],
-+ }
- "###);
- }
-
- #[test]
- fn test_union() {
- let input = quote! {
- union MaybeUninit<T> {
- uninit: (),
- value: T
- }
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ vis: Inherited,
-- ⋮ ident: "MaybeUninit",
-- ⋮ generics: Generics {
-- ⋮ lt_token: Some,
-- ⋮ params: [
-- ⋮ Type(TypeParam {
-- ⋮ ident: "T",
-- ⋮ }),
-- ⋮ ],
-- ⋮ gt_token: Some,
-- ⋮ },
-- ⋮ data: Data::Union {
-- ⋮ fields: FieldsNamed {
-- ⋮ named: [
-- ⋮ Field {
-- ⋮ vis: Inherited,
-- ⋮ ident: Some("uninit"),
-- ⋮ colon_token: Some,
-- ⋮ ty: Type::Tuple,
-- ⋮ },
-- ⋮ Field {
-- ⋮ vis: Inherited,
-- ⋮ ident: Some("value"),
-- ⋮ colon_token: Some,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "T",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ vis: Inherited,
-+ ident: "MaybeUninit",
-+ generics: Generics {
-+ lt_token: Some,
-+ params: [
-+ Type(TypeParam {
-+ ident: "T",
-+ }),
-+ ],
-+ gt_token: Some,
-+ },
-+ data: Data::Union {
-+ fields: FieldsNamed {
-+ named: [
-+ Field {
-+ vis: Inherited,
-+ ident: Some("uninit"),
-+ colon_token: Some,
-+ ty: Type::Tuple,
-+ },
-+ Field {
-+ vis: Inherited,
-+ ident: Some("value"),
-+ colon_token: Some,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "T",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ ],
-+ },
-+ },
-+ }
- "###);
- }
-
- #[test]
- #[cfg(feature = "full")]
- fn test_enum() {
- let input = quote! {
- /// See the std::result module documentation for details.
-@@ -207,472 +202,472 @@ fn test_enum() {
-
- // Smuggling data into a proc_macro_derive,
- // in the style of https://github.com/dtolnay/proc-macro-hack
- ProcMacroHack = (0, "data").0
- }
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ attrs: [
-- ⋮ Attribute {
-- ⋮ style: Outer,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "doc",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ tokens: `= r" See the std::result module documentation for details."`,
-- ⋮ },
-- ⋮ Attribute {
-- ⋮ style: Outer,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "must_use",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ tokens: ``,
-- ⋮ },
-- ⋮ ],
-- ⋮ vis: Visibility::Public,
-- ⋮ ident: "Result",
-- ⋮ generics: Generics {
-- ⋮ lt_token: Some,
-- ⋮ params: [
-- ⋮ Type(TypeParam {
-- ⋮ ident: "T",
-- ⋮ }),
-- ⋮ Type(TypeParam {
-- ⋮ ident: "E",
-- ⋮ }),
-- ⋮ ],
-- ⋮ gt_token: Some,
-- ⋮ },
-- ⋮ data: Data::Enum {
-- ⋮ variants: [
-- ⋮ Variant {
-- ⋮ ident: "Ok",
-- ⋮ fields: Fields::Unnamed {
-- ⋮ unnamed: [
-- ⋮ Field {
-- ⋮ vis: Inherited,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "T",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ Variant {
-- ⋮ ident: "Err",
-- ⋮ fields: Fields::Unnamed {
-- ⋮ unnamed: [
-- ⋮ Field {
-- ⋮ vis: Inherited,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "E",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ Variant {
-- ⋮ ident: "Surprise",
-- ⋮ fields: Unit,
-- ⋮ discriminant: Some(Expr::Lit {
-- ⋮ lit: 0isize,
-- ⋮ }),
-- ⋮ },
-- ⋮ Variant {
-- ⋮ ident: "ProcMacroHack",
-- ⋮ fields: Unit,
-- ⋮ discriminant: Some(Expr::Field {
-- ⋮ base: Expr::Tuple {
-- ⋮ elems: [
-- ⋮ Expr::Lit {
-- ⋮ lit: 0,
-- ⋮ },
-- ⋮ Expr::Lit {
-- ⋮ lit: "data",
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ member: Unnamed(Index {
-- ⋮ index: 0,
-- ⋮ }),
-- ⋮ }),
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ attrs: [
-+ Attribute {
-+ style: Outer,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "doc",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ tokens: TokenStream(`= r" See the std::result module documentation for details."`),
-+ },
-+ Attribute {
-+ style: Outer,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "must_use",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ tokens: TokenStream(``),
-+ },
-+ ],
-+ vis: Visibility::Public,
-+ ident: "Result",
-+ generics: Generics {
-+ lt_token: Some,
-+ params: [
-+ Type(TypeParam {
-+ ident: "T",
-+ }),
-+ Type(TypeParam {
-+ ident: "E",
-+ }),
-+ ],
-+ gt_token: Some,
-+ },
-+ data: Data::Enum {
-+ variants: [
-+ Variant {
-+ ident: "Ok",
-+ fields: Fields::Unnamed {
-+ unnamed: [
-+ Field {
-+ vis: Inherited,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "T",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ ],
-+ },
-+ },
-+ Variant {
-+ ident: "Err",
-+ fields: Fields::Unnamed {
-+ unnamed: [
-+ Field {
-+ vis: Inherited,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "E",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ ],
-+ },
-+ },
-+ Variant {
-+ ident: "Surprise",
-+ fields: Unit,
-+ discriminant: Some(Expr::Lit {
-+ lit: 0isize,
-+ }),
-+ },
-+ Variant {
-+ ident: "ProcMacroHack",
-+ fields: Unit,
-+ discriminant: Some(Expr::Field {
-+ base: Expr::Tuple {
-+ elems: [
-+ Expr::Lit {
-+ lit: 0,
-+ },
-+ Expr::Lit {
-+ lit: "data",
-+ },
-+ ],
-+ },
-+ member: Unnamed(Index {
-+ index: 0,
-+ }),
-+ }),
-+ },
-+ ],
-+ },
-+ }
- "###);
-
- let meta_items: Vec<_> = input
- .attrs
- .into_iter()
- .map(|attr| attr.parse_meta().unwrap())
- .collect();
-
- snapshot!(meta_items, @r###"
-- ⋮[
-- ⋮ Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "doc",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: " See the std::result module documentation for details.",
-- ⋮ },
-- ⋮ Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "must_use",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ }),
-- ⋮]
-+ [
-+ Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "doc",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: " See the std::result module documentation for details.",
-+ },
-+ Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "must_use",
-+ arguments: None,
-+ },
-+ ],
-+ }),
-+ ]
- "###);
- }
-
- #[test]
- fn test_attr_with_path() {
- let input = quote! {
- #[::attr_args::identity
- fn main() { assert_eq!(foo(), "Hello, world!"); }]
- struct Dummy;
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ attrs: [
-- ⋮ Attribute {
-- ⋮ style: Outer,
-- ⋮ path: Path {
-- ⋮ leading_colon: Some,
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "attr_args",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ PathSegment {
-- ⋮ ident: "identity",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ tokens: `fn main ( ) { assert_eq ! ( foo ( ) , "Hello, world!" ) ; }`,
-- ⋮ },
-- ⋮ ],
-- ⋮ vis: Inherited,
-- ⋮ ident: "Dummy",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Unit,
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ attrs: [
-+ Attribute {
-+ style: Outer,
-+ path: Path {
-+ leading_colon: Some,
-+ segments: [
-+ PathSegment {
-+ ident: "attr_args",
-+ arguments: None,
-+ },
-+ PathSegment {
-+ ident: "identity",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ tokens: TokenStream(`fn main () { assert_eq ! (foo () , "Hello, world!") ; }`),
-+ },
-+ ],
-+ vis: Inherited,
-+ ident: "Dummy",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Unit,
-+ semi_token: Some,
-+ },
-+ }
- "###);
-
- assert!(input.attrs[0].parse_meta().is_err());
- }
-
- #[test]
- fn test_attr_with_non_mod_style_path() {
- let input = quote! {
- #[inert <T>]
- struct S;
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ attrs: [
-- ⋮ Attribute {
-- ⋮ style: Outer,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "inert",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ tokens: `< T >`,
-- ⋮ },
-- ⋮ ],
-- ⋮ vis: Inherited,
-- ⋮ ident: "S",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Unit,
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ attrs: [
-+ Attribute {
-+ style: Outer,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "inert",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ tokens: TokenStream(`< T >`),
-+ },
-+ ],
-+ vis: Inherited,
-+ ident: "S",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Unit,
-+ semi_token: Some,
-+ },
-+ }
- "###);
-
- assert!(input.attrs[0].parse_meta().is_err());
- }
-
- #[test]
- fn test_attr_with_mod_style_path_with_self() {
- let input = quote! {
- #[foo::self]
- struct S;
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ attrs: [
-- ⋮ Attribute {
-- ⋮ style: Outer,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ PathSegment {
-- ⋮ ident: "self",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ tokens: ``,
-- ⋮ },
-- ⋮ ],
-- ⋮ vis: Inherited,
-- ⋮ ident: "S",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Unit,
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ attrs: [
-+ Attribute {
-+ style: Outer,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ PathSegment {
-+ ident: "self",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ tokens: TokenStream(``),
-+ },
-+ ],
-+ vis: Inherited,
-+ ident: "S",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Unit,
-+ semi_token: Some,
-+ },
-+ }
- "###);
-
- snapshot!(input.attrs[0].parse_meta().unwrap(), @r###"
-- ⋮Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ PathSegment {
-- ⋮ ident: "self",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮})
-+ Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ PathSegment {
-+ ident: "self",
-+ arguments: None,
-+ },
-+ ],
-+ })
- "###);
- }
-
- #[test]
- fn test_pub_restricted() {
- // Taken from tests/rust/src/test/ui/resolve/auxiliary/privacy-struct-ctor.rs
- let input = quote! {
- pub(in m) struct Z(pub(in m::n) u8);
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ vis: Visibility::Restricted {
-- ⋮ in_token: Some,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "m",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ ident: "Z",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Fields::Unnamed {
-- ⋮ unnamed: [
-- ⋮ Field {
-- ⋮ vis: Visibility::Restricted {
-- ⋮ in_token: Some,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "m",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ PathSegment {
-- ⋮ ident: "n",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "u8",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ vis: Visibility::Restricted {
-+ in_token: Some,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "m",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ ident: "Z",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Fields::Unnamed {
-+ unnamed: [
-+ Field {
-+ vis: Visibility::Restricted {
-+ in_token: Some,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "m",
-+ arguments: None,
-+ },
-+ PathSegment {
-+ ident: "n",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "u8",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ ],
-+ },
-+ semi_token: Some,
-+ },
-+ }
- "###);
- }
-
- #[test]
- fn test_vis_crate() {
- let input = quote! {
- crate struct S;
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ vis: Visibility::Crate,
-- ⋮ ident: "S",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Unit,
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ vis: Visibility::Crate,
-+ ident: "S",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Unit,
-+ semi_token: Some,
-+ },
-+ }
- "###);
- }
-
- #[test]
- fn test_pub_restricted_crate() {
- let input = quote! {
- pub(crate) struct S;
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ vis: Visibility::Restricted {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "crate",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ ident: "S",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Unit,
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ vis: Visibility::Restricted {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "crate",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ ident: "S",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Unit,
-+ semi_token: Some,
-+ },
-+ }
- "###);
- }
-
- #[test]
- fn test_pub_restricted_super() {
- let input = quote! {
- pub(super) struct S;
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ vis: Visibility::Restricted {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "super",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ ident: "S",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Unit,
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ vis: Visibility::Restricted {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "super",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ ident: "S",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Unit,
-+ semi_token: Some,
-+ },
-+ }
- "###);
- }
-
- #[test]
- fn test_pub_restricted_in_super() {
- let input = quote! {
- pub(in super) struct S;
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ vis: Visibility::Restricted {
-- ⋮ in_token: Some,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "super",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ ident: "S",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Unit,
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ vis: Visibility::Restricted {
-+ in_token: Some,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "super",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ ident: "S",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Unit,
-+ semi_token: Some,
-+ },
-+ }
- "###);
- }
-
- #[test]
- fn test_fields_on_unit_struct() {
- let input = quote! {
- struct S;
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ vis: Inherited,
-- ⋮ ident: "S",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Unit,
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ vis: Inherited,
-+ ident: "S",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Unit,
-+ semi_token: Some,
-+ },
-+ }
- "###);
-
- let data = match input.data {
- Data::Struct(data) => data,
- _ => panic!("expected a struct"),
- };
-
- assert_eq!(0, data.fields.iter().count());
-@@ -683,215 +678,215 @@ fn test_fields_on_named_struct() {
- let input = quote! {
- struct S {
- foo: i32,
- pub bar: String,
- }
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ vis: Inherited,
-- ⋮ ident: "S",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Fields::Named {
-- ⋮ named: [
-- ⋮ Field {
-- ⋮ vis: Inherited,
-- ⋮ ident: Some("foo"),
-- ⋮ colon_token: Some,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "i32",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ Field {
-- ⋮ vis: Visibility::Public,
-- ⋮ ident: Some("bar"),
-- ⋮ colon_token: Some,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "String",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ vis: Inherited,
-+ ident: "S",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Fields::Named {
-+ named: [
-+ Field {
-+ vis: Inherited,
-+ ident: Some("foo"),
-+ colon_token: Some,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "i32",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ Field {
-+ vis: Visibility::Public,
-+ ident: Some("bar"),
-+ colon_token: Some,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "String",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ ],
-+ },
-+ },
-+ }
- "###);
-
- let data = match input.data {
- Data::Struct(data) => data,
- _ => panic!("expected a struct"),
- };
-
- snapshot!(data.fields.into_iter().collect::<Vec<_>>(), @r###"
-- ⋮[
-- ⋮ Field {
-- ⋮ vis: Inherited,
-- ⋮ ident: Some("foo"),
-- ⋮ colon_token: Some,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "i32",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ Field {
-- ⋮ vis: Visibility::Public,
-- ⋮ ident: Some("bar"),
-- ⋮ colon_token: Some,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "String",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮]
-+ [
-+ Field {
-+ vis: Inherited,
-+ ident: Some("foo"),
-+ colon_token: Some,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "i32",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ Field {
-+ vis: Visibility::Public,
-+ ident: Some("bar"),
-+ colon_token: Some,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "String",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ ]
- "###);
- }
-
- #[test]
- fn test_fields_on_tuple_struct() {
- let input = quote! {
- struct S(i32, pub String);
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ vis: Inherited,
-- ⋮ ident: "S",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Fields::Unnamed {
-- ⋮ unnamed: [
-- ⋮ Field {
-- ⋮ vis: Inherited,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "i32",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ Field {
-- ⋮ vis: Visibility::Public,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "String",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ vis: Inherited,
-+ ident: "S",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Fields::Unnamed {
-+ unnamed: [
-+ Field {
-+ vis: Inherited,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "i32",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ Field {
-+ vis: Visibility::Public,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "String",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ ],
-+ },
-+ semi_token: Some,
-+ },
-+ }
- "###);
-
- let data = match input.data {
- Data::Struct(data) => data,
- _ => panic!("expected a struct"),
- };
-
- snapshot!(data.fields.iter().collect::<Vec<_>>(), @r###"
-- ⋮[
-- ⋮ Field {
-- ⋮ vis: Inherited,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "i32",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ Field {
-- ⋮ vis: Visibility::Public,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "String",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮]
-+ [
-+ Field {
-+ vis: Inherited,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "i32",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ Field {
-+ vis: Visibility::Public,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "String",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ ]
- "###);
- }
-
- #[test]
- fn test_ambiguous_crate() {
- let input = quote! {
- // The field type is `(crate::X)` not `crate (::X)`.
- struct S(crate::X);
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ vis: Inherited,
-- ⋮ ident: "S",
-- ⋮ generics: Generics,
-- ⋮ data: Data::Struct {
-- ⋮ fields: Fields::Unnamed {
-- ⋮ unnamed: [
-- ⋮ Field {
-- ⋮ vis: Inherited,
-- ⋮ ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "crate",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ PathSegment {
-- ⋮ ident: "X",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ vis: Inherited,
-+ ident: "S",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Fields::Unnamed {
-+ unnamed: [
-+ Field {
-+ vis: Inherited,
-+ ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "crate",
-+ arguments: None,
-+ },
-+ PathSegment {
-+ ident: "X",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ ],
-+ },
-+ semi_token: Some,
-+ },
-+ }
- "###);
- }
-diff --git a/third_party/rust/syn/tests/test_expr.rs b/third_party/rust/syn/tests/test_expr.rs
---- a/third_party/rust/syn/tests/test_expr.rs
-+++ b/third_party/rust/syn/tests/test_expr.rs
-@@ -1,40 +1,302 @@
--extern crate proc_macro2;
--extern crate syn;
--
- #[macro_use]
- mod macros;
-
--use std::str::FromStr;
--
--use proc_macro2::TokenStream;
-+use proc_macro2::{Delimiter, Group, Ident, Punct, Spacing, Span, TokenStream, TokenTree};
-+use quote::quote;
-+use std::iter::FromIterator;
- use syn::{Expr, ExprRange};
-
- #[test]
- fn test_expr_parse() {
-- let code = "..100u32";
-- let tt = TokenStream::from_str(code).unwrap();
-- let expr: Expr = syn::parse2(tt.clone()).unwrap();
-- let expr_range: ExprRange = syn::parse2(tt).unwrap();
-- assert_eq!(expr, Expr::Range(expr_range));
-+ let tokens = quote!(..100u32);
-+ snapshot!(tokens as Expr, @r###"
-+ Expr::Range {
-+ limits: HalfOpen,
-+ to: Some(Expr::Lit {
-+ lit: 100u32,
-+ }),
-+ }
-+ "###);
-+
-+ let tokens = quote!(..100u32);
-+ snapshot!(tokens as ExprRange, @r###"
-+ ExprRange {
-+ limits: HalfOpen,
-+ to: Some(Expr::Lit {
-+ lit: 100u32,
-+ }),
-+ }
-+ "###);
- }
-
- #[test]
- fn test_await() {
- // Must not parse as Expr::Field.
-- let expr = syn::parse_str::<Expr>("fut.await").unwrap();
-+ let tokens = quote!(fut.await);
-
-- snapshot!(expr, @r###"
-- ⋮Expr::Await {
-- ⋮ base: Expr::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "fut",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮}
-+ snapshot!(tokens as Expr, @r###"
-+ Expr::Await {
-+ base: Expr::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "fut",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ }
- "###);
- }
-+
-+#[rustfmt::skip]
-+#[test]
-+fn test_tuple_multi_index() {
-+ for &input in &[
-+ "tuple.0.0",
-+ "tuple .0.0",
-+ "tuple. 0.0",
-+ "tuple.0 .0",
-+ "tuple.0. 0",
-+ "tuple . 0 . 0",
-+ ] {
-+ snapshot!(input as Expr, @r###"
-+ Expr::Field {
-+ base: Expr::Field {
-+ base: Expr::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "tuple",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ member: Unnamed(Index {
-+ index: 0,
-+ }),
-+ },
-+ member: Unnamed(Index {
-+ index: 0,
-+ }),
-+ }
-+ "###);
-+ }
-+
-+ for tokens in vec![
-+ quote!(tuple.0.0),
-+ quote!(tuple .0.0),
-+ quote!(tuple. 0.0),
-+ quote!(tuple.0 .0),
-+ quote!(tuple.0. 0),
-+ quote!(tuple . 0 . 0),
-+ ] {
-+ snapshot!(tokens as Expr, @r###"
-+ Expr::Field {
-+ base: Expr::Field {
-+ base: Expr::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "tuple",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ member: Unnamed(Index {
-+ index: 0,
-+ }),
-+ },
-+ member: Unnamed(Index {
-+ index: 0,
-+ }),
-+ }
-+ "###);
-+ }
-+}
-+
-+#[test]
-+fn test_macro_variable_func() {
-+ // mimics the token stream corresponding to `$fn()`
-+ let tokens = TokenStream::from_iter(vec![
-+ TokenTree::Group(Group::new(Delimiter::None, quote! { f })),
-+ TokenTree::Group(Group::new(Delimiter::Parenthesis, TokenStream::new())),
-+ ]);
-+
-+ snapshot!(tokens as Expr, @r###"
-+ Expr::Call {
-+ func: Expr::Group {
-+ expr: Expr::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "f",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ }
-+ "###);
-+
-+ let tokens = TokenStream::from_iter(vec![
-+ TokenTree::Punct(Punct::new('#', Spacing::Alone)),
-+ TokenTree::Group(Group::new(Delimiter::Bracket, quote! { outside })),
-+ TokenTree::Group(Group::new(Delimiter::None, quote! { #[inside] f })),
-+ TokenTree::Group(Group::new(Delimiter::Parenthesis, TokenStream::new())),
-+ ]);
-+
-+ snapshot!(tokens as Expr, @r###"
-+ Expr::Call {
-+ attrs: [
-+ Attribute {
-+ style: Outer,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "outside",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ tokens: TokenStream(``),
-+ },
-+ ],
-+ func: Expr::Group {
-+ expr: Expr::Path {
-+ attrs: [
-+ Attribute {
-+ style: Outer,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "inside",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ tokens: TokenStream(``),
-+ },
-+ ],
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "f",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ }
-+ "###);
-+}
-+
-+#[test]
-+fn test_macro_variable_macro() {
-+ // mimics the token stream corresponding to `$macro!()`
-+ let tokens = TokenStream::from_iter(vec![
-+ TokenTree::Group(Group::new(Delimiter::None, quote! { m })),
-+ TokenTree::Punct(Punct::new('!', Spacing::Alone)),
-+ TokenTree::Group(Group::new(Delimiter::Parenthesis, TokenStream::new())),
-+ ]);
-+
-+ snapshot!(tokens as Expr, @r###"
-+ Expr::Macro {
-+ mac: Macro {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "m",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ delimiter: Paren,
-+ tokens: TokenStream(``),
-+ },
-+ }
-+ "###);
-+}
-+
-+#[test]
-+fn test_macro_variable_struct() {
-+ // mimics the token stream corresponding to `$struct {}`
-+ let tokens = TokenStream::from_iter(vec![
-+ TokenTree::Group(Group::new(Delimiter::None, quote! { S })),
-+ TokenTree::Group(Group::new(Delimiter::Brace, TokenStream::new())),
-+ ]);
-+
-+ snapshot!(tokens as Expr, @r###"
-+ Expr::Struct {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "S",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ }
-+ "###);
-+}
-+
-+#[test]
-+fn test_macro_variable_match_arm() {
-+ // mimics the token stream corresponding to `match v { _ => $expr }`
-+ let tokens = TokenStream::from_iter(vec![
-+ TokenTree::Ident(Ident::new("match", Span::call_site())),
-+ TokenTree::Ident(Ident::new("v", Span::call_site())),
-+ TokenTree::Group(Group::new(
-+ Delimiter::Brace,
-+ TokenStream::from_iter(vec![
-+ TokenTree::Punct(Punct::new('_', Spacing::Alone)),
-+ TokenTree::Punct(Punct::new('=', Spacing::Joint)),
-+ TokenTree::Punct(Punct::new('>', Spacing::Alone)),
-+ TokenTree::Group(Group::new(Delimiter::None, quote! { #[a] () })),
-+ ]),
-+ )),
-+ ]);
-+
-+ snapshot!(tokens as Expr, @r###"
-+ Expr::Match {
-+ expr: Expr::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "v",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ arms: [
-+ Arm {
-+ pat: Pat::Wild,
-+ body: Expr::Group {
-+ expr: Expr::Tuple {
-+ attrs: [
-+ Attribute {
-+ style: Outer,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "a",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ tokens: TokenStream(``),
-+ },
-+ ],
-+ },
-+ },
-+ },
-+ ],
-+ }
-+ "###);
-+}
-diff --git a/third_party/rust/syn/tests/test_generics.rs b/third_party/rust/syn/tests/test_generics.rs
---- a/third_party/rust/syn/tests/test_generics.rs
-+++ b/third_party/rust/syn/tests/test_generics.rs
-@@ -1,110 +1,105 @@
--extern crate quote;
--extern crate syn;
--
--mod features;
--
- #[macro_use]
- mod macros;
-
- use quote::quote;
- use syn::{DeriveInput, ItemFn, TypeParamBound, WhereClause, WherePredicate};
-
- #[test]
- fn test_split_for_impl() {
- let input = quote! {
- struct S<'a, 'b: 'a, #[may_dangle] T: 'a = ()> where T: Debug;
- };
-
- snapshot!(input as DeriveInput, @r###"
-- ⋮DeriveInput {
-- ⋮ vis: Inherited,
-- ⋮ ident: "S",
-- ⋮ generics: Generics {
-- ⋮ lt_token: Some,
-- ⋮ params: [
-- ⋮ Lifetime(LifetimeDef {
-- ⋮ lifetime: Lifetime {
-- ⋮ ident: "a",
-- ⋮ },
-- ⋮ }),
-- ⋮ Lifetime(LifetimeDef {
-- ⋮ lifetime: Lifetime {
-- ⋮ ident: "b",
-- ⋮ },
-- ⋮ colon_token: Some,
-- ⋮ bounds: [
-- ⋮ Lifetime {
-- ⋮ ident: "a",
-- ⋮ },
-- ⋮ ],
-- ⋮ }),
-- ⋮ Type(TypeParam {
-- ⋮ attrs: [
-- ⋮ Attribute {
-- ⋮ style: Outer,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "may_dangle",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ tokens: ``,
-- ⋮ },
-- ⋮ ],
-- ⋮ ident: "T",
-- ⋮ colon_token: Some,
-- ⋮ bounds: [
-- ⋮ Lifetime(Lifetime {
-- ⋮ ident: "a",
-- ⋮ }),
-- ⋮ ],
-- ⋮ eq_token: Some,
-- ⋮ default: Some(Type::Tuple),
-- ⋮ }),
-- ⋮ ],
-- ⋮ gt_token: Some,
-- ⋮ where_clause: Some(WhereClause {
-- ⋮ predicates: [
-- ⋮ Type(PredicateType {
-- ⋮ bounded_ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "T",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ bounds: [
-- ⋮ Trait(TraitBound {
-- ⋮ modifier: None,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "Debug",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ }),
-- ⋮ ],
-- ⋮ }),
-- ⋮ ],
-- ⋮ }),
-- ⋮ },
-- ⋮ data: Data::Struct {
-- ⋮ fields: Unit,
-- ⋮ semi_token: Some,
-- ⋮ },
-- ⋮}
-+ DeriveInput {
-+ vis: Inherited,
-+ ident: "S",
-+ generics: Generics {
-+ lt_token: Some,
-+ params: [
-+ Lifetime(LifetimeDef {
-+ lifetime: Lifetime {
-+ ident: "a",
-+ },
-+ }),
-+ Lifetime(LifetimeDef {
-+ lifetime: Lifetime {
-+ ident: "b",
-+ },
-+ colon_token: Some,
-+ bounds: [
-+ Lifetime {
-+ ident: "a",
-+ },
-+ ],
-+ }),
-+ Type(TypeParam {
-+ attrs: [
-+ Attribute {
-+ style: Outer,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "may_dangle",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ tokens: TokenStream(``),
-+ },
-+ ],
-+ ident: "T",
-+ colon_token: Some,
-+ bounds: [
-+ Lifetime(Lifetime {
-+ ident: "a",
-+ }),
-+ ],
-+ eq_token: Some,
-+ default: Some(Type::Tuple),
-+ }),
-+ ],
-+ gt_token: Some,
-+ where_clause: Some(WhereClause {
-+ predicates: [
-+ Type(PredicateType {
-+ bounded_ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "T",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ bounds: [
-+ Trait(TraitBound {
-+ modifier: None,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "Debug",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ }),
-+ ],
-+ }),
-+ ],
-+ }),
-+ },
-+ data: Data::Struct {
-+ fields: Unit,
-+ semi_token: Some,
-+ },
-+ }
- "###);
-
- let generics = input.generics;
- let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
-
- let generated = quote! {
- impl #impl_generics MyTrait for Test #ty_generics #where_clause {}
- };
-@@ -126,156 +121,156 @@ fn test_split_for_impl() {
- };
- assert_eq!(generated.to_string(), expected.to_string());
- }
-
- #[test]
- fn test_ty_param_bound() {
- let tokens = quote!('a);
- snapshot!(tokens as TypeParamBound, @r###"
-- ⋮Lifetime(Lifetime {
-- ⋮ ident: "a",
-- ⋮})
-+ Lifetime(Lifetime {
-+ ident: "a",
-+ })
- "###);
-
- let tokens = quote!('_);
- snapshot!(tokens as TypeParamBound, @r###"
-- ⋮Lifetime(Lifetime {
-- ⋮ ident: "_",
-- ⋮})
-+ Lifetime(Lifetime {
-+ ident: "_",
-+ })
- "###);
-
- let tokens = quote!(Debug);
- snapshot!(tokens as TypeParamBound, @r###"
-- ⋮Trait(TraitBound {
-- ⋮ modifier: None,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "Debug",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮})
-+ Trait(TraitBound {
-+ modifier: None,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "Debug",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ })
- "###);
-
- let tokens = quote!(?Sized);
- snapshot!(tokens as TypeParamBound, @r###"
-- ⋮Trait(TraitBound {
-- ⋮ modifier: Maybe,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "Sized",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮})
-+ Trait(TraitBound {
-+ modifier: Maybe,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "Sized",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ })
- "###);
- }
-
- #[test]
- fn test_fn_precedence_in_where_clause() {
- // This should parse as two separate bounds, `FnOnce() -> i32` and `Send` - not
- // `FnOnce() -> (i32 + Send)`.
- let input = quote! {
- fn f<G>()
- where
- G: FnOnce() -> i32 + Send,
- {
- }
- };
-
- snapshot!(input as ItemFn, @r###"
-- ⋮ItemFn {
-- ⋮ vis: Inherited,
-- ⋮ sig: Signature {
-- ⋮ ident: "f",
-- ⋮ generics: Generics {
-- ⋮ lt_token: Some,
-- ⋮ params: [
-- ⋮ Type(TypeParam {
-- ⋮ ident: "G",
-- ⋮ }),
-- ⋮ ],
-- ⋮ gt_token: Some,
-- ⋮ where_clause: Some(WhereClause {
-- ⋮ predicates: [
-- ⋮ Type(PredicateType {
-- ⋮ bounded_ty: Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "G",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ bounds: [
-- ⋮ Trait(TraitBound {
-- ⋮ modifier: None,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "FnOnce",
-- ⋮ arguments: PathArguments::Parenthesized {
-- ⋮ output: Type(
-- ⋮ Type::Path {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "i32",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ },
-- ⋮ ),
-- ⋮ },
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ }),
-- ⋮ Trait(TraitBound {
-- ⋮ modifier: None,
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "Send",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ }),
-- ⋮ ],
-- ⋮ }),
-- ⋮ ],
-- ⋮ }),
-- ⋮ },
-- ⋮ output: Default,
-- ⋮ },
-- ⋮ block: Block,
-- ⋮}
-+ ItemFn {
-+ vis: Inherited,
-+ sig: Signature {
-+ ident: "f",
-+ generics: Generics {
-+ lt_token: Some,
-+ params: [
-+ Type(TypeParam {
-+ ident: "G",
-+ }),
-+ ],
-+ gt_token: Some,
-+ where_clause: Some(WhereClause {
-+ predicates: [
-+ Type(PredicateType {
-+ bounded_ty: Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "G",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ bounds: [
-+ Trait(TraitBound {
-+ modifier: None,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "FnOnce",
-+ arguments: PathArguments::Parenthesized {
-+ output: Type(
-+ Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "i32",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ ),
-+ },
-+ },
-+ ],
-+ },
-+ }),
-+ Trait(TraitBound {
-+ modifier: None,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "Send",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ }),
-+ ],
-+ }),
-+ ],
-+ }),
-+ },
-+ output: Default,
-+ },
-+ block: Block,
-+ }
- "###);
-
- let where_clause = input.sig.generics.where_clause.as_ref().unwrap();
- assert_eq!(where_clause.predicates.len(), 1);
-
- let predicate = match &where_clause.predicates[0] {
- WherePredicate::Type(pred) => pred,
- _ => panic!("wrong predicate kind"),
- };
-
- assert_eq!(predicate.bounds.len(), 2, "{:#?}", predicate.bounds);
-
- let first_bound = &predicate.bounds[0];
-- assert_eq!(quote!(#first_bound).to_string(), "FnOnce ( ) -> i32");
-+ assert_eq!(quote!(#first_bound).to_string(), "FnOnce () -> i32");
-
- let second_bound = &predicate.bounds[1];
- assert_eq!(quote!(#second_bound).to_string(), "Send");
- }
-
- #[test]
- fn test_where_clause_at_end_of_input() {
- let input = quote! {
-diff --git a/third_party/rust/syn/tests/test_grouping.rs b/third_party/rust/syn/tests/test_grouping.rs
---- a/third_party/rust/syn/tests/test_grouping.rs
-+++ b/third_party/rust/syn/tests/test_grouping.rs
-@@ -1,13 +1,8 @@
--extern crate proc_macro2;
--extern crate syn;
--
--mod features;
--
- #[macro_use]
- mod macros;
-
- use proc_macro2::{Delimiter, Group, Literal, Punct, Spacing, TokenStream, TokenTree};
- use syn::Expr;
-
- use std::iter::FromIterator;
-
-@@ -23,36 +18,36 @@ fn test_grouping() {
- TokenTree::Punct(Punct::new('+', Spacing::Alone)),
- TokenTree::Literal(Literal::i32_suffixed(3)),
- ]),
- )),
- TokenTree::Punct(Punct::new('*', Spacing::Alone)),
- TokenTree::Literal(Literal::i32_suffixed(4)),
- ]);
-
-- assert_eq!(tokens.to_string(), "1i32 + 2i32 + 3i32 * 4i32");
-+ assert_eq!(tokens.to_string(), "1i32 + 2i32 + 3i32 * 4i32");
-
- snapshot!(tokens as Expr, @r###"
-- ⋮Expr::Binary {
-- ⋮ left: Expr::Lit {
-- ⋮ lit: 1i32,
-- ⋮ },
-- ⋮ op: Add,
-- ⋮ right: Expr::Binary {
-- ⋮ left: Expr::Group {
-- ⋮ expr: Expr::Binary {
-- ⋮ left: Expr::Lit {
-- ⋮ lit: 2i32,
-- ⋮ },
-- ⋮ op: Add,
-- ⋮ right: Expr::Lit {
-- ⋮ lit: 3i32,
-- ⋮ },
-- ⋮ },
-- ⋮ },
-- ⋮ op: Mul,
-- ⋮ right: Expr::Lit {
-- ⋮ lit: 4i32,
-- ⋮ },
-- ⋮ },
-- ⋮}
-+ Expr::Binary {
-+ left: Expr::Lit {
-+ lit: 1i32,
-+ },
-+ op: Add,
-+ right: Expr::Binary {
-+ left: Expr::Group {
-+ expr: Expr::Binary {
-+ left: Expr::Lit {
-+ lit: 2i32,
-+ },
-+ op: Add,
-+ right: Expr::Lit {
-+ lit: 3i32,
-+ },
-+ },
-+ },
-+ op: Mul,
-+ right: Expr::Lit {
-+ lit: 4i32,
-+ },
-+ },
-+ }
- "###);
- }
-diff --git a/third_party/rust/syn/tests/test_ident.rs b/third_party/rust/syn/tests/test_ident.rs
---- a/third_party/rust/syn/tests/test_ident.rs
-+++ b/third_party/rust/syn/tests/test_ident.rs
-@@ -1,13 +1,8 @@
--extern crate proc_macro2;
--extern crate syn;
--
--mod features;
--
- use proc_macro2::{Ident, Span, TokenStream};
- use std::str::FromStr;
- use syn::Result;
-
- fn parse(s: &str) -> Result<Ident> {
- syn::parse2(TokenStream::from_str(s).unwrap())
- }
-
-diff --git a/third_party/rust/syn/tests/test_item.rs b/third_party/rust/syn/tests/test_item.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/tests/test_item.rs
-@@ -0,0 +1,45 @@
-+#[macro_use]
-+mod macros;
-+
-+use proc_macro2::{Delimiter, Group, Ident, Span, TokenStream, TokenTree};
-+use quote::quote;
-+use std::iter::FromIterator;
-+use syn::Item;
-+
-+#[test]
-+fn test_macro_variable_attr() {
-+ // mimics the token stream corresponding to `$attr fn f() {}`
-+ let tokens = TokenStream::from_iter(vec![
-+ TokenTree::Group(Group::new(Delimiter::None, quote! { #[test] })),
-+ TokenTree::Ident(Ident::new("fn", Span::call_site())),
-+ TokenTree::Ident(Ident::new("f", Span::call_site())),
-+ TokenTree::Group(Group::new(Delimiter::Parenthesis, TokenStream::new())),
-+ TokenTree::Group(Group::new(Delimiter::Brace, TokenStream::new())),
-+ ]);
-+
-+ snapshot!(tokens as Item, @r###"
-+ Item::Fn {
-+ attrs: [
-+ Attribute {
-+ style: Outer,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "test",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ tokens: TokenStream(``),
-+ },
-+ ],
-+ vis: Inherited,
-+ sig: Signature {
-+ ident: "f",
-+ generics: Generics,
-+ output: Default,
-+ },
-+ block: Block,
-+ }
-+ "###);
-+}
-diff --git a/third_party/rust/syn/tests/test_iterators.rs b/third_party/rust/syn/tests/test_iterators.rs
---- a/third_party/rust/syn/tests/test_iterators.rs
-+++ b/third_party/rust/syn/tests/test_iterators.rs
-@@ -1,15 +1,10 @@
- use syn::punctuated::{Pair, Punctuated};
--
--extern crate quote;
--#[macro_use]
--extern crate syn;
--
--mod features;
-+use syn::Token;
-
- #[macro_use]
- mod macros;
-
- macro_rules! check_exact_size_iterator {
- ($iter:expr) => {{
- let iter = $iter;
- let size_hint = iter.size_hint();
-diff --git a/third_party/rust/syn/tests/test_lit.rs b/third_party/rust/syn/tests/test_lit.rs
---- a/third_party/rust/syn/tests/test_lit.rs
-+++ b/third_party/rust/syn/tests/test_lit.rs
-@@ -1,18 +1,16 @@
--extern crate proc_macro2;
--extern crate quote;
--extern crate syn;
-+#[macro_use]
-+mod macros;
-
--mod features;
--
--use proc_macro2::{TokenStream, TokenTree};
-+use proc_macro2::{Delimiter, Group, Literal, Span, TokenStream, TokenTree};
- use quote::ToTokens;
-+use std::iter::FromIterator;
- use std::str::FromStr;
--use syn::Lit;
-+use syn::{Lit, LitFloat, LitInt};
-
- fn lit(s: &str) -> Lit {
- match TokenStream::from_str(s)
- .unwrap()
- .into_iter()
- .next()
- .unwrap()
- {
-@@ -45,16 +43,19 @@ fn strings() {
- test_string("\"'\"", "'");
- test_string("\"\"", "");
- test_string("\"\\u{1F415}\"", "\u{1F415}");
- test_string(
- "\"contains\nnewlines\\\nescaped newlines\"",
- "contains\nnewlinesescaped newlines",
- );
- test_string("r\"raw\nstring\\\nhere\"", "raw\nstring\\\nhere");
-+ test_string("\"...\"q", "...");
-+ test_string("r\"...\"q", "...");
-+ test_string("r##\"...\"##q", "...");
- }
-
- #[test]
- fn byte_strings() {
- fn test_byte_string(s: &str, value: &[u8]) {
- match lit(s) {
- Lit::ByteStr(lit) => {
- assert_eq!(lit.value(), value);
-@@ -74,16 +75,19 @@ fn byte_strings() {
- test_byte_string("b\"\\\"\"", b"\"");
- test_byte_string("b\"'\"", b"'");
- test_byte_string("b\"\"", b"");
- test_byte_string(
- "b\"contains\nnewlines\\\nescaped newlines\"",
- b"contains\nnewlinesescaped newlines",
- );
- test_byte_string("br\"raw\nstring\\\nhere\"", b"raw\nstring\\\nhere");
-+ test_byte_string("b\"...\"q", b"...");
-+ test_byte_string("br\"...\"q", b"...");
-+ test_byte_string("br##\"...\"##q", b"...");
- }
-
- #[test]
- fn bytes() {
- fn test_byte(s: &str, value: u8) {
- match lit(s) {
- Lit::Byte(lit) => {
- assert_eq!(lit.value(), value);
-@@ -95,16 +99,17 @@ fn bytes() {
- }
-
- test_byte("b'a'", b'a');
- test_byte("b'\\n'", b'\n');
- test_byte("b'\\r'", b'\r');
- test_byte("b'\\t'", b'\t');
- test_byte("b'\\''", b'\'');
- test_byte("b'\"'", b'"');
-+ test_byte("b'a'q", b'a');
- }
-
- #[test]
- fn chars() {
- fn test_char(s: &str, value: char) {
- match lit(s) {
- Lit::Char(lit) => {
- assert_eq!(lit.value(), value);
-@@ -120,16 +125,17 @@ fn chars() {
- test_char("'a'", 'a');
- test_char("'\\n'", '\n');
- test_char("'\\r'", '\r');
- test_char("'\\t'", '\t');
- test_char("'🐕'", '🐕'); // NOTE: This is an emoji
- test_char("'\\''", '\'');
- test_char("'\"'", '"');
- test_char("'\\u{1F415}'", '\u{1F415}');
-+ test_char("'a'q", 'a');
- }
-
- #[test]
- fn ints() {
- fn test_int(s: &str, value: u64, suffix: &str) {
- match lit(s) {
- Lit::Int(lit) => {
- assert_eq!(lit.base10_digits().parse::<u64>().unwrap(), value);
-@@ -180,9 +186,64 @@ fn floats() {
- }
- }
-
- test_float("5.5", 5.5, "");
- test_float("5.5E12", 5.5e12, "");
- test_float("5.5e12", 5.5e12, "");
- test_float("1.0__3e-12", 1.03e-12, "");
- test_float("1.03e+12", 1.03e12, "");
-+ test_float("9e99e99", 9e99, "e99");
- }
-+
-+#[test]
-+fn negative() {
-+ let span = Span::call_site();
-+ assert_eq!("-1", LitInt::new("-1", span).to_string());
-+ assert_eq!("-1i8", LitInt::new("-1i8", span).to_string());
-+ assert_eq!("-1i16", LitInt::new("-1i16", span).to_string());
-+ assert_eq!("-1i32", LitInt::new("-1i32", span).to_string());
-+ assert_eq!("-1i64", LitInt::new("-1i64", span).to_string());
-+ assert_eq!("-1.5", LitFloat::new("-1.5", span).to_string());
-+ assert_eq!("-1.5f32", LitFloat::new("-1.5f32", span).to_string());
-+ assert_eq!("-1.5f64", LitFloat::new("-1.5f64", span).to_string());
-+}
-+
-+#[test]
-+fn suffix() {
-+ fn get_suffix(token: &str) -> String {
-+ let lit = syn::parse_str::<Lit>(token).unwrap();
-+ match lit {
-+ Lit::Str(lit) => lit.suffix().to_owned(),
-+ Lit::ByteStr(lit) => lit.suffix().to_owned(),
-+ Lit::Byte(lit) => lit.suffix().to_owned(),
-+ Lit::Char(lit) => lit.suffix().to_owned(),
-+ Lit::Int(lit) => lit.suffix().to_owned(),
-+ Lit::Float(lit) => lit.suffix().to_owned(),
-+ _ => unimplemented!(),
-+ }
-+ }
-+
-+ assert_eq!(get_suffix("\"\"s"), "s");
-+ assert_eq!(get_suffix("r\"\"r"), "r");
-+ assert_eq!(get_suffix("b\"\"b"), "b");
-+ assert_eq!(get_suffix("br\"\"br"), "br");
-+ assert_eq!(get_suffix("r#\"\"#r"), "r");
-+ assert_eq!(get_suffix("'c'c"), "c");
-+ assert_eq!(get_suffix("b'b'b"), "b");
-+ assert_eq!(get_suffix("1i32"), "i32");
-+ assert_eq!(get_suffix("1_i32"), "i32");
-+ assert_eq!(get_suffix("1.0f32"), "f32");
-+ assert_eq!(get_suffix("1.0_f32"), "f32");
-+}
-+
-+#[test]
-+fn test_deep_group_empty() {
-+ let tokens = TokenStream::from_iter(vec![TokenTree::Group(Group::new(
-+ Delimiter::None,
-+ TokenStream::from_iter(vec![TokenTree::Group(Group::new(
-+ Delimiter::None,
-+ TokenStream::from_iter(vec![TokenTree::Literal(Literal::string("hi"))]),
-+ ))]),
-+ ))]);
-+
-+ snapshot!(tokens as Lit, @r#""hi""# );
-+}
-diff --git a/third_party/rust/syn/tests/test_meta.rs b/third_party/rust/syn/tests/test_meta.rs
---- a/third_party/rust/syn/tests/test_meta.rs
-+++ b/third_party/rust/syn/tests/test_meta.rs
-@@ -1,343 +1,339 @@
--extern crate syn;
--
--mod features;
--
- #[macro_use]
- mod macros;
-
- use syn::{Meta, MetaList, MetaNameValue, NestedMeta};
-
- #[test]
- fn test_parse_meta_item_word() {
- let input = "hello";
-
- snapshot!(input as Meta, @r###"
-- ⋮Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "hello",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮})
-+ Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "hello",
-+ arguments: None,
-+ },
-+ ],
-+ })
- "###);
- }
-
- #[test]
- fn test_parse_meta_name_value() {
- let input = "foo = 5";
- let (inner, meta) = (input, input);
-
- snapshot!(inner as MetaNameValue, @r###"
-- ⋮MetaNameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 5,
-- ⋮}
-+ MetaNameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 5,
-+ }
- "###);
-
- snapshot!(meta as Meta, @r###"
-- ⋮Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 5,
-- ⋮}
-+ Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 5,
-+ }
- "###);
-
- assert_eq!(meta, inner.into());
- }
-
- #[test]
- fn test_parse_meta_name_value_with_keyword() {
- let input = "static = 5";
- let (inner, meta) = (input, input);
-
- snapshot!(inner as MetaNameValue, @r###"
-- ⋮MetaNameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "static",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 5,
-- ⋮}
-+ MetaNameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "static",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 5,
-+ }
- "###);
-
- snapshot!(meta as Meta, @r###"
-- ⋮Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "static",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 5,
-- ⋮}
-+ Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "static",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 5,
-+ }
- "###);
-
- assert_eq!(meta, inner.into());
- }
-
- #[test]
- fn test_parse_meta_name_value_with_bool() {
- let input = "true = 5";
- let (inner, meta) = (input, input);
-
- snapshot!(inner as MetaNameValue, @r###"
-- ⋮MetaNameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "true",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 5,
-- ⋮}
-+ MetaNameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "true",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 5,
-+ }
- "###);
-
- snapshot!(meta as Meta, @r###"
-- ⋮Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "true",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 5,
-- ⋮}
-+ Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "true",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 5,
-+ }
- "###);
-
- assert_eq!(meta, inner.into());
- }
-
- #[test]
- fn test_parse_meta_item_list_lit() {
- let input = "foo(5)";
- let (inner, meta) = (input, input);
-
- snapshot!(inner as MetaList, @r###"
-- ⋮MetaList {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Lit(5),
-- ⋮ ],
-- ⋮}
-+ MetaList {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Lit(5),
-+ ],
-+ }
- "###);
-
- snapshot!(meta as Meta, @r###"
-- ⋮Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Lit(5),
-- ⋮ ],
-- ⋮}
-+ Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Lit(5),
-+ ],
-+ }
- "###);
-
- assert_eq!(meta, inner.into());
- }
-
- #[test]
- fn test_parse_meta_item_multiple() {
- let input = "foo(word, name = 5, list(name2 = 6), word2)";
- let (inner, meta) = (input, input);
-
- snapshot!(inner as MetaList, @r###"
-- ⋮MetaList {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Meta(Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "word",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ })),
-- ⋮ Meta(Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "name",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 5,
-- ⋮ }),
-- ⋮ Meta(Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "list",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Meta(Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "name2",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 6,
-- ⋮ }),
-- ⋮ ],
-- ⋮ }),
-- ⋮ Meta(Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "word2",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ })),
-- ⋮ ],
-- ⋮}
-+ MetaList {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Meta(Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "word",
-+ arguments: None,
-+ },
-+ ],
-+ })),
-+ Meta(Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "name",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 5,
-+ }),
-+ Meta(Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "list",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Meta(Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "name2",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 6,
-+ }),
-+ ],
-+ }),
-+ Meta(Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "word2",
-+ arguments: None,
-+ },
-+ ],
-+ })),
-+ ],
-+ }
- "###);
-
- snapshot!(meta as Meta, @r###"
-- ⋮Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "foo",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Meta(Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "word",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ })),
-- ⋮ Meta(Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "name",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 5,
-- ⋮ }),
-- ⋮ Meta(Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "list",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Meta(Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "name2",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 6,
-- ⋮ }),
-- ⋮ ],
-- ⋮ }),
-- ⋮ Meta(Path(Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "word2",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ })),
-- ⋮ ],
-- ⋮}
-+ Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "foo",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Meta(Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "word",
-+ arguments: None,
-+ },
-+ ],
-+ })),
-+ Meta(Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "name",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 5,
-+ }),
-+ Meta(Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "list",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Meta(Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "name2",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 6,
-+ }),
-+ ],
-+ }),
-+ Meta(Path(Path {
-+ segments: [
-+ PathSegment {
-+ ident: "word2",
-+ arguments: None,
-+ },
-+ ],
-+ })),
-+ ],
-+ }
- "###);
-
- assert_eq!(meta, inner.into());
- }
-
- #[test]
- fn test_parse_nested_meta() {
- let input = "5";
- snapshot!(input as NestedMeta, @"Lit(5)");
-
- let input = "list(name2 = 6)";
- snapshot!(input as NestedMeta, @r###"
-- ⋮Meta(Meta::List {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "list",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ nested: [
-- ⋮ Meta(Meta::NameValue {
-- ⋮ path: Path {
-- ⋮ segments: [
-- ⋮ PathSegment {
-- ⋮ ident: "name2",
-- ⋮ arguments: None,
-- ⋮ },
-- ⋮ ],
-- ⋮ },
-- ⋮ lit: 6,
-- ⋮ }),
-- ⋮ ],
-- ⋮})
-+ Meta(Meta::List {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "list",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ nested: [
-+ Meta(Meta::NameValue {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "name2",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ lit: 6,
-+ }),
-+ ],
-+ })
- "###);
- }
-diff --git a/third_party/rust/syn/tests/test_parse_buffer.rs b/third_party/rust/syn/tests/test_parse_buffer.rs
---- a/third_party/rust/syn/tests/test_parse_buffer.rs
-+++ b/third_party/rust/syn/tests/test_parse_buffer.rs
-@@ -1,12 +1,12 @@
--#[macro_use]
--extern crate syn;
--
-+use proc_macro2::{Delimiter, Group, Punct, Spacing, TokenStream, TokenTree};
-+use std::iter::FromIterator;
- use syn::parse::{discouraged::Speculative, Parse, ParseStream, Parser, Result};
-+use syn::{parenthesized, Token};
-
- #[test]
- #[should_panic(expected = "Fork was not derived from the advancing parse stream")]
- fn smuggled_speculative_cursor_between_sources() {
- struct BreakRules;
- impl Parse for BreakRules {
- fn parse(input1: ParseStream) -> Result<Self> {
- let nested = |input2: ParseStream| {
-@@ -48,8 +48,43 @@ fn smuggled_speculative_cursor_into_brac
- parenthesized!(a in input);
- input.advance_to(&a);
- Ok(Self)
- }
- }
-
- syn::parse_str::<BreakRules>("()").unwrap();
- }
-+
-+#[test]
-+fn trailing_empty_none_group() {
-+ fn parse(input: ParseStream) -> Result<()> {
-+ input.parse::<Token![+]>()?;
-+
-+ let content;
-+ parenthesized!(content in input);
-+ content.parse::<Token![+]>()?;
-+
-+ Ok(())
-+ }
-+
-+ // `+ ( + <Ø Ø> ) <Ø <Ø Ø> Ø>`
-+ let tokens = TokenStream::from_iter(vec![
-+ TokenTree::Punct(Punct::new('+', Spacing::Alone)),
-+ TokenTree::Group(Group::new(
-+ Delimiter::Parenthesis,
-+ TokenStream::from_iter(vec![
-+ TokenTree::Punct(Punct::new('+', Spacing::Alone)),
-+ TokenTree::Group(Group::new(Delimiter::None, TokenStream::new())),
-+ ]),
-+ )),
-+ TokenTree::Group(Group::new(Delimiter::None, TokenStream::new())),
-+ TokenTree::Group(Group::new(
-+ Delimiter::None,
-+ TokenStream::from_iter(vec![TokenTree::Group(Group::new(
-+ Delimiter::None,
-+ TokenStream::new(),
-+ ))]),
-+ )),
-+ ]);
-+
-+ parse.parse2(tokens).unwrap();
-+}
-diff --git a/third_party/rust/syn/tests/test_parse_stream.rs b/third_party/rust/syn/tests/test_parse_stream.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/tests/test_parse_stream.rs
-@@ -0,0 +1,12 @@
-+use syn::ext::IdentExt;
-+use syn::parse::ParseStream;
-+use syn::{Ident, Token};
-+
-+#[test]
-+fn test_peek() {
-+ let _ = |input: ParseStream| {
-+ let _ = input.peek(Ident);
-+ let _ = input.peek(Ident::peek_any);
-+ let _ = input.peek(Token![::]);
-+ };
-+}
-diff --git a/third_party/rust/syn/tests/test_pat.rs b/third_party/rust/syn/tests/test_pat.rs
---- a/third_party/rust/syn/tests/test_pat.rs
-+++ b/third_party/rust/syn/tests/test_pat.rs
-@@ -1,23 +1,38 @@
--extern crate quote;
--extern crate syn;
--
--mod features;
--
- use quote::quote;
--use syn::Pat;
-+use syn::{Item, Pat, Stmt};
-
- #[test]
- fn test_pat_ident() {
- match syn::parse2(quote!(self)).unwrap() {
- Pat::Ident(_) => (),
- value => panic!("expected PatIdent, got {:?}", value),
- }
- }
-
- #[test]
- fn test_pat_path() {
- match syn::parse2(quote!(self::CONST)).unwrap() {
- Pat::Path(_) => (),
- value => panic!("expected PatPath, got {:?}", value),
- }
- }
-+
-+#[test]
-+fn test_leading_vert() {
-+ // https://github.com/rust-lang/rust/blob/1.43.0/src/test/ui/or-patterns/remove-leading-vert.rs
-+
-+ syn::parse_str::<Item>("fn f() {}").unwrap();
-+ syn::parse_str::<Item>("fn fun1(| A: E) {}").unwrap_err();
-+ syn::parse_str::<Item>("fn fun2(|| A: E) {}").unwrap_err();
-+
-+ syn::parse_str::<Stmt>("let | () = ();").unwrap();
-+ syn::parse_str::<Stmt>("let (| A): E;").unwrap_err();
-+ syn::parse_str::<Stmt>("let (|| A): (E);").unwrap_err();
-+ syn::parse_str::<Stmt>("let (| A,): (E,);").unwrap_err();
-+ syn::parse_str::<Stmt>("let [| A]: [E; 1];").unwrap_err();
-+ syn::parse_str::<Stmt>("let [|| A]: [E; 1];").unwrap_err();
-+ syn::parse_str::<Stmt>("let TS(| A): TS;").unwrap_err();
-+ syn::parse_str::<Stmt>("let TS(|| A): TS;").unwrap_err();
-+ syn::parse_str::<Stmt>("let NS { f: | A }: NS;").unwrap_err();
-+ syn::parse_str::<Stmt>("let NS { f: || A }: NS;").unwrap_err();
-+}
-diff --git a/third_party/rust/syn/tests/test_path.rs b/third_party/rust/syn/tests/test_path.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/tests/test_path.rs
-@@ -0,0 +1,52 @@
-+#[macro_use]
-+mod macros;
-+
-+use proc_macro2::{Delimiter, Group, Ident, Punct, Spacing, Span, TokenStream, TokenTree};
-+use quote::quote;
-+use std::iter::FromIterator;
-+use syn::{Expr, Type};
-+
-+#[test]
-+fn parse_interpolated_leading_component() {
-+ // mimics the token stream corresponding to `$mod::rest`
-+ let tokens = TokenStream::from_iter(vec![
-+ TokenTree::Group(Group::new(Delimiter::None, quote! { first })),
-+ TokenTree::Punct(Punct::new(':', Spacing::Joint)),
-+ TokenTree::Punct(Punct::new(':', Spacing::Alone)),
-+ TokenTree::Ident(Ident::new("rest", Span::call_site())),
-+ ]);
-+
-+ snapshot!(tokens.clone() as Expr, @r###"
-+ Expr::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "first",
-+ arguments: None,
-+ },
-+ PathSegment {
-+ ident: "rest",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ }
-+ "###);
-+
-+ snapshot!(tokens as Type, @r###"
-+ Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "first",
-+ arguments: None,
-+ },
-+ PathSegment {
-+ ident: "rest",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ }
-+ "###);
-+}
-diff --git a/third_party/rust/syn/tests/test_precedence.rs b/third_party/rust/syn/tests/test_precedence.rs
---- a/third_party/rust/syn/tests/test_precedence.rs
-+++ b/third_party/rust/syn/tests/test_precedence.rs
-@@ -1,43 +1,34 @@
- #![cfg(not(syn_disable_nightly_tests))]
- #![recursion_limit = "1024"]
- #![feature(rustc_private)]
-
- //! The tests in this module do the following:
- //!
--//! 1. Parse a given expression in both `syn` and `libsyntax`.
-+//! 1. Parse a given expression in both `syn` and `librustc`.
- //! 2. Fold over the expression adding brackets around each subexpression (with
--//! some complications - see the `syn_brackets` and `libsyntax_brackets`
-+//! some complications - see the `syn_brackets` and `librustc_brackets`
- //! methods).
- //! 3. Serialize the `syn` expression back into a string, and re-parse it with
--//! `libsyntax`.
-+//! `librustc`.
- //! 4. Respan all of the expressions, replacing the spans with the default
- //! spans.
- //! 5. Compare the expressions with one another, if they are not equal fail.
-
--extern crate quote;
--extern crate rayon;
--extern crate regex;
-+extern crate rustc_ast;
- extern crate rustc_data_structures;
--extern crate smallvec;
--extern crate syn;
--extern crate syntax;
--extern crate syntax_pos;
--extern crate walkdir;
--
--mod features;
-+extern crate rustc_span;
-
- use quote::quote;
- use rayon::iter::{IntoParallelIterator, ParallelIterator};
- use regex::Regex;
--use smallvec::smallvec;
--use syntax::ast;
--use syntax::ptr::P;
--use syntax_pos::edition::Edition;
-+use rustc_ast::ast;
-+use rustc_ast::ptr::P;
-+use rustc_span::edition::Edition;
- use walkdir::{DirEntry, WalkDir};
-
- use std::fs::File;
- use std::io::Read;
- use std::process;
- use std::sync::atomic::{AtomicUsize, Ordering};
-
- use common::eq::SpanlessEq;
-@@ -68,17 +59,17 @@ fn test_simple_precedence() {
- for input in EXPRS {
- let expr = if let Some(expr) = parse::syn_expr(input) {
- expr
- } else {
- failed += 1;
- continue;
- };
-
-- let pf = match test_expressions(vec![expr]) {
-+ let pf = match test_expressions(Edition::Edition2018, vec![expr]) {
- (1, 0) => "passed",
- (0, 1) => {
- failed += 1;
- "failed"
- }
- _ => unreachable!(),
- };
- errorf!("=== {}: {}\n", input, pf);
-@@ -86,18 +77,18 @@ fn test_simple_precedence() {
-
- if failed > 0 {
- panic!("Failed {} tests", failed);
- }
- }
-
- /// Test expressions from rustc, like in `test_round_trip`.
- #[test]
--#[cfg_attr(target_os = "windows", ignore = "requires nix .sh")]
- fn test_rustc_precedence() {
-+ common::rayon_init();
- repo::clone_rust();
- let abort_after = common::abort_after();
- if abort_after == 0 {
- panic!("Skipping all precedence tests");
- }
-
- let passed = AtomicUsize::new(0);
- let failed = AtomicUsize::new(0);
-@@ -113,34 +104,26 @@ fn test_rustc_precedence() {
- .unwrap()
- .into_par_iter()
- .for_each(|entry| {
- let path = entry.path();
- if path.is_dir() {
- return;
- }
-
-- // Our version of `libsyntax` can't parse this tests
-- if path
-- .to_str()
-- .unwrap()
-- .ends_with("optional_comma_in_match_arm.rs")
-- {
-- return;
-- }
--
- let mut file = File::open(path).unwrap();
- let mut content = String::new();
- file.read_to_string(&mut content).unwrap();
- let content = edition_regex.replace_all(&content, "_$0");
-
- let (l_passed, l_failed) = match syn::parse_file(&content) {
- Ok(file) => {
-+ let edition = repo::edition(path).parse().unwrap();
- let exprs = collect_exprs(file);
-- test_expressions(exprs)
-+ test_expressions(edition, exprs)
- }
- Err(msg) => {
- errorf!("syn failed to parse\n{:?}\n", msg);
- (0, 1)
- }
- };
-
- errorf!(
-@@ -164,147 +147,182 @@ fn test_rustc_precedence() {
- errorf!("\n===== Precedence Test Results =====\n");
- errorf!("{} passed | {} failed\n", passed, failed);
-
- if failed > 0 {
- panic!("{} failures", failed);
- }
- }
-
--fn test_expressions(exprs: Vec<syn::Expr>) -> (usize, usize) {
-+fn test_expressions(edition: Edition, exprs: Vec<syn::Expr>) -> (usize, usize) {
- let mut passed = 0;
- let mut failed = 0;
-
-- syntax::with_globals(Edition::Edition2018, || {
-+ rustc_span::with_session_globals(edition, || {
- for expr in exprs {
- let raw = quote!(#expr).to_string();
-
-- let libsyntax_ast = if let Some(e) = libsyntax_parse_and_rewrite(&raw) {
-+ let librustc_ast = if let Some(e) = librustc_parse_and_rewrite(&raw) {
- e
- } else {
- failed += 1;
-- errorf!("\nFAIL - libsyntax failed to parse raw\n");
-+ errorf!("\nFAIL - librustc failed to parse raw\n");
- continue;
- };
-
- let syn_expr = syn_brackets(expr);
-- let syn_ast = if let Some(e) = parse::libsyntax_expr("e!(#syn_expr).to_string()) {
-+ let syn_ast = if let Some(e) = parse::librustc_expr("e!(#syn_expr).to_string()) {
- e
- } else {
- failed += 1;
-- errorf!("\nFAIL - libsyntax failed to parse bracketed\n");
-+ errorf!("\nFAIL - librustc failed to parse bracketed\n");
- continue;
- };
-
-- if SpanlessEq::eq(&syn_ast, &libsyntax_ast) {
-+ if SpanlessEq::eq(&syn_ast, &librustc_ast) {
- passed += 1;
- } else {
- failed += 1;
-- errorf!("\nFAIL\n{:?}\n!=\n{:?}\n", syn_ast, libsyntax_ast);
-+ errorf!("\nFAIL\n{:?}\n!=\n{:?}\n", syn_ast, librustc_ast);
- }
- }
- });
-
- (passed, failed)
- }
-
--fn libsyntax_parse_and_rewrite(input: &str) -> Option<P<ast::Expr>> {
-- parse::libsyntax_expr(input).and_then(libsyntax_brackets)
-+fn librustc_parse_and_rewrite(input: &str) -> Option<P<ast::Expr>> {
-+ parse::librustc_expr(input).and_then(librustc_brackets)
- }
-
- /// Wrap every expression which is not already wrapped in parens with parens, to
- /// reveal the precidence of the parsed expressions, and produce a stringified
- /// form of the resulting expression.
- ///
--/// This method operates on libsyntax objects.
--fn libsyntax_brackets(mut libsyntax_expr: P<ast::Expr>) -> Option<P<ast::Expr>> {
-+/// This method operates on librustc objects.
-+fn librustc_brackets(mut librustc_expr: P<ast::Expr>) -> Option<P<ast::Expr>> {
-+ use rustc_ast::ast::{
-+ Block, BorrowKind, Expr, ExprKind, Field, GenericArg, MacCall, Pat, Stmt, StmtKind, Ty,
-+ };
-+ use rustc_ast::mut_visit::{noop_visit_generic_arg, MutVisitor};
-+ use rustc_data_structures::map_in_place::MapInPlace;
- use rustc_data_structures::thin_vec::ThinVec;
-- use smallvec::SmallVec;
-+ use rustc_span::DUMMY_SP;
- use std::mem;
-- use syntax::ast::{Expr, ExprKind, Field, Mac, Pat, Stmt, StmtKind, Ty};
-- use syntax::mut_visit::{noop_visit_expr, MutVisitor};
-- use syntax_pos::DUMMY_SP;
-
- struct BracketsVisitor {
- failed: bool,
- };
-
-+ fn flat_map_field<T: MutVisitor>(mut f: Field, vis: &mut T) -> Vec<Field> {
-+ if f.is_shorthand {
-+ noop_visit_expr(&mut f.expr, vis);
-+ } else {
-+ vis.visit_expr(&mut f.expr);
-+ }
-+ vec![f]
-+ }
-+
-+ fn flat_map_stmt<T: MutVisitor>(stmt: Stmt, vis: &mut T) -> Vec<Stmt> {
-+ let kind = match stmt.kind {
-+ // Don't wrap toplevel expressions in statements.
-+ StmtKind::Expr(mut e) => {
-+ noop_visit_expr(&mut e, vis);
-+ StmtKind::Expr(e)
-+ }
-+ StmtKind::Semi(mut e) => {
-+ noop_visit_expr(&mut e, vis);
-+ StmtKind::Semi(e)
-+ }
-+ s => s,
-+ };
-+
-+ vec![Stmt { kind, ..stmt }]
-+ }
-+
-+ fn noop_visit_expr<T: MutVisitor>(e: &mut Expr, vis: &mut T) {
-+ use rustc_ast::mut_visit::{noop_visit_expr, visit_opt, visit_thin_attrs};
-+ match &mut e.kind {
-+ ExprKind::AddrOf(BorrowKind::Raw, ..) => {}
-+ ExprKind::Struct(path, fields, expr) => {
-+ vis.visit_path(path);
-+ fields.flat_map_in_place(|field| flat_map_field(field, vis));
-+ visit_opt(expr, |expr| vis.visit_expr(expr));
-+ vis.visit_id(&mut e.id);
-+ vis.visit_span(&mut e.span);
-+ visit_thin_attrs(&mut e.attrs, vis);
-+ }
-+ _ => noop_visit_expr(e, vis),
-+ }
-+ }
-+
- impl MutVisitor for BracketsVisitor {
- fn visit_expr(&mut self, e: &mut P<Expr>) {
- noop_visit_expr(e, self);
-- match e.node {
-+ match e.kind {
- ExprKind::If(..) | ExprKind::Block(..) | ExprKind::Let(..) => {}
- _ => {
- let inner = mem::replace(
- e,
- P(Expr {
- id: ast::DUMMY_NODE_ID,
-- node: ExprKind::Err,
-+ kind: ExprKind::Err,
- span: DUMMY_SP,
- attrs: ThinVec::new(),
-+ tokens: None,
- }),
- );
-- e.node = ExprKind::Paren(inner);
-+ e.kind = ExprKind::Paren(inner);
- }
- }
- }
-
-- fn flat_map_field(&mut self, mut f: Field) -> SmallVec<[Field; 1]> {
-- if f.is_shorthand {
-- noop_visit_expr(&mut f.expr, self);
-- } else {
-- self.visit_expr(&mut f.expr);
-+ fn visit_generic_arg(&mut self, arg: &mut GenericArg) {
-+ match arg {
-+ // Don't wrap const generic arg as that's invalid syntax.
-+ GenericArg::Const(arg) => noop_visit_expr(&mut arg.value, self),
-+ _ => noop_visit_generic_arg(arg, self),
- }
-- SmallVec::from([f])
-+ }
-+
-+ fn visit_block(&mut self, block: &mut P<Block>) {
-+ self.visit_id(&mut block.id);
-+ block
-+ .stmts
-+ .flat_map_in_place(|stmt| flat_map_stmt(stmt, self));
-+ self.visit_span(&mut block.span);
- }
-
- // We don't want to look at expressions that might appear in patterns or
- // types yet. We'll look into comparing those in the future. For now
- // focus on expressions appearing in other places.
- fn visit_pat(&mut self, pat: &mut P<Pat>) {
- let _ = pat;
- }
-
- fn visit_ty(&mut self, ty: &mut P<Ty>) {
- let _ = ty;
- }
-
-- fn flat_map_stmt(&mut self, stmt: Stmt) -> SmallVec<[Stmt; 1]> {
-- let node = match stmt.node {
-- // Don't wrap toplevel expressions in statements.
-- StmtKind::Expr(mut e) => {
-- noop_visit_expr(&mut e, self);
-- StmtKind::Expr(e)
-- }
-- StmtKind::Semi(mut e) => {
-- noop_visit_expr(&mut e, self);
-- StmtKind::Semi(e)
-- }
-- s => s,
-- };
--
-- smallvec![Stmt { node, ..stmt }]
-- }
--
-- fn visit_mac(&mut self, mac: &mut Mac) {
-- // By default when folding over macros, libsyntax panics. This is
-+ fn visit_mac(&mut self, mac: &mut MacCall) {
-+ // By default when folding over macros, librustc panics. This is
- // because it's usually not what you want, you want to run after
- // macro expansion. We do want to do that (syn doesn't do macro
- // expansion), so we implement visit_mac to just return the macro
- // unchanged.
- let _ = mac;
- }
- }
-
- let mut folder = BracketsVisitor { failed: false };
-- folder.visit_expr(&mut libsyntax_expr);
-+ folder.visit_expr(&mut librustc_expr);
- if folder.failed {
- None
- } else {
-- Some(libsyntax_expr)
-+ Some(librustc_expr)
- }
- }
-
- /// Wrap every expression which is not already wrapped in parens with parens, to
- /// reveal the precedence of the parsed expressions, and produce a stringified
- /// form of the resulting expression.
- fn syn_brackets(syn_expr: syn::Expr) -> syn::Expr {
- use syn::fold::*;
-@@ -313,24 +331,43 @@ fn syn_brackets(syn_expr: syn::Expr) ->
- struct ParenthesizeEveryExpr;
- impl Fold for ParenthesizeEveryExpr {
- fn fold_expr(&mut self, expr: Expr) -> Expr {
- match expr {
- Expr::Group(_) => unreachable!(),
- Expr::If(..) | Expr::Unsafe(..) | Expr::Block(..) | Expr::Let(..) => {
- fold_expr(self, expr)
- }
-- node => Expr::Paren(ExprParen {
-+ _ => Expr::Paren(ExprParen {
- attrs: Vec::new(),
-- expr: Box::new(fold_expr(self, node)),
-+ expr: Box::new(fold_expr(self, expr)),
- paren_token: token::Paren::default(),
- }),
- }
- }
-
-+ fn fold_generic_argument(&mut self, arg: GenericArgument) -> GenericArgument {
-+ match arg {
-+ // Don't wrap const generic arg as that's invalid syntax.
-+ GenericArgument::Const(a) => GenericArgument::Const(fold_expr(self, a)),
-+ _ => fold_generic_argument(self, arg),
-+ }
-+ }
-+
-+ fn fold_generic_method_argument(
-+ &mut self,
-+ arg: GenericMethodArgument,
-+ ) -> GenericMethodArgument {
-+ match arg {
-+ // Don't wrap const generic arg as that's invalid syntax.
-+ GenericMethodArgument::Const(a) => GenericMethodArgument::Const(fold_expr(self, a)),
-+ _ => fold_generic_method_argument(self, arg),
-+ }
-+ }
-+
- fn fold_stmt(&mut self, stmt: Stmt) -> Stmt {
- match stmt {
- // Don't wrap toplevel expressions in statements.
- Stmt::Expr(e) => Stmt::Expr(fold_expr(self, e)),
- Stmt::Semi(e, semi) => Stmt::Semi(fold_expr(self, e), semi),
- s => s,
- }
- }
-@@ -355,17 +392,20 @@ fn syn_brackets(syn_expr: syn::Expr) ->
- fn collect_exprs(file: syn::File) -> Vec<syn::Expr> {
- use syn::fold::*;
- use syn::punctuated::Punctuated;
- use syn::*;
-
- struct CollectExprs(Vec<Expr>);
- impl Fold for CollectExprs {
- fn fold_expr(&mut self, expr: Expr) -> Expr {
-- self.0.push(expr);
-+ match expr {
-+ Expr::Verbatim(tokens) if tokens.is_empty() => {}
-+ _ => self.0.push(expr),
-+ }
-
- Expr::Tuple(ExprTuple {
- attrs: vec![],
- elems: Punctuated::new(),
- paren_token: token::Paren::default(),
- })
- }
- }
-diff --git a/third_party/rust/syn/tests/test_receiver.rs b/third_party/rust/syn/tests/test_receiver.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/tests/test_receiver.rs
-@@ -0,0 +1,127 @@
-+use syn::{parse_quote, FnArg, Receiver, TraitItemMethod};
-+
-+#[test]
-+fn test_by_value() {
-+ let TraitItemMethod { sig, .. } = parse_quote! {
-+ fn by_value(self: Self);
-+ };
-+ match sig.receiver() {
-+ Some(FnArg::Typed(_)) => (),
-+ value => panic!("expected FnArg::Typed, got {:?}", value),
-+ }
-+}
-+
-+#[test]
-+fn test_by_mut_value() {
-+ let TraitItemMethod { sig, .. } = parse_quote! {
-+ fn by_mut(mut self: Self);
-+ };
-+ match sig.receiver() {
-+ Some(FnArg::Typed(_)) => (),
-+ value => panic!("expected FnArg::Typed, got {:?}", value),
-+ }
-+}
-+
-+#[test]
-+fn test_by_ref() {
-+ let TraitItemMethod { sig, .. } = parse_quote! {
-+ fn by_ref(self: &Self);
-+ };
-+ match sig.receiver() {
-+ Some(FnArg::Typed(_)) => (),
-+ value => panic!("expected FnArg::Typed, got {:?}", value),
-+ }
-+}
-+
-+#[test]
-+fn test_by_box() {
-+ let TraitItemMethod { sig, .. } = parse_quote! {
-+ fn by_box(self: Box<Self>);
-+ };
-+ match sig.receiver() {
-+ Some(FnArg::Typed(_)) => (),
-+ value => panic!("expected FnArg::Typed, got {:?}", value),
-+ }
-+}
-+
-+#[test]
-+fn test_by_pin() {
-+ let TraitItemMethod { sig, .. } = parse_quote! {
-+ fn by_pin(self: Pin<Self>);
-+ };
-+ match sig.receiver() {
-+ Some(FnArg::Typed(_)) => (),
-+ value => panic!("expected FnArg::Typed, got {:?}", value),
-+ }
-+}
-+
-+#[test]
-+fn test_explicit_type() {
-+ let TraitItemMethod { sig, .. } = parse_quote! {
-+ fn explicit_type(self: Pin<MyType>);
-+ };
-+ match sig.receiver() {
-+ Some(FnArg::Typed(_)) => (),
-+ value => panic!("expected FnArg::Typed, got {:?}", value),
-+ }
-+}
-+
-+#[test]
-+fn test_value_shorthand() {
-+ let TraitItemMethod { sig, .. } = parse_quote! {
-+ fn value_shorthand(self);
-+ };
-+ match sig.receiver() {
-+ Some(FnArg::Receiver(Receiver {
-+ reference: None,
-+ mutability: None,
-+ ..
-+ })) => (),
-+ value => panic!("expected FnArg::Receiver without ref/mut, got {:?}", value),
-+ }
-+}
-+
-+#[test]
-+fn test_mut_value_shorthand() {
-+ let TraitItemMethod { sig, .. } = parse_quote! {
-+ fn mut_value_shorthand(mut self);
-+ };
-+ match sig.receiver() {
-+ Some(FnArg::Receiver(Receiver {
-+ reference: None,
-+ mutability: Some(_),
-+ ..
-+ })) => (),
-+ value => panic!("expected FnArg::Receiver with mut, got {:?}", value),
-+ }
-+}
-+
-+#[test]
-+fn test_ref_shorthand() {
-+ let TraitItemMethod { sig, .. } = parse_quote! {
-+ fn ref_shorthand(&self);
-+ };
-+ match sig.receiver() {
-+ Some(FnArg::Receiver(Receiver {
-+ reference: Some(_),
-+ mutability: None,
-+ ..
-+ })) => (),
-+ value => panic!("expected FnArg::Receiver with ref, got {:?}", value),
-+ }
-+}
-+
-+#[test]
-+fn test_ref_mut_shorthand() {
-+ let TraitItemMethod { sig, .. } = parse_quote! {
-+ fn ref_mut_shorthand(&mut self);
-+ };
-+ match sig.receiver() {
-+ Some(FnArg::Receiver(Receiver {
-+ reference: Some(_),
-+ mutability: Some(_),
-+ ..
-+ })) => (),
-+ value => panic!("expected FnArg::Receiver with ref+mut, got {:?}", value),
-+ }
-+}
-diff --git a/third_party/rust/syn/tests/test_round_trip.rs b/third_party/rust/syn/tests/test_round_trip.rs
---- a/third_party/rust/syn/tests/test_round_trip.rs
-+++ b/third_party/rust/syn/tests/test_round_trip.rs
-@@ -1,28 +1,26 @@
- #![cfg(not(syn_disable_nightly_tests))]
- #![recursion_limit = "1024"]
- #![feature(rustc_private)]
-
--extern crate quote;
--extern crate rayon;
--extern crate syn;
--extern crate syntax;
--extern crate syntax_pos;
--extern crate walkdir;
--
--mod features;
-+extern crate rustc_ast;
-+extern crate rustc_errors;
-+extern crate rustc_expand;
-+extern crate rustc_parse as parse;
-+extern crate rustc_session;
-+extern crate rustc_span;
-
- use quote::quote;
- use rayon::iter::{IntoParallelIterator, ParallelIterator};
--use syntax::ast;
--use syntax::parse::{self, PResult, ParseSess};
--use syntax::source_map::FilePathMapping;
--use syntax_pos::edition::Edition;
--use syntax_pos::FileName;
-+use rustc_ast::ast;
-+use rustc_errors::PResult;
-+use rustc_session::parse::ParseSess;
-+use rustc_span::source_map::FilePathMapping;
-+use rustc_span::FileName;
- use walkdir::{DirEntry, WalkDir};
-
- use std::fs::File;
- use std::io::Read;
- use std::panic;
- use std::process;
- use std::sync::atomic::{AtomicUsize, Ordering};
- use std::time::Instant;
-@@ -33,18 +31,18 @@ mod macros;
- #[allow(dead_code)]
- mod common;
-
- mod repo;
-
- use common::eq::SpanlessEq;
-
- #[test]
--#[cfg_attr(target_os = "windows", ignore = "requires nix .sh")]
- fn test_round_trip() {
-+ common::rayon_init();
- repo::clone_rust();
- let abort_after = common::abort_after();
- if abort_after == 0 {
- panic!("Skipping all round_trip tests");
- }
-
- let failed = AtomicUsize::new(0);
-
-@@ -73,43 +71,44 @@ fn test_round_trip() {
- let prev_failed = failed.fetch_add(1, Ordering::SeqCst);
- if prev_failed + 1 >= abort_after {
- process::exit(1);
- }
- return;
- }
- };
- let back = quote!(#krate).to_string();
-+ let edition = repo::edition(path).parse().unwrap();
-
- let equal = panic::catch_unwind(|| {
-- syntax::with_globals(Edition::Edition2018, || {
-+ rustc_span::with_session_globals(edition, || {
- let sess = ParseSess::new(FilePathMapping::empty());
-- let before = match libsyntax_parse(content, &sess) {
-+ let before = match librustc_parse(content, &sess) {
- Ok(before) => before,
- Err(mut diagnostic) => {
- diagnostic.cancel();
- if diagnostic
- .message()
- .starts_with("file not found for module")
- {
- errorf!("=== {}: ignore\n", path.display());
- } else {
- errorf!(
-- "=== {}: ignore - libsyntax failed to parse original content: {}\n",
-+ "=== {}: ignore - librustc failed to parse original content: {}\n",
- path.display(),
- diagnostic.message()
- );
- }
- return true;
- }
- };
-- let after = match libsyntax_parse(back, &sess) {
-+ let after = match librustc_parse(back, &sess) {
- Ok(after) => after,
- Err(mut diagnostic) => {
-- errorf!("=== {}: libsyntax failed to parse", path.display());
-+ errorf!("=== {}: librustc failed to parse", path.display());
- diagnostic.emit();
- return false;
- }
- };
-
- if SpanlessEq::eq(&before, &after) {
- errorf!(
- "=== {}: pass in {}ms\n",
-@@ -125,29 +124,29 @@ fn test_round_trip() {
- before,
- after,
- );
- false
- }
- })
- });
- match equal {
-- Err(_) => errorf!("=== {}: ignoring libsyntax panic\n", path.display()),
-+ Err(_) => errorf!("=== {}: ignoring librustc panic\n", path.display()),
- Ok(true) => {}
- Ok(false) => {
- let prev_failed = failed.fetch_add(1, Ordering::SeqCst);
- if prev_failed + 1 >= abort_after {
- process::exit(1);
- }
- }
- }
- });
-
- let failed = failed.load(Ordering::SeqCst);
- if failed > 0 {
- panic!("{} failures", failed);
- }
- }
-
--fn libsyntax_parse(content: String, sess: &ParseSess) -> PResult<ast::Crate> {
-+fn librustc_parse(content: String, sess: &ParseSess) -> PResult<ast::Crate> {
- let name = FileName::Custom("test_round_trip".to_string());
- parse::parse_crate_from_source_str(name, content, sess)
- }
-diff --git a/third_party/rust/syn/tests/test_shebang.rs b/third_party/rust/syn/tests/test_shebang.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/tests/test_shebang.rs
-@@ -0,0 +1,59 @@
-+#[macro_use]
-+mod macros;
-+
-+#[test]
-+fn test_basic() {
-+ let content = "#!/usr/bin/env rustx\nfn main() {}";
-+ let file = syn::parse_file(content).unwrap();
-+ snapshot!(file, @r###"
-+ File {
-+ shebang: Some("#!/usr/bin/env rustx"),
-+ items: [
-+ Item::Fn {
-+ vis: Inherited,
-+ sig: Signature {
-+ ident: "main",
-+ generics: Generics,
-+ output: Default,
-+ },
-+ block: Block,
-+ },
-+ ],
-+ }
-+ "###);
-+}
-+
-+#[test]
-+fn test_comment() {
-+ let content = "#!//am/i/a/comment\n[allow(dead_code)] fn main() {}";
-+ let file = syn::parse_file(content).unwrap();
-+ snapshot!(file, @r###"
-+ File {
-+ attrs: [
-+ Attribute {
-+ style: Inner,
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "allow",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ tokens: TokenStream(`(dead_code)`),
-+ },
-+ ],
-+ items: [
-+ Item::Fn {
-+ vis: Inherited,
-+ sig: Signature {
-+ ident: "main",
-+ generics: Generics,
-+ output: Default,
-+ },
-+ block: Block,
-+ },
-+ ],
-+ }
-+ "###);
-+}
-diff --git a/third_party/rust/syn/tests/test_should_parse.rs b/third_party/rust/syn/tests/test_should_parse.rs
---- a/third_party/rust/syn/tests/test_should_parse.rs
-+++ b/third_party/rust/syn/tests/test_should_parse.rs
-@@ -1,12 +1,8 @@
--extern crate syn;
--
--mod features;
--
- macro_rules! should_parse {
- ($name:ident, { $($in:tt)* }) => {
- #[test]
- fn $name() {
- // Make sure we can parse the file!
- syn::parse_file(stringify!($($in)*)).unwrap();
- }
- }
-diff --git a/third_party/rust/syn/tests/test_size.rs b/third_party/rust/syn/tests/test_size.rs
---- a/third_party/rust/syn/tests/test_size.rs
-+++ b/third_party/rust/syn/tests/test_size.rs
-@@ -1,12 +1,10 @@
- #![cfg(target_pointer_width = "64")]
-
--mod features;
--
- use std::mem;
- use syn::*;
-
- #[test]
- fn test_expr_size() {
- assert_eq!(mem::size_of::<Expr>(), 280);
- }
-
-diff --git a/third_party/rust/syn/tests/test_stmt.rs b/third_party/rust/syn/tests/test_stmt.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/tests/test_stmt.rs
-@@ -0,0 +1,44 @@
-+#[macro_use]
-+mod macros;
-+
-+use syn::Stmt;
-+
-+#[test]
-+fn test_raw_operator() {
-+ let stmt = syn::parse_str::<Stmt>("let _ = &raw const x;").unwrap();
-+
-+ snapshot!(stmt, @r###"
-+ Local(Local {
-+ pat: Pat::Wild,
-+ init: Some(Verbatim(`& raw const x`)),
-+ })
-+ "###);
-+}
-+
-+#[test]
-+fn test_raw_variable() {
-+ let stmt = syn::parse_str::<Stmt>("let _ = &raw;").unwrap();
-+
-+ snapshot!(stmt, @r###"
-+ Local(Local {
-+ pat: Pat::Wild,
-+ init: Some(Expr::Reference {
-+ expr: Expr::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "raw",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ },
-+ }),
-+ })
-+ "###);
-+}
-+
-+#[test]
-+fn test_raw_invalid() {
-+ assert!(syn::parse_str::<Stmt>("let _ = &raw x;").is_err());
-+}
-diff --git a/third_party/rust/syn/tests/test_token_trees.rs b/third_party/rust/syn/tests/test_token_trees.rs
---- a/third_party/rust/syn/tests/test_token_trees.rs
-+++ b/third_party/rust/syn/tests/test_token_trees.rs
-@@ -1,14 +1,8 @@
--extern crate proc_macro2;
--extern crate quote;
--extern crate syn;
--
--mod features;
--
- #[macro_use]
- mod macros;
-
- use proc_macro2::TokenStream;
- use quote::quote;
- use syn::Lit;
-
- #[test]
-@@ -16,17 +10,21 @@ fn test_struct() {
- let input = "
- #[derive(Debug, Clone)]
- pub struct Item {
- pub ident: Ident,
- pub attrs: Vec<Attribute>,
- }
- ";
-
-- snapshot!(input as TokenStream, @"`# [ derive ( Debug , Clone ) ] pub struct Item { pub ident : Ident , pub attrs : Vec < Attribute >, }`");
-+ snapshot!(input as TokenStream, @r###"
-+ TokenStream(
-+ `# [derive (Debug , Clone)] pub struct Item { pub ident : Ident , pub attrs : Vec < Attribute >, }`,
-+ )
-+ "###);
- }
-
- #[test]
- fn test_literal_mangling() {
- let code = "0_4";
- let parsed: Lit = syn::parse_str(code).unwrap();
- assert_eq!(code, quote!(#parsed).to_string());
- }
-diff --git a/third_party/rust/syn/tests/test_ty.rs b/third_party/rust/syn/tests/test_ty.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/tests/test_ty.rs
-@@ -0,0 +1,53 @@
-+#[macro_use]
-+mod macros;
-+
-+use proc_macro2::{Delimiter, Group, Ident, Punct, Spacing, Span, TokenStream, TokenTree};
-+use quote::quote;
-+use std::iter::FromIterator;
-+use syn::Type;
-+
-+#[test]
-+fn test_mut_self() {
-+ syn::parse_str::<Type>("fn(mut self)").unwrap();
-+ syn::parse_str::<Type>("fn(mut self: ())").unwrap();
-+ syn::parse_str::<Type>("fn(mut self: ...)").unwrap_err();
-+ syn::parse_str::<Type>("fn(mut self: mut self)").unwrap_err();
-+ syn::parse_str::<Type>("fn(mut self::T)").unwrap_err();
-+}
-+
-+#[test]
-+fn test_macro_variable_type() {
-+ // mimics the token stream corresponding to `$ty<T>`
-+ let tokens = TokenStream::from_iter(vec![
-+ TokenTree::Group(Group::new(Delimiter::None, quote! { ty })),
-+ TokenTree::Punct(Punct::new('<', Spacing::Alone)),
-+ TokenTree::Ident(Ident::new("T", Span::call_site())),
-+ TokenTree::Punct(Punct::new('>', Spacing::Alone)),
-+ ]);
-+
-+ snapshot!(tokens as Type, @r###"
-+ Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "ty",
-+ arguments: PathArguments::AngleBracketed {
-+ args: [
-+ Type(Type::Path {
-+ path: Path {
-+ segments: [
-+ PathSegment {
-+ ident: "T",
-+ arguments: None,
-+ },
-+ ],
-+ },
-+ }),
-+ ],
-+ },
-+ },
-+ ],
-+ },
-+ }
-+ "###);
-+}
-diff --git a/third_party/rust/syn/tests/test_visibility.rs b/third_party/rust/syn/tests/test_visibility.rs
-new file mode 100644
---- /dev/null
-+++ b/third_party/rust/syn/tests/test_visibility.rs
-@@ -0,0 +1,145 @@
-+#[macro_use]
-+mod macros;
-+
-+use proc_macro2::{Delimiter, Group, Ident, Punct, Spacing, Span, TokenStream, TokenTree};
-+use std::iter::FromIterator;
-+use syn::parse::{Parse, ParseStream};
-+use syn::{DeriveInput, Result, Visibility};
-+
-+#[derive(Debug)]
-+struct VisRest {
-+ vis: Visibility,
-+ rest: TokenStream,
-+}
-+
-+impl Parse for VisRest {
-+ fn parse(input: ParseStream) -> Result<Self> {
-+ Ok(VisRest {
-+ vis: input.parse()?,
-+ rest: input.parse()?,
-+ })
-+ }
-+}
-+
-+macro_rules! assert_vis_parse {
-+ ($input:expr, Ok($p:pat)) => {
-+ assert_vis_parse!($input, Ok($p) + "");
-+ };
-+
-+ ($input:expr, Ok($p:pat) + $rest:expr) => {
-+ let expected = $rest.parse::<TokenStream>().unwrap();
-+ let parse: VisRest = syn::parse_str($input).unwrap();
-+
-+ match parse.vis {
-+ $p => {}
-+ _ => panic!("Expected {}, got {:?}", stringify!($p), parse.vis),
-+ }
-+
-+ // NOTE: Round-trips through `to_string` to avoid potential whitespace
-+ // diffs.
-+ assert_eq!(parse.rest.to_string(), expected.to_string());
-+ };
-+
-+ ($input:expr, Err) => {
-+ syn::parse2::<VisRest>($input.parse().unwrap()).unwrap_err();
-+ };
-+}
-+
-+#[test]
-+fn test_pub() {
-+ assert_vis_parse!("pub", Ok(Visibility::Public(_)));
-+}
-+
-+#[test]
-+fn test_crate() {
-+ assert_vis_parse!("crate", Ok(Visibility::Crate(_)));
-+}
-+
-+#[test]
-+fn test_inherited() {
-+ assert_vis_parse!("", Ok(Visibility::Inherited));
-+}
-+
-+#[test]
-+fn test_in() {
-+ assert_vis_parse!("pub(in foo::bar)", Ok(Visibility::Restricted(_)));
-+}
-+
-+#[test]
-+fn test_pub_crate() {
-+ assert_vis_parse!("pub(crate)", Ok(Visibility::Restricted(_)));
-+}
-+
-+#[test]
-+fn test_pub_self() {
-+ assert_vis_parse!("pub(self)", Ok(Visibility::Restricted(_)));
-+}
-+
-+#[test]
-+fn test_pub_super() {
-+ assert_vis_parse!("pub(super)", Ok(Visibility::Restricted(_)));
-+}
-+
-+#[test]
-+fn test_missing_in() {
-+ assert_vis_parse!("pub(foo::bar)", Ok(Visibility::Public(_)) + "(foo::bar)");
-+}
-+
-+#[test]
-+fn test_missing_in_path() {
-+ assert_vis_parse!("pub(in)", Err);
-+}
-+
-+#[test]
-+fn test_crate_path() {
-+ assert_vis_parse!("pub(crate::A, crate::B)", Ok(Visibility::Public(_)) + "(crate::A, crate::B)");
-+}
-+
-+#[test]
-+fn test_junk_after_in() {
-+ assert_vis_parse!("pub(in some::path @@garbage)", Err);
-+}
-+
-+#[test]
-+fn test_empty_group_vis() {
-+ // mimics `struct S { $vis $field: () }` where $vis is empty
-+ let tokens = TokenStream::from_iter(vec![
-+ TokenTree::Ident(Ident::new("struct", Span::call_site())),
-+ TokenTree::Ident(Ident::new("S", Span::call_site())),
-+ TokenTree::Group(Group::new(
-+ Delimiter::Brace,
-+ TokenStream::from_iter(vec![
-+ TokenTree::Group(Group::new(Delimiter::None, TokenStream::new())),
-+ TokenTree::Group(Group::new(
-+ Delimiter::None,
-+ TokenStream::from_iter(vec![TokenTree::Ident(Ident::new(
-+ "f",
-+ Span::call_site(),
-+ ))]),
-+ )),
-+ TokenTree::Punct(Punct::new(':', Spacing::Alone)),
-+ TokenTree::Group(Group::new(Delimiter::Parenthesis, TokenStream::new())),
-+ ]),
-+ )),
-+ ]);
-+
-+ snapshot!(tokens as DeriveInput, @r###"
-+ DeriveInput {
-+ vis: Inherited,
-+ ident: "S",
-+ generics: Generics,
-+ data: Data::Struct {
-+ fields: Fields::Named {
-+ named: [
-+ Field {
-+ vis: Inherited,
-+ ident: Some("f"),
-+ colon_token: Some,
-+ ty: Type::Tuple,
-+ },
-+ ],
-+ },
-+ },
-+ }
-+ "###);
-+}
-diff --git a/third_party/rust/syn/tests/zzz_stable.rs b/third_party/rust/syn/tests/zzz_stable.rs
---- a/third_party/rust/syn/tests/zzz_stable.rs
-+++ b/third_party/rust/syn/tests/zzz_stable.rs
-@@ -1,21 +1,19 @@
- #![cfg(syn_disable_nightly_tests)]
-
--extern crate termcolor;
--
- use std::io::{self, Write};
- use termcolor::{Color, ColorChoice, ColorSpec, StandardStream, WriteColor};
-
- const MSG: &str = "\
- ‖
- ‖ WARNING:
- ‖ This is not a nightly compiler so not all tests were able to
- ‖ run. Syn includes tests that compare Syn's parser against the
--‖ compiler's parser, which requires access to unstable libsyntax
-+‖ compiler's parser, which requires access to unstable librustc
- ‖ data structures and a nightly compiler.
- ‖
- ";
-
- #[test]
- fn notice() -> io::Result<()> {
- let header = "WARNING";
- let index_of_header = MSG.find(header).unwrap();
-
projects / packages / thunderbird.git / commitdiff