diff options
| author |   Patrick J Volkerding <volkerdi@slackware.com> | 2020-11-16 21:23:09 +0000 |
|---|---|---|
| committer |   Eric Hameleers <alien@slackware.com> | 2020-11-17 08:59:54 +0100 |
| commit | 272467a60bb9c300bdb0ba546ff821498ec27904 (patch) | |
| tree | c3e56f808e7d8dbaecd9bf16199c7edf6e7039c2 /source/xap/mozilla-firefox/rust_1.47.0.patch | |
| parent | afa84d07f6404ecde7102e1e1c3c31a8cfe16c21 (diff) | |
| download | current-272467a60bb9c300bdb0ba546ff821498ec27904.tar.gz current-272467a60bb9c300bdb0ba546ff821498ec27904.tar.xz | |
Mon Nov 16 21:23:09 UTC 202020201116212309
a/util-linux-2.36.1-x86_64-1.txz: Upgraded.
l/imagemagick-7.0.10_38-x86_64-1.txz: Upgraded.
l/lz4-1.9.3-x86_64-1.txz: Upgraded.
l/mozjs78-78.5.0esr-x86_64-1.txz: Upgraded.
n/ModemManager-1.14.8-x86_64-1.txz: Upgraded.
n/mutt-2.0.1-x86_64-1.txz: Upgraded.
xap/mozilla-firefox-78.5.0esr-x86_64-1.txz: Upgraded.
This is a bugfix release.
For more information, see:
https://www.mozilla.org/en-US/firefox/78.5.0/releasenotes/
Diffstat (limited to '')
| -rw-r--r-- | source/xap/mozilla-firefox/rust_1.47.0.patch | 30905 |
1 files changed, 0 insertions, 30905 deletions
diff --git a/source/xap/mozilla-firefox/rust_1.47.0.patch b/source/xap/mozilla-firefox/rust_1.47.0.patch deleted file mode 100644 index 9471b7bd4..000000000 --- a/source/xap/mozilla-firefox/rust_1.47.0.patch +++ /dev/null @@ -1,30905 +0,0 @@ -From 83fc2e3616ef15056be74f056a15e892038809b9 Mon Sep 17 00:00:00 2001 -From: Thomas Deutschmann <whissi@gentoo.org> -Date: Sat, 10 Oct 2020 16:10:20 +0200 -Subject: [PATCH 38/38] bmo#1663715: Update syn and proc-macro2 so that Firefox - can build on Rust nightly again - -Link: https://bugzilla.mozilla.org/show_bug.cgi?id=1663715#c7 -Signed-off-by: Thomas Deutschmann <whissi@gentoo.org> ---- - Cargo.lock | 8 +- - .../rust/lucet-wasi/.cargo-checksum.json | 2 +- - .../rust/packed_simd/.cargo-checksum.json | 2 +- - .../rust/proc-macro2/.cargo-checksum.json | 2 +- - third_party/rust/proc-macro2/Cargo.toml | 15 +- - third_party/rust/proc-macro2/README.md | 2 +- - third_party/rust/proc-macro2/build.rs | 20 + - third_party/rust/proc-macro2/src/detection.rs | 67 + - third_party/rust/proc-macro2/src/fallback.rs | 1010 ++---- - third_party/rust/proc-macro2/src/lib.rs | 225 +- - third_party/rust/proc-macro2/src/marker.rs | 18 + - third_party/rust/proc-macro2/src/parse.rs | 849 +++++ - third_party/rust/proc-macro2/src/strnom.rs | 391 --- - third_party/rust/proc-macro2/src/wrapper.rs | 258 +- - .../rust/proc-macro2/tests/comments.rs | 103 + - third_party/rust/proc-macro2/tests/marker.rs | 33 + - third_party/rust/proc-macro2/tests/test.rs | 240 +- - .../rust/proc-macro2/tests/test_fmt.rs | 26 + - .../spirv-cross-internal/.cargo-checksum.json | 2 +- - third_party/rust/syn/.cargo-checksum.json | 2 +- - third_party/rust/syn/Cargo.toml | 35 +- - third_party/rust/syn/README.md | 16 +- - third_party/rust/syn/benches/file.rs | 7 + - third_party/rust/syn/benches/rust.rs | 45 +- - third_party/rust/syn/build.rs | 38 +- - third_party/rust/syn/src/attr.rs | 126 +- - third_party/rust/syn/src/buffer.rs | 56 +- - third_party/rust/syn/src/custom_keyword.rs | 12 +- - .../rust/syn/src/custom_punctuation.rs | 50 +- - third_party/rust/syn/src/data.rs | 96 +- - third_party/rust/syn/src/derive.rs | 10 +- - third_party/rust/syn/src/discouraged.rs | 27 +- - third_party/rust/syn/src/error.rs | 33 +- - third_party/rust/syn/src/expr.rs | 826 +++-- - third_party/rust/syn/src/ext.rs | 12 +- - third_party/rust/syn/src/file.rs | 4 +- - third_party/rust/syn/src/gen/clone.rs | 2051 ++++++++++++ - third_party/rust/syn/src/gen/debug.rs | 2857 +++++++++++++++++ - third_party/rust/syn/src/gen/eq.rs | 1930 +++++++++++ - third_party/rust/syn/src/gen/fold.rs | 287 +- - third_party/rust/syn/src/gen/hash.rs | 2691 ++++++++++++++++ - third_party/rust/syn/src/gen/visit.rs | 19 +- - third_party/rust/syn/src/gen/visit_mut.rs | 19 +- - third_party/rust/syn/src/generics.rs | 255 +- - third_party/rust/syn/src/item.rs | 1515 +++++---- - third_party/rust/syn/src/keyword.rs | 0 - third_party/rust/syn/src/lib.rs | 109 +- - third_party/rust/syn/src/lifetime.rs | 13 +- - third_party/rust/syn/src/lit.rs | 581 ++-- - third_party/rust/syn/src/mac.rs | 55 +- - third_party/rust/syn/src/macros.rs | 61 +- - third_party/rust/syn/src/op.rs | 6 +- - third_party/rust/syn/src/parse.rs | 211 +- - third_party/rust/syn/src/parse_macro_input.rs | 32 +- - third_party/rust/syn/src/parse_quote.rs | 15 +- - third_party/rust/syn/src/pat.rs | 313 +- - third_party/rust/syn/src/path.rs | 33 +- - third_party/rust/syn/src/punctuated.rs | 123 +- - third_party/rust/syn/src/reserved.rs | 42 + - third_party/rust/syn/src/spanned.rs | 4 +- - third_party/rust/syn/src/stmt.rs | 141 +- - third_party/rust/syn/src/token.rs | 99 +- - third_party/rust/syn/src/tt.rs | 6 +- - third_party/rust/syn/src/ty.rs | 364 ++- - third_party/rust/syn/src/verbatim.rs | 15 + - third_party/rust/syn/src/whitespace.rs | 65 + - third_party/rust/syn/tests/clone.sh | 16 - - third_party/rust/syn/tests/common/eq.rs | 247 +- - third_party/rust/syn/tests/common/mod.rs | 13 + - third_party/rust/syn/tests/common/parse.rs | 24 +- - third_party/rust/syn/tests/debug/gen.rs | 50 +- - third_party/rust/syn/tests/debug/mod.rs | 17 +- - third_party/rust/syn/tests/features/error.rs | 1 - - third_party/rust/syn/tests/features/mod.rs | 22 - - third_party/rust/syn/tests/macros/mod.rs | 8 +- - third_party/rust/syn/tests/repo/mod.rs | 137 +- - third_party/rust/syn/tests/repo/progress.rs | 37 + - third_party/rust/syn/tests/test_asyncness.rs | 38 +- - third_party/rust/syn/tests/test_attribute.rs | 452 +-- - .../rust/syn/tests/test_derive_input.rs | 1321 ++++---- - third_party/rust/syn/tests/test_expr.rs | 314 +- - third_party/rust/syn/tests/test_generics.rs | 371 ++- - third_party/rust/syn/tests/test_grouping.rs | 53 +- - third_party/rust/syn/tests/test_ident.rs | 5 - - third_party/rust/syn/tests/test_item.rs | 45 + - third_party/rust/syn/tests/test_iterators.rs | 7 +- - third_party/rust/syn/tests/test_lit.rs | 75 +- - third_party/rust/syn/tests/test_meta.rs | 498 ++- - .../rust/syn/tests/test_parse_buffer.rs | 41 +- - .../rust/syn/tests/test_parse_stream.rs | 12 + - third_party/rust/syn/tests/test_pat.rs | 27 +- - third_party/rust/syn/tests/test_path.rs | 52 + - third_party/rust/syn/tests/test_precedence.rs | 196 +- - third_party/rust/syn/tests/test_receiver.rs | 127 + - third_party/rust/syn/tests/test_round_trip.rs | 41 +- - third_party/rust/syn/tests/test_shebang.rs | 59 + - .../rust/syn/tests/test_should_parse.rs | 4 - - third_party/rust/syn/tests/test_size.rs | 2 - - third_party/rust/syn/tests/test_stmt.rs | 44 + - .../rust/syn/tests/test_token_trees.rs | 12 +- - third_party/rust/syn/tests/test_ty.rs | 53 + - third_party/rust/syn/tests/test_visibility.rs | 145 + - third_party/rust/syn/tests/zzz_stable.rs | 4 +- - 103 files changed, 17319 insertions(+), 5831 deletions(-) - create mode 100644 third_party/rust/proc-macro2/src/detection.rs - create mode 100644 third_party/rust/proc-macro2/src/marker.rs - create mode 100644 third_party/rust/proc-macro2/src/parse.rs - delete mode 100644 third_party/rust/proc-macro2/src/strnom.rs - create mode 100644 third_party/rust/proc-macro2/tests/comments.rs - create mode 100644 third_party/rust/proc-macro2/tests/test_fmt.rs - create mode 100644 third_party/rust/syn/src/gen/clone.rs - create mode 100644 third_party/rust/syn/src/gen/debug.rs - create mode 100644 third_party/rust/syn/src/gen/eq.rs - create mode 100644 third_party/rust/syn/src/gen/hash.rs - delete mode 100644 third_party/rust/syn/src/keyword.rs - create mode 100644 third_party/rust/syn/src/reserved.rs - create mode 100644 third_party/rust/syn/src/verbatim.rs - create mode 100644 third_party/rust/syn/src/whitespace.rs - delete mode 100755 third_party/rust/syn/tests/clone.sh - delete mode 100644 third_party/rust/syn/tests/features/error.rs - delete mode 100644 third_party/rust/syn/tests/features/mod.rs - create mode 100644 third_party/rust/syn/tests/repo/progress.rs - create mode 100644 third_party/rust/syn/tests/test_item.rs - create mode 100644 third_party/rust/syn/tests/test_parse_stream.rs - create mode 100644 third_party/rust/syn/tests/test_path.rs - create mode 100644 third_party/rust/syn/tests/test_receiver.rs - create mode 100644 third_party/rust/syn/tests/test_shebang.rs - create mode 100644 third_party/rust/syn/tests/test_stmt.rs - create mode 100644 third_party/rust/syn/tests/test_ty.rs - create mode 100644 third_party/rust/syn/tests/test_visibility.rs - -diff --git a/Cargo.lock b/Cargo.lock -index 19117e8368..d5fe0f6457 100644 ---- a/Cargo.lock -+++ b/Cargo.lock -@@ -3717,9 +3717,9 @@ dependencies = [ - - [[package]] - name = "proc-macro2" --version = "1.0.5" -+version = "1.0.24" - source = "registry+https://github.com/rust-lang/crates.io-index" --checksum = "90cf5f418035b98e655e9cdb225047638296b862b42411c4e45bb88d700f7fc0" -+checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71" - dependencies = [ - "unicode-xid", - ] -@@ -4647,9 +4647,9 @@ dependencies = [ - - [[package]] - name = "syn" --version = "1.0.5" -+version = "1.0.40" - source = "registry+https://github.com/rust-lang/crates.io-index" --checksum = "66850e97125af79138385e9b88339cbcd037e3f28ceab8c5ad98e64f0f1f80bf" -+checksum = "963f7d3cc59b59b9325165add223142bbf1df27655d07789f109896d353d8350" - dependencies = [ - "proc-macro2", - "quote", -diff --git a/third_party/rust/lucet-wasi/.cargo-checksum.json b/third_party/rust/lucet-wasi/.cargo-checksum.json -index 229fc9978c..2c8c0a3c22 100644 ---- a/third_party/rust/lucet-wasi/.cargo-checksum.json -+++ b/third_party/rust/lucet-wasi/.cargo-checksum.json -@@ -1 +1 @@ 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-\ No newline at end of file -diff --git a/third_party/rust/proc-macro2/Cargo.toml b/third_party/rust/proc-macro2/Cargo.toml -index 95d653633d..22150c516a 100644 ---- a/third_party/rust/proc-macro2/Cargo.toml -+++ b/third_party/rust/proc-macro2/Cargo.toml -@@ -13,21 +13,22 @@ - [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 = "1.0.24" -+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] -@@ -39,5 +40,3 @@ 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 -index 19b0c3b5f8..3d05e871a7 100644 ---- a/third_party/rust/proc-macro2/README.md -+++ b/third_party/rust/proc-macro2/README.md -@@ -1,6 +1,6 @@ - # 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) - -diff --git a/third_party/rust/proc-macro2/build.rs b/third_party/rust/proc-macro2/build.rs -index deb9b92719..b247d874f6 100644 ---- a/third_party/rust/proc-macro2/build.rs -+++ b/third_party/rust/proc-macro2/build.rs -@@ -14,6 +14,10 @@ - // 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 -@@ -57,6 +61,22 @@ fn main() { - println!("cargo:rustc-cfg=span_locations"); - } - -+ if version.minor < 32 { -+ println!("cargo:rustc-cfg=no_libprocmacro_unwind_safe"); -+ } -+ -+ if version.minor < 39 { -+ println!("cargo:rustc-cfg=no_bind_by_move_pattern_guard"); -+ } -+ -+ if version.minor >= 44 { -+ println!("cargo:rustc-cfg=lexerror_display"); -+ } -+ -+ if version.minor >= 45 { -+ println!("cargo:rustc-cfg=hygiene"); -+ } -+ - let target = env::var("TARGET").unwrap(); - if !enable_use_proc_macro(&target) { - return; -diff --git a/third_party/rust/proc-macro2/src/detection.rs b/third_party/rust/proc-macro2/src/detection.rs -new file mode 100644 -index 0000000000..c597bc99c6 ---- /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 -index fe582b3b5f..8900c5ff0f 100644 ---- a/third_party/rust/proc-macro2/src/fallback.rs -+++ b/third_party/rust/proc-macro2/src/fallback.rs -@@ -1,27 +1,41 @@ -+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 { -@@ -31,6 +45,72 @@ impl TokenStream { - 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)] -@@ -59,20 +139,22 @@ impl FromStr for TokenStream { - // 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 LexError { -+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { -+ f.write_str("cannot parse string into token stream") -+ } -+} -+ -+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() { -@@ -80,37 +162,22 @@ impl fmt::Display for TokenStream { - 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)? -- } -- } -- 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, -- } -+ 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::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() -@@ -139,28 +206,26 @@ impl From<TokenStream> for proc_macro::TokenStream { - - 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 } -@@ -168,31 +233,30 @@ impl iter::FromIterator<TokenStream> for TokenStream { - } - - 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, - } - -@@ -208,7 +272,7 @@ impl SourceFile { - } - } - --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()) -@@ -218,7 +282,7 @@ impl fmt::Debug for SourceFile { - } - - #[derive(Clone, Copy, Debug, PartialEq, Eq)] --pub struct LineColumn { -+pub(crate) struct LineColumn { - pub line: usize, - pub column: usize, - } -@@ -228,23 +292,11 @@ 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], - }], - }); - } -@@ -282,16 +334,21 @@ impl FileInfo { - } - } - --/// 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)] -@@ -310,23 +367,22 @@ impl SourceMap { - } - - 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 -@@ -343,11 +399,11 @@ impl SourceMap { - } - - #[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 { -@@ -361,12 +417,16 @@ impl 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 -@@ -374,7 +434,6 @@ impl Span { - *self - } - -- #[cfg(procmacro2_semver_exempt)] - pub fn located_at(&self, other: Span) -> Span { - other - } -@@ -427,26 +486,59 @@ impl Span { - }) - }) - } -+ -+ #[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, -@@ -474,11 +566,11 @@ impl Group { - } - - 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) { -@@ -486,36 +578,45 @@ impl Group { - } - } - --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, -@@ -549,16 +650,14 @@ impl Ident { - } - } - --#[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 == '_' -@@ -615,18 +714,18 @@ where - } - } - --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)); -@@ -637,17 +736,17 @@ impl fmt::Debug for 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, - } -@@ -669,7 +768,7 @@ macro_rules! unsuffixed_numbers { - } - - impl Literal { -- fn _new(text: String) -> Literal { -+ pub(crate) fn _new(text: String) -> Literal { - Literal { - text, - span: Span::call_site(), -@@ -711,7 +810,7 @@ impl Literal { - - 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) -@@ -719,7 +818,7 @@ impl Literal { - - 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) -@@ -730,10 +829,10 @@ impl Literal { - 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('"'); -@@ -744,10 +843,10 @@ impl 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) -@@ -756,6 +855,7 @@ impl Literal { - 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"), -@@ -784,651 +884,17 @@ impl Literal { - } - } - --impl fmt::Display for Literal { -+impl Display for Literal { - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { -- self.text.fmt(f) -+ Display::fmt(&self.text, f) - } - } - --impl fmt::Debug for Literal { -+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)); -- #[cfg(procmacro2_semver_exempt)] -- debug.field("span", &self.span); -+ debug_span_field_if_nontrivial(&mut debug, 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), -- } --} -- --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) -- } --} -- --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 -index a08be3e815..c20fb50d4a 100644 ---- a/third_party/rust/proc-macro2/src/lib.rs -+++ b/third_party/rust/proc-macro2/src/lib.rs -@@ -78,27 +78,24 @@ - //! 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-macro2/1.0.24")] - #![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::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; -+mod marker; -+mod parse; -+ -+#[cfg(wrap_proc_macro)] -+mod detection; - --#[macro_use] --mod strnom; --mod fallback; -+// 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; -@@ -106,6 +103,17 @@ use crate::fallback as imp; - #[cfg(wrap_proc_macro)] - mod imp; - -+use crate::marker::Marker; -+use std::cmp::Ordering; -+use std::error::Error; -+use std::fmt::{self, Debug, Display}; -+use std::hash::{Hash, Hasher}; -+use std::iter::FromIterator; -+use std::ops::RangeBounds; -+#[cfg(procmacro2_semver_exempt)] -+use std::path::PathBuf; -+use std::str::FromStr; -+ - /// An abstract stream of tokens, or more concretely a sequence of token trees. - /// - /// This type provides interfaces for iterating over token trees and for -@@ -116,27 +124,27 @@ mod imp; - #[derive(Clone)] - pub struct TokenStream { - inner: imp::TokenStream, -- _marker: marker::PhantomData<Rc<()>>, -+ _marker: Marker, - } - - /// Error returned from `TokenStream::from_str`. - pub struct LexError { - inner: imp::LexError, -- _marker: marker::PhantomData<Rc<()>>, -+ _marker: Marker, - } - - impl TokenStream { - fn _new(inner: imp::TokenStream) -> TokenStream { - TokenStream { - inner, -- _marker: marker::PhantomData, -+ _marker: Marker, - } - } - - fn _new_stable(inner: fallback::TokenStream) -> TokenStream { - TokenStream { - inner: inner.into(), -- _marker: marker::PhantomData, -+ _marker: Marker, - } - } - -@@ -173,7 +181,7 @@ impl FromStr for TokenStream { - fn from_str(src: &str) -> Result<TokenStream, LexError> { - let e = src.parse().map_err(|e| LexError { - inner: e, -- _marker: marker::PhantomData, -+ _marker: Marker, - })?; - Ok(TokenStream::_new(e)) - } -@@ -228,25 +236,33 @@ impl FromIterator<TokenStream> for TokenStream { - /// 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 { -+ Debug::fmt(&self.inner, f) -+ } -+} -+ -+impl Debug for LexError { - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { -- self.inner.fmt(f) -+ Debug::fmt(&self.inner, f) - } - } - --impl fmt::Debug for LexError { -+impl Display for LexError { - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { -- self.inner.fmt(f) -+ Display::fmt(&self.inner, f) - } - } - -+impl Error for LexError {} -+ - /// The source file of a given `Span`. - /// - /// This type is semver exempt and not exposed by default. -@@ -254,7 +270,7 @@ impl fmt::Debug for LexError { - #[derive(Clone, PartialEq, Eq)] - pub struct SourceFile { - inner: imp::SourceFile, -- _marker: marker::PhantomData<Rc<()>>, -+ _marker: Marker, - } - - #[cfg(procmacro2_semver_exempt)] -@@ -262,7 +278,7 @@ impl SourceFile { - fn _new(inner: imp::SourceFile) -> Self { - SourceFile { - inner, -- _marker: marker::PhantomData, -+ _marker: Marker, - } - } - -@@ -291,9 +307,9 @@ impl SourceFile { - } - - #[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) - } - } - -@@ -311,25 +327,41 @@ pub struct LineColumn { - 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<()>>, -+ _marker: Marker, - } - - impl Span { - fn _new(inner: imp::Span) -> Span { - Span { - inner, -- _marker: marker::PhantomData, -+ _marker: Marker, - } - } - - fn _new_stable(inner: fallback::Span) -> Span { - Span { - inner: inner.into(), -- _marker: marker::PhantomData, -+ _marker: Marker, - } - } - -@@ -342,6 +374,16 @@ impl 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. -@@ -352,18 +394,12 @@ impl Span { - - /// 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)) - } -@@ -439,9 +475,9 @@ impl Span { - } - - /// 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) - } - } - -@@ -462,11 +498,11 @@ 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(), - } - } - -@@ -476,11 +512,11 @@ impl TokenTree { - /// 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), - } - } - } -@@ -513,32 +549,32 @@ impl From<Literal> for TokenTree { - /// 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), - } - } - } -@@ -651,15 +687,15 @@ impl Group { - /// 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) - } - } - -@@ -669,7 +705,7 @@ impl fmt::Debug for Group { - /// `Punct` with different forms of `Spacing` returned. - #[derive(Clone)] - pub struct Punct { -- op: char, -+ ch: char, - spacing: Spacing, - span: Span, - } -@@ -695,9 +731,9 @@ impl Punct { - /// - /// The returned `Punct` will have the default span of `Span::call_site()` - /// which can be further configured with the `set_span` method below. -- pub fn new(op: char, spacing: Spacing) -> Punct { -+ pub fn new(ch: char, spacing: Spacing) -> Punct { - Punct { -- op, -+ ch, - spacing, - span: Span::call_site(), - } -@@ -705,7 +741,7 @@ impl Punct { - - /// Returns the value of this punctuation character as `char`. - pub fn as_char(&self) -> char { -- self.op -+ self.ch - } - - /// Returns the spacing of this punctuation character, indicating whether -@@ -730,16 +766,16 @@ impl Punct { - - /// 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.ch, 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("char", &self.ch); - debug.field("spacing", &self.spacing); - imp::debug_span_field_if_nontrivial(&mut debug, self.span.inner); - debug.finish() -@@ -813,14 +849,14 @@ impl fmt::Debug for Punct { - #[derive(Clone)] - pub struct Ident { - inner: imp::Ident, -- _marker: marker::PhantomData<Rc<()>>, -+ _marker: Marker, - } - - impl Ident { - fn _new(inner: imp::Ident) -> Ident { - Ident { - inner, -- _marker: marker::PhantomData, -+ _marker: Marker, - } - } - -@@ -920,15 +956,15 @@ impl Hash for Ident { - - /// 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) - } - } - -@@ -941,7 +977,7 @@ impl fmt::Debug for Ident { - #[derive(Clone)] - pub struct Literal { - inner: imp::Literal, -- _marker: marker::PhantomData<Rc<()>>, -+ _marker: Marker, - } - - macro_rules! suffixed_int_literals { -@@ -988,14 +1024,14 @@ impl Literal { - fn _new(inner: imp::Literal) -> Literal { - Literal { - inner, -- _marker: marker::PhantomData, -+ _marker: Marker, - } - } - - fn _new_stable(inner: fallback::Literal) -> Literal { - Literal { - inner: inner.into(), -- _marker: marker::PhantomData, -+ _marker: Marker, - } - } - -@@ -1140,26 +1176,25 @@ impl Literal { - } - } - --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 std::marker; -- use std::rc::Rc; -+ use crate::marker::Marker; -+ use crate::{imp, TokenTree}; -+ use std::fmt::{self, Debug}; - - pub use crate::TokenStream; -- use crate::{imp, TokenTree}; - - /// An iterator over `TokenStream`'s `TokenTree`s. - /// -@@ -1168,7 +1203,7 @@ pub mod token_stream { - #[derive(Clone)] - pub struct IntoIter { - inner: imp::TokenTreeIter, -- _marker: marker::PhantomData<Rc<()>>, -+ _marker: Marker, - } - - impl Iterator for IntoIter { -@@ -1179,9 +1214,9 @@ pub mod token_stream { - } - } - -- 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) - } - } - -@@ -1192,7 +1227,7 @@ pub mod token_stream { - fn into_iter(self) -> IntoIter { - IntoIter { - inner: self.inner.into_iter(), -- _marker: marker::PhantomData, -+ _marker: Marker, - } - } - } -diff --git a/third_party/rust/proc-macro2/src/marker.rs b/third_party/rust/proc-macro2/src/marker.rs -new file mode 100644 -index 0000000000..58729baf4a ---- /dev/null -+++ b/third_party/rust/proc-macro2/src/marker.rs -@@ -0,0 +1,18 @@ -+use std::marker::PhantomData; -+use std::panic::{RefUnwindSafe, UnwindSafe}; -+use std::rc::Rc; -+ -+// Zero sized marker with the correct set of autotrait impls we want all proc -+// macro types to have. -+pub(crate) type Marker = PhantomData<ProcMacroAutoTraits>; -+ -+pub(crate) use self::value::*; -+ -+mod value { -+ pub(crate) use std::marker::PhantomData as Marker; -+} -+ -+pub(crate) struct ProcMacroAutoTraits(Rc<()>); -+ -+impl UnwindSafe for ProcMacroAutoTraits {} -+impl RefUnwindSafe for ProcMacroAutoTraits {} -diff --git a/third_party/rust/proc-macro2/src/parse.rs b/third_party/rust/proc-macro2/src/parse.rs -new file mode 100644 -index 0000000000..365fe0484d ---- /dev/null -+++ b/third_party/rust/proc-macro2/src/parse.rs -@@ -0,0 +1,849 @@ -+use crate::fallback::{ -+ is_ident_continue, is_ident_start, Group, LexError, Literal, Span, TokenStream, -+}; -+use crate::{Delimiter, Punct, Spacing, TokenTree}; -+use std::char; -+use std::str::{Bytes, CharIndices, Chars}; -+ -+#[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 is_ident_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)) = punct(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> { -+ if ["r\"", "r#\"", "r##", "b\"", "b\'", "br\"", "br#"] -+ .iter() -+ .any(|prefix| input.starts_with(prefix)) -+ { -+ Err(LexError) -+ } else { -+ ident_any(input) -+ } -+} -+ -+fn ident_any(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' => match chars.next() { -+ Some((_, '\n')) => {} -+ _ => 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((_, ch @ '\n')) | Some((_, ch @ '\r')) => { -+ let mut last = ch; -+ loop { -+ if last == '\r' && chars.next().map_or(true, |(_, ch)| ch != '\n') { -+ return Err(LexError); -+ } -+ match chars.peek() { -+ Some((_, ch)) if ch.is_whitespace() => { -+ last = *ch; -+ chars.next(); -+ } -+ _ => 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(); -+ while let Some((offset, b)) = bytes.next() { -+ match b { -+ b'"' => { -+ let input = input.advance(offset + 1); -+ return Ok(literal_suffix(input)); -+ } -+ b'\r' => match bytes.next() { -+ Some((_, b'\n')) => {} -+ _ => 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 @ b'\n')) | Some((newline, b @ b'\r')) => { -+ let mut last = b as char; -+ let rest = input.advance(newline + 1); -+ let mut chars = rest.char_indices(); -+ loop { -+ if last == '\r' && chars.next().map_or(true, |(_, ch)| ch != '\n') { -+ return Err(LexError); -+ } -+ match chars.next() { -+ Some((_, ch)) if ch.is_whitespace() => last = ch, -+ Some((offset, _)) => { -+ input = rest.advance(offset); -+ bytes = input.bytes().enumerate(); -+ break; -+ } -+ None => return Err(LexError), -+ } -+ } -+ } -+ _ => 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), -+ } -+ } -+ while let Some((i, ch)) = chars.next() { -+ 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' => match chars.next() { -+ Some((_, '\n')) => {} -+ _ => break, -+ }, -+ _ => {} -+ } -+ } -+ 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 @ '{'); -+ let mut value = 0; -+ let mut len = 0; -+ while let Some((_, ch)) = chars.next() { -+ let digit = match ch { -+ '0'..='9' => ch as u8 - b'0', -+ 'a'..='f' => 10 + ch as u8 - b'a', -+ 'A'..='F' => 10 + ch as u8 - b'A', -+ '_' if len > 0 => continue, -+ '}' if len > 0 => return char::from_u32(value).is_some(), -+ _ => return false, -+ }; -+ if len == 6 { -+ return false; -+ } -+ value *= 0x10; -+ value += u32::from(digit); -+ len += 1; -+ } -+ false -+} -+ -+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, -+ } -+ } -+ -+ if !(has_dot || has_exp) { -+ return Err(LexError); -+ } -+ -+ if has_exp { -+ let token_before_exp = if has_dot { -+ Ok(input.advance(len - 1)) -+ } else { -+ Err(LexError) -+ }; -+ let mut has_sign = false; -+ let mut has_exp_value = false; -+ while let Some(&ch) = chars.peek() { -+ match ch { -+ '+' | '-' => { -+ if has_exp_value { -+ break; -+ } -+ if has_sign { -+ return token_before_exp; -+ } -+ chars.next(); -+ len += 1; -+ has_sign = true; -+ } -+ '0'..='9' => { -+ chars.next(); -+ len += 1; -+ has_exp_value = true; -+ } -+ '_' => { -+ chars.next(); -+ len += 1; -+ } -+ _ => break, -+ } -+ } -+ if !has_exp_value { -+ return token_before_exp; -+ } -+ } -+ -+ 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() { -+ match b { -+ b'0'..=b'9' => { -+ let digit = (b - b'0') as u64; -+ if digit >= base { -+ return Err(LexError); -+ } -+ } -+ b'a'..=b'f' => { -+ let digit = 10 + (b - b'a') as u64; -+ if digit >= base { -+ break; -+ } -+ } -+ b'A'..=b'F' => { -+ let digit = 10 + (b - b'A') as u64; -+ if digit >= base { -+ break; -+ } -+ } -+ b'_' => { -+ if empty && base == 10 { -+ return Err(LexError); -+ } -+ len += 1; -+ continue; -+ } -+ _ => break, -+ }; -+ len += 1; -+ empty = false; -+ } -+ if empty { -+ Err(LexError) -+ } else { -+ Ok(input.advance(len)) -+ } -+} -+ -+fn punct(input: Cursor) -> PResult<Punct> { -+ match punct_char(input) { -+ Ok((rest, '\'')) => { -+ if ident_any(rest)?.0.starts_with("'") { -+ Err(LexError) -+ } else { -+ Ok((rest, Punct::new('\'', Spacing::Joint))) -+ } -+ } -+ Ok((rest, ch)) => { -+ let kind = match punct_char(rest) { -+ Ok(_) => Spacing::Joint, -+ Err(LexError) => Spacing::Alone, -+ }; -+ Ok((rest, Punct::new(ch, kind))) -+ } -+ Err(LexError) => Err(LexError), -+ } -+} -+ -+fn punct_char(input: Cursor) -> PResult<char> { -+ if input.starts_with("//") || input.starts_with("/*") { -+ // Do not accept `/` of a comment as a punct. -+ 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 -index eb7d0b8a8e..0000000000 ---- 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 -index 552b9381cf..3df044af17 100644 ---- a/third_party/rust/proc-macro2/src/wrapper.rs -+++ b/third_party/rust/proc-macro2/src/wrapper.rs -@@ -1,15 +1,15 @@ --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), - } -@@ -19,73 +19,16 @@ pub enum TokenStream { - // 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") - } -@@ -103,7 +46,12 @@ impl DeferredTokenStream { - } - - 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 { -@@ -114,7 +62,7 @@ impl DeferredTokenStream { - - 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()) -@@ -147,9 +95,9 @@ 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()?)) -@@ -157,11 +105,17 @@ impl FromStr for TokenStream { - } - } - --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), - } - } - } -@@ -187,7 +141,7 @@ impl From<fallback::TokenStream> for TokenStream { - } - } - --// 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(), -@@ -196,9 +150,9 @@ fn into_compiler_token(token: TokenTree) -> proc_macro::TokenTree { - Spacing::Joint => proc_macro::Spacing::Joint, - Spacing::Alone => proc_macro::Spacing::Alone, - }; -- let mut op = proc_macro::Punct::new(tt.as_char(), spacing); -- op.set_span(tt.span().inner.unwrap_nightly()); -- op.into() -+ let mut punct = proc_macro::Punct::new(tt.as_char(), spacing); -+ punct.set_span(tt.span().inner.unwrap_nightly()); -+ punct.into() - } - TokenTree::Ident(tt) => tt.inner.unwrap_nightly().into(), - TokenTree::Literal(tt) => tt.inner.unwrap_nightly().into(), -@@ -207,7 +161,7 @@ fn into_compiler_token(token: TokenTree) -> proc_macro::TokenTree { - - 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()) -@@ -215,9 +169,9 @@ impl From<TokenTree> for TokenStream { - } - } - --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(), - )) -@@ -227,7 +181,7 @@ impl iter::FromIterator<TokenTree> for TokenStream { - } - } - --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() { -@@ -252,14 +206,15 @@ impl iter::FromIterator<TokenStream> for TokenStream { - } - - 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), - } - } - } -@@ -270,20 +225,20 @@ impl Extend<TokenStream> for TokenStream { - 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), - } - } - } -@@ -300,17 +255,29 @@ impl From<fallback::LexError> for LexError { - } - } - --impl fmt::Debug for LexError { -+impl Debug for LexError { -+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { -+ match self { -+ LexError::Compiler(e) => Debug::fmt(e, f), -+ LexError::Fallback(e) => Debug::fmt(e, f), -+ } -+ } -+} -+ -+impl Display 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), -+ #[cfg(lexerror_display)] -+ LexError::Compiler(e) => Display::fmt(e, f), -+ #[cfg(not(lexerror_display))] -+ LexError::Compiler(_e) => Display::fmt(&fallback::LexError, f), -+ LexError::Fallback(e) => Display::fmt(e, f), - } - } - } - - #[derive(Clone)] --pub enum TokenTreeIter { -+pub(crate) enum TokenTreeIter { - Compiler(proc_macro::token_stream::IntoIter), - Fallback(fallback::TokenTreeIter), - } -@@ -361,7 +328,7 @@ impl Iterator for TokenTreeIter { - } - } - --impl fmt::Debug for TokenTreeIter { -+impl Debug for TokenTreeIter { - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { - f.debug_struct("TokenTreeIter").finish() - } -@@ -369,7 +336,7 @@ impl fmt::Debug for TokenTreeIter { - - #[derive(Clone, PartialEq, Eq)] - #[cfg(super_unstable)] --pub enum SourceFile { -+pub(crate) enum SourceFile { - Compiler(proc_macro::SourceFile), - Fallback(fallback::SourceFile), - } -@@ -397,58 +364,77 @@ impl SourceFile { - } - - #[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(), - } -@@ -542,16 +528,16 @@ impl From<fallback::Span> for Span { - } - } - --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); -@@ -561,7 +547,7 @@ pub fn debug_span_field_if_nontrivial(debug: &mut fmt::DebugStruct, span: Span) - } - - #[derive(Clone)] --pub enum Group { -+pub(crate) enum Group { - Compiler(proc_macro::Group), - Fallback(fallback::Group), - } -@@ -652,26 +638,26 @@ impl From<fallback::Group> for Group { - } - } - --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), - } -@@ -747,26 +733,26 @@ where - } - } - --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), - } -@@ -774,7 +760,7 @@ pub enum 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::$name(n)) -@@ -786,7 +772,7 @@ macro_rules! suffixed_numbers { - macro_rules! unsuffixed_integers { - ($($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)) -@@ -830,7 +816,7 @@ impl Literal { - } - - 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)) -@@ -838,7 +824,7 @@ impl Literal { - } - - 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)) -@@ -846,7 +832,7 @@ impl Literal { - } - - 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)) -@@ -854,7 +840,7 @@ impl Literal { - } - - 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)) -@@ -862,7 +848,7 @@ impl Literal { - } - - 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)) -@@ -908,20 +894,20 @@ impl From<fallback::Literal> for Literal { - } - } - --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 -index 0000000000..708cccb880 ---- /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/marker.rs b/third_party/rust/proc-macro2/tests/marker.rs -index 7af2539c1a..70e57677cd 100644 ---- a/third_party/rust/proc-macro2/tests/marker.rs -+++ b/third_party/rust/proc-macro2/tests/marker.rs -@@ -57,3 +57,36 @@ mod semver_exempt { - - assert_impl!(SourceFile is not Send or Sync); - } -+ -+#[cfg(not(no_libprocmacro_unwind_safe))] -+mod unwind_safe { -+ use super::*; -+ use std::panic::{RefUnwindSafe, UnwindSafe}; -+ -+ macro_rules! assert_unwind_safe { -+ ($($types:ident)*) => { -+ $( -+ assert_impl!($types is UnwindSafe and RefUnwindSafe); -+ )* -+ }; -+ } -+ -+ assert_unwind_safe! { -+ Delimiter -+ Group -+ Ident -+ LexError -+ Literal -+ Punct -+ Spacing -+ Span -+ TokenStream -+ TokenTree -+ } -+ -+ #[cfg(procmacro2_semver_exempt)] -+ assert_unwind_safe! { -+ LineColumn -+ SourceFile -+ } -+} -diff --git a/third_party/rust/proc-macro2/tests/test.rs b/third_party/rust/proc-macro2/tests/test.rs -index 7528388138..1e9f633944 100644 ---- a/third_party/rust/proc-macro2/tests/test.rs -+++ b/third_party/rust/proc-macro2/tests/test.rs -@@ -1,7 +1,6 @@ -+use proc_macro2::{Ident, Literal, Punct, Spacing, Span, TokenStream, TokenTree}; - use std::str::{self, FromStr}; - --use proc_macro2::{Ident, Literal, Spacing, Span, TokenStream, TokenTree}; -- - #[test] - fn idents() { - assert_eq!( -@@ -84,6 +83,11 @@ fn literal_string() { - assert_eq!(Literal::string("didn't").to_string(), "\"didn't\""); - } - -+#[test] -+fn literal_raw_string() { -+ "r\"\r\n\"".parse::<TokenStream>().unwrap(); -+} -+ - #[test] - fn literal_character() { - assert_eq!(Literal::character('x').to_string(), "'x'"); -@@ -110,6 +114,37 @@ fn literal_suffix() { - 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); -+ assert_eq!(token_count("0E"), 1); -+ assert_eq!(token_count("0o0A"), 1); -+ assert_eq!(token_count("0E--0"), 4); -+ assert_eq!(token_count("0.0ECMA"), 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] -@@ -161,41 +196,21 @@ fn fail() { - fail("' static"); - fail("r#1"); - fail("r#_"); -+ fail("\"\\u{0000000}\""); // overlong unicode escape (rust allows at most 6 hex digits) -+ fail("\"\\u{999999}\""); // outside of valid range of char -+ fail("\"\\u{_0}\""); // leading underscore -+ fail("\"\\u{}\""); // empty -+ fail("b\"\r\""); // bare carriage return in byte string -+ fail("r\"\r\""); // bare carriage return in raw string -+ fail("\"\\\r \""); // backslash carriage return -+ fail("'aa'aa"); -+ fail("br##\"\"#"); -+ fail("\"\\\n\u{85}\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 -@@ -274,53 +289,11 @@ fn span_join() { - #[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()); -+ assert!(s.parse::<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); --} -- --#[test] --fn op_before_comment() { -+fn punct_before_comment() { - let mut tts = TokenStream::from_str("~// comment").unwrap().into_iter(); - match tts.next().unwrap() { - TokenTree::Punct(tt) => { -@@ -331,6 +304,22 @@ fn op_before_comment() { - } - } - -+#[test] -+fn joint_last_token() { -+ // This test verifies that we match the behavior of libproc_macro *not* in -+ // the range nightly-2020-09-06 through nightly-2020-09-10, in which this -+ // behavior was temporarily broken. -+ // See https://github.com/rust-lang/rust/issues/76399 -+ -+ let joint_punct = Punct::new(':', Spacing::Joint); -+ let stream = TokenStream::from(TokenTree::Punct(joint_punct)); -+ let punct = match stream.into_iter().next().unwrap() { -+ TokenTree::Punct(punct) => punct, -+ _ => unreachable!(), -+ }; -+ assert_eq!(punct.spacing(), Spacing::Joint); -+} -+ - #[test] - fn raw_identifier() { - let mut tts = TokenStream::from_str("r#dyn").unwrap().into_iter(); -@@ -345,11 +334,11 @@ fn raw_identifier() { - 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)); - } -@@ -358,7 +347,7 @@ fn test_debug_ident() { - 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 { -@@ -368,7 +357,7 @@ TokenStream [ - sym: a, - }, - Punct { -- op: '+', -+ char: '+', - spacing: Alone, - }, - Literal { -@@ -379,7 +368,7 @@ TokenStream [ - ]\ - "; - -- #[cfg(not(procmacro2_semver_exempt))] -+ #[cfg(not(span_locations))] - let expected_before_trailing_commas = "\ - TokenStream [ - Group { -@@ -389,7 +378,7 @@ TokenStream [ - sym: a - }, - Punct { -- op: '+', -+ char: '+', - spacing: Alone - }, - Literal { -@@ -400,7 +389,7 @@ TokenStream [ - ]\ - "; - -- #[cfg(procmacro2_semver_exempt)] -+ #[cfg(span_locations)] - let expected = "\ - TokenStream [ - Group { -@@ -411,7 +400,7 @@ TokenStream [ - span: bytes(2..3), - }, - Punct { -- op: '+', -+ char: '+', - spacing: Alone, - span: bytes(4..5), - }, -@@ -425,7 +414,7 @@ TokenStream [ - ]\ - "; - -- #[cfg(procmacro2_semver_exempt)] -+ #[cfg(span_locations)] - let expected_before_trailing_commas = "\ - TokenStream [ - Group { -@@ -436,7 +425,7 @@ TokenStream [ - span: bytes(2..3) - }, - Punct { -- op: '+', -+ char: '+', - spacing: Alone, - span: bytes(4..5) - }, -@@ -464,3 +453,80 @@ fn default_tokenstream_is_empty() { - - 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 -index 0000000000..99a0aee5c8 ---- /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/spirv-cross-internal/.cargo-checksum.json b/third_party/rust/spirv-cross-internal/.cargo-checksum.json -index 3c732d6d0e..014aa640e1 100644 ---- a/third_party/rust/spirv-cross-internal/.cargo-checksum.json -+++ b/third_party/rust/spirv-cross-internal/.cargo-checksum.json -@@ -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 -index 7a5c962f06..20277fc461 100644 ---- a/third_party/rust/syn/Cargo.toml -+++ b/third_party/rust/syn/Cargo.toml -@@ -13,7 +13,7 @@ - [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" -@@ -24,25 +24,21 @@ 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] -@@ -52,18 +48,34 @@ 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" - -@@ -80,7 +92,6 @@ 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 -index 29a7f32a46..12b5f45b3d 100644 ---- a/third_party/rust/syn/README.md -+++ b/third_party/rust/syn/README.md -@@ -1,10 +1,10 @@ - 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. -@@ -46,10 +46,6 @@ contains some APIs that may be useful more generally. - [`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) -@@ -88,8 +84,6 @@ proc-macro = true - ``` - - ```rust --extern crate proc_macro; -- - use proc_macro::TokenStream; - use quote::quote; - use syn::{parse_macro_input, DeriveInput}; -@@ -271,7 +265,7 @@ 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> - -diff --git a/third_party/rust/syn/benches/file.rs b/third_party/rust/syn/benches/file.rs -index 08ecd90960..58ab8df297 100644 ---- a/third_party/rust/syn/benches/file.rs -+++ b/third_party/rust/syn/benches/file.rs -@@ -1,9 +1,16 @@ - // $ 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; - -diff --git a/third_party/rust/syn/benches/rust.rs b/third_party/rust/syn/benches/rust.rs -index e3d9cd29ba..50e1a7f601 100644 ---- a/third_party/rust/syn/benches/rust.rs -+++ b/third_party/rust/syn/benches/rust.rs -@@ -4,7 +4,14 @@ - // $ 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; - -@@ -28,31 +35,35 @@ mod syn_parse { - } - - #[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, -@@ -104,11 +115,11 @@ 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<(), ()>), - )* - ] - }; -@@ -128,12 +139,12 @@ fn main() { - - 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); -diff --git a/third_party/rust/syn/build.rs b/third_party/rust/syn/build.rs -index c0f9ed3406..cf7681c3f9 100644 ---- a/third_party/rust/syn/build.rs -+++ b/third_party/rust/syn/build.rs -@@ -1,6 +1,6 @@ - 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 -@@ -26,38 +26,14 @@ struct Compiler { - } - - 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 -index 34009deabc..fa4f1cb2a3 100644 ---- a/third_party/rust/syn/src/attr.rs -+++ b/third_party/rust/syn/src/attr.rs -@@ -9,15 +9,11 @@ use proc_macro2::TokenStream; - 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> -@@ -111,7 +107,46 @@ ast_struct! { - /// - /// [`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, -@@ -120,39 +155,11 @@ ast_struct! { - } - } - --#[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> { -@@ -199,7 +206,7 @@ impl Attribute { - /// ^^^^^^^^^ 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> { -@@ -208,7 +215,7 @@ impl Attribute { - - /// 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> { -@@ -221,7 +228,7 @@ impl Attribute { - - /// 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>> { -@@ -234,7 +241,7 @@ impl Attribute { - - /// 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>> { -@@ -247,7 +254,7 @@ impl Attribute { - } - - #[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(_) => "#!", -@@ -261,19 +268,23 @@ fn error_expected_args(attr: &Attribute) -> Error { - 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; -@@ -298,7 +309,7 @@ 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 -@@ -312,7 +323,6 @@ ast_enum! { - /// - `#![feature(proc_macro)]` - /// - `//! # Example` - /// - `/*! Please file an issue */` -- #[cfg_attr(feature = "clone-impls", derive(Copy))] - pub enum AttrStyle { - Outer, - Inner(Token![!]), -@@ -322,7 +332,7 @@ ast_enum! { - 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 -@@ -360,7 +370,7 @@ ast_enum_of_structs! { - 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, -@@ -372,7 +382,7 @@ ast_struct! { - 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, -@@ -398,7 +408,7 @@ impl Meta { - 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 -@@ -429,8 +439,8 @@ ast_enum_of_structs! { - /// as type `AttributeArgs`. - /// - /// ``` --/// extern crate proc_macro; --/// -+/// # extern crate proc_macro; -+/// # - /// use proc_macro::TokenStream; - /// use syn::{parse_macro_input, AttributeArgs, ItemFn}; - /// -@@ -464,7 +474,7 @@ where - fn is_outer(attr: &&Attribute) -> bool { - match attr.style { - AttrStyle::Outer => true, -- _ => false, -+ AttrStyle::Inner(_) => false, - } - } - self.into_iter().filter(is_outer) -@@ -474,7 +484,7 @@ where - fn is_inner(attr: &&Attribute) -> bool { - match attr.style { - AttrStyle::Inner(_) => true, -- _ => false, -+ AttrStyle::Outer => false, - } - } - self.into_iter().filter(is_inner) -diff --git a/third_party/rust/syn/src/buffer.rs b/third_party/rust/syn/src/buffer.rs -index 551a5ac816..a461cc49ea 100644 ---- a/third_party/rust/syn/src/buffer.rs -+++ b/third_party/rust/syn/src/buffer.rs -@@ -1,7 +1,7 @@ - //! 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 -@@ -36,7 +36,7 @@ enum Entry { - /// `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 -@@ -98,7 +98,7 @@ impl TokenBuffer { - /// 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"))), -@@ -133,8 +133,7 @@ impl TokenBuffer { - /// 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, -@@ -201,13 +200,13 @@ impl<'a> 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 -@@ -215,13 +214,14 @@ impl<'a> Cursor<'a> { - 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 -@@ -342,6 +342,44 @@ impl<'a> Cursor<'a> { - 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 { -diff --git a/third_party/rust/syn/src/custom_keyword.rs b/third_party/rust/syn/src/custom_keyword.rs -index 200e8478ef..a33044a564 100644 ---- a/third_party/rust/syn/src/custom_keyword.rs -+++ b/third_party/rust/syn/src/custom_keyword.rs -@@ -86,7 +86,7 @@ - /// } - /// } - /// ``` --#[macro_export(local_inner_macros)] -+#[macro_export] - macro_rules! custom_keyword { - ($ident:ident) => { - #[allow(non_camel_case_types)] -@@ -95,7 +95,7 @@ macro_rules! custom_keyword { - } - - #[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, - ) -> $ident { -@@ -112,10 +112,10 @@ macro_rules! custom_keyword { - } - } - -- impl_parse_for_custom_keyword!($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); - }; - } - -diff --git a/third_party/rust/syn/src/custom_punctuation.rs b/third_party/rust/syn/src/custom_punctuation.rs -index 29fa448bd8..70dff42851 100644 ---- a/third_party/rust/syn/src/custom_punctuation.rs -+++ b/third_party/rust/syn/src/custom_punctuation.rs -@@ -74,19 +74,19 @@ - /// 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: $crate::export::IntoSpans::into_spans(spans) - } -@@ -98,33 +98,33 @@ macro_rules! custom_punctuation { - } - } - -- impl_parse_for_custom_punctuation!($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)) - } - } -@@ -142,12 +142,12 @@ macro_rules! impl_parse_for_custom_punctuation { - // 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) - } - } - }; -@@ -221,16 +221,16 @@ macro_rules! impl_extra_traits_for_custom_punctuation { - - // 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 }; -@@ -279,7 +279,7 @@ macro_rules! custom_punctuation_len { - ($mode:ident, -=) => { 2 }; - ($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. -@@ -297,13 +297,3 @@ macro_rules! stringify_punct { - 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 -index be43679874..b217b8ca6f 100644 ---- a/third_party/rust/syn/src/data.rs -+++ b/third_party/rust/syn/src/data.rs -@@ -4,7 +4,7 @@ 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. -@@ -24,7 +24,7 @@ ast_struct! { - 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 -@@ -52,7 +52,7 @@ 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, -@@ -63,7 +63,7 @@ ast_struct! { - 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, -@@ -93,6 +93,24 @@ impl Fields { - 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 { -@@ -129,7 +147,7 @@ impl<'a> IntoIterator for &'a mut Fields { - 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. -@@ -154,7 +172,7 @@ 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 -@@ -184,7 +202,7 @@ ast_enum_of_structs! { - 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], -@@ -194,7 +212,7 @@ ast_struct! { - 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], -@@ -205,7 +223,7 @@ 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], -@@ -220,12 +238,15 @@ 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) { -@@ -295,6 +316,17 @@ pub mod parsing { - - 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]) { -@@ -310,27 +342,39 @@ pub mod parsing { - 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]) - { -- 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)?)), -- })); -+ 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: Some(content.parse()?), -- path: Box::new(content.call(Path::parse_mod_style)?), -+ paren_token, -+ in_token: Some(in_token), -+ path: Box::new(path), - })); - } - } -@@ -347,6 +391,14 @@ pub mod parsing { - })) - } - } -+ -+ #[cfg(feature = "full")] -+ pub(crate) fn is_some(&self) -> bool { -+ match self { -+ Visibility::Inherited => false, -+ _ => true, -+ } -+ } - } - } - -diff --git a/third_party/rust/syn/src/derive.rs b/third_party/rust/syn/src/derive.rs -index 8cb9cf7b6d..3fa9d89a93 100644 ---- a/third_party/rust/syn/src/derive.rs -+++ b/third_party/rust/syn/src/derive.rs -@@ -4,7 +4,7 @@ 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>, -@@ -26,7 +26,7 @@ ast_struct! { - 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 - /// -@@ -53,7 +53,7 @@ ast_enum_of_structs! { - 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], -@@ -65,7 +65,7 @@ ast_struct! { - 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], -@@ -77,7 +77,7 @@ ast_struct! { - 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], -diff --git a/third_party/rust/syn/src/discouraged.rs b/third_party/rust/syn/src/discouraged.rs -index 4d9ff93728..76c9fce6f8 100644 ---- a/third_party/rust/syn/src/discouraged.rs -+++ b/third_party/rust/syn/src/discouraged.rs -@@ -16,7 +16,7 @@ pub trait Speculative { - /// 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 -@@ -72,7 +72,6 @@ pub trait Speculative { - /// || 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)); -@@ -164,6 +163,30 @@ impl<'a> Speculative for ParseBuffer<'a> { - 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 -index 146d652299..dba34f9254 100644 ---- a/third_party/rust/syn/src/error.rs -+++ b/third_party/rust/syn/src/error.rs -@@ -1,4 +1,3 @@ --use std; - use std::fmt::{self, Debug, Display}; - use std::iter::FromIterator; - use std::slice; -@@ -32,8 +31,8 @@ pub type Result<T> = std::result::Result<T, Error>; - /// conversion to `compile_error!` automatically. - /// - /// ``` --/// extern crate proc_macro; --/// -+/// # extern crate proc_macro; -+/// # - /// use proc_macro::TokenStream; - /// use syn::{parse_macro_input, AttributeArgs, ItemFn}; - /// -@@ -82,7 +81,6 @@ pub type Result<T> = std::result::Result<T, Error>; - /// # } - /// # } - /// ``` --#[derive(Clone)] - pub struct Error { - messages: Vec<ErrorMessage>, - } -@@ -250,6 +248,17 @@ pub fn new_at<T: Display>(scope: Span, cursor: Cursor, message: T) -> Error { - } - } - -+#[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 { -@@ -278,6 +287,14 @@ impl Display for Error { - } - } - -+impl Clone for Error { -+ fn clone(&self) -> Self { -+ Error { -+ messages: self.messages.clone(), -+ } -+ } -+} -+ - impl Clone for ErrorMessage { - fn clone(&self) -> Self { - let start = self -@@ -355,3 +372,11 @@ impl<'a> Iterator for Iter<'a> { - }) - } - } -+ -+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 -index 2874a463aa..2fe0e0b5d8 100644 ---- a/third_party/rust/syn/src/expr.rs -+++ b/third_party/rust/syn/src/expr.rs -@@ -1,18 +1,21 @@ - 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 - /// -@@ -83,7 +86,7 @@ ast_enum_of_structs! { - /// 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), - -@@ -228,7 +231,7 @@ ast_enum_of_structs! { - 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, -@@ -239,7 +242,7 @@ ast_struct! { - 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>, -@@ -251,7 +254,7 @@ ast_struct! { - 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>, -@@ -263,7 +266,7 @@ ast_struct! { - 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], -@@ -275,7 +278,7 @@ ast_struct! { - 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>, -@@ -287,7 +290,7 @@ ast_struct! { - 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>, -@@ -300,7 +303,7 @@ ast_struct! { - 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>, -@@ -311,7 +314,7 @@ ast_struct! { - 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], -@@ -323,7 +326,7 @@ 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], -@@ -335,7 +338,7 @@ ast_struct! { - 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>, -@@ -348,7 +351,7 @@ ast_struct! { - 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>, -@@ -361,7 +364,7 @@ ast_struct! { - 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]>, -@@ -378,7 +381,7 @@ ast_struct! { - 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], -@@ -390,7 +393,7 @@ 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>, -@@ -402,7 +405,7 @@ ast_struct! { - 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>, -@@ -421,7 +424,7 @@ ast_struct! { - /// 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, -@@ -436,7 +439,7 @@ ast_struct! { - /// 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], -@@ -449,7 +452,7 @@ ast_struct! { - 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>, -@@ -462,7 +465,7 @@ ast_struct! { - 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], -@@ -475,7 +478,7 @@ ast_struct! { - 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>, -@@ -486,7 +489,7 @@ ast_struct! { - 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>, -@@ -498,7 +501,7 @@ ast_struct! { - 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, -@@ -508,7 +511,7 @@ ast_struct! { - 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], -@@ -521,7 +524,7 @@ ast_struct! { - 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>, -@@ -536,7 +539,7 @@ ast_struct! { - 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, -@@ -550,7 +553,7 @@ ast_struct! { - /// - /// 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>, -@@ -562,7 +565,7 @@ ast_struct! { - 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>>, -@@ -574,7 +577,7 @@ ast_struct! { - 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![&], -@@ -587,7 +590,7 @@ ast_struct! { - 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, -@@ -600,7 +603,7 @@ ast_struct! { - 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], -@@ -614,7 +617,7 @@ ast_struct! { - /// 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, -@@ -628,7 +631,7 @@ ast_struct! { - 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>, -@@ -639,7 +642,7 @@ ast_struct! { - 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], -@@ -650,7 +653,7 @@ ast_struct! { - 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, -@@ -661,7 +664,7 @@ ast_struct! { - 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>, -@@ -673,7 +676,7 @@ ast_struct! { - 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>, -@@ -685,7 +688,7 @@ ast_struct! { - 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], -@@ -696,7 +699,7 @@ ast_struct! { - 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>, -@@ -709,7 +712,7 @@ ast_struct! { - 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], -@@ -717,232 +720,6 @@ ast_struct! { - } - } - --#[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> { -@@ -996,7 +773,7 @@ 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`. -@@ -1006,12 +783,50 @@ ast_enum! { - } - } - -+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, - } -@@ -1027,28 +842,28 @@ impl From<usize> for Index { - } - } - --#[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) - } - } - -@@ -1057,7 +872,7 @@ 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![<], -@@ -1070,7 +885,7 @@ ast_struct! { - 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), -@@ -1086,7 +901,7 @@ ast_enum! { - 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>, -@@ -1107,7 +922,7 @@ ast_struct! { - 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![:], -@@ -1134,7 +949,7 @@ ast_struct! { - /// # } - /// ``` - /// -- /// *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, -@@ -1149,8 +964,7 @@ ast_struct! { - 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![..]), -@@ -1162,7 +976,7 @@ ast_enum! { - #[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(..) -@@ -1183,16 +997,17 @@ pub(crate) mod parsing { - - 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, -@@ -1246,9 +1061,121 @@ pub(crate) mod parsing { - } - } - -- #[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")] -@@ -1430,56 +1357,84 @@ pub(crate) mod parsing { - 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)?), - })) -@@ -1495,13 +1450,11 @@ pub(crate) mod parsing { - // <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)?; - -@@ -1523,18 +1476,26 @@ pub(crate) mod parsing { - 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 { -@@ -1620,10 +1581,17 @@ pub(crate) mod parsing { - }); - } 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) { -@@ -1646,7 +1614,11 @@ pub(crate) mod parsing { - // 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) -@@ -1668,7 +1640,6 @@ pub(crate) mod parsing { - || 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) -@@ -1740,7 +1711,6 @@ pub(crate) mod parsing { - || 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) -@@ -1878,7 +1848,7 @@ pub(crate) mod parsing { - - #[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]) { -@@ -1905,7 +1875,7 @@ pub(crate) mod parsing { - 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())); -@@ -1951,7 +1921,16 @@ pub(crate) mod parsing { - - #[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) - } - -@@ -1960,44 +1939,20 @@ pub(crate) mod parsing { - 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]) { -@@ -2033,29 +1988,14 @@ pub(crate) mod parsing { - #[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); -@@ -2063,7 +2003,7 @@ pub(crate) mod parsing { - let stmts = content.call(Block::parse_within)?; - - Ok(ExprForLoop { -- attrs: inner_attrs, -+ attrs: private::attrs(outer_attrs, inner_attrs), - label, - for_token, - pat, -@@ -2077,6 +2017,7 @@ pub(crate) mod parsing { - #[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()?; - -@@ -2086,7 +2027,7 @@ pub(crate) mod parsing { - 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 }, -@@ -2097,8 +2038,9 @@ pub(crate) mod parsing { - #[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); -@@ -2110,7 +2052,7 @@ pub(crate) mod parsing { - } - - Ok(ExprMatch { -- attrs: inner_attrs, -+ attrs: private::attrs(outer_attrs, inner_attrs), - match_token, - expr: Box::new(expr), - brace_token, -@@ -2305,9 +2247,10 @@ pub(crate) mod parsing { - #[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); -@@ -2315,7 +2258,7 @@ pub(crate) mod parsing { - 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), -@@ -2399,6 +2342,7 @@ 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()?; -@@ -2416,7 +2360,7 @@ pub(crate) mod parsing { - }; - - Ok(FieldValue { -- attrs: Vec::new(), -+ attrs, - member, - colon_token, - expr: value, -@@ -2433,46 +2377,36 @@ pub(crate) mod parsing { - 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, - }) - } - -@@ -2577,27 +2511,7 @@ pub(crate) mod parsing { - 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()?; -@@ -2641,6 +2555,26 @@ pub(crate) mod parsing { - } - } - -+ 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 { -diff --git a/third_party/rust/syn/src/ext.rs b/third_party/rust/syn/src/ext.rs -index d09577a27a..4f9bc145d9 100644 ---- a/third_party/rust/syn/src/ext.rs -+++ b/third_party/rust/syn/src/ext.rs -@@ -1,6 +1,6 @@ - //! 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; - -@@ -16,7 +16,7 @@ use crate::token::CustomToken; - /// 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. - /// -@@ -129,7 +129,13 @@ mod private { - - 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 -index 88c02fe832..c8fab63cd9 100644 ---- a/third_party/rust/syn/src/file.rs -+++ b/third_party/rust/syn/src/file.rs -@@ -3,7 +3,7 @@ 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 - /// -@@ -37,6 +37,8 @@ ast_struct! { - /// 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); - /// } - /// ``` -diff --git a/third_party/rust/syn/src/gen/clone.rs b/third_party/rust/syn/src/gen/clone.rs -new file mode 100644 -index 0000000000..bea3887013 ---- /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 -index 0000000000..72baab05f4 ---- /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 -index 0000000000..15b2bcbbde ---- /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 -index f51218b78c..d9dd32a420 100644 ---- a/third_party/rust/syn/src/gen/fold.rs -+++ b/third_party/rust/syn/src/gen/fold.rs -@@ -2,6 +2,7 @@ - // 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"))] -@@ -26,7 +27,7 @@ macro_rules! full { - /// - /// [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 { -@@ -433,35 +434,27 @@ pub trait Fold { - 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) - } -@@ -799,10 +792,10 @@ 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")] -@@ -819,9 +812,9 @@ where - 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"))] -@@ -842,7 +835,7 @@ 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), -@@ -859,7 +852,7 @@ where - 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), -@@ -871,59 +864,47 @@ 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::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::BitAnd(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))) - } - } - } -@@ -934,7 +915,7 @@ where - { - 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), - } - } -@@ -955,9 +936,9 @@ where - { - 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"))] -@@ -969,9 +950,9 @@ where - 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)), - } - } -@@ -982,7 +963,7 @@ where - { - 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)), - } - } -@@ -1016,7 +997,7 @@ where - 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")] -@@ -1112,7 +1093,7 @@ where - 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)), - } - } -@@ -1148,7 +1129,7 @@ where - 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)), - } - } -@@ -1232,9 +1213,9 @@ where - 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)), - } -@@ -1258,7 +1239,7 @@ where - 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), - } - } -@@ -1327,7 +1308,7 @@ where - 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)), - } - } -@@ -1384,7 +1365,7 @@ where - 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)), -@@ -1432,7 +1413,7 @@ where - { - 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)), -@@ -1447,7 +1428,7 @@ where - 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)), - } - } -@@ -1484,7 +1465,7 @@ where - 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")] -@@ -1517,7 +1498,7 @@ where - 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)), - } - } -@@ -1576,7 +1557,7 @@ where - 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), - } - } -@@ -1588,7 +1569,7 @@ where - 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)), - } - } -@@ -1600,7 +1581,7 @@ where - 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), - } - } -@@ -1681,7 +1662,7 @@ where - 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")] -@@ -1692,7 +1673,7 @@ where - 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")] -@@ -1706,9 +1687,9 @@ where - 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")] -@@ -1721,7 +1702,7 @@ where - 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"))] -@@ -1779,9 +1760,9 @@ 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)), - } - } -@@ -1819,11 +1800,11 @@ where - 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")] -@@ -1834,7 +1815,7 @@ where - 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")] -@@ -1862,9 +1843,9 @@ where - 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"))] -@@ -1913,11 +1894,11 @@ where - 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")] -@@ -1952,7 +1933,7 @@ where - 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")] -@@ -2011,7 +1992,7 @@ where - 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")] -@@ -2043,7 +2024,7 @@ where - 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")] -@@ -2057,11 +2038,11 @@ where - 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")] -@@ -2076,7 +2057,7 @@ where - 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")] -@@ -2092,7 +2073,7 @@ where - 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)), -@@ -2109,9 +2090,9 @@ where - 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")] -@@ -2125,9 +2106,9 @@ where - 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")] -@@ -2153,9 +2134,9 @@ where - 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")] -@@ -2165,7 +2146,7 @@ where - { - 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 -@@ -2185,11 +2166,10 @@ where - 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, -@@ -2205,7 +2185,6 @@ where - 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, -@@ -2215,7 +2194,6 @@ where - 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, -@@ -2225,7 +2203,6 @@ where - 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, -@@ -2235,7 +2212,6 @@ where - 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, -@@ -2245,7 +2221,6 @@ where - 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, -@@ -2255,7 +2230,6 @@ where - 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, -@@ -2265,7 +2239,6 @@ where - 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, -@@ -2286,11 +2259,11 @@ where - 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"))] -@@ -2361,7 +2334,7 @@ where - { - 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), - } - } -@@ -2371,10 +2344,10 @@ 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"))] -@@ -2449,7 +2422,7 @@ where - 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)), - ) - }), -@@ -2482,7 +2455,7 @@ where - { - 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)), - } - } -@@ -2516,7 +2489,7 @@ where - { - 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)), - } -@@ -2585,7 +2558,7 @@ where - 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)), - } - } -@@ -2605,7 +2578,7 @@ 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)), - } - } -@@ -2641,7 +2614,7 @@ where - { - 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), - } - } -@@ -2652,7 +2625,7 @@ where - { - 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)), - } - } -@@ -2664,7 +2637,7 @@ where - 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)), - } - } -@@ -2674,11 +2647,11 @@ 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")] -@@ -2691,7 +2664,7 @@ where - 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))) - } - } - } -@@ -2704,7 +2677,7 @@ where - 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)), - ) - }), -@@ -2720,7 +2693,7 @@ where - 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)), - ), - } -@@ -2761,7 +2734,7 @@ where - 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)), - ), - } - } -@@ -2785,7 +2758,7 @@ where - 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))) - } - } - } -@@ -2812,15 +2785,15 @@ where - 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")] -@@ -2831,7 +2804,7 @@ where - 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")] -@@ -2843,7 +2816,7 @@ where - 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")] -@@ -2856,15 +2829,15 @@ where - 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"))] -@@ -2899,7 +2872,7 @@ where - 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), - } - } -@@ -2974,9 +2947,9 @@ where - 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)), - } - } -@@ -3018,7 +2991,7 @@ 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)), -@@ -3030,7 +3003,7 @@ 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)), -@@ -3072,9 +3045,9 @@ 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")] -@@ -3083,7 +3056,7 @@ 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")] -@@ -3112,7 +3085,7 @@ where - { - 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)), - } - } -@@ -3147,7 +3120,7 @@ where - { - 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"))] -@@ -3161,7 +3134,7 @@ where - 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), - ) - }), -diff --git a/third_party/rust/syn/src/gen/hash.rs b/third_party/rust/syn/src/gen/hash.rs -new file mode 100644 -index 0000000000..9e9e84a7af ---- /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 -index b667f530c3..24d34b7480 100644 ---- a/third_party/rust/syn/src/gen/visit.rs -+++ b/third_party/rust/syn/src/gen/visit.rs -@@ -20,7 +20,6 @@ macro_rules! full { - unreachable!() - }; - } --#[cfg(any(feature = "full", feature = "derive"))] - macro_rules! skip { - ($($tt:tt)*) => {}; - } -@@ -30,7 +29,7 @@ macro_rules! skip { - /// - /// [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) { -@@ -434,35 +433,27 @@ pub trait Visit<'ast> { - 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) - } -@@ -2537,7 +2528,6 @@ where - } - } - } --#[cfg(any(feature = "derive", feature = "full"))] - pub fn visit_lit<'ast, V>(v: &mut V, node: &'ast Lit) - where - V: Visit<'ast> + ?Sized, -@@ -2569,7 +2559,6 @@ where - } - } - } --#[cfg(any(feature = "derive", feature = "full"))] - pub fn visit_lit_bool<'ast, V>(v: &mut V, node: &'ast LitBool) - where - V: Visit<'ast> + ?Sized, -@@ -2577,37 +2566,31 @@ where - 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, -diff --git a/third_party/rust/syn/src/gen/visit_mut.rs b/third_party/rust/syn/src/gen/visit_mut.rs -index 5cddb827c6..5ce11f0b2e 100644 ---- a/third_party/rust/syn/src/gen/visit_mut.rs -+++ b/third_party/rust/syn/src/gen/visit_mut.rs -@@ -20,7 +20,6 @@ macro_rules! full { - unreachable!() - }; - } --#[cfg(any(feature = "full", feature = "derive"))] - macro_rules! skip { - ($($tt:tt)*) => {}; - } -@@ -31,7 +30,7 @@ macro_rules! skip { - /// - /// [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) { -@@ -438,35 +437,27 @@ pub trait VisitMut { - 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) - } -@@ -2543,7 +2534,6 @@ where - } - } - } --#[cfg(any(feature = "derive", feature = "full"))] - pub fn visit_lit_mut<V>(v: &mut V, node: &mut Lit) - where - V: VisitMut + ?Sized, -@@ -2575,7 +2565,6 @@ where - } - } - } --#[cfg(any(feature = "derive", feature = "full"))] - pub fn visit_lit_bool_mut<V>(v: &mut V, node: &mut LitBool) - where - V: VisitMut + ?Sized, -@@ -2583,37 +2572,31 @@ where - 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, -diff --git a/third_party/rust/syn/src/generics.rs b/third_party/rust/syn/src/generics.rs -index 95ab2e404a..05e8ef5cdf 100644 ---- a/third_party/rust/syn/src/generics.rs -+++ b/third_party/rust/syn/src/generics.rs -@@ -1,13 +1,16 @@ - 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![,]>, -@@ -20,7 +23,7 @@ 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 -@@ -28,9 +31,6 @@ ast_enum_of_structs! { - /// 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), -@@ -46,7 +46,7 @@ ast_enum_of_structs! { - 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>, -@@ -61,7 +61,7 @@ ast_struct! { - 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>, -@@ -74,7 +74,7 @@ ast_struct! { - 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>, -@@ -87,6 +87,17 @@ ast_struct! { - } - } - -+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 -@@ -280,29 +291,23 @@ impl<'a> Iterator for ConstParamsMut<'a> { - - /// 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")] -@@ -314,9 +319,8 @@ impl Generics { - /// # 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! { -@@ -324,11 +328,10 @@ impl Generics { - /// // ... - /// } - /// } -- /// # ; -- /// # } -+ /// # ; - /// ``` - /// -- /// *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>) { - ( -@@ -339,11 +342,57 @@ impl Generics { - } - } - -+#[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) -@@ -353,9 +402,8 @@ impl<'a> TypeGenerics<'a> { - 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![<], -@@ -364,6 +412,17 @@ ast_struct! { - } - } - -+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 { -@@ -391,7 +450,7 @@ impl From<Ident> for TypeParam { - 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), -@@ -402,7 +461,7 @@ ast_enum_of_structs! { - 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>, -@@ -418,9 +477,8 @@ 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![?]), -@@ -431,7 +489,7 @@ 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], -@@ -442,7 +500,7 @@ ast_struct! { - 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 -@@ -450,9 +508,6 @@ ast_enum_of_structs! { - /// 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), -@@ -468,7 +523,7 @@ ast_enum_of_structs! { - 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 -@@ -484,7 +539,7 @@ ast_struct! { - 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, -@@ -496,7 +551,7 @@ ast_struct! { - 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, -@@ -521,7 +576,6 @@ pub mod parsing { - - let mut params = Punctuated::new(); - let mut allow_lifetime_param = true; -- let mut allow_type_param = true; - loop { - if input.peek(Token![>]) { - break; -@@ -534,7 +588,7 @@ pub mod parsing { - 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, -@@ -542,7 +596,6 @@ pub mod parsing { - })); - } else if lookahead.peek(Token![const]) { - allow_lifetime_param = false; -- allow_type_param = false; - params.push_value(GenericParam::Const(ConstParam { - attrs, - ..input.parse()? -@@ -665,57 +718,53 @@ pub mod parsing { - - 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 -- } -- }, -- 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); -- } -+ 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; - } -- bounds -- }, -- eq_token: { -- if input.peek(Token![=]) { -- has_default = true; -- Some(input.parse()?) -- } else { -- has_default = false; -- None -+ if input.peek(Token![?]) && input.peek2(Token![const]) { -+ input.parse::<Token![?]>()?; -+ input.parse::<Token![const]>()?; -+ is_maybe_const = true; - } -- }, -- default: { -- if has_default { -- Some(input.parse()?) -- } else { -- None -+ let value: TypeParamBound = input.parse()?; -+ bounds.push_value(value); -+ if !input.peek(Token![+]) { -+ break; - } -- }, -+ 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, - }) - } - } -@@ -898,6 +947,8 @@ mod printing { - use super::*; - - use proc_macro2::TokenStream; -+ #[cfg(feature = "full")] -+ use proc_macro2::TokenTree; - use quote::{ToTokens, TokenStreamExt}; - - use crate::attr::FilterAttrs; -@@ -1080,9 +1131,25 @@ mod printing { - 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); - } - } - } -@@ -1117,9 +1184,9 @@ mod printing { - 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); - } - } - } -diff --git a/third_party/rust/syn/src/item.rs b/third_party/rust/syn/src/item.rs -index ff4485ace9..0d8f7d3ddc 100644 ---- a/third_party/rust/syn/src/item.rs -+++ b/third_party/rust/syn/src/item.rs -@@ -1,17 +1,15 @@ - 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 - /// -@@ -21,7 +19,7 @@ ast_enum_of_structs! { - // - // 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), - -@@ -83,7 +81,7 @@ ast_enum_of_structs! { - 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, -@@ -100,7 +98,7 @@ ast_struct! { - 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, -@@ -115,7 +113,7 @@ ast_struct! { - 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, -@@ -131,7 +129,7 @@ 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, -@@ -143,7 +141,7 @@ ast_struct! { - 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, -@@ -156,7 +154,7 @@ 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]>, -@@ -175,7 +173,7 @@ ast_struct! { - 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 { ... }`. -@@ -188,8 +186,8 @@ ast_struct! { - 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], -@@ -201,7 +199,7 @@ ast_struct! { - 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, -@@ -215,7 +213,7 @@ ast_struct! { - 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, -@@ -233,7 +231,7 @@ ast_struct! { - 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, -@@ -248,7 +246,7 @@ ast_struct! { - 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, -@@ -267,7 +265,7 @@ ast_struct! { - 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, -@@ -283,7 +281,7 @@ ast_struct! { - 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, -@@ -299,7 +297,7 @@ ast_struct! { - 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, -@@ -313,7 +311,7 @@ ast_struct! { - 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, -@@ -324,145 +322,32 @@ ast_struct! { - } - } - --#[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 { -@@ -496,10 +381,57 @@ impl From<DeriveInput> for Item { - } - } - -+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 - /// -@@ -530,7 +462,7 @@ ast_enum_of_structs! { - 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![::], -@@ -541,7 +473,7 @@ ast_struct! { - 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, - } -@@ -550,7 +482,7 @@ ast_struct! { - 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], -@@ -561,7 +493,7 @@ ast_struct! { - 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![*], - } -@@ -570,7 +502,7 @@ ast_struct! { - 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![,]>, -@@ -580,7 +512,7 @@ ast_struct! { - 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 - /// -@@ -590,7 +522,7 @@ ast_enum_of_structs! { - // - // 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), - -@@ -614,7 +546,7 @@ ast_enum_of_structs! { - 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, -@@ -626,7 +558,7 @@ ast_struct! { - 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, -@@ -642,7 +574,7 @@ ast_struct! { - 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, -@@ -655,7 +587,7 @@ ast_struct! { - 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, -@@ -663,61 +595,10 @@ ast_struct! { - } - } - --#[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 - /// -@@ -727,7 +608,7 @@ ast_enum_of_structs! { - // - // 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), - -@@ -751,7 +632,7 @@ ast_enum_of_structs! { - 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], -@@ -766,7 +647,7 @@ ast_struct! { - 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, -@@ -778,7 +659,7 @@ ast_struct! { - 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], -@@ -794,7 +675,7 @@ ast_struct! { - 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, -@@ -802,61 +683,10 @@ ast_struct! { - } - } - --#[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 - /// -@@ -866,7 +696,7 @@ ast_enum_of_structs! { - // - // 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), - -@@ -890,7 +720,7 @@ ast_enum_of_structs! { - 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, -@@ -908,7 +738,7 @@ ast_struct! { - 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, -@@ -921,7 +751,7 @@ ast_struct! { - 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, -@@ -938,7 +768,7 @@ ast_struct! { - 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, -@@ -946,62 +776,11 @@ ast_struct! { - } - } - --#[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]>, -@@ -1017,13 +796,34 @@ ast_struct! { - } - } - -+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. -@@ -1035,7 +835,10 @@ 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>)>, -@@ -1056,7 +859,8 @@ pub mod parsing { - - 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}; - -@@ -1064,18 +868,26 @@ pub mod parsing { - - 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) { -@@ -1083,8 +895,6 @@ pub mod parsing { - 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()) - } -@@ -1094,18 +904,61 @@ pub mod parsing { - } 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()) - } -@@ -1117,21 +970,19 @@ pub mod parsing { - { - 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]) { -@@ -1147,14 +998,18 @@ pub mod parsing { - } 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![::])) - { -@@ -1163,32 +1018,64 @@ pub mod parsing { - 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, -+ }) - } - } - -@@ -1310,7 +1197,6 @@ pub mod parsing { - || 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![::]) { -@@ -1392,69 +1278,126 @@ pub mod parsing { - } - } - -- 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()?; -+ fn pop_variadic(args: &mut Punctuated<FnArg, Token![,]>) -> Option<Variadic> { -+ let trailing_punct = args.trailing_punct(); - -- 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 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(); - } -+ } - -- let output: ReturnType = input.parse()?; -- let where_clause: Option<WhereClause> = input.parse()?; -+ Some(variadic) -+ } - -- 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 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 -+ }), -+ ]) -+ } - -- 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 }), -- }) -+ 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 sig = parse_signature(input)?; -+ parse_rest_of_fn(input, outer_attrs, vis, sig) - } - } - -+ 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, -+ block: Box::new(Block { brace_token, stmts }), -+ }) -+ } -+ - impl Parse for FnArg { - fn parse(input: ParseStream) -> Result<Self> { - let attrs = input.call(Attribute::parse_outer)?; -@@ -1491,26 +1434,79 @@ pub mod parsing { - } - } - -+ 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()?, - }), - }) -@@ -1581,22 +1577,60 @@ pub mod parsing { - - 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![::])) - { -@@ -1605,17 +1639,16 @@ pub mod parsing { - 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) - } -@@ -1625,55 +1658,12 @@ pub mod parsing { - 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, - }) - } -@@ -1706,6 +1696,37 @@ pub mod parsing { - } - } - -+ 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)?; -@@ -1742,6 +1763,36 @@ pub mod parsing { - } - } - -+ 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")) -@@ -1887,7 +1938,7 @@ pub mod parsing { - - 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()?; -@@ -1896,7 +1947,7 @@ pub mod parsing { - let generics: Generics = input.parse()?; - parse_rest_of_trait( - input, -- attrs, -+ outer_attrs, - vis, - unsafety, - auto_token, -@@ -1909,7 +1960,7 @@ pub mod parsing { - - 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]>, -@@ -1937,13 +1988,14 @@ pub mod parsing { - - 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, -@@ -2014,14 +2066,19 @@ pub mod parsing { - - 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]) -@@ -2032,18 +2089,11 @@ pub mod parsing { - } 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![::]) - { -@@ -2052,18 +2102,20 @@ pub mod parsing { - 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) - } - } -@@ -2073,7 +2125,14 @@ pub mod parsing { - 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: { -@@ -2093,20 +2152,7 @@ pub mod parsing { - 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) { -@@ -2124,22 +2170,7 @@ pub mod parsing { - - 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, - }) -@@ -2188,6 +2219,35 @@ pub mod parsing { - } - } - -+ 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)?; -@@ -2207,52 +2267,67 @@ pub mod parsing { - - 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 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 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 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![>])) -+ || input.peek2(Token![const])); -+ let generics: Generics = if has_generics { -+ input.parse()? -+ } else { -+ Generics::default() -+ }; - -- let content; -- let brace_token = braced!(content in input); -- let inner_attrs = content.call(Attribute::parse_inner)?; -+ 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 mut items = Vec::new(); -- while !content.is_empty() { -- items.push(content.parse()?); -+ 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 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)?; -+ -+ let mut items = Vec::new(); -+ while !content.is_empty() { -+ items.push(content.parse()?); -+ } - -- Ok(ItemImpl { -+ if is_const_impl { -+ Ok(None) -+ } else { -+ Ok(Some(ItemImpl { - attrs: private::attrs(outer_attrs, inner_attrs), - defaultness, - unsafety, -@@ -2265,12 +2340,13 @@ pub mod parsing { - 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()?; -@@ -2284,28 +2360,38 @@ pub mod parsing { - 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() -@@ -2313,7 +2399,6 @@ pub mod parsing { - && (lookahead.peek(Ident) - || lookahead.peek(Token![self]) - || lookahead.peek(Token![super]) -- || lookahead.peek(Token![extern]) - || lookahead.peek(Token![crate]) - || lookahead.peek(Token![::])) - { -@@ -2346,7 +2431,14 @@ pub mod parsing { - 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()?, -@@ -2358,50 +2450,39 @@ pub mod parsing { - - 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 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 sig = parse_signature(input)?; -+ -+ 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, - }) - } - } -@@ -2426,6 +2507,37 @@ pub mod parsing { - } - } - -+ 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)?; -@@ -2471,6 +2583,7 @@ mod printing { - - use crate::attr::FilterAttrs; - use crate::print::TokensOrDefault; -+ use crate::punctuated::Pair; - - impl ToTokens for ItemExternCrate { - fn to_tokens(&self, tokens: &mut TokenStream) { -@@ -2835,6 +2948,14 @@ mod printing { - 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); -@@ -2905,6 +3026,33 @@ mod printing { - } - } - -+ 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); -@@ -2915,11 +3063,24 @@ mod printing { - 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); -+ } -+ } -+ } -+ 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.variadic.to_tokens(tokens); - }); - self.output.to_tokens(tokens); - self.generics.where_clause.to_tokens(tokens); -diff --git a/third_party/rust/syn/src/keyword.rs b/third_party/rust/syn/src/keyword.rs -deleted file mode 100644 -index e69de29bb2..0000000000 -diff --git a/third_party/rust/syn/src/lib.rs b/third_party/rust/syn/src/lib.rs -index c8ada7e638..3da506731e 100644 ---- a/third_party/rust/syn/src/lib.rs -+++ b/third_party/rust/syn/src/lib.rs -@@ -1,3 +1,11 @@ -+//! [![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. - //! -@@ -62,8 +70,8 @@ - //! ``` - //! - //! ``` --//! extern crate proc_macro; --//! -+//! # extern crate proc_macro; -+//! # - //! use proc_macro::TokenStream; - //! use quote::quote; - //! use syn::{parse_macro_input, DeriveInput}; -@@ -242,35 +250,48 @@ - //! 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( -@@ -284,7 +305,6 @@ extern crate unicode_xid; - #[cfg(feature = "printing")] - extern crate quote; - --#[cfg(any(feature = "full", feature = "derive"))] - #[macro_use] - mod macros; - -@@ -307,7 +327,6 @@ 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"))] -@@ -364,9 +383,7 @@ 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, - }; -@@ -441,6 +458,9 @@ 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. - /// -@@ -482,7 +502,7 @@ mod gen { - /// /* ... */ - /// ``` - /// -- /// *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> - /// -@@ -603,7 +623,7 @@ mod gen { - /// /* ... */ - /// ``` - /// -- /// *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> -@@ -702,7 +722,7 @@ mod gen { - /// /* ... */ - /// ``` - /// -- /// *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> - /// -@@ -744,6 +764,22 @@ mod gen { - #[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; -@@ -757,6 +793,8 @@ pub mod export; - mod custom_keyword; - mod custom_punctuation; - mod sealed; -+mod span; -+mod thread; - - #[cfg(feature = "parsing")] - mod lookahead; -@@ -764,13 +802,15 @@ 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)] -@@ -800,14 +840,14 @@ pub use crate::error::{Error, Result}; - /// - /// [`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; -@@ -847,7 +887,7 @@ pub fn parse<T: parse::Parse>(tokens: proc_macro::TokenStream) -> Result<T> { - /// - /// [`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) -@@ -855,7 +895,7 @@ pub fn parse2<T: parse::Parse>(tokens: proc_macro2::TokenStream) -> Result<T> { - - /// 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 - /// -@@ -874,9 +914,7 @@ pub fn parse2<T: parse::Parse>(tokens: proc_macro2::TokenStream) -> Result<T> { - /// Ok(()) - /// } - /// # --/// # fn main() { --/// # run().unwrap(); --/// # } -+/// # run().unwrap(); - /// ``` - #[cfg(feature = "parsing")] - pub fn parse_str<T: parse::Parse>(s: &str) -> Result<T> { -@@ -894,7 +932,7 @@ pub fn parse_str<T: parse::Parse>(s: &str) -> Result<T> { - /// - /// 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 -@@ -918,9 +956,7 @@ pub fn parse_str<T: parse::Parse>(s: &str) -> Result<T> { - /// Ok(()) - /// } - /// # --/// # fn main() { --/// # run().unwrap(); --/// # } -+/// # run().unwrap(); - /// ``` - #[cfg(all(feature = "parsing", feature = "full"))] - pub fn parse_file(mut content: &str) -> Result<File> { -@@ -931,13 +967,16 @@ pub fn parse_file(mut content: &str) -> Result<File> { - } - - 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 = ""; -+ } - } - } - -diff --git a/third_party/rust/syn/src/lifetime.rs b/third_party/rust/syn/src/lifetime.rs -index d51c48e827..959cc5f9c6 100644 ---- a/third_party/rust/syn/src/lifetime.rs -+++ b/third_party/rust/syn/src/lifetime.rs -@@ -18,10 +18,8 @@ use crate::lookahead; - /// - 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, -@@ -72,6 +70,15 @@ impl Display for Lifetime { - } - } - -+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) -diff --git a/third_party/rust/syn/src/lit.rs b/third_party/rust/syn/src/lit.rs -index f2209a2980..ee77e75bec 100644 ---- a/third_party/rust/syn/src/lit.rs -+++ b/third_party/rust/syn/src/lit.rs -@@ -22,9 +22,6 @@ 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]. -@@ -33,7 +30,7 @@ ast_enum_of_structs! { - // - // 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), - -@@ -64,61 +61,44 @@ ast_enum_of_structs! { - - 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>, -@@ -129,15 +109,11 @@ 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>, -@@ -146,92 +122,27 @@ struct LitFloatRepr { - - 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) - } - -@@ -311,7 +222,7 @@ impl LitStr { - 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); - } -@@ -345,19 +256,30 @@ 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 - } - } - -@@ -365,19 +287,30 @@ 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 - } - } - -@@ -385,36 +318,52 @@ 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, -+ }), - } - } - -@@ -492,18 +441,23 @@ impl Display for LitInt { - - 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, -+ }), - } - } - -@@ -575,7 +529,7 @@ mod debug_impls { - 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() - } - } -@@ -584,7 +538,7 @@ mod debug_impls { - 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() - } - } -@@ -593,7 +547,7 @@ mod debug_impls { - 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() - } - } -@@ -626,15 +580,53 @@ mod debug_impls { - } - } - -+#[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 $ty { - fn eq(&self, other: &Self) -> bool { -- self.$($field).+.to_string() == other.$($field).+.to_string() -+ self.repr.token.to_string() == other.repr.token.to_string() - } - } - -@@ -644,7 +636,7 @@ macro_rules! lit_extra_traits { - where - H: Hasher, - { -- self.$($field).+.to_string().hash(state); -+ self.repr.token.to_string().hash(state); - } - } - -@@ -657,20 +649,23 @@ macro_rules! lit_extra_traits { - }; - } - --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, -@@ -691,7 +686,9 @@ pub fn Lit(marker: lookahead::TokenMarker) -> Lit { - #[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> { -@@ -699,25 +696,73 @@ pub mod parsing { - 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(); -@@ -803,19 +848,19 @@ mod printing { - - 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); - } - } - -@@ -855,20 +900,29 @@ mod value { - 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")) { -@@ -905,6 +959,44 @@ 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 -@@ -1004,19 +1096,18 @@ mod value { - 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), -@@ -1028,25 +1119,25 @@ mod value { - // 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', -@@ -1057,10 +1148,10 @@ mod value { - 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; - } -@@ -1069,42 +1160,45 @@ mod value { - } - } - 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', -@@ -1118,16 +1212,18 @@ mod value { - } - } - 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..]; - -@@ -1163,8 +1259,9 @@ mod value { - 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) -@@ -1334,7 +1431,11 @@ mod value { - } - b'e' | b'E' => { - if has_e { -- return None; -+ if has_exponent { -+ break; -+ } else { -+ return None; -+ } - } - has_e = true; - bytes[write] = b'e'; -@@ -1372,11 +1473,33 @@ mod value { - } - } - -- 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 -index 6c3dcae92a..de288a34e1 100644 ---- a/third_party/rust/syn/src/mac.rs -+++ b/third_party/rust/syn/src/mac.rs -@@ -2,21 +2,17 @@ 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, -@@ -27,7 +23,7 @@ ast_struct! { - 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), -@@ -36,39 +32,20 @@ ast_enum! { - } - } - --#[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 { -@@ -163,9 +140,7 @@ impl Macro { - /// 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()) - } - } -diff --git a/third_party/rust/syn/src/macros.rs b/third_party/rust/syn/src/macros.rs -index 9cac5c15df..8060224381 100644 ---- a/third_party/rust/syn/src/macros.rs -+++ b/third_party/rust/syn/src/macros.rs -@@ -4,15 +4,11 @@ macro_rules! ast_struct { - 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 $name { -- _noconstruct: (), -+ _noconstruct: ::std::marker::PhantomData<::proc_macro2::Span>, - } - - #[cfg(all(not(feature = "full"), feature = "printing"))] -@@ -23,29 +19,10 @@ macro_rules! ast_struct { - } - }; - -- ( -- [$($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)* - }; - -@@ -63,21 +40,10 @@ macro_rules! ast_enum { - 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)* - ); - -@@ -120,15 +86,9 @@ macro_rules! ast_enum_of_structs_impl { - 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, $member); -+ )*)* - - #[cfg(feature = "printing")] - generate_to_tokens! { -@@ -140,6 +100,19 @@ macro_rules! ast_enum_of_structs_impl { - }; - } - -+macro_rules! ast_enum_from_struct { -+ // No From<TokenStream> for verbatim variants. -+ ($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)*) => (); -diff --git a/third_party/rust/syn/src/op.rs b/third_party/rust/syn/src/op.rs -index 49fb853c79..d254673b40 100644 ---- a/third_party/rust/syn/src/op.rs -+++ b/third_party/rust/syn/src/op.rs -@@ -1,9 +1,8 @@ - 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![+]), -@@ -67,9 +66,8 @@ ast_enum! { - 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![*]), -diff --git a/third_party/rust/syn/src/parse.rs b/third_party/rust/syn/src/parse.rs -index 7c7b194308..abb4c4c14f 100644 ---- a/third_party/rust/syn/src/parse.rs -+++ b/third_party/rust/syn/src/parse.rs -@@ -26,8 +26,8 @@ - //! [`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}; -@@ -109,9 +109,7 @@ - //! # Ok(()) - //! # } - //! # --//! # fn main() { --//! # run_parser().unwrap(); --//! # } -+//! # run_parser().unwrap(); - //! ``` - //! - //! The [`parse_quote!`] macro also uses this approach. -@@ -155,8 +153,8 @@ - //! [`Parser`]: trait.Parser.html - //! - //! ``` --//! extern crate proc_macro; --//! -+//! # extern crate proc_macro; -+//! # - //! use proc_macro::TokenStream; - //! use syn::parse::Parser; - //! use syn::punctuated::Punctuated; -@@ -186,7 +184,7 @@ - //! - //! --- - //! --//! *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; -@@ -217,6 +215,11 @@ 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>; - } -@@ -263,13 +266,16 @@ pub struct ParseBuffer<'a> { - // 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)); -+ } - } - } - } -@@ -324,15 +330,12 @@ impl<'a> Debug for ParseBuffer<'a> { - /// # 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. -@@ -356,6 +359,14 @@ impl<'c, 'a> Deref for StepCursor<'c, 'a> { - } - } - -+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. - /// -@@ -375,36 +386,81 @@ pub(crate) fn advance_step_cursor<'c, 'a>(proof: StepCursor<'c, 'a>, to: Cursor< - 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 - } - } - --pub(crate) fn get_unexpected(buffer: &ParseBuffer) -> Rc<Cell<Option<Span>>> { -- buffer.unexpected.clone() -+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()), -+ } -+ } -+} -+ -+// 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> { -@@ -566,14 +622,17 @@ impl<'a> ParseBuffer<'a> { - /// } - /// ``` - 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 -@@ -615,12 +674,10 @@ impl<'a> ParseBuffer<'a> { - /// } - /// } - /// # -- /// # 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, -@@ -847,8 +904,8 @@ impl<'a> ParseBuffer<'a> { - 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)))), - } - } - -@@ -923,13 +980,11 @@ impl<'a> ParseBuffer<'a> { - /// # 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 -@@ -961,6 +1016,18 @@ impl<'a> ParseBuffer<'a> { - 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. - /// -@@ -971,7 +1038,7 @@ impl<'a> ParseBuffer<'a> { - } - - fn check_unexpected(&self) -> Result<()> { -- match self.unexpected.get() { -+ match inner_unexpected(self).1 { - Some(span) => Err(Error::new(span, "unexpected token")), - None => Ok(()), - } -@@ -1048,7 +1115,7 @@ impl Parse for Literal { - /// - /// [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; - -@@ -1063,7 +1130,7 @@ pub trait Parser: Sized { - /// 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"))), -@@ -1088,6 +1155,7 @@ pub trait Parser: Sized { - - // 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) -@@ -1095,6 +1163,7 @@ pub trait Parser: Sized { - - // 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)) - } -@@ -1103,7 +1172,7 @@ pub trait Parser: Sized { - 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) - } - -@@ -1118,38 +1187,42 @@ where - let state = tokens_to_parse_buffer(&buf); - let node = self(&state)?; - state.check_unexpected()?; -- if state.is_empty() { -- Ok(node) -+ if let Some(unexpected_span) = span_of_unexpected_ignoring_nones(state.cursor()) { -+ Err(Error::new(unexpected_span, "unexpected token")) - } else { -- Err(state.error("unexpected token")) -+ Ok(node) - } - } - - #[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() { -- Ok(node) -+ if let Some(unexpected_span) = span_of_unexpected_ignoring_nones(state.cursor()) { -+ Err(Error::new(unexpected_span, "unexpected token")) - } else { -- Err(state.error("unexpected token")) -+ Ok(node) - } - } - - #[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) - } -@@ -1160,8 +1233,8 @@ pub(crate) fn parse_stream<F: Parser>(f: F, input: ParseStream) -> Result<F::Out - /// 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; -diff --git a/third_party/rust/syn/src/parse_macro_input.rs b/third_party/rust/syn/src/parse_macro_input.rs -index d6e0725c17..c8fc1cea37 100644 ---- a/third_party/rust/syn/src/parse_macro_input.rs -+++ b/third_party/rust/syn/src/parse_macro_input.rs -@@ -16,8 +16,8 @@ - /// #\[proc_macro_attribute\] attribute. - /// - /// ``` --/// extern crate proc_macro; --/// -+/// # extern crate proc_macro; -+/// # - /// use proc_macro::TokenStream; - /// use syn::{parse_macro_input, Result}; - /// use syn::parse::{Parse, ParseStream}; -@@ -43,7 +43,31 @@ - /// # "".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>($tokenstream) { -@@ -54,7 +78,7 @@ macro_rules! parse_macro_input { - } - }; - ($tokenstream:ident) => { -- parse_macro_input!($tokenstream as _) -+ $crate::parse_macro_input!($tokenstream as _) - }; - } - -diff --git a/third_party/rust/syn/src/parse_quote.rs b/third_party/rust/syn/src/parse_quote.rs -index 18a47b95c7..66aa818cd0 100644 ---- a/third_party/rust/syn/src/parse_quote.rs -+++ b/third_party/rust/syn/src/parse_quote.rs -@@ -24,7 +24,7 @@ - /// } - /// ``` - /// --/// *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.* - /// -@@ -56,8 +56,10 @@ - /// 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 - /// -@@ -67,7 +69,7 @@ - // - // 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( -@@ -112,6 +114,8 @@ impl<T: Parse> ParseQuote for T { - 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 { -@@ -129,3 +133,10 @@ impl<T: Parse, P: Parse> ParseQuote for Punctuated<T, P> { - 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 -index 9371e05493..e9576a2361 100644 ---- a/third_party/rust/syn/src/pat.rs -+++ b/third_party/rust/syn/src/pat.rs -@@ -1,16 +1,12 @@ - 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 - /// -@@ -20,7 +16,7 @@ ast_enum_of_structs! { - // - // 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), - -@@ -86,7 +82,7 @@ ast_enum_of_structs! { - 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], -@@ -97,7 +93,10 @@ ast_struct! { - 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]>, -@@ -113,7 +112,7 @@ ast_struct! { - /// 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>, -@@ -123,7 +122,7 @@ ast_struct! { - 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, -@@ -133,7 +132,7 @@ ast_struct! { - 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![|]>, -@@ -150,7 +149,7 @@ ast_struct! { - /// `<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>, -@@ -161,7 +160,7 @@ ast_struct! { - 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>, -@@ -173,7 +172,7 @@ ast_struct! { - 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![&], -@@ -185,7 +184,7 @@ ast_struct! { - 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![..], -@@ -195,7 +194,7 @@ ast_struct! { - 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, -@@ -206,7 +205,7 @@ ast_struct! { - 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, -@@ -219,7 +218,7 @@ ast_struct! { - 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, -@@ -230,7 +229,7 @@ ast_struct! { - 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, -@@ -241,7 +240,7 @@ ast_struct! { - 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>, -@@ -253,7 +252,7 @@ ast_struct! { - 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![_], -@@ -266,7 +265,7 @@ ast_struct! { - /// 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, -@@ -275,122 +274,17 @@ ast_struct! { - } - } - --#[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) - && ({ -@@ -411,7 +305,6 @@ mod parsing { - || 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) -@@ -434,7 +327,7 @@ mod parsing { - } 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()) - } -@@ -442,10 +335,11 @@ mod parsing { - } - - 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() { -@@ -487,7 +381,7 @@ mod parsing { - } 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(), -@@ -546,7 +440,7 @@ mod parsing { - 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()?; -@@ -578,6 +472,7 @@ mod parsing { - } - - 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()?; -@@ -587,10 +482,10 @@ mod parsing { - || member.is_unnamed() - { - return Ok(FieldPat { -- attrs: Vec::new(), -+ attrs, - member, - colon_token: input.parse()?, -- pat: input.parse()?, -+ pat: Box::new(multi_pat(input)?), - }); - } - -@@ -610,30 +505,57 @@ mod parsing { - if let Some(boxed) = boxed { - pat = Pat::Box(PatBox { - attrs: Vec::new(), -- pat: Box::new(pat), - box_token: boxed, -+ pat: Box::new(pat), - }); - } - - Ok(FieldPat { -+ attrs, - member: Member::Named(ident), -- pat: Box::new(pat), -- attrs: Vec::new(), - colon_token: None, -+ pat: Box::new(pat), - }) - } - -- 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> { -@@ -642,7 +564,7 @@ mod parsing { - - 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; -@@ -668,14 +590,21 @@ mod parsing { - } - - 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(), -@@ -684,7 +613,17 @@ mod parsing { - } - } - -- 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(); -@@ -696,7 +635,6 @@ mod parsing { - || lookahead.peek(Token![self]) - || lookahead.peek(Token![Self]) - || lookahead.peek(Token![super]) -- || lookahead.peek(Token![extern]) - || lookahead.peek(Token![crate]) - { - Expr::Path(input.parse()?) -@@ -704,7 +642,7 @@ mod parsing { - 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), -@@ -712,7 +650,7 @@ mod parsing { - }) - } else { - expr -- })) -+ }))) - } - - fn pat_slice(input: ParseStream) -> Result<PatSlice> { -@@ -721,7 +659,7 @@ mod parsing { - - 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; -@@ -737,11 +675,35 @@ mod parsing { - }) - } - -- 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) - } - } - -@@ -756,12 +718,14 @@ mod printing { - - 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); -@@ -774,6 +738,7 @@ mod printing { - - 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); -@@ -788,6 +753,7 @@ mod printing { - - 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); - } -@@ -804,12 +770,14 @@ mod printing { - - 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); - }); -@@ -818,6 +786,7 @@ mod printing { - - 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); - } -@@ -825,6 +794,7 @@ mod printing { - - 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); -@@ -833,18 +803,21 @@ mod printing { - - 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), -@@ -856,6 +829,7 @@ mod printing { - - 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); - }); -@@ -864,12 +838,14 @@ mod printing { - - 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); - } -@@ -877,6 +853,7 @@ mod printing { - - 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); -diff --git a/third_party/rust/syn/src/path.rs b/third_party/rust/syn/src/path.rs -index 8dda43ee67..15c0fcc664 100644 ---- a/third_party/rust/syn/src/path.rs -+++ b/third_party/rust/syn/src/path.rs -@@ -2,9 +2,9 @@ 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![::]>, -@@ -29,7 +29,7 @@ where - 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, -@@ -52,7 +52,7 @@ where - 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 -@@ -98,7 +98,7 @@ impl PathArguments { - 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. -@@ -122,7 +122,7 @@ 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![::]>, -@@ -135,7 +135,7 @@ ast_struct! { - 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, -@@ -147,7 +147,7 @@ ast_struct! { - 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, -@@ -160,7 +160,7 @@ 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, -@@ -189,7 +189,7 @@ ast_struct! { - /// 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![<], -@@ -291,11 +291,7 @@ pub mod parsing { - - 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)); - } -@@ -358,7 +354,7 @@ 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 -@@ -400,7 +396,6 @@ pub mod parsing { - && !input.peek(Token![self]) - && !input.peek(Token![Self]) - && !input.peek(Token![crate]) -- && !input.peek(Token![extern]) - { - break; - } -@@ -433,7 +428,7 @@ pub mod parsing { - /// 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 -@@ -472,7 +467,7 @@ pub mod parsing { - /// - 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() -diff --git a/third_party/rust/syn/src/punctuated.rs b/third_party/rust/syn/src/punctuated.rs -index 38c7bf4e82..46c82a65b1 100644 ---- a/third_party/rust/syn/src/punctuated.rs -+++ b/third_party/rust/syn/src/punctuated.rs -@@ -22,6 +22,8 @@ - - #[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; -@@ -41,8 +43,6 @@ use crate::token::Token; - /// 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>>, -@@ -76,22 +76,19 @@ impl<T, P> Punctuated<T, P> { - 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`. -@@ -230,13 +227,19 @@ impl<T, P> Punctuated<T, P> { - } - } - -+ /// 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> -@@ -256,7 +259,7 @@ impl<T, P> Punctuated<T, P> { - /// - /// [`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( -@@ -292,7 +295,7 @@ impl<T, P> Punctuated<T, P> { - /// 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> -@@ -312,7 +315,7 @@ impl<T, P> Punctuated<T, P> { - /// - /// [`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( -@@ -338,6 +341,53 @@ impl<T, P> Punctuated<T, P> { - } - } - -+#[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 { -@@ -536,7 +586,6 @@ impl<'a, T, P> ExactSizeIterator for PairsMut<'a, 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>, -@@ -572,12 +621,24 @@ impl<T, P> ExactSizeIterator for IntoPairs<T, P> { - } - } - -+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>, - } -@@ -606,6 +667,17 @@ impl<T> ExactSizeIterator for IntoIter<T> { - } - } - -+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. -@@ -799,7 +871,6 @@ impl<'a, T: 'a, I: 'a> IterMutTrait<'a, T> for I where - /// 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), -@@ -856,6 +927,20 @@ impl<T, P> Pair<T, P> { - } - } - -+#[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; - -diff --git a/third_party/rust/syn/src/reserved.rs b/third_party/rust/syn/src/reserved.rs -new file mode 100644 -index 0000000000..ccfb8b5ad0 ---- /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 -index 71ffe26b81..01591cedcb 100644 ---- a/third_party/rust/syn/src/spanned.rs -+++ b/third_party/rust/syn/src/spanned.rs -@@ -1,7 +1,7 @@ - //! 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> -@@ -97,7 +97,7 @@ use quote::spanned::Spanned as ToTokens; - /// - /// [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 -diff --git a/third_party/rust/syn/src/stmt.rs b/third_party/rust/syn/src/stmt.rs -index e4277fdbaa..b06e843d75 100644 ---- a/third_party/rust/syn/src/stmt.rs -+++ b/third_party/rust/syn/src/stmt.rs -@@ -3,7 +3,7 @@ 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 -@@ -14,7 +14,7 @@ ast_struct! { - 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), -@@ -33,7 +33,7 @@ ast_enum! { - 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], -@@ -47,14 +47,15 @@ ast_struct! { - 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 -@@ -106,8 +107,8 @@ pub mod parsing { - 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; -@@ -146,55 +147,55 @@ pub mod parsing { - } - - 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)?; -@@ -213,33 +214,12 @@ pub mod parsing { - }))) - } - -- 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()?; -@@ -265,12 +245,19 @@ pub mod parsing { - }) - } - -- 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()?)); -diff --git a/third_party/rust/syn/src/token.rs b/third_party/rust/syn/src/token.rs -index 0b8c18192f..8539378c5e 100644 ---- a/third_party/rust/syn/src/token.rs -+++ b/third_party/rust/syn/src/token.rs -@@ -88,7 +88,6 @@ - //! [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")] -@@ -97,13 +96,13 @@ use std::fmt::{self, Debug}; - 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}; - -@@ -112,10 +111,8 @@ use self::private::WithSpan; - 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")] -@@ -155,21 +152,20 @@ mod private { - #[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 $name { - fn peek(cursor: Cursor) -> bool { -@@ -189,24 +185,38 @@ macro_rules! impl_token { - }; - } - --#[cfg(any(feature = "full", feature = "derive"))] --impl_token!(Lifetime "lifetime"); --#[cfg(any(feature = "full", feature = "derive"))] --impl_token!(Lit "literal"); --#[cfg(any(feature = "full", feature = "derive"))] --impl_token!(LitStr "string literal"); --#[cfg(any(feature = "full", feature = "derive"))] --impl_token!(LitByteStr "byte string literal"); --#[cfg(any(feature = "full", feature = "derive"))] --impl_token!(LitByte "byte literal"); --#[cfg(any(feature = "full", feature = "derive"))] --impl_token!(LitChar "character literal"); --#[cfg(any(feature = "full", feature = "derive"))] --impl_token!(LitInt "integer literal"); --#[cfg(any(feature = "full", feature = "derive"))] --impl_token!(LitFloat "floating point literal"); --#[cfg(any(feature = "full", feature = "derive"))] --impl_token!(LitBool "boolean literal"); -+impl_token!("lifetime" Lifetime); -+impl_token!("literal" Lit); -+impl_token!("string literal" LitStr); -+impl_token!("byte string literal" LitByteStr); -+impl_token!("byte literal" LitByte); -+impl_token!("character literal" LitChar); -+impl_token!("integer literal" LitInt); -+impl_token!("floating point literal" LitFloat); -+impl_token!("boolean literal" LitBool); -+impl_token!("group token" proc_macro2::Group); -+ -+macro_rules! impl_low_level_token { -+ ($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 $ty {} -+ }; -+} -+ -+impl_low_level_token!("punctuation token" Punct punct); -+impl_low_level_token!("literal" Literal literal); -+impl_low_level_token!("token" TokenTree token_tree); - - // Not public API. - #[doc(hidden)] -@@ -233,7 +243,6 @@ impl<T: CustomToken> Token for T { - macro_rules! define_keywords { - ($($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 -@@ -260,6 +269,16 @@ macro_rules! define_keywords { - } - } - -+ #[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 $name { - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { -@@ -338,7 +357,6 @@ macro_rules! impl_deref_if_len_is_1 { - macro_rules! define_punctuation_structs { - ($($token:tt pub struct $name:ident/$len:tt #[$doc:meta])*) => { - $( -- #[cfg_attr(feature = "clone-impls", derive(Copy, Clone))] - #[repr(C)] - #[$doc] - /// -@@ -366,6 +384,16 @@ macro_rules! define_punctuation_structs { - } - } - -+ #[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 $name { - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { -@@ -436,7 +464,6 @@ macro_rules! define_punctuation { - macro_rules! define_delimiters { - ($($token:tt pub struct $name:ident #[$doc:meta])*) => { - $( -- #[cfg_attr(feature = "clone-impls", derive(Copy, Clone))] - #[$doc] - pub struct $name { - pub span: Span, -@@ -458,6 +485,16 @@ macro_rules! define_delimiters { - } - } - -+ #[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 { -@@ -855,7 +892,7 @@ pub mod parsing { - } - - 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)) - } -diff --git a/third_party/rust/syn/src/tt.rs b/third_party/rust/syn/src/tt.rs -index f860eebb4f..8dba0627cd 100644 ---- a/third_party/rust/syn/src/tt.rs -+++ b/third_party/rust/syn/src/tt.rs -@@ -18,8 +18,8 @@ impl<'a> PartialEq for TokenTreeHelper<'a> { - _ => 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() { -@@ -60,7 +60,7 @@ impl<'a> Hash for TokenTreeHelper<'a> { - 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 -diff --git a/third_party/rust/syn/src/ty.rs b/third_party/rust/syn/src/ty.rs -index 4ee59bda2a..fd7c97eab7 100644 ---- a/third_party/rust/syn/src/ty.rs -+++ b/third_party/rust/syn/src/ty.rs -@@ -1,15 +1,11 @@ - 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 -@@ -20,7 +16,7 @@ ast_enum_of_structs! { - // - // 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), - -@@ -77,7 +73,7 @@ ast_enum_of_structs! { - 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, -@@ -90,7 +86,7 @@ ast_struct! { - 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>, -@@ -107,7 +103,7 @@ ast_struct! { - 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, -@@ -119,7 +115,7 @@ 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], -@@ -130,7 +126,7 @@ ast_struct! { - 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![_], -@@ -140,7 +136,7 @@ ast_struct! { - 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, -@@ -150,7 +146,7 @@ ast_struct! { - 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![!], -@@ -160,7 +156,7 @@ ast_struct! { - 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, -@@ -172,7 +168,7 @@ 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>, -@@ -183,7 +179,7 @@ ast_struct! { - 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![*], -@@ -196,7 +192,7 @@ ast_struct! { - 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![&], -@@ -209,7 +205,7 @@ ast_struct! { - 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, -@@ -221,7 +217,7 @@ 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]>, -@@ -232,7 +228,7 @@ ast_struct! { - 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, -@@ -240,111 +236,10 @@ ast_struct! { - } - } - --#[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], -@@ -355,7 +250,7 @@ ast_struct! { - 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>, -@@ -377,7 +272,7 @@ ast_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.* - pub struct Variadic { - pub attrs: Vec<Attribute>, -@@ -388,7 +283,7 @@ ast_struct! { - 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. -@@ -407,10 +302,13 @@ pub mod parsing { - 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) - } - } - -@@ -421,15 +319,17 @@ pub mod parsing { - /// - /// 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]) { -@@ -524,7 +424,7 @@ pub mod parsing { - ..trait_bound - }) - } -- other => other, -+ other @ TypeParamBound::Lifetime(_) => other, - } - } - _ => break, -@@ -549,17 +449,20 @@ pub mod parsing { - })) - } 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![<]) - { -@@ -722,38 +625,58 @@ pub mod parsing { - - 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()?); -- } -- allow_variadic = inputs.empty_or_trailing(); -- inputs -- }, -- variadic: { -- if allow_variadic && args.peek(Token![...]) { -- Some(Variadic { -- attrs: Vec::new(), -+ 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; -+ } -+ -+ if let Some(arg) = parse_bare_fn_arg(&args, allow_mut_self)? { -+ inputs.push_value(BareFnArg { attrs, ..arg }); - } else { -- None -+ has_mut_self = true; - } -- }, -- output: input.call(ReturnType::without_plus)?, -- }) -+ if args.is_empty() { -+ break; -+ } -+ -+ inputs.push_punct(args.parse()?); -+ } -+ -+ inputs -+ }, -+ variadic, -+ output: input.call(ReturnType::without_plus)?, -+ }; -+ -+ if has_mut_self { -+ Ok(None) -+ } else { -+ Ok(Some(bare_fn)) - } - } - -@@ -776,9 +699,27 @@ pub mod parsing { - 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 -+ }, - }) - } - } -@@ -807,9 +748,11 @@ pub mod parsing { - - 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()?; -@@ -844,10 +787,12 @@ pub mod parsing { - - 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()?, -@@ -910,7 +855,8 @@ pub mod parsing { - - impl Parse for TypeParen { - fn parse(input: ParseStream) -> Result<Self> { -- Self::parse(input, false) -+ let allow_plus = false; -+ Self::parse(input, allow_plus) - } - } - -@@ -926,22 +872,72 @@ pub mod parsing { - - 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)) - } - } - -diff --git a/third_party/rust/syn/src/verbatim.rs b/third_party/rust/syn/src/verbatim.rs -new file mode 100644 -index 0000000000..0686352f7a ---- /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 -index 0000000000..7be082e1a2 ---- /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/clone.sh b/third_party/rust/syn/tests/clone.sh -deleted file mode 100755 -index 8e0863cba6..0000000000 ---- 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 -index 13a6c36ae5..7589a07573 100644 ---- a/third_party/rust/syn/tests/common/eq.rs -+++ b/third_party/rust/syn/tests/common/eq.rs -@@ -1,36 +1,35 @@ -+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; -@@ -86,14 +85,6 @@ impl<A: SpanlessEq, B: SpanlessEq> SpanlessEq for (A, B) { - } - } - --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 { -@@ -126,17 +117,19 @@ 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; -@@ -146,14 +139,14 @@ macro_rules! spanless_eq_struct { - }; - - { -- $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)* -@@ -162,14 +155,14 @@ macro_rules! spanless_eq_struct { - }; - - { -- $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] -@@ -263,119 +256,131 @@ macro_rules! spanless_eq_enum { - }; - } - --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 { -@@ -414,44 +419,20 @@ impl SpanlessEq for TokenKind { - - impl SpanlessEq for TokenStream { - fn eq(&self, other: &Self) -> bool { -- SpanlessEq::eq(&expand_tts(self), &expand_tts(other)) -- } --} -- --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 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; - } -- }; -- 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 -index 8b784beed7..a1cc80a16f 100644 ---- a/third_party/rust/syn/tests/common/mod.rs -+++ b/third_party/rust/syn/tests/common/mod.rs -@@ -1,5 +1,6 @@ - #![allow(dead_code)] - -+use rayon::ThreadPoolBuilder; - use std::env; - - pub mod eq; -@@ -12,3 +13,15 @@ pub fn abort_after() -> usize { - 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 -index 41d192f6fb..192828fedd 100644 ---- a/third_party/rust/syn/tests/common/parse.rs -+++ b/third_party/rust/syn/tests/common/parse.rs -@@ -1,20 +1,20 @@ --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()), -@@ -32,7 +32,7 @@ pub fn libsyntax_expr(input: &str) -> Option<P<ast::Expr>> { - Ok(Some(e)) => Some(e), - Ok(None) => None, - Err(_) => { -- errorf!("libsyntax panicked\n"); -+ errorf!("librustc panicked\n"); - None - } - } -diff --git a/third_party/rust/syn/tests/debug/gen.rs b/third_party/rust/syn/tests/debug/gen.rs -index 8450c09ecf..85a1a39079 100644 ---- a/third_party/rust/syn/tests/debug/gen.rs -+++ b/third_party/rust/syn/tests/debug/gen.rs -@@ -2,7 +2,7 @@ - // 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; -@@ -1039,9 +1039,9 @@ impl Debug for Lite<syn::Expr> { - } - 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) => { -@@ -2116,9 +2116,9 @@ impl Debug for Lite<syn::ForeignItem> { - } - 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!(), -@@ -2432,9 +2432,9 @@ impl Debug for Lite<syn::ImplItem> { - } - 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!(), -@@ -2940,9 +2940,9 @@ impl Debug for Lite<syn::Item> { - } - 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!(), -@@ -3437,9 +3437,9 @@ impl Debug for Lite<syn::Lit> { - } - 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(()) - } - } -@@ -3878,9 +3878,9 @@ impl Debug for Lite<syn::Pat> { - } - 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) => { -@@ -4674,9 +4674,9 @@ impl Debug for Lite<syn::TraitItem> { - } - 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!(), -@@ -5040,9 +5040,9 @@ impl Debug for Lite<syn::Type> { - } - 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!(), -diff --git a/third_party/rust/syn/tests/debug/mod.rs b/third_party/rust/syn/tests/debug/mod.rs -index c1180532ec..cefebacef7 100644 ---- a/third_party/rust/syn/tests/debug/mod.rs -+++ b/third_party/rust/syn/tests/debug/mod.rs -@@ -1,10 +1,7 @@ --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; -@@ -66,7 +63,15 @@ impl Debug for Lite<Literal> { - - 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() -+ } - } - } - -diff --git a/third_party/rust/syn/tests/features/error.rs b/third_party/rust/syn/tests/features/error.rs -deleted file mode 100644 -index 10ac88965d..0000000000 ---- a/third_party/rust/syn/tests/features/error.rs -+++ /dev/null -@@ -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 -index 83fbe13e7e..0000000000 ---- 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) => { -- $mod -- }; --} -- --#[cfg(not(all( -- feature = "derive", -- feature = "full", -- feature = "parsing", -- feature = "printing", -- feature = "visit", -- feature = "visit-mut", -- feature = "fold", -- feature = "clone-impls", -- feature = "extra-traits", -- feature = "proc-macro", --)))] --hide_from_rustfmt! { -- mod error; --} -diff --git a/third_party/rust/syn/tests/macros/mod.rs b/third_party/rust/syn/tests/macros/mod.rs -index c72fd01058..3994615fc4 100644 ---- a/third_party/rust/syn/tests/macros/mod.rs -+++ b/third_party/rust/syn/tests/macros/mod.rs -@@ -1,5 +1,3 @@ --extern crate proc_macro2; -- - #[path = "../debug/mod.rs"] - pub mod debug; - -@@ -42,18 +40,18 @@ macro_rules! snapshot_impl { - (($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)*) => { -diff --git a/third_party/rust/syn/tests/repo/mod.rs b/third_party/rust/syn/tests/repo/mod.rs -index c22cb03758..1d3e1f0e74 100644 ---- a/third_party/rust/syn/tests/repo/mod.rs -+++ b/third_party/rust/syn/tests/repo/mod.rs -@@ -1,8 +1,37 @@ --extern crate walkdir; -+mod progress; - --use std::process::Command; -+use self::progress::Progress; -+use anyhow::Result; -+use flate2::read::GzDecoder; -+use std::fs; -+use std::path::Path; -+use tar::Archive; -+use walkdir::DirEntry; - --use self::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", -+ -+ // 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", -+ -+ // 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(); -@@ -12,49 +41,95 @@ pub fn base_dir_filter(entry: &DirEntry) -> bool { - 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 -index 0000000000..28c8a44b12 ---- /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 -index f868fbcc20..0efef5976f 100644 ---- a/third_party/rust/syn/tests/test_asyncness.rs -+++ b/third_party/rust/syn/tests/test_asyncness.rs -@@ -1,7 +1,3 @@ --extern crate syn; -- --mod features; -- - #[macro_use] - mod macros; - -@@ -12,16 +8,16 @@ 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, -+ } - "###); - } - -@@ -30,12 +26,12 @@ 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 -index aff6294fc3..c26bd090ec 100644 ---- a/third_party/rust/syn/tests/test_attribute.rs -+++ b/third_party/rust/syn/tests/test_attribute.rs -@@ -1,7 +1,3 @@ --extern crate syn; -- --mod features; -- - #[macro_use] - mod macros; - -@@ -13,14 +9,14 @@ 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, -+ }, -+ ], -+ }) - "###); - } - -@@ -29,17 +25,17 @@ 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, -+ } - "###); - } - -@@ -48,37 +44,37 @@ 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, -+ }, -+ } - "###); - } - -@@ -87,19 +83,19 @@ 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), -+ ], -+ } - "###); - } - -@@ -108,26 +104,26 @@ 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, -+ }, -+ ], -+ })), -+ ], -+ } - "###); - } - -@@ -136,29 +132,29 @@ 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, -+ }), -+ ], -+ } - "###); - } - -@@ -167,31 +163,31 @@ 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, -+ }, -+ }), -+ ], -+ } - "###); - } - -@@ -200,68 +196,68 @@ 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, -+ }, -+ ], -+ })), -+ ], -+ } - "###); - } - -@@ -270,21 +266,63 @@ 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, -+ }), -+ ], -+ } - "###); - } - -diff --git a/third_party/rust/syn/tests/test_derive_input.rs b/third_party/rust/syn/tests/test_derive_input.rs -index de68240166..bf1ebdb67d 100644 ---- a/third_party/rust/syn/tests/test_derive_input.rs -+++ b/third_party/rust/syn/tests/test_derive_input.rs -@@ -1,8 +1,3 @@ --extern crate quote; --extern crate syn; -- --mod features; -- - #[macro_use] - mod macros; - -@@ -16,15 +11,15 @@ fn test_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, -+ }, -+ } - "###); - } - -@@ -39,105 +34,105 @@ fn test_struct() { - }; - - 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, -+ }, -+ ], -+ })), -+ ], -+ } - "###); - } - -@@ -151,46 +146,46 @@ fn test_union() { - }; - - 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, -+ }, -+ ], -+ }, -+ }, -+ }, -+ ], -+ }, -+ }, -+ } - "###); - } - -@@ -212,118 +207,118 @@ fn test_enum() { - }; - - 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 -@@ -333,27 +328,27 @@ fn test_enum() { - .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, -+ }, -+ ], -+ }), -+ ] - "###); - } - -@@ -366,34 +361,34 @@ fn test_attr_with_path() { - }; - - 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()); -@@ -407,29 +402,29 @@ fn test_attr_with_non_mod_style_path() { - }; - - 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()); -@@ -443,48 +438,48 @@ fn test_attr_with_mod_style_path_with_self() { - }; - - 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, -+ }, -+ ], -+ }) - "###); - } - -@@ -496,55 +491,55 @@ fn test_pub_restricted() { - }; - - 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, -+ }, -+ } - "###); - } - -@@ -555,15 +550,15 @@ fn test_vis_crate() { - }; - - 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, -+ }, -+ } - "###); - } - -@@ -574,24 +569,24 @@ fn test_pub_restricted_crate() { - }; - - 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, -+ }, -+ } - "###); - } - -@@ -602,24 +597,24 @@ fn test_pub_restricted_super() { - }; - - 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, -+ }, -+ } - "###); - } - -@@ -630,25 +625,25 @@ fn test_pub_restricted_in_super() { - }; - - 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, -+ }, -+ } - "###); - } - -@@ -659,15 +654,15 @@ fn test_fields_on_unit_struct() { - }; - - 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 { -@@ -688,47 +683,47 @@ fn test_fields_on_named_struct() { - }; - - 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 { -@@ -737,38 +732,38 @@ fn test_fields_on_named_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, -+ }, -+ ], -+ }, -+ }, -+ }, -+ ] - "###); - } - -@@ -779,44 +774,44 @@ fn test_fields_on_tuple_struct() { - }; - - 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 { -@@ -825,34 +820,34 @@ fn test_fields_on_tuple_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, -+ }, -+ ], -+ }, -+ }, -+ }, -+ ] - "###); - } - -@@ -864,34 +859,34 @@ fn test_ambiguous_crate() { - }; - - 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 -index c8a11cec2c..b2b65a254f 100644 ---- 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(); -- -- snapshot!(expr, @r###" -- ⋮Expr::Await { -- ⋮ base: Expr::Path { -- ⋮ path: Path { -- ⋮ segments: [ -- ⋮ PathSegment { -- ⋮ ident: "fut", -- ⋮ arguments: None, -- ⋮ }, -- ⋮ ], -- ⋮ }, -- ⋮ }, -- ⋮} -+ let tokens = quote!(fut.await); -+ -+ 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 -index 55c79e066b..b29434a147 100644 ---- a/third_party/rust/syn/tests/test_generics.rs -+++ b/third_party/rust/syn/tests/test_generics.rs -@@ -1,8 +1,3 @@ --extern crate quote; --extern crate syn; -- --mod features; -- - #[macro_use] - mod macros; - -@@ -16,90 +11,90 @@ fn test_split_for_impl() { - }; - - 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; -@@ -131,46 +126,46 @@ fn test_split_for_impl() { - 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, -+ }, -+ ], -+ }, -+ }) - "###); - } - -@@ -187,76 +182,76 @@ fn test_fn_precedence_in_where_clause() { - }; - - 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(); -@@ -270,7 +265,7 @@ fn test_fn_precedence_in_where_clause() { - 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"); -diff --git a/third_party/rust/syn/tests/test_grouping.rs b/third_party/rust/syn/tests/test_grouping.rs -index 1558a47b4b..a0fe716390 100644 ---- a/third_party/rust/syn/tests/test_grouping.rs -+++ b/third_party/rust/syn/tests/test_grouping.rs -@@ -1,8 +1,3 @@ --extern crate proc_macro2; --extern crate syn; -- --mod features; -- - #[macro_use] - mod macros; - -@@ -28,31 +23,31 @@ fn test_grouping() { - 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 -index bec00a70c9..ee01bfcc9f 100644 ---- a/third_party/rust/syn/tests/test_ident.rs -+++ b/third_party/rust/syn/tests/test_ident.rs -@@ -1,8 +1,3 @@ --extern crate proc_macro2; --extern crate syn; -- --mod features; -- - use proc_macro2::{Ident, Span, TokenStream}; - use std::str::FromStr; - use syn::Result; -diff --git a/third_party/rust/syn/tests/test_item.rs b/third_party/rust/syn/tests/test_item.rs -new file mode 100644 -index 0000000000..74ac4baec6 ---- /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 -index 1cf7157e6f..2c8359c157 100644 ---- a/third_party/rust/syn/tests/test_iterators.rs -+++ b/third_party/rust/syn/tests/test_iterators.rs -@@ -1,10 +1,5 @@ - use syn::punctuated::{Pair, Punctuated}; -- --extern crate quote; --#[macro_use] --extern crate syn; -- --mod features; -+use syn::Token; - - #[macro_use] - mod macros; -diff --git a/third_party/rust/syn/tests/test_lit.rs b/third_party/rust/syn/tests/test_lit.rs -index 1e8f49d19b..e995f2287f 100644 ---- a/third_party/rust/syn/tests/test_lit.rs -+++ b/third_party/rust/syn/tests/test_lit.rs -@@ -1,13 +1,11 @@ --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) -@@ -50,6 +48,9 @@ fn strings() { - "contains\nnewlinesescaped newlines", - ); - test_string("r\"raw\nstring\\\nhere\"", "raw\nstring\\\nhere"); -+ test_string("\"...\"q", "..."); -+ test_string("r\"...\"q", "..."); -+ test_string("r##\"...\"##q", "..."); - } - - #[test] -@@ -79,6 +80,9 @@ fn byte_strings() { - 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] -@@ -100,6 +104,7 @@ fn bytes() { - test_byte("b'\\t'", b'\t'); - test_byte("b'\\''", b'\''); - test_byte("b'\"'", b'"'); -+ test_byte("b'a'q", b'a'); - } - - #[test] -@@ -125,6 +130,7 @@ fn chars() { - test_char("'\\''", '\''); - test_char("'\"'", '"'); - test_char("'\\u{1F415}'", '\u{1F415}'); -+ test_char("'a'q", 'a'); - } - - #[test] -@@ -185,4 +191,59 @@ fn floats() { - 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 -index 547472d6f4..d37dda948a 100644 ---- a/third_party/rust/syn/tests/test_meta.rs -+++ b/third_party/rust/syn/tests/test_meta.rs -@@ -1,7 +1,3 @@ --extern crate syn; -- --mod features; -- - #[macro_use] - mod macros; - -@@ -12,14 +8,14 @@ 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, -+ }, -+ ], -+ }) - "###); - } - -@@ -29,31 +25,31 @@ fn test_parse_meta_name_value() { - 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()); -@@ -65,31 +61,31 @@ fn test_parse_meta_name_value_with_keyword() { - 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()); -@@ -101,31 +97,31 @@ fn test_parse_meta_name_value_with_bool() { - 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()); -@@ -137,35 +133,35 @@ fn test_parse_meta_item_list_lit() { - 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()); -@@ -177,133 +173,133 @@ fn test_parse_meta_item_multiple() { - 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()); -@@ -316,28 +312,28 @@ fn test_parse_nested_meta() { - - 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 -index f09495187f..57a3c7c38c 100644 ---- a/third_party/rust/syn/tests/test_parse_buffer.rs -+++ b/third_party/rust/syn/tests/test_parse_buffer.rs -@@ -1,7 +1,7 @@ --#[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")] -@@ -53,3 +53,38 @@ fn smuggled_speculative_cursor_into_brackets() { - - 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 -index 0000000000..76bd065777 ---- /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 -index 1343aa646f..73388dd79d 100644 ---- a/third_party/rust/syn/tests/test_pat.rs -+++ b/third_party/rust/syn/tests/test_pat.rs -@@ -1,10 +1,5 @@ --extern crate quote; --extern crate syn; -- --mod features; -- - use quote::quote; --use syn::Pat; -+use syn::{Item, Pat, Stmt}; - - #[test] - fn test_pat_ident() { -@@ -21,3 +16,23 @@ fn test_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 -index 0000000000..2ce12066f5 ---- /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 -index 53ee66e372..a586b3fe48 100644 ---- a/third_party/rust/syn/tests/test_precedence.rs -+++ b/third_party/rust/syn/tests/test_precedence.rs -@@ -4,35 +4,26 @@ - - //! 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; -@@ -73,7 +64,7 @@ fn test_simple_precedence() { - continue; - }; - -- let pf = match test_expressions(vec![expr]) { -+ let pf = match test_expressions(Edition::Edition2018, vec![expr]) { - (1, 0) => "passed", - (0, 1) => { - failed += 1; -@@ -91,8 +82,8 @@ fn test_simple_precedence() { - - /// 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 { -@@ -118,15 +109,6 @@ fn test_rustc_precedence() { - 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(); -@@ -134,8 +116,9 @@ fn test_rustc_precedence() { - - 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); -@@ -169,36 +152,36 @@ fn test_rustc_precedence() { - } - } - --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); - } - } - }); -@@ -206,54 +189,106 @@ fn test_expressions(exprs: Vec<syn::Expr>) -> (usize, usize) { - (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 -@@ -267,25 +302,8 @@ fn libsyntax_brackets(mut libsyntax_expr: P<ast::Expr>) -> Option<P<ast::Expr>> - 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 -@@ -295,11 +313,11 @@ fn libsyntax_brackets(mut libsyntax_expr: P<ast::Expr>) -> Option<P<ast::Expr>> - } - - 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) - } - } - -@@ -318,14 +336,33 @@ fn syn_brackets(syn_expr: syn::Expr) -> syn::Expr { - 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. -@@ -360,7 +397,10 @@ fn collect_exprs(file: syn::File) -> Vec<syn::Expr> { - 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![], -diff --git a/third_party/rust/syn/tests/test_receiver.rs b/third_party/rust/syn/tests/test_receiver.rs -new file mode 100644 -index 0000000000..923df96ba9 ---- /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 -index 2fc9cecd86..260dd0c3d9 100644 ---- a/third_party/rust/syn/tests/test_round_trip.rs -+++ b/third_party/rust/syn/tests/test_round_trip.rs -@@ -2,22 +2,20 @@ - #![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; -@@ -38,8 +36,8 @@ 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 { -@@ -78,11 +76,12 @@ fn test_round_trip() { - } - }; - 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(); -@@ -93,7 +92,7 @@ fn test_round_trip() { - 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() - ); -@@ -101,10 +100,10 @@ fn test_round_trip() { - 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; - } -@@ -130,7 +129,7 @@ fn test_round_trip() { - }) - }); - 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); -@@ -147,7 +146,7 @@ fn test_round_trip() { - } - } - --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 -index 0000000000..dc26b9aab3 ---- /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 -index aadf42e3af..180d859916 100644 ---- a/third_party/rust/syn/tests/test_should_parse.rs -+++ b/third_party/rust/syn/tests/test_should_parse.rs -@@ -1,7 +1,3 @@ --extern crate syn; -- --mod features; -- - macro_rules! should_parse { - ($name:ident, { $($in:tt)* }) => { - #[test] -diff --git a/third_party/rust/syn/tests/test_size.rs b/third_party/rust/syn/tests/test_size.rs -index 386d4df889..01e8401158 100644 ---- a/third_party/rust/syn/tests/test_size.rs -+++ b/third_party/rust/syn/tests/test_size.rs -@@ -1,7 +1,5 @@ - #![cfg(target_pointer_width = "64")] - --mod features; -- - use std::mem; - use syn::*; - -diff --git a/third_party/rust/syn/tests/test_stmt.rs b/third_party/rust/syn/tests/test_stmt.rs -new file mode 100644 -index 0000000000..d68b47fd2f ---- /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 -index 70a9a72aab..5b00448af8 100644 ---- a/third_party/rust/syn/tests/test_token_trees.rs -+++ b/third_party/rust/syn/tests/test_token_trees.rs -@@ -1,9 +1,3 @@ --extern crate proc_macro2; --extern crate quote; --extern crate syn; -- --mod features; -- - #[macro_use] - mod macros; - -@@ -21,7 +15,11 @@ fn test_struct() { - } - "; - -- 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] -diff --git a/third_party/rust/syn/tests/test_ty.rs b/third_party/rust/syn/tests/test_ty.rs -new file mode 100644 -index 0000000000..9cbdcd6b99 ---- /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 `$ty<T>` -+ let tokens = TokenStream::from_iter(vec![ -+ TokenTree::Group(Group::new(Delimiter::None, quote! { ty })), -+ TokenTree::Punct(Punct::new('<', Spacing::Alone)), -+ TokenTree::Ident(Ident::new("T", Span::call_site())), -+ TokenTree::Punct(Punct::new('>', Spacing::Alone)), -+ ]); -+ -+ snapshot!(tokens as Type, @r###" -+ Type::Path { -+ path: Path { -+ segments: [ -+ PathSegment { -+ ident: "ty", -+ arguments: PathArguments::AngleBracketed { -+ args: [ -+ Type(Type::Path { -+ path: Path { -+ segments: [ -+ PathSegment { -+ ident: "T", -+ arguments: None, -+ }, -+ ], -+ }, -+ }), -+ ], -+ }, -+ }, -+ ], -+ }, -+ } -+ "###); -+} -diff --git a/third_party/rust/syn/tests/test_visibility.rs b/third_party/rust/syn/tests/test_visibility.rs -new file mode 100644 -index 0000000000..c3d0ac7a5b ---- /dev/null -+++ b/third_party/rust/syn/tests/test_visibility.rs -@@ -0,0 +1,145 @@ -+#[macro_use] -+mod macros; -+ -+use proc_macro2::{Delimiter, Group, Ident, Punct, Spacing, Span, TokenStream, TokenTree}; -+use std::iter::FromIterator; -+use syn::parse::{Parse, ParseStream}; -+use syn::{DeriveInput, Result, Visibility}; -+ -+#[derive(Debug)] -+struct VisRest { -+ vis: Visibility, -+ rest: TokenStream, -+} -+ -+impl Parse for VisRest { -+ fn parse(input: ParseStream) -> Result<Self> { -+ Ok(VisRest { -+ vis: input.parse()?, -+ rest: input.parse()?, -+ }) -+ } -+} -+ -+macro_rules! assert_vis_parse { -+ ($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 -index a81b3df4d0..a1a670d9ed 100644 ---- a/third_party/rust/syn/tests/zzz_stable.rs -+++ b/third_party/rust/syn/tests/zzz_stable.rs -@@ -1,7 +1,5 @@ - #![cfg(syn_disable_nightly_tests)] - --extern crate termcolor; -- - use std::io::{self, Write}; - use termcolor::{Color, ColorChoice, ColorSpec, StandardStream, WriteColor}; - -@@ -10,7 +8,7 @@ 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. - ‖ - "; --- -2.28.0 - |