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ytmimi
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@ytmimi ytmimi commented Apr 1, 2025

Bumping the toolchain version as part of a git subtree push

current toolchain (nightly-2025-01-02):

  • 1.85.0-nightly (45d11e51b 2025-01-01)

latest toolchain (nightly-2025-04-01):

  • 1.88.0-nightly (0b45675cf 2025-03-31)

jieyouxu and others added 30 commits January 7, 2025 20:49
Only treat plain literal patterns as short

See rust-lang/rust#134228 (comment) and rust-lang/rust#134228 (comment) for context. We never wanted to treat const blocks and paths as short, only plain literals.

I don't know how to write a test for this, it.s not clear to me how the short pattern check actually affects the formatting
`BinOpToken` is badly named, because it only covers the assignable
binary ops and excludes comparisons and `&&`/`||`. Its use in
`ast::TokenKind` does allow a small amount of code sharing, but it's a
clumsy factoring.

This commit removes `ast::TokenKind::BinOp{,Eq}`, replacing each one
with 10 individual variants. This makes `ast::TokenKind` more similar to
`rustc_lexer::TokenKind`, which has individual variants for all
operators.

Although the number of lines of code increases, the number of chars
decreases due to the frequent use of shorter names like `token::Plus`
instead of `token::BinOp(BinOpToken::Plus)`.
For consistency with `rustc_lexer::TokenKind::Bang`, and because other
`ast::TokenKind` variants generally have syntactic names instead of
semantic names (e.g. `Star` and `DotDot` instead of `Mul` and `Range`).
Implement `#[cfg]` in `where` clauses

This PR implements #115590, which supports `#[cfg]` attributes in `where` clauses.

The biggest change is, that it adds `AttrsVec` and  `NodeId` to the `ast::WherePredicate` and `HirId` to the `hir::WherePredicate`.
Rollup of 12 pull requests

Successful merges:

 - #135767 (Future incompatibility warning `unsupported_fn_ptr_calling_conventions`: Also warn in dependencies)
 - #137852 (Remove layouting dead code for non-array SIMD types.)
 - #137863 (Fix pretty printing of unsafe binders)
 - #137882 (do not build additional stage on compiler paths)
 - #137894 (Revert "store ScalarPair via memset when one side is undef and the other side can be memset")
 - #137902 (Make `ast::TokenKind` more like `lexer::TokenKind`)
 - #137921 (Subtree update of `rust-analyzer`)
 - #137922 (A few cleanups after the removal of `cfg(not(parallel))`)
 - #137939 (fix order on shl impl)
 - #137946 (Fix docker run-local docs)
 - #137955 (Always allow rustdoc-json tests to contain long lines)
 - #137958 (triagebot.toml: Don't label `test/rustdoc-json` as A-rustdoc-search)

r? `@ghost`
`@rustbot` modify labels: rollup
…matsakis

Ergonomic ref counting

This is an experimental first version of ergonomic ref counting.

This first version implements most of the RFC but doesn't implement any of the optimizations. This was left for following iterations.

RFC: rust-lang/rfcs#3680
Tracking issue: rust-lang/rust#132290
Project goal: rust-lang/rust-project-goals#107

r? ```@nikomatsakis```
This involved fixing the span when parsing .yield
They're dodgy, covering all the keywords, including weak ones, and
edition-specific ones without considering the edition. They have a
single use in rustfmt. This commit changes that use to
`is_reserved_ident`, which is a much more widely used alternative and is
good enough, judging by the lack of effect on the test suite.
Since `{ ident: ident }` is a parse error, these fields are dead.
Visitors track whether an assoc item is in a trait impl or an inherent impl

`AssocCtxt::Impl` now contains an `of_trait` field. This allows ast lowering and nameres to not have to track whether we're in a trait impl or an inherent impl.
…mpiler-errors

Mostly parser: Eliminate code that's been dead / semi-dead since the removal of type ascription syntax

**Disclaimer**: This PR is intended to mostly clean up code as opposed to bringing about behavioral changes. Therefore it doesn't aim to address any of the 'FIXME: remove after a month [dated: 2023-05-02]: "type ascription syntax has been removed, see issue [#]101728"'.

---

By commit:

1. Removes truly dead code:
   * Since 1.71 (#109128) `let _ = { f: x };` is a syntax error as opposed to a semantic error which allows the parse-time diagnostic (suggestion) "*struct literal body without path // you might have forgotten […]*" to kick in.
   * The analysis-time diagnostic (suggestion) from <=1.70 "*cannot find value \`f\` in this scope // you might have forgotten […]*" is therefore no longer reachable.
2. Updates `is_certainly_not_a_block` to be in line with the current grammar:
   * The seq. `{ ident:` is definitely not the start of a block. Before the removal of ty ascr, `{ ident: ty_start` would begin a block expr.
   * This shouldn't make more code compile IINM, it should *ultimately* only affect diagnostics.
   * For example, `if T { f: () } {}` will now be interpreted as an `if` with struct lit `T { f: () }` as its *condition* (which is banned in the parser anyway) as opposed to just `T` (with the *consequent* being `f : ()` which is also invalid (since 1.71)). The diagnostics are almost the same because we have two separate parse recovery procedures + diagnostics: `StructLiteralNeedingParens` (*invalid struct lit*) before and `StructLiteralNotAllowedHere` (*struct lits aren't allowed here*) now, as you can see from the diff.
   * (As an aside, even before this PR, fn `maybe_suggest_struct_literal` should've just used the much older & clearer `StructLiteralNotAllowedHere`)
   * NB: This does sadly regress the compiler output for `tests/ui/parser/type-ascription-in-pattern.rs` but that can be fixed in follow-up PRs. It's not super important IMO and a natural consequence.
3. Removes code that's become dead due to the prior commit.
   * Basically reverts #106620 + #112475 (without regressing rustc's output!).
   * Now the older & more robust parse recovery procedure (cc `StructLiteralNotAllowedHere`) takes care of the cases the removed code used to handle.
   * This automatically fixes the suggestions for \[[playground](https://play.rust-lang.org/?version=stable&mode=debug&edition=2024&gist=7e2030163b11ee96d17adc3325b01780)\]:
     * `if Ty::<i32> { f: K }.m() {}`: `if Ty::<i32> { SomeStruct { f: K } }.m() {}` (broken) → ` if (Ty::<i32> { f: K }).m() {}`
     * `if <T as Trait>::Out { f: K::<> }.m() {}`: `if <T as Trait>(::Out { f: K::<> }).m() {}` (broken) → `if (<T as Trait>::Out { f: K::<> }).m() {}`
4. Merge and simplify UI tests pertaining to this issue, so it's easier to add more regression tests like for the two cases mentioned above.
5. Merge UI tests and add the two regression tests.

Best reviewed commit by commit (on request I'll partially squash after approval).
ytmimi and others added 3 commits March 31, 2025 22:51
Bumping the toolchain version as part of a git subtree push

current toolchain (nightly-2025-01-02):
  - 1.85.0-nightly (45d11e51b 2025-01-01)

latest toolchain (nightly-2025-04-01):
  - 1.88.0-nightly (0b45675cf 2025-03-31)
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ytmimi commented Apr 1, 2025

A lot of diffs in the Diff Check.

I think they're mostly related to disabling overflow_delimited_expr in r-l/rust prior to style_edition=2024 stabilization.

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ytmimi commented Apr 2, 2025

Closing in favor of #6531

@ytmimi ytmimi closed this Apr 2, 2025
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