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Document that mpmc channels deliver an item to one receiver. #140158

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nnethercote and others added 8 commits April 22, 2025 12:35
By replacing them with `{Open,Close}{Param,Brace,Bracket,Invisible}`.

PR rust-lang#137902 made `ast::TokenKind` more like `lexer::TokenKind` by
replacing the compound `BinOp{,Eq}(BinOpToken)` variants with fieldless
variants `Plus`, `Minus`, `Star`, etc. This commit does a similar thing
with delimiters. It also makes `ast::TokenKind` more similar to
`parser::TokenType`.

This requires a few new methods:
- `TokenKind::is_{,open_,close_}delim()` replace various kinds of
  pattern matches.
- `Delimiter::as_{open,close}_token_kind` are used to convert
  `Delimiter` values to `TokenKind`.

Despite these additions, it's a net reduction in lines of code. This is
because e.g. `token::OpenParen` is so much shorter than
`token::OpenDelim(Delimiter::Parenthesis)` that many multi-line forms
reduce to single line forms. And many places where the number of lines
doesn't change are still easier to read, just because the names are
shorter, e.g.:
```
-   } else if self.token != token::CloseDelim(Delimiter::Brace) {
+   } else if self.token != token::CloseBrace {
```
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rustbot commented Apr 22, 2025

r? @jieyouxu

rustbot has assigned @jieyouxu.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

@rustbot rustbot added A-attributes Area: Attributes (`#[…]`, `#![…]`) A-run-make Area: port run-make Makefiles to rmake.rs S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. T-rustdoc-frontend Relevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output. labels Apr 22, 2025
@andrew-otiv andrew-otiv mentioned this pull request Apr 22, 2025
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I think you have unrelated commits in your branch?

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@rustbot rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Apr 22, 2025
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rustbot commented Apr 22, 2025

Reminder, once the PR becomes ready for a review, use @rustbot ready.

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The actual change is a library doc change, so r? libs

@rustbot rustbot assigned jhpratt and unassigned jieyouxu Apr 22, 2025
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jhpratt commented Apr 23, 2025

As this affects the public API (even though unstably), assigning a random T-libs member

r? @Amanieu

@rustbot rustbot assigned Amanieu and unassigned jhpratt Apr 23, 2025
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bors commented Apr 23, 2025

☔ The latest upstream changes (presumably #140180) made this pull request unmergeable. Please resolve the merge conflicts.

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A-attributes Area: Attributes (`#[…]`, `#![…]`) A-run-make Area: port run-make Makefiles to rmake.rs S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. T-rustdoc-frontend Relevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output.
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