Document that mpmc channels deliver an item to one receiver. #140158
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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 { ``` 
Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
Collaborator
rustbot added A-attributes 
Member
| I think you have unrelated commits in your branch? |
Member
| @rustbot author |
rustbot added S-waiting-on-author Collaborator
| Reminder, once the PR becomes ready for a review, use |
Member
| The actual change is a library doc change, so r? libs |
Member
| As this affects the public API (even though unstably), assigning a random T-libs member r? @Amanieu |
Collaborator
| ☔ The latest upstream changes (presumably #140180) made this pull request unmergeable. Please resolve the merge conflicts. |
| @andrew-otiv I believe you meant to merge just your |
lolbinarycat removed T-rustdoc 
Member
| LGTM but the conflicts need to be resolved with a rebase. |
Member
| @andrew-otiv any updates on this? this requires a rebase and then possibly can be merged. |
Contributor
| One thing to note (though spelling this out explicitly anyway may still be desirable): |
Member
| Closing this as it's superceded by #150021 |
rustbot removed the S-waiting-on-author matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Dec 15, 2025
document that mpmc channels deliver an item to (at most) one receiver Tiny documentation change related to mpmc (tracking issue rust-lang#126840). This PR is meant to supersede rust-lang#140158 due to it's inactivity. It is essentially the same addition structured a little differently.
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Dec 15, 2025
document that mpmc channels deliver an item to (at most) one receiver Tiny documentation change related to mpmc (tracking issue rust-lang#126840). This PR is meant to supersede rust-lang#140158 due to it's inactivity. It is essentially the same addition structured a little differently.
Zalathar added a commit to Zalathar/rust that referenced this pull request Dec 16, 2025
document that mpmc channels deliver an item to (at most) one receiver Tiny documentation change related to mpmc (tracking issue rust-lang#126840). This PR is meant to supersede rust-lang#140158 due to it's inactivity. It is essentially the same addition structured a little differently.
Zalathar added a commit to Zalathar/rust that referenced this pull request Dec 16, 2025
document that mpmc channels deliver an item to (at most) one receiver Tiny documentation change related to mpmc (tracking issue rust-lang#126840). This PR is meant to supersede rust-lang#140158 due to it's inactivity. It is essentially the same addition structured a little differently.
rust-timer added a commit that referenced this pull request Dec 16, 2025
Rollup merge of #150021 - david-d-h:main, r=ChrisDenton document that mpmc channels deliver an item to (at most) one receiver Tiny documentation change related to mpmc (tracking issue #126840). This PR is meant to supersede #140158 due to it's inactivity. It is essentially the same addition structured a little differently.
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#126840 (comment)