Rollup of 3 pull requests #134267
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Rollup of 3 pull requests #134267
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Lexing precedes parsing, as you'd expect: `Lexer` creates a
`TokenStream` and `Parser` then parses that `TokenStream`.
But, in a horrendous violation of layering abstractions and common
sense, `Lexer` depends on `Parser`! The `Lexer::unclosed_delim_err`
method does some error recovery that relies on creating a `Parser` to do
some post-processing of the `TokenStream` that the `Lexer` just created.
This commit just removes `unclosed_delim_err`. This change removes
`Lexer`'s dependency on `Parser`, and also means that `lex_token_tree`'s
return value can have a more typical form.
The cost is slightly worse error messages in two obscure cases, as shown
in these tests:
- tests/ui/parser/brace-in-let-chain.rs: there is slightly less
explanation in this case involving an extra `{`.
- tests/ui/parser/diff-markers/unclosed-delims{,-in-macro}.rs: the diff
marker detection is no longer supported (because that detection is
implemented in the parser).
In my opinion this cost is outweighed by the magnitude of the code
cleanup.
Try to evaluate constants in legacy mangling Best reviewed commit by commit. It seems kind of odd to treat literals differently from unevaluated free constants. So let's evaluate those constants and only fall back to `_` rendering if that fails to result in an integral constant
…=compiler-errors
Remove `Lexer`'s dependency on `Parser`.
Lexing precedes parsing, as you'd expect: `Lexer` creates a `TokenStream` and `Parser` then parses that `TokenStream`.
But, in a horrendous violation of layering abstractions and common sense, `Lexer` depends on `Parser`! The `Lexer::unclosed_delim_err` method does some error recovery that relies on creating a `Parser` to do some post-processing of the `TokenStream` that the `Lexer` just created.
This commit just removes `unclosed_delim_err`. This change removes `Lexer`'s dependency on `Parser`, and also means that `lex_token_tree`'s return value can have a more typical form.
The cost is slightly worse error messages in two obscure cases, as shown in these tests:
- tests/ui/parser/brace-in-let-chain.rs: there is slightly less explanation in this case involving an extra `{`.
- tests/ui/parser/diff-markers/unclosed-delims{,-in-macro}.rs: the diff marker detection is no longer supported (because that detection is implemented in the parser).
In my opinion this cost is outweighed by the magnitude of the code cleanup.
r? ````@chenyukang````
…er-errors On Neutrino QNX, reduce the need to set archiver via environment variables This adds support for automatically selecting the correct `ar` tool when compiling for Neutrino QNX. Once rust-lang/cc-rs#1319 is merged and a new cc version is integrated, all environment variables of the [Neutrino documentation](https://github.com/rust-lang/rust/blob/stable/src/doc/rustc/src/platform-support/nto-qnx.md) can be removed. CC: `````@jonathanpallant````` `````@japaric````` `````@gh-tr````` `````@AkhilTThomas`````
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Dec 13, 2024
Rollup of 3 pull requests Successful merges: - rust-lang#134081 (Try to evaluate constants in legacy mangling) - rust-lang#134192 (Remove `Lexer`'s dependency on `Parser`.) - rust-lang#134211 (On Neutrino QNX, reduce the need to set archiver via environment variables) r? `@ghost` `@rustbot` modify labels: rollup try-job: dist-x86_64-linux
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could be #134081 maybe |
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☀️ Try build successful - checks-actions |
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Successful merges:
Lexer's dependency onParser. #134192 (RemoveLexer's dependency onParser.)r? @ghost
@rustbot modify labels: rollup
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try-job: dist-x86_64-linux