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Current places where `Interpolated` is used are going to change to
instead use invisible delimiters. This prepares for that.
- It adds invisible delimiter cases to the `can_begin_*`/`may_be_*`
methods and the `failed_to_match_macro` that are equivalent to the
existing `Interpolated` cases.
- It adds panics/asserts in some places where invisible delimiters
should never occur.
- In `Parser::parse_struct_fields` it excludes an ident + invisible
delimiter from special consideration in an error message, because
that's quite different to an ident + paren/brace/bracket.
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It's not used meaningfully yet, but will be needed to get rid of
interpolated tokens.
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Use `token_descr` more in error messages
This is the first two commits from #124141, put into their own PR to get things rolling. Commit messages have the details.
r? ``@estebank``
cc ``@petrochenkov``
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compiler: apply clippy::clone_on_ref_ptr for CI
Apply lint https://rust-lang.github.io/rust-clippy/master/index.html#/clone_on_ref_ptr for compiler, also see https://github.com/rust-lang/rust/pull/131225#discussion_r1790109443.
Some Arc's can be misplaced with Lrc's, sorry.
https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/enable.20more.20clippy.20lints.20for.20compiler.20.28and.5Cor.20std.29
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Much like the previous commit.
I think the removal of "the token" in each message is fine here. There
are many more error messages that mention tokens without saying "the
token" than those that do say it.
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"innermost", "outermost", "leftmost", and "rightmost" don't need hyphens
These are all standard dictionary words and don't require hyphenation.
-----
Encountered an instance of this in error messages and it bugged me, so I
figured I'd fix it across the entire codebase.
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These are all standard dictionary words and don't require hyphenation.
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"activating" it)
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Co-authored-by: Michael Goulet <michael@errs.io>
Co-authored-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
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Plus a tiny bit of reformatting.
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This lets us compare a `Token` with a `TokenKind`. It's used a lot, but
can be used even more, avoiding the need for some `.kind` uses.
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The previous commit updated `rustfmt.toml` appropriately. This commit is
the outcome of running `x fmt --all` with the new formatting options.
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`missing_fragment_specifier` has been a future compatibility warning
since 2017. Uplifting it to an unconditional hard error was attempted in
2020, but eventually reverted due to fallout.
Make it an error only in edition >= 2024, leaving the lint for older
editions. This change will make it easier to support more macro syntax
that relies on usage of `$`.
Fixes <https://github.com/rust-lang/rust/issues/40107>
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[`macro_metavar_expr_concat`] Add support for literals
Adds support for things like `${concat($variable, 123)}` or `${concat("hello", "_world")}` .
cc #124225
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The number of source code bytes can't exceed a `u32`'s range, so a token
position also can't. This reduces the size of `Parser` and
`LazyAttrTokenStreamImpl` by eight bytes each.
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Merge `PatParam`/`PatWithOr`, and `Expr`/`Expr2021`, for a few reasons.
- It's conceptually nice, because the two pattern kinds and the two
expression kinds are very similar.
- With expressions in particular, there are several places where both
expression kinds get the same treatment.
- It removes one unreachable match arm.
- Most importantly, for #124141 I will need to introduce a new type
`MetaVarKind` that is very similar to `NonterminalKind`, but records a
couple of extra fields for expression metavars. It's nicer to have a
single `MetaVarKind::Expr` expression variant to hold those extra
fields instead of duplicating them across two variants
`MetaVarKind::{Expr,Expr2021}`. And then it makes sense for patterns
to be treated the same way, and for `NonterminalKind` to also be
treated the same way.
I also clarified the comments, because I have long found them a little
hard to understand.
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So we can omit the `token::` qualifier, which gives more space to some
cramped code.
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Make edition dependent `:expr` macro fragment act like the edition-dependent `:pat` fragment does
Parse the `:expr` fragment as `:expr_2021` in editions <=2021, and as `:expr` in edition 2024. This is similar to how we parse `:pat` as `:pat_param` in edition <=2018 and `:pat_with_or` in >=2021, and means we can get rid of a span dependency from `nonterminal_may_begin_with`.
Specifically, this fixes a theoretical regression since the `expr_2021` macro fragment previously would allow `const {}` if the *caller* is edition 2024. This is inconsistent with the way that the `pat` macro fragment was upgraded, and also leads to surprising behavior when a macro *caller* crate upgrades to edtion 2024, since they may have parsing changes that they never asked for (with no way of opting out of it).
This PR also allows using `expr_2021` in all editions. Why was this was disallowed in the first place? It's purely additive, and also it's still feature gated?
r? ```@fmease``` ```@eholk``` cc ```@vincenzopalazzo```
cc #123865
Tracking:
- https://github.com/rust-lang/rust/issues/123742
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Most modules have such a blank line, but some don't. Inserting the blank
line makes it clearer that the `//!` comments are describing the entire
module, rather than the `use` declaration(s) that immediately follows.
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This paves the way for tracking more state (e.g. error tainting) in the diagnostic context handle
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rustc_span: Add conveniences for working with span formats
This is the refactoring part of https://github.com/rust-lang/rust/pull/125017.
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cleanup dependence of `ExtCtxt` in transcribe when macro expansion
part of #125356
We can remove `transcribe`’s dependence on `ExtCtxt` to facilitate subsequent work (such as moving macro expansion into the incremental compilation system)
r? ```@petrochenkov```
Thanks for the reviewing!
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Tweak `Spacing` use
Some clean-up precursors to #125174.
r? ``@petrochenkov``
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- Name the colon span as `colon_span` to distinguish it from the other
`span` local variable.
- Just use basic pattern matching, which is easier to read than `map_or`.
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