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fix: Properly account for editions in names
This PR touches a lot of parts. But the main changes are changing `hir_expand::Name` to be raw edition-dependently and only when necessary (unrelated to how the user originally wrote the identifier), and changing `is_keyword()` and `is_raw_identifier()` to be edition-aware (this was done in #17896, but the FIXMEs were fixed here).
It is possible that I missed some cases, but most IDE parts should properly escape (or not escape) identifiers now.
The rules of thumb are:
- If we show the identifier to the user, its rawness should be determined by the edition of the edited crate. This is nice for IDE features, but really important for changes we insert to the source code.
- For tests, I chose `Edition::CURRENT` (so we only have to (maybe) update tests when an edition becomes stable, to avoid churn).
- For debugging tools (helper methods and logs), I used `Edition::LATEST`.
Reviewing notes:
This is a really big PR but most of it is mechanical translation. I changed `Name` displayers to require an edition, and followed the compiler errors. Most methods just propagate the edition requirement. The interesting cases are mostly in `ide-assists`, as sometimes the correct crate to fetch the edition from requires awareness (there may be two). `ide-completions` and `ide-diagnostics` were solved pretty easily by introducing an edition field to their context. `ide` contains many features, for most of them it was propagated to the top level function and there the edition was fetched based on the file.
I also fixed all FIXMEs from #17896. Some required introducing an edition parameter (usually not for many methods after the changes to `Name`), some were changed to a new method `is_any_identifier()` because they really want any possible keyword.
Fixes #17895.
Fixes #17774.
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This PR touches a lot of parts. But the main changes are changing
`hir_expand::Name` to be raw edition-dependently and only when necessary
(unrelated to how the user originally wrote the identifier),
and changing `is_keyword()` and `is_raw_identifier()` to be edition-aware
(this was done in #17896, but the FIXMEs were fixed here).
It is possible that I missed some cases, but most IDE parts should properly
escape (or not escape) identifiers now.
The rules of thumb are:
- If we show the identifier to the user, its rawness should be determined
by the edition of the edited crate. This is nice for IDE features,
but really important for changes we insert to the source code.
- For tests, I chose `Edition::CURRENT` (so we only have to (maybe) update
tests when an edition becomes stable, to avoid churn).
- For debugging tools (helper methods and logs), I used `Edition::LATEST`.
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internal: Replace once_cell with std's recently stabilized OnceCell/Lock and LazyCell/Lock
This doesn't get rid of the once_cell dependency, unfortunately, since we have dependencies that use it, but it's a nice to do cleanup. And when our deps will eventually get rid of once_cell we will get rid of it for free.
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This doesn't get rid of the once_cell dependency, unfortunately, since we have dependencies that use it, but it's a nice to do cleanup. And when our deps will eventually get rid of once_cell we will get rid of it for free.
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fix: Resolve included files to their calling modules in IDE layer
Fixes https://github.com/rust-lang/rust-analyzer/issues/17390 at the expense of reporting duplicate diagnostics for modules that have includes in them when both the calling and called file are included.
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`[package.repository.workspace] = true`
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With the lack of a README on the individually published library crates and the somewhat cryptic `ra_ap_` prefix it is hard to figure out where those crates belong to, so mentioning "rust-analyzer" feels like auseful hint there.
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`[package.description]` fields
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feat: Implement diagnostic for `await` outside of `async`
Closes #17781
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perf: Segregate syntax and semantic diagnostics
Closes #17731
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feat: Use spans for builtin and declarative macro expansion errors
This should generally improve some error reporting for macro expansion errors. Especially for `compile_error!` within proc-macros
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Allow macro expansions into `RestPat` in tuple args work as ellipsis like plain `RestPat`
Fixes #17292
Currently, Rust Analyzer lowers `ast::Pat::RestPat` into `Pat::Missing` in general cases on the following lines;
https://github.com/rust-lang/rust-analyzer/blob/ffbc5ad993d5cd2f3b8bcf9a511165470944ab91/crates/hir-def/src/body/lower.rs#L1359-L1367
And in some proper positions such as `TupleStruct(..)`, it is specially handed on the following lines;
https://github.com/rust-lang/rust-analyzer/blob/ffbc5ad993d5cd2f3b8bcf9a511165470944ab91/crates/hir-def/src/body/lower.rs#L1429-L1437
This behavior is reasonable because rustc does similar things in
https://github.com/rust-lang/rust/blob/62c068feeafd1f4abbf87243d69cf8862e4dd277/compiler/rustc_ast_lowering/src/pat.rs#L108-L111
and
https://github.com/rust-lang/rust/blob/62c068feeafd1f4abbf87243d69cf8862e4dd277/compiler/rustc_ast_lowering/src/pat.rs#L123-L142
But this sometimes works differently because Rust Analyzer expands macros while ast lowering;
https://github.com/rust-lang/rust-analyzer/blob/ffbc5ad993d5cd2f3b8bcf9a511165470944ab91/crates/hir-def/src/body/lower.rs#L1386-L1398
https://github.com/rust-lang/rust-analyzer/blob/ffbc5ad993d5cd2f3b8bcf9a511165470944ab91/crates/hir-def/src/body/lower.rs#L941-L963
but rustc uses expanded ast in the corresponding tuple-handling process, so it does not have macro patterns there.
https://github.com/rust-lang/rust/blob/62c068feeafd1f4abbf87243d69cf8862e4dd277/compiler/rustc_ast_lowering/src/pat.rs#L114
So, if a macro expansion in a tuple arg results in `..`, rustc permits it like plain `..` pattern, but Rust Analyzer rejects it.
This is the root cause of #17292 and this PR allows macros expanded into `..` in a tuple arg position work as ellipsis like that.
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internal: Make `CfgExpr` slimmer
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Clean up a few minor refs in `format!` macro, as it has a performance cost. Apparently the compiler is unable to inline `format!("{}", &variable)`, and does a run-time double-reference instead (format macro already does one level referencing). Inlining format args prevents accidental `&` misuse.
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feat: Add incorrect case diagnostics for enum variant fields and all variables/params
Updates the incorrect case diagnostic to check:
1. Fields of enum variants. Example:
```rust
enum Foo {
Variant { nonSnake: u8 }
}
```
2. All variable bindings, instead of just let bindings and certain match arm patters. Examples:
```rust
match 1 { nonSnake => () }
match 1 { nonSnake @ 1 => () }
match 1 { nonSnake1 @ nonSnake2 => () } // slightly cursed, but these both introduce new
// bindings that are bound to the same value.
const ONE: i32 = 1;
match 1 { nonSnake @ ONE } // ONE is ignored since it is not a binding
match Some(1) { Some(nonSnake) => () }
struct Foo { field: u8 }
match (Foo { field: 1 } ) {
Foo { field: nonSnake } => ();
}
struct Foo { nonSnake: u8 } // diagnostic here, at definition
match (Foo { nonSnake: 1 } ) { // no diagnostic here...
Foo { nonSnake } => (); // ...or here, since these are not where the name is introduced
}
for nonSnake in [] {}
struct Foo(u8);
for Foo(nonSnake) in [] {}
```
3. All parameter bindings, instead of just top-level binding identifiers. Examples:
```rust
fn func(nonSnake: u8) {} // worked before
struct Foo { field: u8 }
fn func(Foo { field: nonSnake }: Foo) {} // now get diagnostic for nonSnake
```
This is accomplished by changing the way binding identifier patterns are filtered:
- Previously, all binding idents were skipped, except a few classes of "good" binding locations that were checked.
- Now, all binding idents are checked, except field shorthands which are skipped.
Moving from a whitelist to a blacklist potentially makes the analysis more brittle:
If new pattern types are added in the future where ident pats don't introduce new names, then they may incorrectly create diagnostics.
But the benefit of the blacklist approach is simplicity: I think a whitelist approach would need to recursively visit patterns to collect renaming candidates?
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Trigger VSCode to rename after extract variable assist is applied
When the user applies the "Extract Variable" assist, the cursor is
positioned at the newly inserted variable. This commit adds a command
to the assist that triggers the rename action in VSCode. This way, the
user can quickly rename the variable after applying the assist.
Fixes part of: #17579
https://github.com/user-attachments/assets/4cf38740-ab22-4b94-b0f1-eddd51c26c29
I haven't yet looked at the module or function extraction assists yet.
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When the user applies the "Extract Variable" assist, the cursor is
positioned at the newly inserted variable. This commit adds a command
to the assist that triggers the rename action in VSCode. This way, the
user can quickly rename the variable after applying the assist.
Fixes part of: #17579
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plain `RestPat`
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Add an option to use "::" for the external crate prefix.
Fixes #11823 .
Hi I'm very new to rust-analyzer and not sure how the review process are. Can somebody take a look at this PR? thanks!
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internal: Cleanup proc-macro-srv some more
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already enforces this
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Quality of life improvements to term search
Basically two things:
- Allow optionally disabling "borrow checking" restrictions on term search code assists. Sometimes it is better to get invalid suggestions and fix borrow checking issues later...
- Remove explicit generics in generated expressions. I find it quite rare that one writes `None::<T>` instead of `None`.
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