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fix: Wrong `Sized` predicate for `generic_predicates_for_param`
I found this gathers wrong `Self: Sized` bound while implementing object safety, though I couldn't find proper test for this.
If we call `generic_predicates_for_param` to `Bar` in the following code;
```rust
trait Foo<T: ?Sized> {}
trait Bar<T: Foo<Self> + ?Sized> {}
```
it returns `T: Sized` and `Self: Sized` bound, because normaly, the `?Sized` bound applied properly in L1059 with;
https://github.com/rust-lang/rust-analyzer/blob/3723e5910c14f0ffbd13de474b8a8fcc74db04ce/crates/hir-ty/src/lower.rs#L1035-L1061
But we filter them before it is lowered with that function here;
https://github.com/rust-lang/rust-analyzer/blob/3723e5910c14f0ffbd13de474b8a8fcc74db04ce/crates/hir-ty/src/lower.rs#L1540-L1586
So, the `?Sized` bounded params are not gathered into `ctx.unsized_types` and thus we are applying them implicit `Sized` bound here;
https://github.com/rust-lang/rust-analyzer/blob/3723e5910c14f0ffbd13de474b8a8fcc74db04ce/crates/hir-ty/src/lower.rs#L1591-L1602
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fix: Add workspace level config to ratoml
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Remove the ability to configure the user config path
Being able to do this makes little sense as this is effectively a cyclic dependency (and we do not want to fixpoint this really).
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fix: Fix panics for semantic highlighting at startup
Without this we might try to process semantic highlighting requests before the database has entries for the given file resulting in a panic. There is no work to be done either way so delay this like we do with other request handlers.
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internal: ServerStatusParams should consider 'prime caches' in quiescent status
Priming caches is a performance win, but it takes a lock on the salsa database and prevents rust-analyzer from responding to e.g. go-to-def requests.
This causes confusion for users, who see the spinner next to rust-analyzer in the VS Code footer stop, so they start attempting to navigate their code.
Instead, set the `quiescent` status in LSP to false during cache priming, so the VS Code spinner persists until we can respond to any LSP request.
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Priming caches is a performance win, but it takes a lock on the salsa
database and prevents rust-analyzer from responding to e.g. go-to-def
requests.
This causes confusion for users, who see the spinner next to
rust-analyzer in the VS Code footer stop, so they start attempting to
navigate their code.
Instead, set the `quiescent` status in LSP to false during cache
priming, so the VS Code spinner persists until we can respond to any
LSP request.
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fix: Panic when a TAIT exists in a RPIT
Fixes #17921
When there is a TAIT inside of a RPIT like;
```rust
trait Foo {}
type Bar = impl Foo;
fn foo<A>() -> impl Future<Output = Bar> { .. }
```
while inferencing `fn foo`, `insert_inference_vars_for_impl_trait` tries to substitute impl trait bounds of `Bar`, i.e. `Implemented(Foo)` with RPITs `placeholders`, and this causes panic
https://github.com/rust-lang/rust-analyzer/blob/fa003262474185fd62168379500fe906b331824b/crates/hir-ty/src/infer.rs#L903-L905
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minor: Improve documentation for `InvocationStrategy`
cc https://github.com/rust-lang/rust-analyzer/pull/17888
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fix: keep comments in convert_while_to_loop
Fix #17869.
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chore(config): remove `invocationLocation` in favor of `invocationStrategy`
These flags were added to help rust-analyzer integrate with repos requiring non-Cargo invocations. The consensus is that having two independent settings are no longer needed. This change removes `invocationLocation` in favor of `invocationStrategy` and changes the internal representation of `InvocationStrategy::Once` to hold the workspace root.
Closes #17848.
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These flags were added to help rust-analyzer integrate with repos
requiring non-Cargo invocations. The consensus is that having two
independent settings are no longer needed. This change removes
`invocationLocation` in favor of `invocationStrategy` and changes
the internal representation of `InvocationStrategy::Once` to hold
the workspace root.
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Include generics when lowering extern type
Fixes #17767
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feat: Make rust-analyzer work partially when offline
Helps out with https://github.com/rust-lang/rust-analyzer/issues/12499 a bit
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fix: Wrong BoundVar index when lowering impl trait parameter of parent generics
Fixes #17711
From the following test code;
```rust
//- minicore: deref
use core::ops::Deref;
struct Struct<'a, T>(&'a T);
trait Trait {}
impl<'a, T: Deref<Target = impl Trait>> Struct<'a, T> {
fn foo(&self) -> &Self { self }
fn bar(&self) {
let _ = self.foo();
}
}
```
when we call `register_obligations_for_call` for `let _ = self.foo();`,
https://github.com/rust-lang/rust-analyzer/blob/07659783fdfd4ec0a0bffa93017e33e31e567e42/crates/hir-ty/src/infer/expr.rs#L1939-L1952
we are querying `generic_predicates` and it has `T: Deref<Target = impl Trait>` predicate from the parent `impl Struct`;
https://github.com/rust-lang/rust-analyzer/blob/07659783fdfd4ec0a0bffa93017e33e31e567e42/crates/hir-ty/src/lower.rs#L375-L399
but as we can see above, lowering `TypeRef = impl Trait` doesn't take into account the parent generic parameters, so the `BoundVar` index here is `0`, as `fn foo` has no generic args other than parent's,
But this `BoundVar` is pointing at `'a` in `<'a, T: Deref<Target = impl Trait>>`.
So, in the first code reference `register_obligations_for_call`'s L:1948 - `.substitute(Interner, parameters)`, we are substituting `'a` with `Ty`, not `Lifetime` and this makes panic inside the chalk.
This PR fixes this wrong `BoundVar` index in such cases
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Pin `rowan` to `0.15.15`
To prevent #17914, I think that it would be safer pinning this before we fix it correctly
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Remove rust-analyzer.workspace.discoverProjectRunner
The functionality for this vscode config option was removed in #17395, so it doesn't do anything anymore.
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Add scip/lsif flag to exclude vendored libaries
#17809 changed StaticIndex to include vendored libraries. This PR adds a flag to disable that behavior.
At work, our monorepo has too many rust targets to index all at once, so we split them up into several shards. Since all of our libraries are vendored, if rust-analyzer includes them, sharding no longer has much benefit, because every shard will have to index the entire transitive dependency graphs of all of its targets. We get around the issue presented in #17809 because some other shard will index the libraries directly.
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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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Implement lifetime inferring
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Allow flycheck process to exit gracefully
Assuming it isn't cancelled. Closes #17902.
The only place CommandHandle::join() is used is when the flycheck command
finishes, so this commit changes the behavior of the method itself.
The only reason I can see for the existing behavior is if the command is somehow holding onto a build lock longer than it should, this would force it to be released. But it would be a pretty heavy-handed way to solve that issue. I'm not aware of this occurring in practice.
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Test for word boundary in `FindUsages`
This speeds up short identifiers search significantly, while unlikely to have an effect on long identifiers (the analysis takes much longer than some character comparison).
Tested by finding all references to `eq()` (from `PartialEq`) in the rust-analyzer repo. Total time went down from 100s to 10s (a 10x reduction!).
Feel free to close this if you consider this a non-issue, as most short identifiers are local.
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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 speeds up short identifiers search significantly, while unlikely to have an effect on long identifiers (the analysis takes much longer than some character comparison).
Tested by finding all references to `eq()` (from `PartialEq`) in the rust-analyzer repo. Total time went down from 100s to 10s (a 10x reduction!).
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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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Assuming it isn't cancelled. Closes #17902.
The only place CommandHandle::join is used is when the flycheck command
finishes, so this commit changes the behavior of the method itself.
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