Ignore own item bounds in parent alias types in `for_each_item_bound`
Fixes#120912
I want to get a vibe check on this approach, which is very obviously a hack, but I believe something that is forwards-compatible with a more thorough solution and "good enough for now".
The problem here is that for a really deep rigid associated type, we are now repeatedly considering unrelated item bounds from the parent alias types, meaning we're doing a *lot* of extra work in the MIR inliner for deeply substituted rigid projections.
This feels intimately related to #107614. In that PR, we split *supertrait* bounds (bound which share the same `Self` type as the predicate which is being elaborated) and *implied* bounds (anything that is implied by elaborating the predicate).
The problem here is related to the fact that we don't maintain the split between these two for `item_bounds`. If we did, then when recursing into a parent alias type, we'd want to consider only the bounds that are given by [`PredicateFilter::All`](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_hir_analysis/astconv/enum.PredicateFilter.html#variant.SelfOnly) **except** those given by [`PredicateFilter::SelfOnly`](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_hir_analysis/astconv/enum.PredicateFilter.html#variant.SelfOnly).
Add completions to show only traits in trait `impl` statement
This is prerequisite PR for adding the assist mentioned in #12500
P.S: If wanted, I will add the implementation of the assist in this PR as well.
Activate on top level `Cargo.toml` and `rust-project.json` files
I believe there is an issue with how rust-analyzer is activated from within a VS Code project.
IIUC, the intent is that when you open a rust project with a top level `Cargo.toml`, then rust-analyzer should just start right up due to a VS Code activation event. This is not currently the case. i.e. run something like `cargo new ~/Desktop/hithere`, then open that folder in VS Code:
https://github.com/rust-lang/rust-analyzer/assets/19150088/1608b985-fd88-4174-a22a-5b3dd0fad84b
It is not until you actually open a Rust file that the extension starts up.
It looks like this was introduced in https://github.com/rust-lang/rust-analyzer/pull/10442. I do agree that recursive searching with `**/` is likely overkill, but I'm not sure `*/Cargo.toml` is working as expected in this comment (https://github.com/rust-lang/rust-analyzer/pull/10442#issuecomment-932967421):
> For some reason, */Cargo.toml works for both Cargo.toml in the project root and in a subdirectory (but not two levels deep).
That does not seem to be the case for me. I even went into VS Code itself and added some fake tests for `glob.match()` (which is eventually what gets used for this) and `*/Cargo.toml` doesn't seem to match a top level `Cargo.toml` (and I think that makes sense).
<img width="1087" alt="Screenshot 2024-02-12 at 6 07 08 PM" src="https://github.com/rust-lang/rust-analyzer/assets/19150088/510b0aaa-ac66-48b1-a9e2-a3bdfc237c48">
Lastly, the VS Code search filtering uses the same glob patterns, and it also doesn't match with `*/Cargo.toml`:
https://github.com/rust-lang/rust-analyzer/assets/19150088/4973f5e7-270d-489a-8db4-37469ffe12df
---
If you want both top level `Cargo.toml`s and 1-level-deep `Cargo.toml`s to be detected by VS Code's activation events, then I think we need to lay both of those conditions out explicitly, which I've done in this PR. That does fix the problem for me.
https://github.com/rust-lang/rust-analyzer/assets/19150088/bfcb1223-c45c-479a-9ea4-4be3f36e6838
fix: Validate literals in proc-macro-srv FreeFunctions::literal_from_str
cc https://github.com/rust-lang/rust-analyzer/pull/16446
meant to only get rid of some string allocs but then I noticed we can just implement this with the bare lexer.
Implement `literal_from_str` for proc macro server
Closes#16233
Todos and unanswered questions:
- [x] Is this the correct approach? Can both the legacy and `rust_analyzer_span` servers depend on the `syntax` crate?
- [ ] How should we handle suffixes for string literals? It doesn't seem like `rust-analyzer` preservers suffix information after parsing.
- [x] Why are the `expect` tests failing? Specifically `test_fn_like_macro_clone_literals`
Implement sys/thread for UEFI
Since UEFI has no concept of threads, most of this module can be ignored. However, implementing parts that make sense.
- Implement sleep
- Implement available_parallelism
Merge `impl_polarity` and `impl_trait_ref` queries
Hopefully this is perf neutral. I want to finish https://github.com/rust-lang/rust/pull/120835 and stop using the HIR in `coherent_trait`, which should then give us a perf improvement.
pattern_analysis: track usefulness without interior mutability
Because of or-patterns, exhaustiveness needs to be able to lint if a sub-pattern is redundant, e.g. in `Some(_) | Some(true)`. So far the only sane solution I had found was interior mutability. This is a bit of an abstraction leak, and would become a footgun if we ever reused the same `DeconstructedPat`. This PR replaces interior mutability with an address-indexed hashmap, which is logically equivalent.
fix: Fix target layout fetching
https://github.com/rust-lang/rust-analyzer/pull/16537 broke this, as `cargo rustc` cannot run against a virtual workspace, so it will always fail in such projects (like rust-analyzer itself). This brings back the plain rustc fallback,
Rollup of 11 pull requests
Successful merges:
- #120765 (Reorder diagnostics API)
- #120833 (More internal emit diagnostics cleanups)
- #120899 (Gracefully handle non-WF alias in `assemble_alias_bound_candidates_recur`)
- #120917 (Remove a bunch of dead parameters in functions)
- #120928 (Add test for recently fixed issue)
- #120933 (check_consts: fix duplicate errors, make importance consistent)
- #120936 (improve `btree_cursors` functions documentation)
- #120944 (Check that the ABI of the instance we are inlining is correct)
- #120956 (Clean inlined type alias with correct param-env)
- #120962 (Add myself to library/std review)
- #120972 (fix ICE for deref coercions with type errors)
r? `@ghost`
`@rustbot` modify labels: rollup
fix ICE for deref coercions with type errors
Follow-up to https://github.com/rust-lang/rust/pull/120895, where I made types with errors go through the full coercion code, which is necessary if we want to build MIR for bodies with errors (https://github.com/rust-lang/rust/pull/120550).
The code for coercing `&T` to `&U` currently assumes that autoderef for `&T` will succeed for at least two steps (`&T` and `T`):
b17491c8f6/compiler/rustc_hir_typeck/src/coercion.rs (L339-L464)
But for types with errors, we previously only returned the no-op autoderef step (`&{type error}` -> `&{type error}`) and then stopped early. This PR changes autoderef for types with errors to still go through the built-in derefs (e.g. `&&{type error}` -> `&{type error}` -> `{type error}`) and only stop early when it would have to go looking for `Deref` trait impls.
fixes https://github.com/rust-lang/rust/issues/120945
r? ``@compiler-errors`` or compiler
Clean inlined type alias with correct param-env
We were cleaning the `hir::Ty` of a type alias item in the param-env of the item that *references* the type alias, and not the alias's own param-env.
Fixes#120954
Check that the ABI of the instance we are inlining is correct
When computing the `CallSite` in the mir inliner, double check that the instance of the function that we are inlining is compatible with the signature from the trait definition that we acquire from the MIR.
Fixes#120940
r? ``@oli-obk`` or ``@cjgillot``
improve `btree_cursors` functions documentation
As suggested by ``@Amanieu`` (and others) in #107540 (https://github.com/rust-lang/rust/issues/107540#issuecomment-1937760547)
Improvements:
- Document exact behavior of `{upper/lower}_bound{,_mut}` with each of the three `Bound` types using unambigous words `{greatest,greater,smallest,smaller,before,after}`.
- Added another doc-example for the `Bound::Unbounded` for each of the methods
- Changed doc-example to use From<[T; N]> rather than lots of `insert()`s which requires a mutable map which clutters the example when `mut` may not be required for the method (such as for `{upper,lower}_bound`.
- Removed `# Panics` section from `insert_{before,after}` methods since they were changed to return an error instead a while ago.
- Reworded some phrases to be more consistent with the more regular `BTreeMap` methods such as calling entries "key-value" rather than "element"s.
check_consts: fix duplicate errors, make importance consistent
This is stuff I noticed while working on https://github.com/rust-lang/rust/pull/120932, but it's orthogonal to that PR.
r? ``@oli-obk``
Remove a bunch of dead parameters in functions
Found this kind of issue when working on https://github.com/rust-lang/rust/pull/119650
I wrote a trivial toy lint and manual review to find these.
Gracefully handle non-WF alias in `assemble_alias_bound_candidates_recur`
See explanation in test. I think it's fine to delay a bug here -- I don't believe we ever construct a non-wf alias on the good path? If so, then we can just remove the delay.
Fixes#120891
r? lcnr
