use precompiled rustc for non-dist builders
Makes non-dist builders to use precompiled CI rustc by default if they are available for the target triple.
As we are going to make `rust.download-rustc=if-unchanged` default option with https://github.com/rust-lang/rust/pull/119899, we need to make sure `if-unchanged` logic never breaks and works as expected.
As an addition, this will significantly improve the build times on CI when there's no change on the compiler.
blocker for #119899
try-job: x86_64-gnu-nopt
try-job: aarch64-apple
before, when formatting struct constructor for `struct S(usize, usize)` it would format as:
extern "rust-call" S(usize, usize) -> S
but after this change, we'll format as:
fn S(usize, usize) -> S
Use external stack in borrowck DFS
Because damnit, it can crash r-a. Why do people make this stupid DFSes anyway (I get it, it's easier until it blows).
Fixes#18223 (who thought DFS will be the problem).
internal: add json `tracing` Layer for profiling startup
On `buck2/integrations/rust-project`, this results in the following being printed:
```json
{"name":"discover_command","elapsed_ms":18703}
{"name":"parallel_prime_caches","elapsed_ms":0}
{"name":"vfs_load","elapsed_ms":5895}
{"name":"vfs_load","elapsed_ms":547}
{"name":"parallel_prime_caches","elapsed_ms":23}
{"name":"parallel_prime_caches","elapsed_ms":84}
{"name":"parallel_prime_caches","elapsed_ms":5819}
```
remove blank issue template
r? `@Noratrieb`
So there are currently two blank issue templates. One called "Blank Issue" and one called "Blank issue". Wildly different, of course. It seems that one is auto generated by GitHub, while the other one has an explicit template for it. This removes the explicit one so there's only one "Blank [iI]ssue" in the list. Unfortunately, the only way to test if it works is merging this and finding out, but it seems obvious that it would work.
add caching to most type folders, rm region uniquification
Fixes the new minimization of the hang in nalgebra and nalgebra itself :3
this is a bit iffy, especially the cache in `TypeRelating`. I believe all the caches are correct, but it definitely adds some non-local complexity in places. The first commit removes region uniquification, reintroducing the ICE from https://github.com/rust-lang/trait-system-refactor-initiative/issues/27. This does not affect coherence and I would like to fix this by introducing OR-region constraints
r? `@compiler-errors`
When providing a custom rustfmt command, join it with the project
root instead of the workspace root. This fixes rust-analyzer
getting the wrong invocation path in projects containing subprojects.
This makes the behaviour consistent with how a custom path provided
in rust-analyzer.procMacro.server behaves already.
Resolves issue #18222
Add `[Option<T>; N]::transpose`
This PR as a new unstable libs API, `[Option<T>; N]::transpose`, which permits going from `[Option<T>; N]` to `Option<[T; N]>`.
This new API doesn't have an ACP as it was directly asked by T-libs-api in https://github.com/rust-lang/rust/issues/97601#issuecomment-2372109119:
> [..] but it'd be trivial to provide a helper method `.transpose()` that turns array-of-Option into Option-of-array (**and we think that method should exist**; it already does for array-of-MaybeUninit).
r? libs
Add `field@` and `variant@` doc-link disambiguators
I'm not sure if this is big enough to need an fcp or not, but this is something I found missing when trying to refer to a field in macro-generated docs, not knowing if a method might be defined as well. Obviously, there are definitely other uses.
In the case where it's not disambiguated, methods (and I suppose other associated items in the value namespace) still take priority, which `@jyn514` said was an oversight but I think is probably the desired behavior 99% of the time anyway - shadowing a field with an accessor method is a very common pattern. If fields and methods with the same name started conflicting, it would be a breaking change. Though, to quote them:
> jyn: maybe you can break this only if both [the method and the field] are public
> jyn: rustc has some future-incompat warning level
> jyn: that gets through -A warnings and --cap-lints from cargo
That'd be out of scope of this PR, though.
Fixes#80283
internal: remove `Default` from OpQueue
`@Wilfred` and I were talking about `OpQueue` and we identified one symptom of its (relative) weirdness is that `last_op_result` returns a `T::default()`; not `Option<&T>`, which means it's not possible to distinguish between "the `OpQueue` hasn't run yet" and "the OpQueue ran, but didn't produce a result". This branch fixes that.
fix: Fix resolution of label inside macro
When working on Something Else (TM) (I left a hint in the commits :P), I noticed to my surprise that labels inside macros are not resolved. This led to a discovery of *two* unrelated bugs, which are hereby fixed in two commits.
This fixes a bug where labels inside macros were not resolved, but more importantly this prepares us to a future where we have hygiene, and textual equivalence isn't enough to resolve identifiers.
internal: Send less data during `textDocument/completion` if possible
Similar to https://github.com/rust-lang/rust-analyzer/pull/15522, stops sending extra data during `textDocument/completion` if that data was set in the client completions resolve capabilities, and sends those only during `completionItem/resolve` requests.
Currently, rust-analyzer sends back all fields (including potentially huge docs) for every completion item which might get large.
Same as the other one, this PR aims to keep the changes minimal and does not remove extra computations for such fields — instead, it just filters them out before sending to the client.
The PR omits primitive, boolean and integer, types such as `deprecated`, `preselect`, `insertTextFormat`, `insertTextMode`, etc. AND `additionalTextEdits` — this one looks very dangerous to compute for each completion item (as the spec says we ought to if there's no corresponding resolve capabilities provided) due to the diff computations and the fact that this code had been in the resolution for some time.
It would be good to resolve this lazily too, please let me know if it's ok to do.
When tested with Zed which only defines `documentation` and `additionalTextEdits` in its client completion resolve capabilities, rust-analyzer starts to send almost 3 times less characters:
Request:
```json
{"jsonrpc":"2.0","id":104,"method":"textDocument/completion","params":{"textDocument":{"uri":"file:///Users/someonetoignore/work/rust-analyzer/crates/ide/src/inlay_hints.rs"},"position":{"line":90,"character":14},"context":{"triggerKind":1}}}
```
<img width="1338" alt="image" src="https://github.com/user-attachments/assets/104f19b5-7095-4fc1-b008-5d829623b2e2">
Before: 381944 characters
[before.json](https://github.com/user-attachments/files/17092385/before.json)
After: 140503 characters
[after.json](https://github.com/user-attachments/files/17092386/after.json)
After Zed's [patch](https://github.com/zed-industries/zed/pull/18212) to enable all resolving possible: 84452 characters
[after-after.json](https://github.com/user-attachments/files/17092755/after-after.json)
fix: Ambiguity with CamelCase diagnostic messages, align with rustc warnings
Fixed diagnostic messages so they say UpperCamelCase rather than CamelCase, as it is ambiguous.
Usually I'd call it PascalCase, but in the code base it is called UpperCamelCase so I left it with that naming choice.
`rustc` says `upper camel case` also when the case is wrong
```
warning: trait `testThing` should have an upper camel case name
--> src/main.rs:5:7
|
5 | trait testThing {
| ^^^^^^^^^ help: convert the identifier to upper camel case: `TestThing`
|
= note: `#[warn(non_camel_case_types)]` on by default
```
This is in line with the UPPER_SNAKE_CASE diagnostic messages.
546339a7be/crates/hir-ty/src/diagnostics/decl_check.rs (L60)546339a7be/crates/ide-diagnostics/src/handlers/incorrect_case.rs (L535)
