3979: fix missing match arm false positive for enum with no variants r=flodiebold a=JoshMcguigan
fixes#3974
Co-authored-by: Josh Mcguigan <joshmcg88@gmail.com>
3990: Switch to Chalk recursive solver r=matklad a=flodiebold
Before:
```
Expressions of unknown type: 5526 (3%)
Expressions of partially unknown type: 5415 (3%)
```
After:
```
Expressions of unknown type: 4600 (2%)
Expressions of partially unknown type: 4645 (2%)
```
On the other hand,
```
'./target/release/rust-analyzer analysis-stats -q . # old solver' ran
1.24 ± 0.04 times faster than 'rust-analyzer analysis-stats -q . # new solver'
```
I think part of this just comes from the fact that we're inferring more types now; but apart from that, it should be possible to improve the performance a bunch, and I'll make looking into that a priority.
Co-authored-by: Florian Diebold <flodiebold@gmail.com>
3966: Add support for bounds on associated types in trait definitions r=matklad a=flodiebold
E.g.
```rust
trait Trait {
type Item: SomeOtherTrait;
}
```
Note that these don't simply desugar to where clauses; as I understand it, where clauses have to be proved by the *user* of the trait, but these bounds are proved by the *implementor*. (Also, where clauses on associated types are unstable.)
(Another one from my recursive solver branch...)
3968: Remove format from syntax_bridge hot path r=matklad a=edwin0cheng
Although only around 1% speed up by running:
```
Measure-Command {start-process .\target\release\rust-analyzer "analysis-stats -q ." -NoNewWindow -wait}
```
Co-authored-by: Florian Diebold <flodiebold@gmail.com>
Co-authored-by: Edwin Cheng <edwin0cheng@gmail.com>
3964: Nicer Chalk debug logs r=matklad a=flodiebold
I'm looking at a lot of Chalk debug logs at the moment, so here's a few changes to make them slightly nicer...
3965: Implement inline associated type bounds r=matklad a=flodiebold
Like `Iterator<Item: SomeTrait>`.
This is an unstable feature, but it's used in the standard library e.g. in the definition of Flatten, so we can't get away with not implementing it :)
(This is cherry-picked from my recursive solver branch, where it works better, but I did manage to write a test that works with the current Chalk solver as well...)
3967: Handle `Self::Type` in trait definitions when referring to own associated type r=matklad a=flodiebold
It was implemented for other generic parameters for the trait, but not for `Self`.
(Last one off my recursive solver branch 😄 )
Co-authored-by: Florian Diebold <flodiebold@gmail.com>
3969: Change add_function assist to use todo!() instead of unimplemented!() r=matklad a=TimoFreiberg
In the spirit of #3935
Co-authored-by: Timo Freiberg <timo.freiberg@gmail.com>
3971: add diagnostics subcommand to rust-analyzer CLI r=JoshMcguigan a=JoshMcguigan
This PR adds a `diagnostics` subcommand to the rust-analyzer CLI. The intent is to detect all diagnostics on a workspace. It returns a non-zero status code if any error diagnostics are detected. Ideally I'd like to run this in CI against the rust analyzer project as a guard against false positives.
```
$ cargo run --release --bin rust-analyzer -- diagnostics .
```
Questions for reviewers:
1. Is this the proper way to get all diagnostics for a workspace? It seems there are at least a few ways this can be done, and I'm not sure if this is the most appropriate mechanism to do this.
2. It currently prints out the relative file path as it is collecting diagnostics, but it doesn't print the crate name. Since the file name is relative to the crate there can be repeated names, so it would be nice to print some identifier for the crate as well, but it wasn't clear to me how best to accomplish this.
Co-authored-by: Josh Mcguigan <joshmcg88@gmail.com>
3961: Fix double comma when merge imports on second line r=edwin0cheng a=IceSentry
This fixes the bug when merging imports from the second line when it already has a comma it would previously insert a comma.
There's probably a better way to check for a COMMA.
This also ends up with a weird indentation, but rust-fmt can easily deal with it so I'm not sure how to resolve that.
Closes#3832
Co-authored-by: IceSentry <c.giguere42@gmail.com>
3960: ellipsis in tuple patterns r=JoshMcguigan a=JoshMcguigan
This PR lowers ellipsis in tuple patterns. It fixes a bug in the way ellipsis were previously lowered (by replacing the ellipsis with a single `Pat::Wild` no matter how many items the `..` was taking the place of).
It also uses this new information to properly handle `..` in tuple struct patterns when perform match statement exhaustiveness checks.
While this PR provides the building blocks for match statement exhaustiveness checks for tuples, there are some additional challenges there, so that is still unimplemented (unlike tuple structs).
Co-authored-by: Josh Mcguigan <joshmcg88@gmail.com>
E.g.
```
trait Trait {
type Item: SomeOtherTrait;
}
```
Note that these don't simply desugar to where clauses; as I understand it, where
clauses have to be proved by the *user* of the trait, but these bounds are proved
by the *implementor*. (Also, where clauses on associated types are unstable.)
Like `Iterator<Item: SomeTrait>`.
This is an unstable feature, but it's used in the standard library e.g. in the
definition of Flatten, so we can't get away with not implementing it :)
This fixes the a bug when merging imports from the second line when it already has a comma it would previously insert a comma.
There's probably a better way to check for a COMMA.
This also ends up with a weird indentation, but rust-fmt can easily deal with it so I'm not sure how to resolve that.
Closes#3832
3938: fix missing match arm false positive r=flodiebold a=JoshMcguigan
This fixes#3932 by skipping the missing match arm diagnostic in the case any of the match arms don't type check properly against the match expression.
I think this is the appropriate behavior for this diagnostic, since `is_useful` relies on all match arms being well formed, and the case of a malformed match arm should probably be handled by a different diagnostic.
Co-authored-by: Josh Mcguigan <joshmcg88@gmail.com>
