Basically, we need to allow variables in the caller self type to unify with the
impl's declared self type. That requires some more contortions in the variable
handling. I'm looking forward to (hopefully) handling this in a cleaner way when
we switch to Chalk's types and unification code.
3309: Find cargo toml up the fs r=matklad a=not-much-io
Currently rust-analyzer will look for Cargo.toml in the root of the project and if failing that then go down the filesystem until root.
This unfortunately wouldn't work automatically with (what I imagine is) a fairly common project structure. As an example with multiple languages like:
```
js/
..
rust/
Cargo.toml
...
```
Added this small change so rust-analyzer would glance one level up if not found in root or down the filesystem.
## Why not go deeper?
Could be problematic with large project vendored dependencies etc.
## Why not add a Cargo.toml manual setting option?
Loosely related and a good idea, however the convenience of having this automated also is hard to pass up.
## Testing?
Build a binary with various logs and checked it in a project with such a structure:
```
[ERROR ra_project_model] find_cargo_toml()
[ERROR ra_project_model] find_cargo_toml_up_the_fs()
[ERROR ra_project_model] entities: ReadDir("/workspaces/my-project")
[ERROR ra_project_model] candidate: "/workspaces/my-project/rust/Cargo.toml", exists: true
```
## Edge Cases?
If you have multiple Cargo.toml files one level deeper AND not in the root, will get whatever comes first (order undefined), example:
```
crate1/
Cargo.toml
crate2/
Cargo.toml
... (no root Cargo.toml)
```
However this is quite unusual and wouldn't have worked before either. This is only resolvable via manually choosing.
Co-authored-by: nmio <kristo.koert@gmail.com>
E.g. for `&{ some_string() }` in a context where a `&str` is expected, we
reported a mismatch inside the block. The problem is that we're passing an
expectation of `str` down, but the expectation is more of a hint in this case.
There's a long comment in rustc about this, which I just copied.
Also, fix reported location for type mismatches in macros.
3366: Simpilfy original_range logic r=matklad a=edwin0cheng
This PR fixed another [bug](https://github.com/rust-analyzer/rust-analyzer/issues/3000#issuecomment-592474844) which incorrectly map the wrong range of `punct` in macro_call and simplify the logic a little bit by introducing an `ascend_call_token` function.
Co-authored-by: Edwin Cheng <edwin0cheng@gmail.com>
3359: Remove AnalysisHost::type_of r=matklad a=edwin0cheng
This PR remove ` AnalysisHost::type_of` (It is subsume by hover now) and use `Semantics::type_of_x` to infer the type inside `hover` directly.
And this also solved a bug : Right now hovering on a string literal inside a macro will show up a `&str` popup correctly. (Except if that involved builtin macro, e.g. `println`)
Co-authored-by: Edwin Cheng <edwin0cheng@gmail.com>
