E.g. when there's a type mismatch on the return value of a function. To
fix this, we have to return the expected type as the type of the block
when there's a mismatch. That meant some IDE code that expected
otherwise had to be adapted, in particular the "add return type" assist.
For the "wrap in Ok/Some" quickfix, this sadly means it usually can't be applied
in all branches of an if expression at the same time anymore, because
there's a type mismatch for each branch that has the wrong type.
11740: Insert #[must_use] in generate_is_empty_from_len r=lnicola a=Walther
Inserts `#[must_use]` for the generated `is_empty` methods. I also added the `#[must_use]` for the `len()` methods in the documentation examples and tests for this generator while at it, to make sure they too encourage the use of the annotation.
From discussion in https://github.com/rust-analyzer/rust-analyzer/issues/11736 and https://github.com/rust-analyzer/rust-analyzer/pull/11738
Co-authored-by: Walther <veeti.haapsamo@gmail.com>
Adds a label / lifetime parameter to `ide_assists::handlers::extract_function::FlowKind::{Break, Continue}`, adds support for emitting labels to `syntax::ast::make::{expr_break, expr_continue}`, and implements the required machinery to let `extract_function` make use of them.
This does modify the external API of the `syntax` crate, but the changes there are simple, not used outside `ide_assists`, and, well, we should probably support emitting `break` and `continue` labels through `syntax` anyways, they're part of the language spec.
Closes#11413.
11662: fix: extract_module selection inside impl r=Veykril a=feniljain
Should close: #11508
From issue:
Concern 1: Seems to be fixed in latest `rust-analyzer` build
Concern 2 and 3: Should be fixed by this PR
Concern 4: Got fixed in #11472
Points to note:
- Here I have seperated use items and other items, this is becuase the new `impl` block which we will be creating cannot contain use items as immediate children. As they are the only one item that can be generated by our assist, so seperating them helps in handling their inclusion in new `impl` block inside new `module`
- There's also a new method added which helps in removing remaning left over indentation after removing `impl` or other `item`
Co-authored-by: vi_mi <fkjainco@gmail.com>
11598: feat: Parse destructuring assignment r=Veykril a=ChayimFriedman2
Part of #11532.
Lowering is not as easy and may not even be feasible right now as it requires generating identifiers: `(a, b) = (b, a)` is desugared into
```rust
{
let (<gensym_a>, <gensym_b>) = (b, a);
a = <gensym_a>;
b = <gensym_b>;
}
```
rustc uses hygiene to implement that, but we don't support hygiene yet.
However, I think parsing was the main problem as lowering will just affect type inference, and while `{unknown}` is not nice it's much better than a syntax error.
I'm still looking for the best way to do lowering, though.
Fixes#11454.
Co-authored-by: Chayim Refael Friedman <chayimfr@gmail.com>
- don't return the receiver type from method resolution; instead just
return the autorefs/autoderefs that happened and repeat them. This
ensures all the effects like trait obligations and whatever we learned
about type variables from derefing them are actually applied. Also, it
allows us to get rid of `decanonicalize_ty`, which was just wrong in
principle.
- Autoderef itself now directly works with an inference table. Sadly
this has the effect of making it harder to use as an iterator, often
requiring manual `while let` loops. (rustc works around this by using
inner mutability in the inference context, so that things like unifying
types don't require a unique reference.)
- We now record the adjustments (autoref/deref) for method receivers
and index expressions, which we didn't before.
- Removed the redundant crate parameter from method resolution, since
the trait_env contains the crate as well.
- in the HIR API, the methods now take a scope to determine the trait env.
`Type` carries a trait env, but I think that's probably a bad decision
because it's easy to create it with the wrong env, e.g. by using
`Adt::ty`. This mostly didn't matter so far because
`iterate_method_candidates` took a crate parameter and ignored
`self.krate`, but the trait env would still have been wrong in those
cases, which I think would give some wrong results in some edge cases.
Fixes#10058.
11531: fix: Make fill_match_arms assist handle doc(hidden) and non_exhaustive r=Veykril a=OleStrohm
Fixes#11499Fixes#11500
This keeps track of the relevant attributes and adds in a wildcard pat at the end of the match when necessary.
I decided to do them in the same PR since they both needed the ability to add a wildcard arm, and so their changes would overlap if done separately, but I'll split them up if that seems better.
This is my first PR to rust-analyzer, so all feedback is greatly appreciated!
Co-authored-by: Ole Strohm <strohm99@gmail.com>
11461: Extract struct from enum variant filters generics r=jo-goro a=jo-goro
Fixes#11452.
This PR updates extract_struct_from_enum_variant. Extracting a struct `A` form an enum like
```rust
enum X<'a, 'b> {
A { a: &'a () },
B { b: &'b () },
}
```
will now be correctly generated as
```rust
struct A<'a> { a: &'a () }
enum X<'a, 'b> {
A(A<'a>),
B { b: &'b () },
}
```
instead of the previous
```rust
struct A<'a, 'b>{ a: &'a () } // <- should not have 'b
enum X<'a, 'b> {
A(A<'a, 'b>),
B { b: &'b () },
}
```
This also works for generic type parameters and const generics.
Bounds are also copied, however I have not yet implemented a filter for unneeded bounds. Extracting `B` from the following enum
```rust
enum X<'a, 'b: 'a> {
A { a: &'a () },
B { b: &'b () },
}
```
will be generated as
```rust
struct B<'b: 'a> { b: &'b () } // <- should be `struct B<'b> { b: &'b () }`
enum X<'a, 'b: 'a> {
A { a: &'a () },
B(B<'b>),
}
```
Extracting bounds with where clauses is also still not implemented.
Co-authored-by: Jonas Goronczy <goronczy.jonas@gmail.com>
