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Add ide-assist: generate_ref_impl #20334

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Add a trait impl for reference.

trait $0Foo {
    fn foo(&mut self, n: i32) -> i32;
}

->

trait Foo {
    fn foo(&mut self, n: i32) -> i32;
}

impl<T: Foo + ?Sized> Foo for &mut T {
    fn foo(&mut self, n: i32) -> i32 {
        (**self).foo(n)
    }
}

@rustbot rustbot added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jul 29, 2025
@A4-Tacks
Add ide-assist: generate_ref_impl
660c9a2 
Add a trait impl for reference.

```rust
trait $0Foo {
    fn foo(&mut self, n: i32) -> i32;
}
```
->
```rust
trait Foo {
    fn foo(&mut self, n: i32) -> i32;
}

impl<T: Foo + ?Sized> Foo for &mut T {
    fn foo(&mut self, n: i32) -> i32 {
        (**self).foo(n)
    }
}
@A4-Tacks A4-Tacks force-pushed the gen-ref-trait-impl branch from 4802514 to 660c9a2 Compare July 29, 2025 08:21
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