mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-01 03:03:40 +00:00
6970cf5a23
Print associated types on opaque `impl Trait` types This PR generalizes #91021, printing associated types for all opaque `impl Trait` types instead of just special-casing for future. before: ``` error[E0271]: type mismatch resolving `<impl Iterator as Iterator>::Item == u32` ``` after: ``` error[E0271]: type mismatch resolving `<impl Iterator<Item = usize> as Iterator>::Item == u32` ``` --- Questions: 1. I'm kinda lost in binders hell with this one. Is all of the `rebind`ing necessary? 2. Is there a map collection type that will give me a stable iteration order? Doesn't seem like TraitRef is Ord, so I can't just sort later.. 3. I removed the logic that suppresses printing generator projection types. It creates outputs like this [gist](https://gist.github.com/compiler-errors/d6f12fb30079feb1ad1d5f1ab39a3a8d). Should I put that back? 4. I also added spaces between traits, `impl A+B` -> `impl A + B`. I quite like this change, but is there a good reason to keep it like that? r? ````@estebank```` |
||
|---|---|---|
| .. | ||
| benches | ||
| src | ||
| Cargo.toml | ||
| README.md | ||
For more information about how rustc works, see the rustc dev guide.