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Rollup merge of #91097 - compiler-errors:spaces_in_impl_trait, r=estebank

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Add spaces in opaque `impl Trait` with more than one trait

`impl A+B` becomes `impl A + B`

r? `@estebank`
This commit is contained in:
Matthias Krüger 2021-11-21 09:55:15 +01:00 committed by GitHub
commit 3eb30b8e7f
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 20 additions and 20 deletions
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6
compiler/rustc_middle/src/ty/print/pretty.rs
View File

@ -688,7 +688,7 @@ pub trait PrettyPrinter<'tcx>:
}
p!(
write("{}", if first { " " } else { "+" }),
write("{}", if first { " " } else { " + " }),
print(trait_ref.print_only_trait_path())
);
@ -699,7 +699,7 @@ pub trait PrettyPrinter<'tcx>:
}
if is_future {
p!(write("{}Future", if first { " " } else { "+" }));
p!(write("{}Future", if first { " " } else { " + " }));
first = false;
if let Some(future_output_ty) = future_output_ty {
@ -712,7 +712,7 @@ pub trait PrettyPrinter<'tcx>:
}
if !is_sized {
p!(write("{}?Sized", if first { " " } else { "+" }));
p!(write("{}?Sized", if first { " " } else { " + " }));
} else if first {
p!(" Sized");
}

8
src/test/ui/associated-types/issue-87261.rs
View File

@ -83,17 +83,17 @@ fn main() {
//~^ ERROR type mismatch resolving `<impl DerivedTrait as Trait>::Associated == ()`
accepts_trait(returns_opaque_foo());
//~^ ERROR type mismatch resolving `<impl Trait+Foo as Trait>::Associated == ()`
//~^ ERROR type mismatch resolving `<impl Trait + Foo as Trait>::Associated == ()`
accepts_trait(returns_opaque_derived_foo());
//~^ ERROR type mismatch resolving `<impl DerivedTrait+Foo as Trait>::Associated == ()`
//~^ ERROR type mismatch resolving `<impl DerivedTrait + Foo as Trait>::Associated == ()`
accepts_generic_trait(returns_opaque_generic());
//~^ ERROR type mismatch resolving `<impl GenericTrait<()> as GenericTrait<()>>::Associated == ()`
accepts_generic_trait(returns_opaque_generic_foo());
//~^ ERROR type mismatch resolving `<impl GenericTrait<()>+Foo as GenericTrait<()>>::Associated == ()`
//~^ ERROR type mismatch resolving `<impl GenericTrait<()> + Foo as GenericTrait<()>>::Associated == ()`
accepts_generic_trait(returns_opaque_generic_duplicate());
//~^ ERROR type mismatch resolving `<impl GenericTrait<()>+GenericTrait<u8> as GenericTrait<()>>::Associated == ()`
//~^ ERROR type mismatch resolving `<impl GenericTrait<()> + GenericTrait<u8> as GenericTrait<()>>::Associated == ()`
}

24
src/test/ui/associated-types/issue-87261.stderr
View File

@ -160,7 +160,7 @@ help: consider constraining the associated type `<impl DerivedTrait as Trait>::A
LL | fn returns_opaque_derived() -> impl DerivedTrait<Associated = ()> + 'static {
| +++++++++++++++++
error[E0271]: type mismatch resolving `<impl Trait+Foo as Trait>::Associated == ()`
error[E0271]: type mismatch resolving `<impl Trait + Foo as Trait>::Associated == ()`
--> $DIR/issue-87261.rs:85:5
|
LL | fn returns_opaque_foo() -> impl Trait + Foo {
@ -170,18 +170,18 @@ LL | accepts_trait(returns_opaque_foo());
| ^^^^^^^^^^^^^ expected `()`, found associated type
|
= note: expected unit type `()`
found associated type `<impl Trait+Foo as Trait>::Associated`
found associated type `<impl Trait + Foo as Trait>::Associated`
note: required by a bound in `accepts_trait`
--> $DIR/issue-87261.rs:43:27
|
LL | fn accepts_trait<T: Trait<Associated = ()>>(_: T) {}
| ^^^^^^^^^^^^^^^ required by this bound in `accepts_trait`
help: consider constraining the associated type `<impl Trait+Foo as Trait>::Associated` to `()`
help: consider constraining the associated type `<impl Trait + Foo as Trait>::Associated` to `()`
|
LL | fn returns_opaque_foo() -> impl Trait<Associated = ()> + Foo {
| +++++++++++++++++
error[E0271]: type mismatch resolving `<impl DerivedTrait+Foo as Trait>::Associated == ()`
error[E0271]: type mismatch resolving `<impl DerivedTrait + Foo as Trait>::Associated == ()`
--> $DIR/issue-87261.rs:88:5
|
LL | fn returns_opaque_derived_foo() -> impl DerivedTrait + Foo {
@ -191,8 +191,8 @@ LL | accepts_trait(returns_opaque_derived_foo());
| ^^^^^^^^^^^^^ expected `()`, found associated type
|
= note: expected unit type `()`
found associated type `<impl DerivedTrait+Foo as Trait>::Associated`
= help: consider constraining the associated type `<impl DerivedTrait+Foo as Trait>::Associated` to `()`
found associated type `<impl DerivedTrait + Foo as Trait>::Associated`
= help: consider constraining the associated type `<impl DerivedTrait + Foo as Trait>::Associated` to `()`
= note: for more information, visit https://doc.rust-lang.org/book/ch19-03-advanced-traits.html
note: required by a bound in `accepts_trait`
--> $DIR/issue-87261.rs:43:27
@ -221,7 +221,7 @@ help: consider constraining the associated type `<impl GenericTrait<()> as Gener
LL | fn returns_opaque_generic() -> impl GenericTrait<(), Associated = ()> + 'static {
| +++++++++++++++++
error[E0271]: type mismatch resolving `<impl GenericTrait<()>+Foo as GenericTrait<()>>::Associated == ()`
error[E0271]: type mismatch resolving `<impl GenericTrait<()> + Foo as GenericTrait<()>>::Associated == ()`
--> $DIR/issue-87261.rs:94:5
|
LL | fn returns_opaque_generic_foo() -> impl GenericTrait<()> + Foo {
@ -231,18 +231,18 @@ LL | accepts_generic_trait(returns_opaque_generic_foo());
| ^^^^^^^^^^^^^^^^^^^^^ expected `()`, found associated type
|
= note: expected unit type `()`
found associated type `<impl GenericTrait<()>+Foo as GenericTrait<()>>::Associated`
found associated type `<impl GenericTrait<()> + Foo as GenericTrait<()>>::Associated`
note: required by a bound in `accepts_generic_trait`
--> $DIR/issue-87261.rs:44:46
|
LL | fn accepts_generic_trait<T: GenericTrait<(), Associated = ()>>(_: T) {}
| ^^^^^^^^^^^^^^^ required by this bound in `accepts_generic_trait`
help: consider constraining the associated type `<impl GenericTrait<()>+Foo as GenericTrait<()>>::Associated` to `()`
help: consider constraining the associated type `<impl GenericTrait<()> + Foo as GenericTrait<()>>::Associated` to `()`
|
LL | fn returns_opaque_generic_foo() -> impl GenericTrait<(), Associated = ()> + Foo {
| +++++++++++++++++
error[E0271]: type mismatch resolving `<impl GenericTrait<()>+GenericTrait<u8> as GenericTrait<()>>::Associated == ()`
error[E0271]: type mismatch resolving `<impl GenericTrait<()> + GenericTrait<u8> as GenericTrait<()>>::Associated == ()`
--> $DIR/issue-87261.rs:97:5
|
LL | fn returns_opaque_generic_duplicate() -> impl GenericTrait<()> + GenericTrait<u8> {
@ -252,8 +252,8 @@ LL | accepts_generic_trait(returns_opaque_generic_duplicate());
| ^^^^^^^^^^^^^^^^^^^^^ expected `()`, found associated type
|
= note: expected unit type `()`
found associated type `<impl GenericTrait<()>+GenericTrait<u8> as GenericTrait<()>>::Associated`
= help: consider constraining the associated type `<impl GenericTrait<()>+GenericTrait<u8> as GenericTrait<()>>::Associated` to `()`
found associated type `<impl GenericTrait<()> + GenericTrait<u8> as GenericTrait<()>>::Associated`
= help: consider constraining the associated type `<impl GenericTrait<()> + GenericTrait<u8> as GenericTrait<()>>::Associated` to `()`
= note: for more information, visit https://doc.rust-lang.org/book/ch19-03-advanced-traits.html
note: required by a bound in `accepts_generic_trait`
--> $DIR/issue-87261.rs:44:46

2
src/test/ui/cast/casts-differing-anon.stderr
View File

@ -1,4 +1,4 @@
error[E0606]: casting `*mut impl Debug+?Sized` as `*mut impl Debug+?Sized` is invalid
error[E0606]: casting `*mut impl Debug + ?Sized` as `*mut impl Debug + ?Sized` is invalid
--> $DIR/casts-differing-anon.rs:21:13
|
LL | b_raw = f_raw as *mut _;