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Rollup merge of #83092 - petrochenkov:qspan, r=estebank

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More precise spans for HIR paths

`Ty::assoc_item` is lowered to `<Ty>::assoc_item` in HIR, but `Ty` got span from the whole path.
This PR fixes that, and adjusts some diagnostic code that relied on `Ty` having the whole path span.

This is a pre-requisite for https://github.com/rust-lang/rust/pull/82868 (we cannot report suggestions like `Tr::assoc` -> `<dyn Tr>::assoc` with the current imprecise spans).
r? ````@estebank````
This commit is contained in:
Yuki Okushi 2021-03-17 15:20:54 +09:00 committed by GitHub
commit 5476382dda
5 changed files with 26 additions and 36 deletions
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21
tests/ui/use_self.fixed
View file

@ -312,17 +312,18 @@ mod issue4140 {
fn try_from(value: T) -> Result<Self, Error<Self::From, Self::To>>;
}
impl<F, T> TryFrom<F> for T
where
T: From<F>,
{
type From = Self;
type To = Self;
// FIXME: Suggested fix results in infinite recursion.
// impl<F, T> TryFrom<F> for T
// where
// T: From<F>,
// {
// type From = Self::From;
// type To = Self::To;
fn try_from(value: F) -> Result<Self, Error<Self::From, Self::To>> {
Ok(From::from(value))
}
}
// fn try_from(value: F) -> Result<Self, Error<Self::From, Self::To>> {
// Ok(From::from(value))
// }
// }
impl From<bool> for i64 {
type From = bool;

21
tests/ui/use_self.rs
View file

@ -312,17 +312,18 @@ mod issue4140 {
fn try_from(value: T) -> Result<Self, Error<Self::From, Self::To>>;
}
impl<F, T> TryFrom<F> for T
where
T: From<F>,
{
type From = T::From;
type To = T::To;
// FIXME: Suggested fix results in infinite recursion.
// impl<F, T> TryFrom<F> for T
// where
// T: From<F>,
// {
// type From = Self::From;
// type To = Self::To;
fn try_from(value: F) -> Result<Self, Error<Self::From, Self::To>> {
Ok(From::from(value))
}
}
// fn try_from(value: F) -> Result<Self, Error<Self::From, Self::To>> {
// Ok(From::from(value))
// }
// }
impl From<bool> for i64 {
type From = bool;

16
tests/ui/use_self.stderr
View file

@ -157,22 +157,10 @@ LL | Foo { value }
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:319:21
|
LL | type From = T::From;
| ^^^^^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:320:19
|
LL | type To = T::To;
| ^^^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:453:13
--> $DIR/use_self.rs:454:13
|
LL | A::new::<submod::B>(submod::B {})
| ^ help: use the applicable keyword: `Self`
error: aborting due to 29 previous errors
error: aborting due to 27 previous errors

2
tests/ui/zero_sized_btreemap_values.stderr
View file

@ -83,7 +83,7 @@ error: map with zero-sized value type
--> $DIR/zero_sized_btreemap_values.rs:64:35
|
LL | let _: BTreeMap<String, ()> = BTreeMap::new();
| ^^^^^^^^^^^^^
| ^^^^^^^^
|
= help: consider using a set instead

2
tests/ui/zero_sized_hashmap_values.stderr
View file

@ -83,7 +83,7 @@ error: map with zero-sized value type
--> $DIR/zero_sized_hashmap_values.rs:64:34
|
LL | let _: HashMap<String, ()> = HashMap::new();
| ^^^^^^^^^^^^
| ^^^^^^^
|
= help: consider using a set instead