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Sort method suggestions by DefPath instead of DefId

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This commit is contained in:
Oli Scherer 2024-03-21 16:47:04 +00:00
parent 727807293b
commit 57f68c3555
8 changed files with 54 additions and 51 deletions
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2
compiler/rustc_hir_typeck/src/method/mod.rs
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@ -81,7 +81,7 @@ pub struct NoMatchData<'tcx> {
// A pared down enum describing just the places from which a method
// candidate can arise. Used for error reporting only.
#[derive(Copy, Clone, Debug, Eq, Ord, PartialEq, PartialOrd)]
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum CandidateSource {
Impl(DefId),
Trait(DefId /* trait id */),

5
compiler/rustc_hir_typeck/src/method/suggest.rs
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@ -1567,7 +1567,10 @@ fn note_candidates_on_method_error(
sources: &mut Vec<CandidateSource>,
sugg_span: Option<Span>,
) {
sources.sort();
sources.sort_by_key(|source| match source {
CandidateSource::Trait(id) => (0, self.tcx.def_path_str(id)),
CandidateSource::Impl(id) => (1, self.tcx.def_path_str(id)),
});
sources.dedup();
// Dynamic limit to avoid hiding just one candidate, which is silly.
let limit = if sources.len() == 5 { 5 } else { 4 };

12
tests/ui/associated-consts/associated-const-ambiguity-report.stderr
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@ -4,16 +4,16 @@ error[E0034]: multiple applicable items in scope
LL | const X: i32 = <i32>::ID;
| ^^ multiple `ID` found
|
note: candidate #1 is defined in an impl of the trait `Foo` for the type `i32`
--> $DIR/associated-const-ambiguity-report.rs:10:5
|
LL | const ID: i32 = 1;
| ^^^^^^^^^^^^^
note: candidate #2 is defined in an impl of the trait `Bar` for the type `i32`
note: candidate #1 is defined in an impl of the trait `Bar` for the type `i32`
--> $DIR/associated-const-ambiguity-report.rs:14:5
|
LL | const ID: i32 = 3;
| ^^^^^^^^^^^^^
note: candidate #2 is defined in an impl of the trait `Foo` for the type `i32`
--> $DIR/associated-const-ambiguity-report.rs:10:5
|
LL | const ID: i32 = 1;
| ^^^^^^^^^^^^^
help: use fully-qualified syntax to disambiguate
|
LL | const X: i32 = <i32 as Bar>::ID;

14
tests/ui/issues/issue-18446.stderr
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@ -4,17 +4,17 @@ error[E0034]: multiple applicable items in scope
LL | x.foo();
| ^^^ multiple `foo` found
|
note: candidate #1 is defined in an impl for the type `(dyn T + 'a)`
--> $DIR/issue-18446.rs:9:5
|
LL | fn foo(&self) {}
| ^^^^^^^^^^^^^
note: candidate #2 is defined in the trait `T`
note: candidate #1 is defined in the trait `T`
--> $DIR/issue-18446.rs:5:5
|
LL | fn foo(&self);
| ^^^^^^^^^^^^^^
help: disambiguate the method for candidate #2
note: candidate #2 is defined in an impl for the type `(dyn T + 'a)`
--> $DIR/issue-18446.rs:9:5
|
LL | fn foo(&self) {}
| ^^^^^^^^^^^^^
help: disambiguate the method for candidate #1
|
LL | T::foo(&x);
| ~~~~~~~~~~

20
tests/ui/issues/issue-3702-2.stderr
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@ -4,24 +4,24 @@ error[E0034]: multiple applicable items in scope
LL | self.to_int() + other.to_int()
| ^^^^^^ multiple `to_int` found
|
note: candidate #1 is defined in an impl of the trait `ToPrimitive` for the type `isize`
--> $DIR/issue-3702-2.rs:2:5
|
LL | fn to_int(&self) -> isize { 0 }
| ^^^^^^^^^^^^^^^^^^^^^^^^^
note: candidate #2 is defined in an impl of the trait `Add` for the type `isize`
note: candidate #1 is defined in an impl of the trait `Add` for the type `isize`
--> $DIR/issue-3702-2.rs:14:5
|
LL | fn to_int(&self) -> isize { *self }
| ^^^^^^^^^^^^^^^^^^^^^^^^^
help: disambiguate the method for candidate #1
note: candidate #2 is defined in an impl of the trait `ToPrimitive` for the type `isize`
--> $DIR/issue-3702-2.rs:2:5
|
LL | ToPrimitive::to_int(&self) + other.to_int()
| ~~~~~~~~~~~~~~~~~~~~~~~~~~
help: disambiguate the method for candidate #2
LL | fn to_int(&self) -> isize { 0 }
| ^^^^^^^^^^^^^^^^^^^^^^^^^
help: disambiguate the method for candidate #1
|
LL | Add::to_int(&self) + other.to_int()
| ~~~~~~~~~~~~~~~~~~
help: disambiguate the method for candidate #2
|
LL | ToPrimitive::to_int(&self) + other.to_int()
| ~~~~~~~~~~~~~~~~~~~~~~~~~~
error: aborting due to 1 previous error

12
tests/ui/methods/method-ambig-two-traits-cross-crate.stderr
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@ -4,20 +4,20 @@ error[E0034]: multiple applicable items in scope
LL | fn main() { 1_usize.me(); }
| ^^ multiple `me` found
|
= note: candidate #1 is defined in an impl of the trait `Me` for the type `usize`
note: candidate #2 is defined in an impl of the trait `Me2` for the type `usize`
note: candidate #1 is defined in an impl of the trait `Me2` for the type `usize`
--> $DIR/method-ambig-two-traits-cross-crate.rs:10:22
|
LL | impl Me2 for usize { fn me(&self) -> usize { *self } }
| ^^^^^^^^^^^^^^^^^^^^^
= note: candidate #2 is defined in an impl of the trait `Me` for the type `usize`
help: disambiguate the method for candidate #1
|
LL | fn main() { Me::me(&1_usize); }
| ~~~~~~~~~~~~~~~~
help: disambiguate the method for candidate #2
|
LL | fn main() { Me2::me(&1_usize); }
| ~~~~~~~~~~~~~~~~~
help: disambiguate the method for candidate #2
|
LL | fn main() { Me::me(&1_usize); }
| ~~~~~~~~~~~~~~~~
error: aborting due to 1 previous error

16
tests/ui/methods/method-ambig-two-traits-with-default-method.stderr
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@ -4,23 +4,23 @@ error[E0034]: multiple applicable items in scope
LL | 1_usize.method();
| ^^^^^^ multiple `method` found
|
note: candidate #1 is defined in an impl of the trait `Foo` for the type `usize`
--> $DIR/method-ambig-two-traits-with-default-method.rs:5:13
|
LL | trait Foo { fn method(&self) {} }
| ^^^^^^^^^^^^^^^^
note: candidate #2 is defined in an impl of the trait `Bar` for the type `usize`
note: candidate #1 is defined in an impl of the trait `Bar` for the type `usize`
--> $DIR/method-ambig-two-traits-with-default-method.rs:6:13
|
LL | trait Bar { fn method(&self) {} }
| ^^^^^^^^^^^^^^^^
note: candidate #2 is defined in an impl of the trait `Foo` for the type `usize`
--> $DIR/method-ambig-two-traits-with-default-method.rs:5:13
|
LL | trait Foo { fn method(&self) {} }
| ^^^^^^^^^^^^^^^^
help: disambiguate the method for candidate #1
|
LL | Foo::method(&1_usize);
LL | Bar::method(&1_usize);
| ~~~~~~~~~~~~~~~~~~~~~
help: disambiguate the method for candidate #2
|
LL | Bar::method(&1_usize);
LL | Foo::method(&1_usize);
| ~~~~~~~~~~~~~~~~~~~~~
error: aborting due to 1 previous error

24
tests/ui/methods/method-deref-to-same-trait-object-with-separate-params.stderr
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@ -29,33 +29,33 @@ error[E0034]: multiple applicable items in scope
LL | let z = x.foo();
| ^^^ multiple `foo` found
|
note: candidate #1 is defined in an impl of the trait `X` for the type `T`
--> $DIR/method-deref-to-same-trait-object-with-separate-params.rs:45:9
note: candidate #1 is defined in the trait `FinalFoo`
--> $DIR/method-deref-to-same-trait-object-with-separate-params.rs:59:5
|
LL | fn foo(self: Smaht<Self, u64>) -> u64 {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
LL | fn foo(&self) -> u8;
| ^^^^^^^^^^^^^^^^^^^^
note: candidate #2 is defined in an impl of the trait `NuisanceFoo` for the type `T`
--> $DIR/method-deref-to-same-trait-object-with-separate-params.rs:72:9
|
LL | fn foo(self) {}
| ^^^^^^^^^^^^
note: candidate #3 is defined in the trait `FinalFoo`
--> $DIR/method-deref-to-same-trait-object-with-separate-params.rs:59:5
note: candidate #3 is defined in an impl of the trait `X` for the type `T`
--> $DIR/method-deref-to-same-trait-object-with-separate-params.rs:45:9
|
LL | fn foo(&self) -> u8;
| ^^^^^^^^^^^^^^^^^^^^
LL | fn foo(self: Smaht<Self, u64>) -> u64 {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
help: disambiguate the method for candidate #1
|
LL | let z = X::foo(x);
| ~~~~~~~~~
LL | let z = FinalFoo::foo(&x);
| ~~~~~~~~~~~~~~~~~
help: disambiguate the method for candidate #2
|
LL | let z = NuisanceFoo::foo(x);
| ~~~~~~~~~~~~~~~~~~~
help: disambiguate the method for candidate #3
|
LL | let z = FinalFoo::foo(&x);
| ~~~~~~~~~~~~~~~~~
LL | let z = X::foo(x);
| ~~~~~~~~~
error[E0308]: mismatched types
--> $DIR/method-deref-to-same-trait-object-with-separate-params.rs:139:24