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Fix use_self false positive on nested functions

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This commit is contained in:
Taiki Endo 2019-03-11 23:24:49 +09:00
parent 1cdac4a9c7
commit 187ce4c5ab
4 changed files with 38 additions and 5 deletions
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3
clippy_lints/src/use_self.rs
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@ -248,7 +248,8 @@ impl<'a, 'tcx> Visitor<'tcx> for UseSelfVisitor<'a, 'tcx> {
| ItemKind::Enum(..) | ItemKind::Enum(..)
| ItemKind::Struct(..) | ItemKind::Struct(..)
| ItemKind::Union(..) | ItemKind::Union(..)
| ItemKind::Impl(..) => { | ItemKind::Impl(..)
| ItemKind::Fn(..) => {
// Don't check statements that shadow `Self` or where `Self` can't be used // Don't check statements that shadow `Self` or where `Self` can't be used
}, },
_ => walk_item(self, item), _ => walk_item(self, item),

10
tests/ui/use_self.fixed
View file

@ -249,6 +249,16 @@ mod nesting {
Self { foo: Foo {} } Self { foo: Foo {} }
} }
} }
// Can't use Self here
fn baz() -> Foo {
Foo {}
}
}
// Should lint here
fn baz() -> Self {
Self {}
} }
} }

10
tests/ui/use_self.rs
View file

@ -249,6 +249,16 @@ mod nesting {
Bar { foo: Foo {} } Bar { foo: Foo {} }
} }
} }
// Can't use Self here
fn baz() -> Foo {
Foo {}
}
}
// Should lint here
fn baz() -> Foo {
Foo {}
} }
} }

20
tests/ui/use_self.stderr
View file

@ -150,6 +150,18 @@ LL | Foo {}
LL | use_self_expand!(); // Should lint in local macros LL | use_self_expand!(); // Should lint in local macros
| ------------------- in this macro invocation | ------------------- in this macro invocation
error: unnecessary structure name repetition
--> $DIR/use_self.rs:260:21
|
LL | fn baz() -> Foo {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:261:13
|
LL | Foo {}
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition error: unnecessary structure name repetition
--> $DIR/use_self.rs:248:29 --> $DIR/use_self.rs:248:29
| |
@ -163,22 +175,22 @@ LL | Bar { foo: Foo {} }
| ^^^ help: use the applicable keyword: `Self` | ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition error: unnecessary structure name repetition
--> $DIR/use_self.rs:293:13 --> $DIR/use_self.rs:303:13
| |
LL | nested::A::fun_1(); LL | nested::A::fun_1();
| ^^^^^^^^^ help: use the applicable keyword: `Self` | ^^^^^^^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition error: unnecessary structure name repetition
--> $DIR/use_self.rs:294:13 --> $DIR/use_self.rs:304:13
| |
LL | nested::A::A; LL | nested::A::A;
| ^^^^^^^^^ help: use the applicable keyword: `Self` | ^^^^^^^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition error: unnecessary structure name repetition
--> $DIR/use_self.rs:296:13 --> $DIR/use_self.rs:306:13
| |
LL | nested::A {}; LL | nested::A {};
| ^^^^^^^^^ help: use the applicable keyword: `Self` | ^^^^^^^^^ help: use the applicable keyword: `Self`
error: aborting due to 29 previous errors error: aborting due to 31 previous errors