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Implement hover for ConstParam

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This commit is contained in:
Lukas Wirth 2021-01-04 14:18:31 +01:00
parent 5771cad451
commit 0ae0909a16
2 changed files with 29 additions and 4 deletions
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22
crates/ide/src/hover.rs
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@ -371,10 +371,7 @@ fn hover_for_definition(db: &RootDatabase, def: Definition) -> Option<Markup> {
Definition::Label(it) => Some(Markup::fenced_block(&it.name(db))),
Definition::LifetimeParam(it) => Some(Markup::fenced_block(&it.name(db))),
Definition::TypeParam(type_param) => Some(Markup::fenced_block(&type_param.display(db))),
Definition::ConstParam(_) => {
// FIXME: Hover for generic const param
None
}
Definition::ConstParam(it) => from_def_source(db, it, None),
};
fn from_def_source<A, D>(db: &RootDatabase, def: D, mod_path: Option<String>) -> Option<Markup>
@ -3305,4 +3302,21 @@ impl<T: 'static> Foo<T<|>> {}
"#]],
);
}
#[test]
fn hover_const_param() {
check(
r#"
struct Foo<const LEN: usize>;
impl<const LEN: usize> Foo<LEN<|>> {}
"#,
expect![[r#"
*LEN*
```rust
const LEN: usize
```
"#]],
);
}
}