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Add semantic tag for unresolved references

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This is a quick way to implement unresolved reference diagnostics.
For example, adding to VS Code config

    "editor.tokenColorCustomizationsExperimental": {
        "unresolvedReference": "#FF0000"
    },

will highlight all unresolved refs in red.
This commit is contained in:
Aleksey Kladov 2020-04-18 20:59:22 +02:00
parent 9b16ae5149
commit ca61356b01
7 changed files with 34 additions and 21 deletions
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29
crates/ra_ide/src/syntax_highlighting.rs
View file

@ -239,20 +239,21 @@ fn highlight_element(
NAME_REF if element.ancestors().any(|it| it.kind() == ATTR) => return None,
NAME_REF => {
let name_ref = element.into_node().and_then(ast::NameRef::cast).unwrap();
let name_kind = classify_name_ref(sema, &name_ref)?;
match name_kind {
NameRefClass::Definition(def) => {
if let Definition::Local(local) = &def {
if let Some(name) = local.name(db) {
let shadow_count =
bindings_shadow_count.entry(name.clone()).or_default();
binding_hash = Some(calc_binding_hash(&name, *shadow_count))
}
};
highlight_name(db, def)
}
NameRefClass::FieldShorthand { .. } => HighlightTag::Field.into(),
match classify_name_ref(sema, &name_ref) {
Some(name_kind) => match name_kind {
NameRefClass::Definition(def) => {
if let Definition::Local(local) = &def {
if let Some(name) = local.name(db) {
let shadow_count =
bindings_shadow_count.entry(name.clone()).or_default();
binding_hash = Some(calc_binding_hash(&name, *shadow_count))
}
};
highlight_name(db, def)
}
NameRefClass::FieldShorthand { .. } => HighlightTag::Field.into(),
},
None => HighlightTag::UnresolvedReference.into(),
}
}