bindings_shadow_count.clear();
return None;
}
-
// Highlight definitions depending on the "type" of the definition.
NAME => {
let name = element.into_node().and_then(ast::Name::cast).unwrap();
- let name_kind = NameClass::classify(sema, &name);
-
- if let Some(NameClass::Definition(Definition::Local(local))) = &name_kind {
- if let Some(name) = local.name(db) {
- let shadow_count = bindings_shadow_count.entry(name.clone()).or_default();
- *shadow_count += 1;
- binding_hash = Some(calc_binding_hash(&name, *shadow_count))
- }
- };
-
- match name_kind {
- Some(NameClass::Definition(def)) => {
- let mut h = highlight_def(db, krate, def) | HlMod::Definition;
- if let Definition::ModuleDef(hir::ModuleDef::Trait(trait_)) = &def {
- if trait_.is_unsafe(db) {
- h |= HlMod::Unsafe;
- }
- }
- h
- }
- Some(NameClass::ConstReference(def)) => highlight_def(db, krate, def),
- Some(NameClass::PatFieldShorthand { field_ref, .. }) => {
- let mut h = HlTag::Symbol(SymbolKind::Field).into();
- if let hir::VariantDef::Union(_) = field_ref.parent_def(db) {
- h |= HlMod::Unsafe;
- }
- h
- }
- None => highlight_name_by_syntax(name) | HlMod::Definition,
- }
+ highlight_name(sema, bindings_shadow_count, &mut binding_hash, krate, name)
}
// Highlight references like the definitions they resolve to
NAME_REF if element.ancestors().any(|it| it.kind() == ATTR) => {
// currently not knowing about tool attributes and rustc builtin attributes as
// we do not want to resolve those to functions that may be defined in scope.
let name_ref = element.into_node().and_then(ast::NameRef::cast).unwrap();
- match NameRefClass::classify(sema, &name_ref) {
- Some(name_class) => match name_class {
- NameRefClass::Definition(Definition::ModuleDef(hir::ModuleDef::Module(_)))
- if name_ref
- .syntax()
- .ancestors()
- .find_map(ast::Path::cast)
- .map_or(false, |it| it.parent_path().is_some()) =>
- {
- HlTag::Symbol(SymbolKind::Module)
- }
- NameRefClass::Definition(Definition::Macro(m))
- if m.kind() == hir::MacroKind::Attr =>
- {
- HlTag::Symbol(SymbolKind::Macro)
- }
- _ => HlTag::BuiltinAttr,
- },
- None => HlTag::BuiltinAttr,
- }
- .into()
+ highlight_name_ref_in_attr(sema, name_ref)
}
NAME_REF => {
let name_ref = element.into_node().and_then(ast::NameRef::cast).unwrap();
- highlight_method_call_by_name_ref(sema, krate, &name_ref).unwrap_or_else(|| {
- let name_class = match NameRefClass::classify(sema, &name_ref) {
- Some(name_kind) => name_kind,
- None => {
- return if syntactic_name_ref_highlighting {
- highlight_name_ref_by_syntax(name_ref, sema, krate)
- } else {
- HlTag::UnresolvedReference.into()
- }
- }
- };
- let h = match name_class {
- 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))
- }
- };
-
- let mut h = highlight_def(db, krate, def);
-
- match def {
- Definition::Local(local)
- if is_consumed_lvalue(name_ref.syntax(), &local, db) =>
- {
- h |= HlMod::Consuming;
- }
- Definition::ModuleDef(hir::ModuleDef::Trait(trait_))
- if trait_.is_unsafe(db) =>
- {
- if ast::Impl::for_trait_name_ref(&name_ref).is_some() {
- h |= HlMod::Unsafe;
- }
- }
- Definition::Field(field) => {
- if let Some(parent) = name_ref.syntax().parent() {
- if matches!(parent.kind(), FIELD_EXPR | RECORD_PAT_FIELD) {
- if let hir::VariantDef::Union(_) = field.parent_def(db) {
- h |= HlMod::Unsafe;
- }
- }
- }
- }
- _ => (),
- }
-
- h
- }
- NameRefClass::FieldShorthand { .. } => SymbolKind::Field.into(),
- };
- if h.tag == HlTag::Symbol(SymbolKind::Module) && name_ref.self_token().is_some() {
- SymbolKind::SelfParam.into()
- } else {
- h
- }
- })
+ highlight_name_ref(
+ sema,
+ krate,
+ bindings_shadow_count,
+ &mut binding_hash,
+ syntactic_name_ref_highlighting,
+ name_ref,
+ )
}
// Simple token-based highlighting
};
return Some((highlight, binding_hash));
+}
- fn calc_binding_hash(name: &hir::Name, shadow_count: u32) -> u64 {
- fn hash<T: std::hash::Hash + std::fmt::Debug>(x: T) -> u64 {
- use std::{collections::hash_map::DefaultHasher, hash::Hasher};
+fn highlight_name_ref_in_attr(sema: &Semantics<RootDatabase>, name_ref: ast::NameRef) -> Highlight {
+ match NameRefClass::classify(sema, &name_ref) {
+ Some(name_class) => match name_class {
+ NameRefClass::Definition(Definition::ModuleDef(hir::ModuleDef::Module(_)))
+ if name_ref
+ .syntax()
+ .ancestors()
+ .find_map(ast::Path::cast)
+ .map_or(false, |it| it.parent_path().is_some()) =>
+ {
+ HlTag::Symbol(SymbolKind::Module)
+ }
+ NameRefClass::Definition(Definition::Macro(m)) if m.kind() == hir::MacroKind::Attr => {
+ HlTag::Symbol(SymbolKind::Macro)
+ }
+ _ => HlTag::BuiltinAttr,
+ },
+ None => HlTag::BuiltinAttr,
+ }
+ .into()
+}
- let mut hasher = DefaultHasher::new();
- x.hash(&mut hasher);
- hasher.finish()
+fn highlight_name_ref(
+ sema: &Semantics<RootDatabase>,
+ krate: Option<hir::Crate>,
+ bindings_shadow_count: &mut FxHashMap<hir::Name, u32>,
+ binding_hash: &mut Option<u64>,
+ syntactic_name_ref_highlighting: bool,
+ name_ref: ast::NameRef,
+) -> Highlight {
+ let db = sema.db;
+ highlight_method_call_by_name_ref(sema, krate, &name_ref).unwrap_or_else(|| {
+ let name_class = match NameRefClass::classify(sema, &name_ref) {
+ Some(name_kind) => name_kind,
+ None => {
+ return if syntactic_name_ref_highlighting {
+ highlight_name_ref_by_syntax(name_ref, sema, krate)
+ } else {
+ HlTag::UnresolvedReference.into()
+ }
+ }
+ };
+ let h = match name_class {
+ 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))
+ }
+ };
+
+ let mut h = highlight_def(db, krate, def);
+
+ match def {
+ Definition::Local(local)
+ if is_consumed_lvalue(name_ref.syntax(), &local, db) =>
+ {
+ h |= HlMod::Consuming;
+ }
+ Definition::ModuleDef(hir::ModuleDef::Trait(trait_))
+ if trait_.is_unsafe(db) =>
+ {
+ if ast::Impl::for_trait_name_ref(&name_ref).is_some() {
+ h |= HlMod::Unsafe;
+ }
+ }
+ Definition::Field(field) => {
+ if let Some(parent) = name_ref.syntax().parent() {
+ if matches!(parent.kind(), FIELD_EXPR | RECORD_PAT_FIELD) {
+ if let hir::VariantDef::Union(_) = field.parent_def(db) {
+ h |= HlMod::Unsafe;
+ }
+ }
+ }
+ }
+ _ => (),
+ }
+
+ h
+ }
+ NameRefClass::FieldShorthand { .. } => SymbolKind::Field.into(),
+ };
+ if h.tag == HlTag::Symbol(SymbolKind::Module) && name_ref.self_token().is_some() {
+ SymbolKind::SelfParam.into()
+ } else {
+ h
+ }
+ })
+}
+
+fn highlight_name(
+ sema: &Semantics<RootDatabase>,
+ bindings_shadow_count: &mut FxHashMap<hir::Name, u32>,
+ binding_hash: &mut Option<u64>,
+ krate: Option<hir::Crate>,
+ name: ast::Name,
+) -> Highlight {
+ let db = sema.db;
+ let name_kind = NameClass::classify(sema, &name);
+ if let Some(NameClass::Definition(Definition::Local(local))) = &name_kind {
+ if let Some(name) = local.name(db) {
+ let shadow_count = bindings_shadow_count.entry(name.clone()).or_default();
+ *shadow_count += 1;
+ *binding_hash = Some(calc_binding_hash(&name, *shadow_count))
+ }
+ };
+ match name_kind {
+ Some(NameClass::Definition(def)) => {
+ let mut h = highlight_def(db, krate, def) | HlMod::Definition;
+ if let Definition::ModuleDef(hir::ModuleDef::Trait(trait_)) = &def {
+ if trait_.is_unsafe(db) {
+ h |= HlMod::Unsafe;
+ }
+ }
+ h
+ }
+ Some(NameClass::ConstReference(def)) => highlight_def(db, krate, def),
+ Some(NameClass::PatFieldShorthand { field_ref, .. }) => {
+ let mut h = HlTag::Symbol(SymbolKind::Field).into();
+ if let hir::VariantDef::Union(_) = field_ref.parent_def(db) {
+ h |= HlMod::Unsafe;
+ }
+ h
}
+ None => highlight_name_by_syntax(name) | HlMod::Definition,
+ }
+}
- hash((name, shadow_count))
+fn calc_binding_hash(name: &hir::Name, shadow_count: u32) -> u64 {
+ fn hash<T: std::hash::Hash + std::fmt::Debug>(x: T) -> u64 {
+ use std::{collections::hash_map::DefaultHasher, hash::Hasher};
+
+ let mut hasher = DefaultHasher::new();
+ x.hash(&mut hasher);
+ hasher.finish()
}
+
+ hash((name, shadow_count))
}
+
fn highlight_def(db: &RootDatabase, krate: Option<hir::Crate>, def: Definition) -> Highlight {
let mut h = match def {
Definition::Macro(_) => Highlight::new(HlTag::Symbol(SymbolKind::Macro)),
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