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Impl HasAttrs for GenericParam

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This commit is contained in:
Lukas Wirth 2021-01-02 00:42:07 +01:00
parent b4a7caedb0
commit ec448ca4b3
5 changed files with 78 additions and 11 deletions
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21
crates/hir_def/src/attr.rs
View file

@ -21,7 +21,7 @@ use crate::{
nameres::ModuleSource,
path::{ModPath, PathKind},
src::HasChildSource,
AdtId, AttrDefId, Lookup,
AdtId, AttrDefId, GenericParamId, Lookup,
};
/// Holds documentation
@ -235,6 +235,25 @@ impl Attrs {
AttrDefId::StaticId(it) => attrs_from_item_tree(it.lookup(db).id, db),
AttrDefId::FunctionId(it) => attrs_from_item_tree(it.lookup(db).id, db),
AttrDefId::TypeAliasId(it) => attrs_from_item_tree(it.lookup(db).id, db),
AttrDefId::GenericParamId(it) => match it {
GenericParamId::TypeParamId(it) => {
let src = it.parent.child_source(db);
RawAttrs::from_attrs_owner(
db,
src.with_value(
src.value[it.local_id].as_ref().either(|it| it as _, |it| it as _),
),
)
}
GenericParamId::LifetimeParamId(it) => {
let src = it.parent.child_source(db);
RawAttrs::from_attrs_owner(db, src.with_value(&src.value[it.local_id]))
}
GenericParamId::ConstParamId(it) => {
let src = it.parent.child_source(db);
RawAttrs::from_attrs_owner(db, src.with_value(&src.value[it.local_id]))
}
},
};
raw_attrs.filter(db, def.krate(db))

22
crates/hir_def/src/lib.rs
View file

@ -261,6 +261,15 @@ pub enum AdtId {
}
impl_from!(StructId, UnionId, EnumId for AdtId);
/// A generic param
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub enum GenericParamId {
TypeParamId(TypeParamId),
LifetimeParamId(LifetimeParamId),
ConstParamId(ConstParamId),
}
impl_from!(TypeParamId, LifetimeParamId, ConstParamId for GenericParamId);
/// The defs which can be visible in the module.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum ModuleDefId {
@ -357,6 +366,7 @@ pub enum AttrDefId {
TypeAliasId(TypeAliasId),
MacroDefId(MacroDefId),
ImplId(ImplId),
GenericParamId(GenericParamId),
}
impl_from!(
@ -370,7 +380,8 @@ impl_from!(
TraitId,
TypeAliasId,
MacroDefId,
ImplId
ImplId,
GenericParamId
for AttrDefId
);
@ -495,6 +506,15 @@ impl AttrDefId {
AttrDefId::TraitId(it) => it.lookup(db).container.module(db).krate,
AttrDefId::TypeAliasId(it) => it.lookup(db).module(db).krate,
AttrDefId::ImplId(it) => it.lookup(db).container.module(db).krate,
AttrDefId::GenericParamId(it) => {
match it {
GenericParamId::TypeParamId(it) => it.parent,
GenericParamId::LifetimeParamId(it) => it.parent,
GenericParamId::ConstParamId(it) => it.parent,
}
.module(db)
.krate
}
// FIXME: `MacroDefId` should store the defining module, then this can implement
// `HasModule`
AttrDefId::MacroDefId(it) => it.krate,