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Don't allocate empty generics

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This commit is contained in:
Jonas Schievink 2020-06-24 15:54:35 +02:00
parent 43cad21623
commit abdba92334
4 changed files with 78 additions and 40 deletions
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14
crates/ra_hir_def/src/generics.rs
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@ -80,43 +80,43 @@ impl GenericParams {
let id = id.lookup(db).id;
let tree = db.item_tree(id.file_id);
let item = &tree[id.value];
item.generic_params.clone()
tree[item.generic_params].clone()
}
GenericDefId::AdtId(AdtId::StructId(id)) => {
let id = id.lookup(db).id;
let tree = db.item_tree(id.file_id);
let item = &tree[id.value];
item.generic_params.clone()
tree[item.generic_params].clone()
}
GenericDefId::AdtId(AdtId::EnumId(id)) => {
let id = id.lookup(db).id;
let tree = db.item_tree(id.file_id);
let item = &tree[id.value];
item.generic_params.clone()
tree[item.generic_params].clone()
}
GenericDefId::AdtId(AdtId::UnionId(id)) => {
let id = id.lookup(db).id;
let tree = db.item_tree(id.file_id);
let item = &tree[id.value];
item.generic_params.clone()
tree[item.generic_params].clone()
}
GenericDefId::TraitId(id) => {
let id = id.lookup(db).id;
let tree = db.item_tree(id.file_id);
let item = &tree[id.value];
item.generic_params.clone()
tree[item.generic_params].clone()
}
GenericDefId::TypeAliasId(id) => {
let id = id.lookup(db).id;
let tree = db.item_tree(id.file_id);
let item = &tree[id.value];
item.generic_params.clone()
tree[item.generic_params].clone()
}
GenericDefId::ImplId(id) => {
let id = id.lookup(db).id;
let tree = db.item_tree(id.file_id);
let item = &tree[id.value];
item.generic_params.clone()
tree[item.generic_params].clone()
}
GenericDefId::EnumVariantId(_) | GenericDefId::ConstId(_) => GenericParams::default(),
};