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Save allocations for empty generic_defaults query results

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This commit is contained in:
Lukas Wirth 2024-06-21 19:09:43 +02:00
parent 2761b1e236
commit 34ba8db3ed
3 changed files with 67 additions and 60 deletions
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15
crates/hir-ty/src/lib.rs
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@ -330,18 +330,15 @@ pub(crate) fn make_single_type_binders<T: HasInterner<Interner = Interner>>(
)
}
pub(crate) fn make_binders_with_count<T: HasInterner<Interner = Interner>>(
pub(crate) fn make_binders<T: HasInterner<Interner = Interner>>(
db: &dyn HirDatabase,
count: usize,
generics: &Generics,
value: T,
) -> Binders<T> {
let it = generics.iter_id().take(count);
Binders::new(
VariableKinds::from_iter(
Interner,
it.map(|x| match x {
generics.iter_id().map(|x| match x {
hir_def::GenericParamId::ConstParamId(id) => {
chalk_ir::VariableKind::Const(db.const_param_ty(id))
}
@ -355,14 +352,6 @@ pub(crate) fn make_binders_with_count<T: HasInterner<Interner = Interner>>(
)
}
pub(crate) fn make_binders<T: HasInterner<Interner = Interner>>(
db: &dyn HirDatabase,
generics: &Generics,
value: T,
) -> Binders<T> {
make_binders_with_count(db, usize::MAX, generics, value)
}
// FIXME: get rid of this, just replace it by FnPointer
/// A function signature as seen by type inference: Several parameter types and
/// one return type.