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Check if parameters is empty

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This commit is contained in:
Edwin Cheng 2019-12-24 23:39:44 +08:00
parent 3a2cf708ed
commit 42813126d9
1 changed files with 6 additions and 4 deletions
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8
crates/ra_hir_ty/src/infer.rs
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@ -387,14 +387,16 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
if let Ty::Opaque(ref predicates) = inner_ty { if let Ty::Opaque(ref predicates) = inner_ty {
for p in predicates.iter() { for p in predicates.iter() {
if let GenericPredicate::Projection(projection) = p { if let GenericPredicate::Projection(projection) = p {
if projection.projection_ty.associated_ty == res_assoc_ty if projection.projection_ty.associated_ty == res_assoc_ty {
&& projection.ty != Ty::Unknown if let ty_app!(_, params) = &projection.ty {
{ if params.len() == 0 {
return projection.ty.clone(); return projection.ty.clone();
} }
} }
} }
} }
}
}
let ty = self.table.new_type_var(); let ty = self.table.new_type_var();
let builder = Substs::build_for_def(self.db, res_assoc_ty) let builder = Substs::build_for_def(self.db, res_assoc_ty)