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check valid specs in is_foo

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Douglas Creager 2025-09-16 20:45:56 -04:00
parent 0648762432
commit 2210bc98b7
1 changed files with 10 additions and 2 deletions
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12
crates/ty_python_semantic/src/types.rs
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@ -1446,7 +1446,11 @@ impl<'db> Type<'db> {
/// intersection simplification dependent on the order in which elements are added), so we do
/// not use this more general definition of subtyping.
pub(crate) fn is_subtype_of(self, db: &'db dyn Db, target: Type<'db>) -> bool {
self.when_subtype_of(db, target).is_always_satisfied()
let valid_specializations =
(self.valid_specializations(db)).and(db, || target.valid_specializations(db));
valid_specializations
.implies(db, || self.when_subtype_of(db, target))
.is_always_satisfied()
}
/// Return the constraints under which this type is a [subtype of] type `target`. (See
@ -1470,7 +1474,11 @@ impl<'db> Type<'db> {
///
/// [assignable to]: https://typing.python.org/en/latest/spec/concepts.html#the-assignable-to-or-consistent-subtyping-relation
pub(crate) fn is_assignable_to(self, db: &'db dyn Db, target: Type<'db>) -> bool {
self.when_assignable_to(db, target).is_always_satisfied()
let valid_specializations =
(self.valid_specializations(db)).and(db, || target.valid_specializations(db));
valid_specializations
.implies(db, || self.when_assignable_to(db, target))
.is_always_satisfied()
}
/// Returns the constraints under which this type is [assignable to] type `target`.