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use constraint sets for lhs contrained typevars

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Douglas Creager 2025-08-27 09:15:22 -04:00
parent c6f5bca2a8
commit 19c421a27b
1 changed files with 18 additions and 2 deletions
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16
crates/ty_python_semantic/src/types.rs
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@ -1612,9 +1612,17 @@ impl<'db> Type<'db> {
.constraints(db)
.when_some_and(|constraints| {
constraints.iter().when_all(db, |constraint| {
ConstraintSet::constrain_typevar(
db,
bound_typevar,
*constraint,
*constraint,
)
.implies(db, || {
self.has_relation_to_impl(db, *constraint, relation, visitor)
})
})
})
.is_never_satisfied() =>
{
// TODO: The repetition here isn't great, but we really need the fallthrough logic,
@ -1626,9 +1634,17 @@ impl<'db> Type<'db> {
.constraints(db)
.when_some_and(|constraints| {
constraints.iter().when_all(db, |constraint| {
ConstraintSet::constrain_typevar(
db,
bound_typevar,
*constraint,
*constraint,
)
.implies(db, || {
self.has_relation_to_impl(db, *constraint, relation, visitor)
})
})
})
}
(Type::TypeVar(_), _) if relation.is_assignability() => {