mirror of
https://github.com/davidhalter/django-stubs.git
synced 2025-12-10 14:01:56 +08:00
44151c485d
* updated package setup * updated to use python 3.9 * fixed test runner * fixed typecheck tests * fixed discrepencies * added override to runner * updated travis * updated pre-commit hooks * updated dep
55 lines
2.1 KiB
Python
55 lines
2.1 KiB
Python
from mypy.plugin import MethodContext
|
|
from mypy.types import AnyType, Instance
|
|
from mypy.types import Type as MypyType
|
|
from mypy.types import TypeOfAny
|
|
|
|
from mypy_django_plugin.django.context import DjangoContext
|
|
from mypy_django_plugin.lib import fullnames, helpers
|
|
|
|
|
|
def typecheck_queryset_filter(ctx: MethodContext, django_context: DjangoContext) -> MypyType:
|
|
lookup_kwargs = ctx.arg_names[1]
|
|
provided_lookup_types = ctx.arg_types[1]
|
|
|
|
assert isinstance(ctx.type, Instance)
|
|
|
|
if not ctx.type.args or not isinstance(ctx.type.args[0], Instance):
|
|
return ctx.default_return_type
|
|
|
|
model_cls_fullname = ctx.type.args[0].type.fullname
|
|
model_cls = django_context.get_model_class_by_fullname(model_cls_fullname)
|
|
if model_cls is None:
|
|
return ctx.default_return_type
|
|
|
|
for lookup_kwarg, provided_type in zip(lookup_kwargs, provided_lookup_types):
|
|
if lookup_kwarg is None:
|
|
continue
|
|
if isinstance(provided_type, Instance) and provided_type.type.has_base(
|
|
"django.db.models.expressions.Combinable"
|
|
):
|
|
provided_type = resolve_combinable_type(provided_type, django_context)
|
|
|
|
lookup_type = django_context.resolve_lookup_expected_type(ctx, model_cls, lookup_kwarg)
|
|
# Managers as provided_type is not supported yet
|
|
if isinstance(provided_type, Instance) and helpers.has_any_of_bases(
|
|
provided_type.type, (fullnames.MANAGER_CLASS_FULLNAME, fullnames.QUERYSET_CLASS_FULLNAME)
|
|
):
|
|
return ctx.default_return_type
|
|
|
|
helpers.check_types_compatible(
|
|
ctx,
|
|
expected_type=lookup_type,
|
|
actual_type=provided_type,
|
|
error_message=f"Incompatible type for lookup {lookup_kwarg!r}:",
|
|
)
|
|
|
|
return ctx.default_return_type
|
|
|
|
|
|
def resolve_combinable_type(combinable_type: Instance, django_context: DjangoContext) -> MypyType:
|
|
if combinable_type.type.fullname != fullnames.F_EXPRESSION_FULLNAME:
|
|
# Combinables aside from F expressions are unsupported
|
|
return AnyType(TypeOfAny.explicit)
|
|
|
|
return django_context.resolve_f_expression_type(combinable_type)
|