mirror of
https://github.com/davidhalter/django-stubs.git
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53 lines
1.8 KiB
Python
53 lines
1.8 KiB
Python
from typing import Optional
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from mypy.plugin import ClassDefContext, MethodContext
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from mypy.types import CallableType, Instance, NoneTyp
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from mypy.types import Type as MypyType
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from mypy.types import TypeType
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from mypy_django_plugin.lib import helpers
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def make_meta_nested_class_inherit_from_any(ctx: ClassDefContext) -> None:
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meta_node = helpers.get_nested_meta_node_for_current_class(ctx.cls.info)
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if meta_node is None:
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if not ctx.api.final_iteration:
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ctx.api.defer()
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else:
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meta_node.fallback_to_any = True
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def get_specified_form_class(object_type: Instance) -> Optional[TypeType]:
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form_class_sym = object_type.type.get('form_class')
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if form_class_sym and isinstance(form_class_sym.type, CallableType):
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return TypeType(form_class_sym.type.ret_type)
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return None
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def extract_proper_type_for_get_form(ctx: MethodContext) -> MypyType:
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object_type = ctx.type
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assert isinstance(object_type, Instance)
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form_class_type = helpers.get_call_argument_type_by_name(ctx, 'form_class')
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if form_class_type is None or isinstance(form_class_type, NoneTyp):
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form_class_type = get_specified_form_class(object_type)
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if isinstance(form_class_type, TypeType) and isinstance(form_class_type.item, Instance):
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return form_class_type.item
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if isinstance(form_class_type, CallableType) and isinstance(form_class_type.ret_type, Instance):
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return form_class_type.ret_type
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return ctx.default_return_type
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def extract_proper_type_for_get_form_class(ctx: MethodContext) -> MypyType:
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object_type = ctx.type
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assert isinstance(object_type, Instance)
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form_class_type = get_specified_form_class(object_type)
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if form_class_type is None:
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return ctx.default_return_type
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return form_class_type
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