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from __future__ import annotations
from typing import Callable
from mypy.nodes import ARG_POS, Argument, Var
from mypy.plugin import ClassDefContext, Plugin
from mypy.plugins.common import add_method
from mypy.types import NoneType
class ClassMethodPlugin(Plugin):
def get_base_class_hook(self, fullname: str) -> Callable[[ClassDefContext], None] | None:
if "BaseAddMethod" in fullname:
return add_extra_methods_hook
return None
def add_extra_methods_hook(ctx: ClassDefContext) -> None:
add_method(ctx, "foo_classmethod", [], NoneType(), is_classmethod=True)
add_method(
ctx,
"foo_staticmethod",
[Argument(Var(""), ctx.api.named_type("builtins.int"), None, ARG_POS)],
ctx.api.named_type("builtins.str"),
is_staticmethod=True,
)
def plugin(version: str) -> type[ClassMethodPlugin]:
return ClassMethodPlugin
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