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