| from mypy.plugin import CallableType, CheckerPluginInterface, MethodSigContext, Plugin |
| from mypy.types import Instance, Type |
| |
| class MethodSigPlugin(Plugin): |
| def get_method_signature_hook(self, fullname): |
| # Ensure that all names are fully qualified |
| assert not fullname.endswith(' of Foo') |
| |
| if fullname.startswith('__main__.Foo.'): |
| return my_hook |
| |
| return None |
| |
| def _str_to_int(api: CheckerPluginInterface, typ: Type) -> Type: |
| if isinstance(typ, Instance): |
| if typ.type.fullname == 'builtins.str': |
| return api.named_generic_type('builtins.int', []) |
| elif typ.args: |
| return typ.copy_modified(args=[_str_to_int(api, t) for t in typ.args]) |
| |
| return typ |
| |
| def my_hook(ctx: MethodSigContext) -> CallableType: |
| return ctx.default_signature.copy_modified( |
| arg_types=[_str_to_int(ctx.api, t) for t in ctx.default_signature.arg_types], |
| ret_type=_str_to_int(ctx.api, ctx.default_signature.ret_type), |
| ) |
| |
| def plugin(version): |
| return MethodSigPlugin |
