Method transform_args

mypy/fastparse.py:1078–1120

(
        self, args: ast3.arguments, line: int, no_type_check: bool = False
    )

            type.optional = optional

    def transform_args(
        self, args: ast3.arguments, line: int, no_type_check: bool = False
    ) -> list[Argument]:
        new_args = []
        names: list[ast3.arg] = []
        posonlyargs = args.posonlyargs
        args_args = posonlyargs + args.args
        args_defaults = args.defaults
        num_no_defaults = len(args_args) - len(args_defaults)
        # positional arguments without defaults
        for i, a in enumerate(args_args[:num_no_defaults]):
            pos_only = i < len(posonlyargs)
            new_args.append(self.make_argument(a, None, ARG_POS, no_type_check, pos_only))
            names.append(a)

        # positional arguments with defaults
        for i, (a, d) in enumerate(zip(args_args[num_no_defaults:], args_defaults)):
            pos_only = num_no_defaults + i < len(posonlyargs)
            new_args.append(self.make_argument(a, d, ARG_OPT, no_type_check, pos_only))
            names.append(a)

        # *arg
        if args.vararg is not None:
            new_args.append(self.make_argument(args.vararg, None, ARG_STAR, no_type_check))
            names.append(args.vararg)

        # keyword-only arguments with defaults
        for a, kd in zip(args.kwonlyargs, args.kw_defaults):
            new_args.append(
                self.make_argument(
                    a, kd, ARG_NAMED if kd is None else ARG_NAMED_OPT, no_type_check
                )
            )
            names.append(a)

        # **kwarg
        if args.kwarg is not None:
            new_args.append(self.make_argument(args.kwarg, None, ARG_STAR2, no_type_check))
            names.append(args.kwarg)

        check_param_names([arg.variable.name for arg in new_args], names, self.fail_arg)

        return new_args

    def make_argument(
        self,