# typelib.py - type hint aliases and support

#

# Copyright 2022 Matt Harbison <matt_harbison@yahoo.com>

#

# This software may be used and distributed according to the terms of the

# GNU General Public License version 2 or any later version.

import typing

# Note: this is slightly different from pycompat.TYPE_CHECKING, as using

# pycompat causes the BinaryIO_Proxy type to be resolved to ``object`` when

# used as the base class during a pytype run.

TYPE_CHECKING = typing.TYPE_CHECKING

# The BinaryIO class provides empty methods, which at runtime means that

# ``__getattr__`` on the proxy classes won't get called for the methods that

# should delegate to the internal object.  So to avoid runtime changes because

# of the required typing inheritance, just use BinaryIO when typechecking, and

# ``object`` otherwise.

if TYPE_CHECKING:

    from typing import (

        BinaryIO,

    )

    BinaryIO_Proxy = BinaryIO

else:

    BinaryIO_Proxy = object