from collections.abc import Coroutine


class _ContextManager(Coroutine):

 __slots__ = ('_coro', '_obj')

 def __init__(self, coro):
 self._coro = coro
 self._obj = None

 def send(self, arg):
 return self._coro.send(arg) # pragma: no cover

 def throw(self, arg):
 return self._coro.throw(arg) # pragma: no cover

 def close(self):
 return self._coro.close() # pragma: no cover

 @property
 def gi_frame(self):
 return self._coro.gi_frame # pragma: no cover

 @property
 def gi_running(self):
 return self._coro.gi_running # pragma: no cover

 @property
 def gi_code(self):
 return self._coro.gi_code # pragma: no cover

 def __next__(self):
 return self.send(None) # pragma: no cover

 def __await__(self):
 return self._coro.__await__()

 async def __aenter__(self):
 self._obj = await self._coro
 return await self._obj.__aenter__()

 async def __aexit__(self, exc_type, exc, tb):
 await self._obj.__aexit__(exc_type, exc, tb)