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bazarr/libs/sqlalchemy/util/concurrency.py

74 lines
2.4 KiB

# util/concurrency.py
# Copyright (C) 2005-2024 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: https://www.opensource.org/licenses/mit-license.php
# mypy: allow-untyped-defs, allow-untyped-calls
from __future__ import annotations
import asyncio # noqa
import typing
have_greenlet = False
greenlet_error = None
try:
import greenlet # type: ignore # noqa: F401
except ImportError as e:
greenlet_error = str(e)
pass
else:
have_greenlet = True
from ._concurrency_py3k import await_only as await_only
from ._concurrency_py3k import await_fallback as await_fallback
from ._concurrency_py3k import in_greenlet as in_greenlet
from ._concurrency_py3k import greenlet_spawn as greenlet_spawn
from ._concurrency_py3k import is_exit_exception as is_exit_exception
from ._concurrency_py3k import AsyncAdaptedLock as AsyncAdaptedLock
from ._concurrency_py3k import (
_util_async_run as _util_async_run,
) # noqa: F401
from ._concurrency_py3k import (
_util_async_run_coroutine_function as _util_async_run_coroutine_function, # noqa: F401, E501
)
if not typing.TYPE_CHECKING and not have_greenlet:
def _not_implemented():
# this conditional is to prevent pylance from considering
# greenlet_spawn() etc as "no return" and dimming out code below it
if have_greenlet:
return None
raise ValueError(
"the greenlet library is required to use this function."
" %s" % greenlet_error
if greenlet_error
else ""
)
def is_exit_exception(e): # noqa: F811
return not isinstance(e, Exception)
def await_only(thing): # type: ignore # noqa: F811
_not_implemented()
def await_fallback(thing): # type: ignore # noqa: F811
return thing
def in_greenlet(): # type: ignore # noqa: F811
_not_implemented()
def greenlet_spawn(fn, *args, **kw): # type: ignore # noqa: F811
_not_implemented()
def AsyncAdaptedLock(*args, **kw): # type: ignore # noqa: F811
_not_implemented()
def _util_async_run(fn, *arg, **kw): # type: ignore # noqa: F811
return fn(*arg, **kw)
def _util_async_run_coroutine_function(fn, *arg, **kw): # type: ignore # noqa: F811,E501
_not_implemented()