blob: 6b94a22948ec2396a8eae0e170c96cc43c34d4d3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
# util/concurrency.py
# Copyright (C) 2005-2022 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
import asyncio # noqa
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 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 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 F81
return thing
def greenlet_spawn(fn, *args, **kw): # type: ignore # noqa F81
_not_implemented()
def AsyncAdaptedLock(*args, **kw): # type: ignore # noqa F81
_not_implemented()
def _util_async_run(fn, *arg, **kw): # type: ignore # noqa F81
return fn(*arg, **kw)
def _util_async_run_coroutine_function(fn, *arg, **kw): # type: ignore # noqa F81
_not_implemented()
|
