36 lines
935 B
Python
36 lines
935 B
Python
# SPDX-License-Identifier: AGPL-3.0-only
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import anyio
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import contextlib
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from functools import wraps
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from datetime import datetime, timezone
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def as_corofunc(f):
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@wraps(f)
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async def wrapped(*args, **kwargs):
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# can't decide if i want an `anyio.sleep(0)` here.
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return f(*args, **kwargs)
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return wrapped
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def as_async_cm(cls):
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@wraps(cls, updated=()) # cls.__dict__ doesn't support .update()
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class wrapped(cls, contextlib.AbstractAsyncContextManager):
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__aenter__ = as_corofunc(cls.__enter__)
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__aexit__ = as_corofunc(cls.__exit__)
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return wrapped
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suppress = as_async_cm(contextlib.suppress)
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def shield(f):
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@wraps(f)
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async def shielded(*args, **kwargs):
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with anyio.CancelScope(shield=True):
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return await f(*args, **kwargs)
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return shielded
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def removeprefix(s, prefix):
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try:
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return s.removeprefix(prefix)
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except AttributeError:
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# compatibility for pre-3.9
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return s[len(prefix):] if s.startswith(prefix) else s
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