mirror of
https://github.com/python-telegram-bot/python-telegram-bot.git
synced 2024-12-22 14:35:00 +01:00
90 lines
2.9 KiB
Python
90 lines
2.9 KiB
Python
#!/usr/bin/env python
|
|
#
|
|
# A library that provides a Python interface to the Telegram Bot API
|
|
# Copyright (C) 2015-2024
|
|
# Leandro Toledo de Souza <devs@python-telegram-bot.org>
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Lesser Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU Lesser Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser Public License
|
|
# along with this program. If not, see [http://www.gnu.org/licenses/].
|
|
"""This module contains helper functions related to enums.
|
|
|
|
Warning:
|
|
Contents of this module are intended to be used internally by the library and *not* by the
|
|
user. Changes to this module are not considered breaking changes and may not be documented in
|
|
the changelog.
|
|
"""
|
|
import enum as _enum
|
|
import sys
|
|
from typing import TypeVar, Union
|
|
|
|
_A = TypeVar("_A")
|
|
_B = TypeVar("_B")
|
|
_Enum = TypeVar("_Enum", bound=_enum.Enum)
|
|
|
|
|
|
def get_member(enum_cls: type[_Enum], value: _A, default: _B) -> Union[_Enum, _A, _B]:
|
|
"""Tries to call ``enum_cls(value)`` to convert the value into an enumeration member.
|
|
If that fails, the ``default`` is returned.
|
|
"""
|
|
try:
|
|
return enum_cls(value)
|
|
except ValueError:
|
|
return default
|
|
|
|
|
|
# Python 3.11 and above has a different output for mixin classes for IntEnum, StrEnum and IntFlag
|
|
# see https://docs.python.org/3.11/library/enum.html#notes. We want e.g. str(StrEnumTest.FOO) to
|
|
# return "foo" instead of "StrEnumTest.FOO", which is not the case < py3.11
|
|
class StringEnum(str, _enum.Enum):
|
|
"""Helper class for string enums where ``str(member)`` prints the value, but ``repr(member)``
|
|
gives ``EnumName.MEMBER_NAME``.
|
|
"""
|
|
|
|
__slots__ = ()
|
|
|
|
def __repr__(self) -> str:
|
|
return f"<{self.__class__.__name__}.{self.name}>"
|
|
|
|
def __str__(self) -> str:
|
|
return str.__str__(self)
|
|
|
|
|
|
# Apply the __repr__ modification and __str__ fix to IntEnum
|
|
class IntEnum(_enum.IntEnum): # pylint: disable=invalid-slots
|
|
"""Helper class for int enums where ``str(member)`` prints the value, but ``repr(member)``
|
|
gives ``EnumName.MEMBER_NAME``.
|
|
"""
|
|
|
|
__slots__ = ()
|
|
|
|
def __repr__(self) -> str:
|
|
return f"<{self.__class__.__name__}.{self.name}>"
|
|
|
|
if sys.version_info < (3, 11):
|
|
|
|
def __str__(self) -> str:
|
|
return str(self.value)
|
|
|
|
|
|
class FloatEnum(float, _enum.Enum):
|
|
"""Helper class for float enums where ``str(member)`` prints the value, but ``repr(member)``
|
|
gives ``EnumName.MEMBER_NAME``.
|
|
"""
|
|
|
|
__slots__ = ()
|
|
|
|
def __repr__(self) -> str:
|
|
return f"<{self.__class__.__name__}.{self.name}>"
|
|
|
|
def __str__(self) -> str:
|
|
return str(self.value)
|