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on_error.py
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55 lines (43 loc) · 1.99 KB
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# Hydrogram - Telegram MTProto API Client Library for Python
# Copyright (C) 2023-present Hydrogram <https://hydrogram.org>
#
# This file is part of Hydrogram.
#
# Hydrogram is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Hydrogram 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 General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Hydrogram. If not, see <http://www.gnu.org/licenses/>.
from __future__ import annotations
from typing import Callable, TypeVar
import hydrogram
F = TypeVar("F", bound=Callable)
class OnError:
def on_error(
self: hydrogram.Client | type[Exception] | None = None, # type: ignore
errors: type[Exception] | list[type[Exception]] | None = None,
) -> Callable[[F], F]:
"""Decorator for handling new errors.
This does the same thing as :meth:`~hydrogram.Client.add_handler` using the
:obj:`~hydrogram.handlers.ErrorHandler`.
Parameters:
errors (:obj:`~Exception`, *optional*):
Pass one or more errors to allow only a subset of errors to be passed
in your function.
"""
def decorator(func: F) -> F:
if isinstance(self, hydrogram.Client):
self.add_handler(hydrogram.handlers.ErrorHandler(func, errors), 0)
elif (isinstance(self, type) and issubclass(self, Exception)) or self is None:
if not hasattr(func, "handlers"):
func.handlers = []
func.handlers.append((hydrogram.handlers.ErrorHandler(func, self), 0))
return func
return decorator