| #!/usr/bin/env python3 |
| # |
| # Copyright 2019 - The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| from abc import ABC, abstractmethod |
| |
| |
| class Closable(ABC): |
| |
| def __enter__(self): |
| return self |
| |
| def __exit__(self, type, value, traceback): |
| self.close() |
| return traceback is None |
| |
| def __del__(self): |
| self.close() |
| |
| @abstractmethod |
| def close(self): |
| pass |
| |
| |
| def safeClose(closable): |
| if closable is not None: |
| closable.close() |
