| # Copyright (C) 2015 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. |
| |
| class ImmutableDict(dict): |
| def __setitem__(self, key, value): |
| raise RuntimeError("Cannot modify ImmutableDict") |
| |
| def __delitem__(self, key): |
| raise RuntimeError("Cannot modify ImmutableDict") |
| |
| def copyWith(self, key, value): |
| newDict = ImmutableDict(self) |
| dict.__setitem__(newDict, key, value) |
| return newDict |
