diff options
| -rw-r--r-- | tools/checker/common/immutables.py | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tools/checker/common/immutables.py b/tools/checker/common/immutables.py new file mode 100644 index 0000000000..e016867c23 --- /dev/null +++ b/tools/checker/common/immutables.py @@ -0,0 +1,25 @@ +# 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 |