blob: 3a29ce3c0d2b482a2af20cb333d5e3fd3e7c20f1 [file] [log] [blame]
# 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 copy_with(self, key, value):
new_dict = ImmutableDict(self)
dict.__setitem__(new_dict, key, value)
return new_dict