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Diffstat (limited to 'synapse/util/frozenutils.py')
-rw-r--r-- | synapse/util/frozenutils.py | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/synapse/util/frozenutils.py b/synapse/util/frozenutils.py new file mode 100644 index 0000000000..46d3ab4f7d --- /dev/null +++ b/synapse/util/frozenutils.py @@ -0,0 +1,56 @@ +# -*- coding: utf-8 -*- +# Copyright 2014 OpenMarket Ltd +# +# 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 frozendict import frozendict + +import json + + +def freeze(o): + if isinstance(o, dict) or isinstance(o, frozendict): + return frozendict({k: freeze(v) for k, v in o.items()}) + + if isinstance(o, basestring): + return o + + try: + return tuple([freeze(i) for i in o]) + except TypeError: + pass + + return o + + +def unfreeze(o): + if isinstance(o, frozendict) or isinstance(o, dict): + return dict({k: unfreeze(v) for k, v in o.items()}) + + if isinstance(o, basestring): + return o + + try: + return [unfreeze(i) for i in o] + except TypeError: + pass + + return o + + +class FrozenEncoder(json.JSONEncoder): + def default(self, o): + if isinstance(o, frozendict): + return dict(o) + + return json.JSONEncoder(self, o) \ No newline at end of file |