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# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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 copy import deepcopy
def deepcopy_with_locators(value):
"""
Like :func:`deepcopy`, but also copies over locators.
"""
res = deepcopy(value)
copy_locators(res, value)
return res
def copy_locators(target, source):
"""
Copies over ``_locator`` for all elements, recursively.
Assumes that target and source have exactly the same list/dict structure.
"""
locator = getattr(source, '_locator', None)
if locator is not None:
try:
setattr(target, '_locator', locator)
except AttributeError:
pass
if isinstance(target, list) and isinstance(source, list):
for i, _ in enumerate(target):
copy_locators(target[i], source[i])
elif isinstance(target, dict) and isinstance(source, dict):
for k, v in target.items():
copy_locators(v, source[k])
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