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Diffstat (limited to 'resources/libraries/python/model/util.py')
-rw-r--r-- | resources/libraries/python/model/util.py | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/resources/libraries/python/model/util.py b/resources/libraries/python/model/util.py new file mode 100644 index 0000000000..879f1f28b1 --- /dev/null +++ b/resources/libraries/python/model/util.py @@ -0,0 +1,69 @@ +# Copyright (c) 2021 Cisco and/or its affiliates. +# 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. + +"""Module hosting few utility functions useful when dealing with modelled data. + +This is for storing varied utility functions, which are too short and diverse +to be put into more descriptive modules. +""" + + +from robot.libraries.BuiltIn import BuiltIn + + +def descend(parent_node, key, default_factory=None): + """Return a sub-node, create and insert it when it does not exist. + + Without this function: + child_node = parent_node.get(key, dict()) + parent_node[key] = child_node + + With this function: + child_node = descend(parent_node, key) + + New code is shorter and avoids the need to type key and parent_node twice. + + :param parent_node: Reference to inner node of a larger structure + we want to descend from. + :param key: Key of the maybe existing child node. + :param default_factory: If the key does not exist, call this + to create a new value to be inserted under the key. + None means dict. The other popular option is list. + :type parent_node: dict + :type key: str + :type default_factory: Optional[Callable[[], object]] + :returns: The reference to (maybe just created) child node. + :rtype: object + """ + if key not in parent_node: + factory = dict if default_factory is None else default_factory + parent_node[key] = factory() + return parent_node[key] + + +def get_export_data(): + """Return raw_data member of export_json library instance. + + This assumes the data has been initialized already. + Return None if Robot is not running. + + :returns: Current library instance's raw data field. + :rtype: Optional[dict] + :raises AttributeError: If library is not imported yet. + """ + instance = BuiltIn().get_library_instance( + u"resources.libraries.python.model.export_json" + ) + if instance is None: + return None + return instance.raw_data |