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# Copyright (c) 2018 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 holding BitCountingGroup class."""
from RunGroup import RunGroup
class BitCountingGroup(RunGroup):
"""RunGroup with BitCountingMetadata.
Support with_run_added() method to simplify extending the group.
As bit content has to be re-counted, metadata factory is stored.
"""
def __init__(self, metadata_factory, values=[]):
"""Create the group from metadata factory and values.
:param metadata_factory: Factory object to create metadata with.
:param values: The runs belonging to this group.
:type metadata_factory: BitCountingMetadataFactory
:type values: Iterable of float or of AvgStdevMetadata
"""
self.metadata_factory = metadata_factory
metadata = metadata_factory.from_data(values)
super(BitCountingGroup, self).__init__(metadata, values)
def with_run_added(self, value):
"""Create and return a new group with one more run that self.
:param value: The run value to add to the group.
:type value: float or od AvgStdevMetadata
:returns: New group with the run added.
:rtype: BitCountingGroup
"""
values = list(self.values)
values.append(value)
return BitCountingGroup(self.metadata_factory, values)
# TODO: Is there a good way to save some computation
# by copy&updating the metadata incrementally?
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