52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
#!/usr/bin/env python
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# Copyright (c) 2016 Hewlett Packard Enterprise Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# This file is an adaptation of BytecodeAssembler:
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#
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# http://peak.telecommunity.com/DevCenter/BytecodeAssembler#toc
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#
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# It has been adapted to match the requirements of monasca_analytics
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"""Symbolic global constants, like 'None', 'NOT_FOUND', etc."""
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class Symbol(object):
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"""Symbolic global constant"""
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__slots__ = ['_name', '_module']
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__name__ = property(lambda self: self._name)
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__module__ = property(lambda self: self._module)
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def __init__(self, symbol, module_name):
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self.__class__._name.__set__(self, symbol)
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self.__class__._module.__set__(self, module_name)
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def __reduce__(self):
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return self._name
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def __setattr__(self, attr, val):
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raise TypeError("Symbols are immutable")
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def __repr__(self):
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return self.__name__
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__str__ = __repr__
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NOT_GIVEN = Symbol("NOT_GIVEN", __name__)
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NOT_FOUND = Symbol("NOT_FOUND", __name__)
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