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62 lines
2.6 KiB
62 lines
2.6 KiB
4 years ago
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# Protocol Buffers - Google's data interchange format
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# Copyright 2008 Google Inc. All rights reserved.
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# https://developers.google.com/protocol-buffers/
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following disclaimer
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# in the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""Protocol message implementation hooks for C++ implementation.
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Contains helper functions used to create protocol message classes from
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Descriptor objects at runtime backed by the protocol buffer C++ API.
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"""
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__author__ = 'tibell@google.com (Johan Tibell)'
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from google.protobuf.pyext import _message
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from google.protobuf import message
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def NewMessage(bases, message_descriptor, dictionary):
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"""Creates a new protocol message *class*."""
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new_bases = []
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for base in bases:
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if base is message.Message:
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# _message.Message must come before message.Message as it
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# overrides methods in that class.
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new_bases.append(_message.Message)
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new_bases.append(base)
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return tuple(new_bases)
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def InitMessage(message_descriptor, cls):
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"""Constructs a new message instance (called before instance's __init__)."""
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def SubInit(self, **kwargs):
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super(cls, self).__init__(message_descriptor, **kwargs)
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cls.__init__ = SubInit
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cls.AddDescriptors(message_descriptor)
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