73 lines
3.0 KiB
Python
73 lines
3.0 KiB
Python
![]() |
# Protocol Buffers - Google's data interchange format
|
||
|
# Copyright 2008 Google Inc. All rights reserved.
|
||
|
# https://developers.google.com/protocol-buffers/
|
||
|
#
|
||
|
# Redistribution and use in source and binary forms, with or without
|
||
|
# modification, are permitted provided that the following conditions are
|
||
|
# met:
|
||
|
#
|
||
|
# * Redistributions of source code must retain the above copyright
|
||
|
# notice, this list of conditions and the following disclaimer.
|
||
|
# * Redistributions in binary form must reproduce the above
|
||
|
# copyright notice, this list of conditions and the following disclaimer
|
||
|
# in the documentation and/or other materials provided with the
|
||
|
# distribution.
|
||
|
# * Neither the name of Google Inc. nor the names of its
|
||
|
# contributors may be used to endorse or promote products derived from
|
||
|
# this software without specific prior written permission.
|
||
|
#
|
||
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||
|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||
|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||
|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||
|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||
|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||
|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||
|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
||
|
"""Protocol message implementation hooks for C++ implementation.
|
||
|
|
||
|
Contains helper functions used to create protocol message classes from
|
||
|
Descriptor objects at runtime backed by the protocol buffer C++ API.
|
||
|
"""
|
||
|
|
||
|
__author__ = 'tibell@google.com (Johan Tibell)'
|
||
|
|
||
|
from google.protobuf.internal import api_implementation
|
||
|
|
||
|
|
||
|
# pylint: disable=protected-access
|
||
|
_message = api_implementation._c_module
|
||
|
# TODO(jieluo): Remove this import after fix api_implementation
|
||
|
if _message is None:
|
||
|
from google.protobuf.pyext import _message
|
||
|
|
||
|
|
||
|
class GeneratedProtocolMessageType(_message.MessageMeta):
|
||
|
|
||
|
"""Metaclass for protocol message classes created at runtime from Descriptors.
|
||
|
|
||
|
The protocol compiler currently uses this metaclass to create protocol
|
||
|
message classes at runtime. Clients can also manually create their own
|
||
|
classes at runtime, as in this example:
|
||
|
|
||
|
mydescriptor = Descriptor(.....)
|
||
|
factory = symbol_database.Default()
|
||
|
factory.pool.AddDescriptor(mydescriptor)
|
||
|
MyProtoClass = factory.GetPrototype(mydescriptor)
|
||
|
myproto_instance = MyProtoClass()
|
||
|
myproto.foo_field = 23
|
||
|
...
|
||
|
|
||
|
The above example will not work for nested types. If you wish to include them,
|
||
|
use reflection.MakeClass() instead of manually instantiating the class in
|
||
|
order to create the appropriate class structure.
|
||
|
"""
|
||
|
|
||
|
# Must be consistent with the protocol-compiler code in
|
||
|
# proto2/compiler/internal/generator.*.
|
||
|
_DESCRIPTOR_KEY = 'DESCRIPTOR'
|