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Diffstat (limited to 'generator/google/protobuf/pyext/cpp_message.py')
| -rw-r--r-- | generator/google/protobuf/pyext/cpp_message.py | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/generator/google/protobuf/pyext/cpp_message.py b/generator/google/protobuf/pyext/cpp_message.py new file mode 100644 index 0000000..fc8eb32 --- /dev/null +++ b/generator/google/protobuf/pyext/cpp_message.py @@ -0,0 +1,65 @@ +# 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.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' |