| # 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' |