Python google.protobuf.reflection.GeneratedProtocolMessageType() Examples

def testParsingFlatClassWithExplicitClassDeclaration(self):
    """Test that the generated class can parse a flat message."""
    # TODO(xiaofeng): This test fails with cpp implemetnation in the call
    # of six.with_metaclass(). The other two callsites of with_metaclass
    # in this file are both excluded from cpp test, so it might be expected
    # to fail. Need someone more familiar with the python code to take a
    # look at this.
    if api_implementation.Type() != 'python':
      return
    file_descriptor = descriptor_pb2.FileDescriptorProto()
    file_descriptor.ParseFromString(self._GetSerializedFileDescriptor('A'))
    msg_descriptor = descriptor.MakeDescriptor(
        file_descriptor.message_type[0])

    class MessageClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = msg_descriptor
    msg = MessageClass()
    msg_str = (
        'flat: 0 '
        'flat: 1 '
        'flat: 2 ')
    text_format.Merge(msg_str, msg)
    self.assertEqual(msg.flat, [0, 1, 2]) 

def testParsingFlatClassWithExplicitClassDeclaration(self):
    """Test that the generated class can parse a flat message."""
    # TODO(xiaofeng): This test fails with cpp implemetnation in the call
    # of six.with_metaclass(). The other two callsites of with_metaclass
    # in this file are both excluded from cpp test, so it might be expected
    # to fail. Need someone more familiar with the python code to take a
    # look at this.
    if api_implementation.Type() != 'python':
      return
    file_descriptor = descriptor_pb2.FileDescriptorProto()
    file_descriptor.ParseFromString(self._GetSerializedFileDescriptor('A'))
    msg_descriptor = descriptor.MakeDescriptor(
        file_descriptor.message_type[0])

    class MessageClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = msg_descriptor
    msg = MessageClass()
    msg_str = (
        'flat: 0 '
        'flat: 1 '
        'flat: 2 ')
    text_format.Merge(msg_str, msg)
    self.assertEqual(msg.flat, [0, 1, 2]) 

def testParsingFlatClassWithExplicitClassDeclaration(self):
    """Test that the generated class can parse a flat message."""
    # TODO(xiaofeng): This test fails with cpp implemetnation in the call
    # of six.with_metaclass(). The other two callsites of with_metaclass
    # in this file are both excluded from cpp test, so it might be expected
    # to fail. Need someone more familiar with the python code to take a
    # look at this.
    if api_implementation.Type() != 'python':
      return
    file_descriptor = descriptor_pb2.FileDescriptorProto()
    file_descriptor.ParseFromString(self._GetSerializedFileDescriptor('A'))
    msg_descriptor = descriptor.MakeDescriptor(
        file_descriptor.message_type[0])

    class MessageClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = msg_descriptor
    msg = MessageClass()
    msg_str = (
        'flat: 0 '
        'flat: 1 '
        'flat: 2 ')
    text_format.Merge(msg_str, msg)
    self.assertEqual(msg.flat, [0, 1, 2]) 

def testParsingFlatClassWithExplicitClassDeclaration(self):
    """Test that the generated class can parse a flat message."""
    # TODO(xiaofeng): This test fails with cpp implemetnation in the call
    # of six.with_metaclass(). The other two callsites of with_metaclass
    # in this file are both excluded from cpp test, so it might be expected
    # to fail. Need someone more familiar with the python code to take a
    # look at this.
    if api_implementation.Type() != 'python':
      return
    file_descriptor = descriptor_pb2.FileDescriptorProto()
    file_descriptor.ParseFromString(self._GetSerializedFileDescriptor('A'))
    msg_descriptor = descriptor.MakeDescriptor(
        file_descriptor.message_type[0])

    class MessageClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = msg_descriptor
    msg = MessageClass()
    msg_str = (
        'flat: 0 '
        'flat: 1 '
        'flat: 2 ')
    text_format.Merge(msg_str, msg)
    self.assertEqual(msg.flat, [0, 1, 2]) 

def testParsingFlatClassWithExplicitClassDeclaration(self):
    """Test that the generated class can parse a flat message."""
    file_descriptor = descriptor_pb2.FileDescriptorProto()
    file_descriptor.ParseFromString(self._GetSerializedFileDescriptor('A'))
    msg_descriptor = descriptor.MakeDescriptor(
        file_descriptor.message_type[0])

    class MessageClass(message.Message, metaclass=reflection.GeneratedProtocolMessageType):
      DESCRIPTOR = msg_descriptor
    msg = MessageClass()
    msg_str = (
        'flat: 0 '
        'flat: 1 '
        'flat: 2 ')
    text_format.Merge(msg_str, msg)
    self.assertEqual(msg.flat, [0, 1, 2]) 

def testParsingFlatClassWithExplicitClassDeclaration(self):
    """Test that the generated class can parse a flat message."""
    # TODO(xiaofeng): This test fails with cpp implemetnation in the call
    # of six.with_metaclass(). The other two callsites of with_metaclass
    # in this file are both excluded from cpp test, so it might be expected
    # to fail. Need someone more familiar with the python code to take a
    # look at this.
    if api_implementation.Type() != 'python':
      return
    file_descriptor = descriptor_pb2.FileDescriptorProto()
    file_descriptor.ParseFromString(self._GetSerializedFileDescriptor('A'))
    msg_descriptor = descriptor.MakeDescriptor(
        file_descriptor.message_type[0])

    class MessageClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = msg_descriptor
    msg = MessageClass()
    msg_str = (
        'flat: 0 '
        'flat: 1 '
        'flat: 2 ')
    text_format.Merge(msg_str, msg)
    self.assertEqual(msg.flat, [0, 1, 2]) 

def testParsingFlatClassWithExplicitClassDeclaration(self):
    """Test that the generated class can parse a flat message."""
    # TODO(xiaofeng): This test fails with cpp implemetnation in the call
    # of six.with_metaclass(). The other two callsites of with_metaclass
    # in this file are both excluded from cpp test, so it might be expected
    # to fail. Need someone more familiar with the python code to take a
    # look at this.
    if api_implementation.Type() != 'python':
      return
    file_descriptor = descriptor_pb2.FileDescriptorProto()
    file_descriptor.ParseFromString(self._GetSerializedFileDescriptor('A'))
    msg_descriptor = descriptor.MakeDescriptor(
        file_descriptor.message_type[0])

    class MessageClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = msg_descriptor
    msg = MessageClass()
    msg_str = (
        'flat: 0 '
        'flat: 1 '
        'flat: 2 ')
    text_format.Merge(msg_str, msg)
    self.assertEqual(msg.flat, [0, 1, 2]) 

def testParsingFlatClassWithExplicitClassDeclaration(self):
    """Test that the generated class can parse a flat message."""
    # TODO(xiaofeng): This test fails with cpp implemetnation in the call
    # of six.with_metaclass(). The other two callsites of with_metaclass
    # in this file are both excluded from cpp test, so it might be expected
    # to fail. Need someone more familiar with the python code to take a
    # look at this.
    if api_implementation.Type() != 'python':
      return
    file_descriptor = descriptor_pb2.FileDescriptorProto()
    file_descriptor.ParseFromString(self._GetSerializedFileDescriptor('A'))
    msg_descriptor = descriptor.MakeDescriptor(
        file_descriptor.message_type[0])

    class MessageClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = msg_descriptor
    msg = MessageClass()
    msg_str = (
        'flat: 0 '
        'flat: 1 '
        'flat: 2 ')
    text_format.Merge(msg_str, msg)
    self.assertEqual(msg.flat, [0, 1, 2]) 

def GetPrototype(self, descriptor):
    """Builds a proto2 message class based on the passed in descriptor.

    Passing a descriptor with a fully qualified name matching a previous
    invocation will cause the same class to be returned.

    Args:
      descriptor: The descriptor to build from.

    Returns:
      A class describing the passed in descriptor.
    """
    if descriptor not in self._classes:
      descriptor_name = descriptor.name
      if str is bytes:  # PY2
        descriptor_name = descriptor.name.encode('ascii', 'ignore')
      result_class = reflection.GeneratedProtocolMessageType(
          descriptor_name,
          (message.Message,),
          {'DESCRIPTOR': descriptor, '__module__': None})
          # If module not set, it wrongly points to the reflection.py module.
      self._classes[descriptor] = result_class
      for field in descriptor.fields:
        if field.message_type:
          self.GetPrototype(field.message_type)
      for extension in result_class.DESCRIPTOR.extensions:
        if extension.containing_type not in self._classes:
          self.GetPrototype(extension.containing_type)
        extended_class = self._classes[extension.containing_type]
        extended_class.RegisterExtension(extension)
    return self._classes[descriptor] 

def testHandWrittenReflection(self):
    # Hand written extensions are only supported by the pure-Python
    # implementation of the API.
    if api_implementation.Type() != 'python':
      return

    FieldDescriptor = descriptor.FieldDescriptor
    foo_field_descriptor = FieldDescriptor(
        name='foo_field', full_name='MyProto.foo_field',
        index=0, number=1, type=FieldDescriptor.TYPE_INT64,
        cpp_type=FieldDescriptor.CPPTYPE_INT64,
        label=FieldDescriptor.LABEL_OPTIONAL, default_value=0,
        containing_type=None, message_type=None, enum_type=None,
        is_extension=False, extension_scope=None,
        options=descriptor_pb2.FieldOptions())
    mydescriptor = descriptor.Descriptor(
        name='MyProto', full_name='MyProto', filename='ignored',
        containing_type=None, nested_types=[], enum_types=[],
        fields=[foo_field_descriptor], extensions=[],
        options=descriptor_pb2.MessageOptions())
    class MyProtoClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = mydescriptor
    myproto_instance = MyProtoClass()
    self.assertEqual(0, myproto_instance.foo_field)
    self.assertTrue(not myproto_instance.HasField('foo_field'))
    myproto_instance.foo_field = 23
    self.assertEqual(23, myproto_instance.foo_field)
    self.assertTrue(myproto_instance.HasField('foo_field')) 

def GetPrototype(self, descriptor):
    """Builds a proto2 message class based on the passed in descriptor.

    Passing a descriptor with a fully qualified name matching a previous
    invocation will cause the same class to be returned.

    Args:
      descriptor: The descriptor to build from.

    Returns:
      A class describing the passed in descriptor.
    """
    if descriptor.full_name not in self._classes:
      descriptor_name = descriptor.name
      if str is bytes:  # PY2
        descriptor_name = descriptor.name.encode('ascii', 'ignore')
      result_class = reflection.GeneratedProtocolMessageType(
          descriptor_name,
          (message.Message,),
          {'DESCRIPTOR': descriptor, '__module__': None})
          # If module not set, it wrongly points to the reflection.py module.
      self._classes[descriptor.full_name] = result_class
      for field in descriptor.fields:
        if field.message_type:
          self.GetPrototype(field.message_type)
      for extension in result_class.DESCRIPTOR.extensions:
        if extension.containing_type.full_name not in self._classes:
          self.GetPrototype(extension.containing_type)
        extended_class = self._classes[extension.containing_type.full_name]
        extended_class.RegisterExtension(extension)
    return self._classes[descriptor.full_name] 

def testHandWrittenReflection(self):
    # Hand written extensions are only supported by the pure-Python
    # implementation of the API.
    if api_implementation.Type() != 'python':
      return

    FieldDescriptor = descriptor.FieldDescriptor
    foo_field_descriptor = FieldDescriptor(
        name='foo_field', full_name='MyProto.foo_field',
        index=0, number=1, type=FieldDescriptor.TYPE_INT64,
        cpp_type=FieldDescriptor.CPPTYPE_INT64,
        label=FieldDescriptor.LABEL_OPTIONAL, default_value=0,
        containing_type=None, message_type=None, enum_type=None,
        is_extension=False, extension_scope=None,
        options=descriptor_pb2.FieldOptions())
    mydescriptor = descriptor.Descriptor(
        name='MyProto', full_name='MyProto', filename='ignored',
        containing_type=None, nested_types=[], enum_types=[],
        fields=[foo_field_descriptor], extensions=[],
        options=descriptor_pb2.MessageOptions())
    class MyProtoClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = mydescriptor
    myproto_instance = MyProtoClass()
    self.assertEqual(0, myproto_instance.foo_field)
    self.assertTrue(not myproto_instance.HasField('foo_field'))
    myproto_instance.foo_field = 23
    self.assertEqual(23, myproto_instance.foo_field)
    self.assertTrue(myproto_instance.HasField('foo_field')) 

def GetPrototype(self, descriptor):
    """Builds a proto2 message class based on the passed in descriptor.

    Passing a descriptor with a fully qualified name matching a previous
    invocation will cause the same class to be returned.

    Args:
      descriptor: The descriptor to build from.

    Returns:
      A class describing the passed in descriptor.
    """
    if descriptor.full_name not in self._classes:
      descriptor_name = descriptor.name
      if str is bytes:  # PY2
        descriptor_name = descriptor.name.encode('ascii', 'ignore')
      result_class = reflection.GeneratedProtocolMessageType(
          descriptor_name,
          (message.Message,),
          {'DESCRIPTOR': descriptor, '__module__': None})
          # If module not set, it wrongly points to the reflection.py module.
      self._classes[descriptor.full_name] = result_class
      for field in descriptor.fields:
        if field.message_type:
          self.GetPrototype(field.message_type)
      for extension in result_class.DESCRIPTOR.extensions:
        if extension.containing_type.full_name not in self._classes:
          self.GetPrototype(extension.containing_type)
        extended_class = self._classes[extension.containing_type.full_name]
        extended_class.RegisterExtension(extension)
    return self._classes[descriptor.full_name] 

def testHandWrittenReflection(self):
    # Hand written extensions are only supported by the pure-Python
    # implementation of the API.
    if api_implementation.Type() != 'python':
      return

    FieldDescriptor = descriptor.FieldDescriptor
    foo_field_descriptor = FieldDescriptor(
        name='foo_field', full_name='MyProto.foo_field',
        index=0, number=1, type=FieldDescriptor.TYPE_INT64,
        cpp_type=FieldDescriptor.CPPTYPE_INT64,
        label=FieldDescriptor.LABEL_OPTIONAL, default_value=0,
        containing_type=None, message_type=None, enum_type=None,
        is_extension=False, extension_scope=None,
        options=descriptor_pb2.FieldOptions())
    mydescriptor = descriptor.Descriptor(
        name='MyProto', full_name='MyProto', filename='ignored',
        containing_type=None, nested_types=[], enum_types=[],
        fields=[foo_field_descriptor], extensions=[],
        options=descriptor_pb2.MessageOptions())
    class MyProtoClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = mydescriptor
    myproto_instance = MyProtoClass()
    self.assertEqual(0, myproto_instance.foo_field)
    self.assertTrue(not myproto_instance.HasField('foo_field'))
    myproto_instance.foo_field = 23
    self.assertEqual(23, myproto_instance.foo_field)
    self.assertTrue(myproto_instance.HasField('foo_field')) 

def GetPrototype(self, descriptor):
    """Builds a proto2 message class based on the passed in descriptor.

    Passing a descriptor with a fully qualified name matching a previous
    invocation will cause the same class to be returned.

    Args:
      descriptor: The descriptor to build from.

    Returns:
      A class describing the passed in descriptor.
    """
    if descriptor.full_name not in self._classes:
      descriptor_name = descriptor.name
      if sys.version_info[0] < 3:  ##PY25
##!PY25      if str is bytes:  # PY2
        descriptor_name = descriptor.name.encode('ascii', 'ignore')
      result_class = reflection.GeneratedProtocolMessageType(
          descriptor_name,
          (message.Message,),
          {'DESCRIPTOR': descriptor, '__module__': None})
          # If module not set, it wrongly points to the reflection.py module.
      self._classes[descriptor.full_name] = result_class
      for field in descriptor.fields:
        if field.message_type:
          self.GetPrototype(field.message_type)
      for extension in result_class.DESCRIPTOR.extensions:
        if extension.containing_type.full_name not in self._classes:
          self.GetPrototype(extension.containing_type)
        extended_class = self._classes[extension.containing_type.full_name]
        extended_class.RegisterExtension(extension)
    return self._classes[descriptor.full_name] 

def testHandWrittenReflection(self):
    # Hand written extensions are only supported by the pure-Python
    # implementation of the API.
    if api_implementation.Type() != 'python':
      return

    FieldDescriptor = descriptor.FieldDescriptor
    foo_field_descriptor = FieldDescriptor(
        name='foo_field', full_name='MyProto.foo_field',
        index=0, number=1, type=FieldDescriptor.TYPE_INT64,
        cpp_type=FieldDescriptor.CPPTYPE_INT64,
        label=FieldDescriptor.LABEL_OPTIONAL, default_value=0,
        containing_type=None, message_type=None, enum_type=None,
        is_extension=False, extension_scope=None,
        options=descriptor_pb2.FieldOptions())
    mydescriptor = descriptor.Descriptor(
        name='MyProto', full_name='MyProto', filename='ignored',
        containing_type=None, nested_types=[], enum_types=[],
        fields=[foo_field_descriptor], extensions=[],
        options=descriptor_pb2.MessageOptions())
    class MyProtoClass(message.Message, metaclass=reflection.GeneratedProtocolMessageType):
      DESCRIPTOR = mydescriptor
    myproto_instance = MyProtoClass()
    self.assertEqual(0, myproto_instance.foo_field)
    self.assertTrue(not myproto_instance.HasField('foo_field'))
    myproto_instance.foo_field = 23
    self.assertEqual(23, myproto_instance.foo_field)
    self.assertTrue(myproto_instance.HasField('foo_field')) 

def GetPrototype(self, descriptor):
    """Builds a proto2 message class based on the passed in descriptor.

    Passing a descriptor with a fully qualified name matching a previous
    invocation will cause the same class to be returned.

    Args:
      descriptor: The descriptor to build from.

    Returns:
      A class describing the passed in descriptor.
    """
    if descriptor.full_name not in self._classes:
      descriptor_name = descriptor.name
      if str is bytes:  # PY2
        descriptor_name = descriptor.name.encode('ascii', 'ignore')
      result_class = reflection.GeneratedProtocolMessageType(
          descriptor_name,
          (message.Message,),
          {'DESCRIPTOR': descriptor, '__module__': None})
          # If module not set, it wrongly points to the reflection.py module.
      self._classes[descriptor.full_name] = result_class
      for field in descriptor.fields:
        if field.message_type:
          self.GetPrototype(field.message_type)
      for extension in result_class.DESCRIPTOR.extensions:
        if extension.containing_type.full_name not in self._classes:
          self.GetPrototype(extension.containing_type)
        extended_class = self._classes[extension.containing_type.full_name]
        extended_class.RegisterExtension(extension)
    return self._classes[descriptor.full_name] 

def testHandWrittenReflection(self):
    # Hand written extensions are only supported by the pure-Python
    # implementation of the API.
    if api_implementation.Type() != 'python':
      return

    FieldDescriptor = descriptor.FieldDescriptor
    foo_field_descriptor = FieldDescriptor(
        name='foo_field', full_name='MyProto.foo_field',
        index=0, number=1, type=FieldDescriptor.TYPE_INT64,
        cpp_type=FieldDescriptor.CPPTYPE_INT64,
        label=FieldDescriptor.LABEL_OPTIONAL, default_value=0,
        containing_type=None, message_type=None, enum_type=None,
        is_extension=False, extension_scope=None,
        options=descriptor_pb2.FieldOptions())
    mydescriptor = descriptor.Descriptor(
        name='MyProto', full_name='MyProto', filename='ignored',
        containing_type=None, nested_types=[], enum_types=[],
        fields=[foo_field_descriptor], extensions=[],
        options=descriptor_pb2.MessageOptions())
    class MyProtoClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = mydescriptor
    myproto_instance = MyProtoClass()
    self.assertEqual(0, myproto_instance.foo_field)
    self.assertTrue(not myproto_instance.HasField('foo_field'))
    myproto_instance.foo_field = 23
    self.assertEqual(23, myproto_instance.foo_field)
    self.assertTrue(myproto_instance.HasField('foo_field')) 

def GetPrototype(self, descriptor):
    """Builds a proto2 message class based on the passed in descriptor.

    Passing a descriptor with a fully qualified name matching a previous
    invocation will cause the same class to be returned.

    Args:
      descriptor: The descriptor to build from.

    Returns:
      A class describing the passed in descriptor.
    """
    if descriptor.full_name not in self._classes:
      descriptor_name = descriptor.name
      if str is bytes:  # PY2
        descriptor_name = descriptor.name.encode('ascii', 'ignore')
      result_class = reflection.GeneratedProtocolMessageType(
          descriptor_name,
          (message.Message,),
          {'DESCRIPTOR': descriptor, '__module__': None})
          # If module not set, it wrongly points to the reflection.py module.
      self._classes[descriptor.full_name] = result_class
      for field in descriptor.fields:
        if field.message_type:
          self.GetPrototype(field.message_type)
      for extension in result_class.DESCRIPTOR.extensions:
        if extension.containing_type.full_name not in self._classes:
          self.GetPrototype(extension.containing_type)
        extended_class = self._classes[extension.containing_type.full_name]
        extended_class.RegisterExtension(extension)
    return self._classes[descriptor.full_name] 

def testHandWrittenReflection(self):
    # Hand written extensions are only supported by the pure-Python
    # implementation of the API.
    if api_implementation.Type() != 'python':
      return

    FieldDescriptor = descriptor.FieldDescriptor
    foo_field_descriptor = FieldDescriptor(
        name='foo_field', full_name='MyProto.foo_field',
        index=0, number=1, type=FieldDescriptor.TYPE_INT64,
        cpp_type=FieldDescriptor.CPPTYPE_INT64,
        label=FieldDescriptor.LABEL_OPTIONAL, default_value=0,
        containing_type=None, message_type=None, enum_type=None,
        is_extension=False, extension_scope=None,
        options=descriptor_pb2.FieldOptions())
    mydescriptor = descriptor.Descriptor(
        name='MyProto', full_name='MyProto', filename='ignored',
        containing_type=None, nested_types=[], enum_types=[],
        fields=[foo_field_descriptor], extensions=[],
        options=descriptor_pb2.MessageOptions())
    class MyProtoClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = mydescriptor
    myproto_instance = MyProtoClass()
    self.assertEqual(0, myproto_instance.foo_field)
    self.assertTrue(not myproto_instance.HasField('foo_field'))
    myproto_instance.foo_field = 23
    self.assertEqual(23, myproto_instance.foo_field)
    self.assertTrue(myproto_instance.HasField('foo_field')) 

def create_protobuf(pb_type):
    """
    :param T pb_type:
    :rtype: ProtobufType
    """
    if not isinstance(pb_type, _proto_reflection.GeneratedProtocolMessageType):
        raise _user_exceptions.FlyteTypeException(
            expected_type=_proto_reflection.GeneratedProtocolMessageType,
            received_type=type(pb_type),
            received_value=pb_type
        )

    class _Protobuf(Protobuf):
        _pb_type = pb_type
    return _Protobuf 

def pb_type(cls):
        """
        :rtype: GeneratedProtocolMessageType
        """
        return cls._pb_type 

def __init__(self, sends=None, receives=None, errors=None):
        assert(sends or receives)
        if sends:
            assert(isinstance(sends, GeneratedProtocolMessageType))
        if receives:
            assert(isinstance(receives, GeneratedProtocolMessageType))
        if errors:
            assert(isinstance(errors, GeneratedProtocolMessageType))

        self.send_type = sends
        self.receive_type = receives
        self.error_type = errors 

def GetPrototype(self, descriptor):
    """Builds a proto2 message class based on the passed in descriptor.

    Passing a descriptor with a fully qualified name matching a previous
    invocation will cause the same class to be returned.

    Args:
      descriptor: The descriptor to build from.

    Returns:
      A class describing the passed in descriptor.
    """
    if descriptor not in self._classes:
      descriptor_name = descriptor.name
      if str is bytes:  # PY2
        descriptor_name = descriptor.name.encode('ascii', 'ignore')
      result_class = reflection.GeneratedProtocolMessageType(
          descriptor_name,
          (message.Message,),
          {'DESCRIPTOR': descriptor, '__module__': None})
          # If module not set, it wrongly points to the reflection.py module.
      self._classes[descriptor] = result_class
      for field in descriptor.fields:
        if field.message_type:
          self.GetPrototype(field.message_type)
      for extension in result_class.DESCRIPTOR.extensions:
        if extension.containing_type not in self._classes:
          self.GetPrototype(extension.containing_type)
        extended_class = self._classes[extension.containing_type]
        extended_class.RegisterExtension(extension)
    return self._classes[descriptor] 

def GetPrototype(self, descriptor):
    """Builds a proto2 message class based on the passed in descriptor.

    Passing a descriptor with a fully qualified name matching a previous
    invocation will cause the same class to be returned.

    Args:
      descriptor: The descriptor to build from.

    Returns:
      A class describing the passed in descriptor.
    """
    if descriptor not in self._classes:
      descriptor_name = descriptor.name
      if str is bytes:  # PY2
        descriptor_name = descriptor.name.encode('ascii', 'ignore')
      result_class = reflection.GeneratedProtocolMessageType(
          descriptor_name,
          (message.Message,),
          {'DESCRIPTOR': descriptor, '__module__': None})
          # If module not set, it wrongly points to the reflection.py module.
      self._classes[descriptor] = result_class
      for field in descriptor.fields:
        if field.message_type:
          self.GetPrototype(field.message_type)
      for extension in result_class.DESCRIPTOR.extensions:
        if extension.containing_type not in self._classes:
          self.GetPrototype(extension.containing_type)
        extended_class = self._classes[extension.containing_type]
        extended_class.RegisterExtension(extension)
    return self._classes[descriptor] 

def testHandWrittenReflection(self):
    # Hand written extensions are only supported by the pure-Python
    # implementation of the API.
    if api_implementation.Type() != 'python':
      return

    FieldDescriptor = descriptor.FieldDescriptor
    foo_field_descriptor = FieldDescriptor(
        name='foo_field', full_name='MyProto.foo_field',
        index=0, number=1, type=FieldDescriptor.TYPE_INT64,
        cpp_type=FieldDescriptor.CPPTYPE_INT64,
        label=FieldDescriptor.LABEL_OPTIONAL, default_value=0,
        containing_type=None, message_type=None, enum_type=None,
        is_extension=False, extension_scope=None,
        options=descriptor_pb2.FieldOptions())
    mydescriptor = descriptor.Descriptor(
        name='MyProto', full_name='MyProto', filename='ignored',
        containing_type=None, nested_types=[], enum_types=[],
        fields=[foo_field_descriptor], extensions=[],
        options=descriptor_pb2.MessageOptions())
    class MyProtoClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = mydescriptor
    myproto_instance = MyProtoClass()
    self.assertEqual(0, myproto_instance.foo_field)
    self.assertTrue(not myproto_instance.HasField('foo_field'))
    myproto_instance.foo_field = 23
    self.assertEqual(23, myproto_instance.foo_field)
    self.assertTrue(myproto_instance.HasField('foo_field')) 

def GetPrototype(self, descriptor):
    """Builds a proto2 message class based on the passed in descriptor.

    Passing a descriptor with a fully qualified name matching a previous
    invocation will cause the same class to be returned.

    Args:
      descriptor: The descriptor to build from.

    Returns:
      A class describing the passed in descriptor.
    """
    if descriptor.full_name not in self._classes:
      descriptor_name = descriptor.name
      if str is bytes:  # PY2
        descriptor_name = descriptor.name.encode('ascii', 'ignore')
      result_class = reflection.GeneratedProtocolMessageType(
          descriptor_name,
          (message.Message,),
          {'DESCRIPTOR': descriptor, '__module__': None})
          # If module not set, it wrongly points to the reflection.py module.
      self._classes[descriptor.full_name] = result_class
      for field in descriptor.fields:
        if field.message_type:
          self.GetPrototype(field.message_type)
      for extension in result_class.DESCRIPTOR.extensions:
        if extension.containing_type.full_name not in self._classes:
          self.GetPrototype(extension.containing_type)
        extended_class = self._classes[extension.containing_type.full_name]
        extended_class.RegisterExtension(extension)
    return self._classes[descriptor.full_name] 

def testHandWrittenReflection(self):
    # Hand written extensions are only supported by the pure-Python
    # implementation of the API.
    if api_implementation.Type() != 'python':
      return

    FieldDescriptor = descriptor.FieldDescriptor
    foo_field_descriptor = FieldDescriptor(
        name='foo_field', full_name='MyProto.foo_field',
        index=0, number=1, type=FieldDescriptor.TYPE_INT64,
        cpp_type=FieldDescriptor.CPPTYPE_INT64,
        label=FieldDescriptor.LABEL_OPTIONAL, default_value=0,
        containing_type=None, message_type=None, enum_type=None,
        is_extension=False, extension_scope=None,
        options=descriptor_pb2.FieldOptions())
    mydescriptor = descriptor.Descriptor(
        name='MyProto', full_name='MyProto', filename='ignored',
        containing_type=None, nested_types=[], enum_types=[],
        fields=[foo_field_descriptor], extensions=[],
        options=descriptor_pb2.MessageOptions())
    class MyProtoClass(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = mydescriptor
    myproto_instance = MyProtoClass()
    self.assertEqual(0, myproto_instance.foo_field)
    self.assertTrue(not myproto_instance.HasField('foo_field'))
    myproto_instance.foo_field = 23
    self.assertEqual(23, myproto_instance.foo_field)
    self.assertTrue(myproto_instance.HasField('foo_field')) 

def testDescriptorProtoSupport(self):
    # Hand written descriptors/reflection are only supported by the pure-Python
    # implementation of the API.
    if api_implementation.Type() != 'python':
      return

    def AddDescriptorField(proto, field_name, field_type):
      AddDescriptorField.field_index += 1
      new_field = proto.field.add()
      new_field.name = field_name
      new_field.type = field_type
      new_field.number = AddDescriptorField.field_index
      new_field.label = descriptor_pb2.FieldDescriptorProto.LABEL_OPTIONAL

    AddDescriptorField.field_index = 0

    desc_proto = descriptor_pb2.DescriptorProto()
    desc_proto.name = 'Car'
    fdp = descriptor_pb2.FieldDescriptorProto
    AddDescriptorField(desc_proto, 'name', fdp.TYPE_STRING)
    AddDescriptorField(desc_proto, 'year', fdp.TYPE_INT64)
    AddDescriptorField(desc_proto, 'automatic', fdp.TYPE_BOOL)
    AddDescriptorField(desc_proto, 'price', fdp.TYPE_DOUBLE)
    # Add a repeated field
    AddDescriptorField.field_index += 1
    new_field = desc_proto.field.add()
    new_field.name = 'owners'
    new_field.type = fdp.TYPE_STRING
    new_field.number = AddDescriptorField.field_index
    new_field.label = descriptor_pb2.FieldDescriptorProto.LABEL_REPEATED

    desc = descriptor.MakeDescriptor(desc_proto)
    self.assertTrue('name' in desc.fields_by_name)
    self.assertTrue('year' in desc.fields_by_name)
    self.assertTrue('automatic' in desc.fields_by_name)
    self.assertTrue('price' in desc.fields_by_name)
    self.assertTrue('owners' in desc.fields_by_name)

    class CarMessage(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = desc

    prius = CarMessage()
    prius.name = 'prius'
    prius.year = 2010
    prius.automatic = True
    prius.price = 25134.75
    prius.owners.extend(['bob', 'susan'])

    serialized_prius = prius.SerializeToString()
    new_prius = reflection.ParseMessage(desc, serialized_prius)
    self.assertTrue(new_prius is not prius)
    self.assertEqual(prius, new_prius)

    # these are unnecessary assuming message equality works as advertised but
    # explicitly check to be safe since we're mucking about in metaclass foo
    self.assertEqual(prius.name, new_prius.name)
    self.assertEqual(prius.year, new_prius.year)
    self.assertEqual(prius.automatic, new_prius.automatic)
    self.assertEqual(prius.price, new_prius.price)
    self.assertEqual(prius.owners, new_prius.owners) 

def testDescriptorProtoSupport(self):
    # Hand written descriptors/reflection are only supported by the pure-Python
    # implementation of the API.
    if api_implementation.Type() != 'python':
      return

    def AddDescriptorField(proto, field_name, field_type):
      AddDescriptorField.field_index += 1
      new_field = proto.field.add()
      new_field.name = field_name
      new_field.type = field_type
      new_field.number = AddDescriptorField.field_index
      new_field.label = descriptor_pb2.FieldDescriptorProto.LABEL_OPTIONAL

    AddDescriptorField.field_index = 0

    desc_proto = descriptor_pb2.DescriptorProto()
    desc_proto.name = 'Car'
    fdp = descriptor_pb2.FieldDescriptorProto
    AddDescriptorField(desc_proto, 'name', fdp.TYPE_STRING)
    AddDescriptorField(desc_proto, 'year', fdp.TYPE_INT64)
    AddDescriptorField(desc_proto, 'automatic', fdp.TYPE_BOOL)
    AddDescriptorField(desc_proto, 'price', fdp.TYPE_DOUBLE)
    # Add a repeated field
    AddDescriptorField.field_index += 1
    new_field = desc_proto.field.add()
    new_field.name = 'owners'
    new_field.type = fdp.TYPE_STRING
    new_field.number = AddDescriptorField.field_index
    new_field.label = descriptor_pb2.FieldDescriptorProto.LABEL_REPEATED

    desc = descriptor.MakeDescriptor(desc_proto)
    self.assertTrue('name' in desc.fields_by_name)
    self.assertTrue('year' in desc.fields_by_name)
    self.assertTrue('automatic' in desc.fields_by_name)
    self.assertTrue('price' in desc.fields_by_name)
    self.assertTrue('owners' in desc.fields_by_name)

    class CarMessage(six.with_metaclass(reflection.GeneratedProtocolMessageType, message.Message)):
      DESCRIPTOR = desc

    prius = CarMessage()
    prius.name = 'prius'
    prius.year = 2010
    prius.automatic = True
    prius.price = 25134.75
    prius.owners.extend(['bob', 'susan'])

    serialized_prius = prius.SerializeToString()
    new_prius = reflection.ParseMessage(desc, serialized_prius)
    self.assertTrue(new_prius is not prius)
    self.assertEqual(prius, new_prius)

    # these are unnecessary assuming message equality works as advertised but
    # explicitly check to be safe since we're mucking about in metaclass foo
    self.assertEqual(prius.name, new_prius.name)
    self.assertEqual(prius.year, new_prius.year)
    self.assertEqual(prius.automatic, new_prius.automatic)
    self.assertEqual(prius.price, new_prius.price)
    self.assertEqual(prius.owners, new_prius.owners)