def __init__(cls, name, bases, dictionary):
"""Here we perform the majority of our work on the class.
We add enum getters, an __init__ method, implementations
of all Message methods, and properties for all fields
in the protocol type.
Args:
name: Name of the class (ignored, but required by the
metaclass protocol).
bases: Base classes of the class we're constructing.
(Should be message.Message). We ignore this field, but
it's required by the metaclass protocol
dictionary: The class dictionary of the class we're
constructing. dictionary[_DESCRIPTOR_KEY] must contain
a Descriptor object describing this protocol message
type.
"""
descriptor = dictionary[GeneratedProtocolMessageType._DESCRIPTOR_KEY]
existing_class = getattr(descriptor, '_concrete_class', None)
if existing_class:
assert existing_class is cls, (
'Duplicate `GeneratedProtocolMessageType` created for descriptor %r'
% (descriptor.full_name))
return
cls._decoders_by_tag = {}
if (descriptor.has_options and
descriptor.GetOptions().message_set_wire_format):
cls._decoders_by_tag[decoder.MESSAGE_SET_ITEM_TAG] = (
decoder.MessageSetItemDecoder(descriptor), None)
for field in descriptor.fields:
_AttachFieldHelpers(cls, field)
descriptor._concrete_class = cls
_AddEnumValues(descriptor, cls)
_AddInitMethod(descriptor, cls)
_AddPropertiesForFields(descriptor, cls)
_AddPropertiesForExtensions(descriptor, cls)
_AddStaticMethods(cls)
_AddMessageMethods(descriptor, cls)
_AddPrivateHelperMethods(descriptor, cls)
superclass = super(GeneratedProtocolMessageType, cls)
superclass.__init__(name, bases, dictionary)
def InitMessage(descriptor, cls):
cls._decoders_by_tag = {}
cls._extensions_by_name = {}
cls._extensions_by_number = {}
if (descriptor.has_options
and descriptor.GetOptions().message_set_wire_format):
cls._decoders_by_tag[decoder.MESSAGE_SET_ITEM_TAG] = (
decoder.MessageSetItemDecoder(cls._extensions_by_number))
for field in descriptor.fields:
_AttachFieldHelpers(cls, field)
_AddEnumValues(descriptor, cls)
_AddInitMethod(descriptor, cls)
_AddPropertiesForFields(descriptor, cls)
_AddPropertiesForExtensions(descriptor, cls)
_AddStaticMethods(cls)
_AddMessageMethods(descriptor, cls)
_AddPrivateHelperMethods(cls)