def _AttachFieldHelpers(cls, field_descriptor):
is_repeated = (field_descriptor.label == _FieldDescriptor.LABEL_REPEATED)
is_packed = (field_descriptor.has_options
and field_descriptor.GetOptions().packed)
if _IsMessageSetExtension(field_descriptor):
field_encoder = encoder.MessageSetItemEncoder(field_descriptor.number)
sizer = encoder.MessageSetItemSizer(field_descriptor.number)
else:
field_encoder = type_checkers.TYPE_TO_ENCODER[field_descriptor.type](
field_descriptor.number, is_repeated, is_packed)
sizer = type_checkers.TYPE_TO_SIZER[field_descriptor.type](
field_descriptor.number, is_repeated, is_packed)
field_descriptor._encoder = field_encoder
field_descriptor._sizer = sizer
field_descriptor._default_constructor = _DefaultValueConstructorForField(
field_descriptor)
def AddDecoder(wiretype, is_packed):
tag_bytes = encoder.TagBytes(field_descriptor.number, wiretype)
cls._decoders_by_tag[tag_bytes] = (
type_checkers.TYPE_TO_DECODER[field_descriptor.type](
field_descriptor.number, is_repeated, is_packed,
field_descriptor, field_descriptor._default_constructor))
AddDecoder(type_checkers.FIELD_TYPE_TO_WIRE_TYPE[field_descriptor.type],
False)
if is_repeated and wire_format.IsTypePackable(field_descriptor.type):
AddDecoder(wire_format.WIRETYPE_LENGTH_DELIMITED, True)
def _AttachFieldHelpers(cls, field_descriptor):
is_repeated = (field_descriptor.label == _FieldDescriptor.LABEL_REPEATED)
is_packable = (is_repeated and
wire_format.IsTypePackable(field_descriptor.type))
if not is_packable:
is_packed = False
elif field_descriptor.containing_type.syntax == "proto2":
is_packed = (field_descriptor.has_options and
field_descriptor.GetOptions().packed)
else:
has_packed_false = (field_descriptor.has_options and
field_descriptor.GetOptions().HasField("packed") and
field_descriptor.GetOptions().packed == False)
is_packed = not has_packed_false
is_map_entry = _IsMapField(field_descriptor)
if is_map_entry:
field_encoder = encoder.MapEncoder(field_descriptor)
sizer = encoder.MapSizer(field_descriptor,
_IsMessageMapField(field_descriptor))
elif _IsMessageSetExtension(field_descriptor):
field_encoder = encoder.MessageSetItemEncoder(field_descriptor.number)
sizer = encoder.MessageSetItemSizer(field_descriptor.number)
else:
field_encoder = type_checkers.TYPE_TO_ENCODER[field_descriptor.type](
field_descriptor.number, is_repeated, is_packed)
sizer = type_checkers.TYPE_TO_SIZER[field_descriptor.type](
field_descriptor.number, is_repeated, is_packed)
field_descriptor._encoder = field_encoder
field_descriptor._sizer = sizer
field_descriptor._default_constructor = _DefaultValueConstructorForField(
field_descriptor)
def AddDecoder(wiretype, is_packed):
tag_bytes = encoder.TagBytes(field_descriptor.number, wiretype)
decode_type = field_descriptor.type
if (decode_type == _FieldDescriptor.TYPE_ENUM and
type_checkers.SupportsOpenEnums(field_descriptor)):
decode_type = _FieldDescriptor.TYPE_INT32
oneof_descriptor = None
if field_descriptor.containing_oneof is not None:
oneof_descriptor = field_descriptor
if is_map_entry:
is_message_map = _IsMessageMapField(field_descriptor)
field_decoder = decoder.MapDecoder(
field_descriptor, _GetInitializeDefaultForMap(field_descriptor),
is_message_map)
elif decode_type == _FieldDescriptor.TYPE_STRING:
is_strict_utf8_check = _IsStrictUtf8Check(field_descriptor)
field_decoder = decoder.StringDecoder(
field_descriptor.number, is_repeated, is_packed,
field_descriptor, field_descriptor._default_constructor,
is_strict_utf8_check)
else:
field_decoder = type_checkers.TYPE_TO_DECODER[decode_type](
field_descriptor.number, is_repeated, is_packed,
field_descriptor, field_descriptor._default_constructor)
cls._decoders_by_tag[tag_bytes] = (field_decoder, oneof_descriptor)
AddDecoder(type_checkers.FIELD_TYPE_TO_WIRE_TYPE[field_descriptor.type],
False)
if is_repeated and wire_format.IsTypePackable(field_descriptor.type):
AddDecoder(wire_format.WIRETYPE_LENGTH_DELIMITED, True)