Python google.protobuf.internal.type_checkers.TYPE_TO_ENCODER Examples

The following are 1 code examples for showing how to use google.protobuf.internal.type_checkers.TYPE_TO_ENCODER(). These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.

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Example 1
Project: botchallenge   Author: katharosada   File: python_message.py    License: MIT License 5 votes vote down vote up
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):
    # To support wire compatibility of adding packed = true, add a decoder for
    # packed values regardless of the field's options.
    AddDecoder(wire_format.WIRETYPE_LENGTH_DELIMITED, True)