Function MaybePrintMessageValue

validator/validator_gen_js.py:522–540

Print field_val if necessary, and return its message reference. Args: descriptor: The descriptor module from the protobuf package, e.g. google.protobuf.descriptor. field_val: The value of a field, a proto message. registry: an instance of MessageRegistry, used for mapping from

(descriptor, field_val, registry, out)

def MaybePrintMessageValue(descriptor, field_val, registry, out):
  """Print field_val if necessary, and return its message reference.

  Args:
    descriptor: The descriptor module from the protobuf package, e.g.
        google.protobuf.descriptor.
    field_val: The value of a field, a proto message.
    registry: an instance of MessageRegistry, used for mapping from
        messages to message keys.
    out: a list of lines to output (without the newline characters) wrapped as
        an OutputFormatter instance, to which this function will append.
  Returns:
    This object's message reference, e.g. typically the variable name in
    validator-generated.js.
  """
  message_key = MessageKey(field_val)
  if not registry.IsPrinted(message_key):
    PrintObject(descriptor, field_val, registry, out)
  return registry.MessageReferenceForKey(message_key)


def IsTrivialAttrSpec(attr):