535     def identifier(self, children):  argument
537         return _XdrIdentifier(children[0].value)
539     def value(self, children):  argument
541         if isinstance(children[0], _XdrIdentifier):
542             return _XdrValue(children[0].symbol)
543         return _XdrValue(children[0].children[0].value)
545     def constant(self, children):  argument
547         match children[0].data:
549                 value = int(children[0].children[0].value, base=10)
551                 value = int(children[0].children[0].value, base=16)
553                 value = int(children[0].children[0].value, base=8)
556     def type_specifier(self, children):  argument
558         if isinstance(children[0], _XdrIdentifier):
559             name = children[0].symbol
562         name = children[0].data.value
565     def constant_def(self, children):  argument
567         name = children[0].symbol
568         value = children[1].value
573     def enum(self, children):  argument
575         enum_name = children[0].symbol
579         body = children[1]
580         while i < len(body.children):
581             name = body.children[i].symbol
582             value = body.children[i + 1].value
588     def fixed_length_opaque(self, children):  argument
590         name = children[0].symbol
591         size = children[1].value
595     def variable_length_opaque(self, children):  argument
597         name = children[0].symbol
598         if children[1] is not None:
599             maxsize = children[1].value
605     def string(self, children):  argument
607         name = children[0].symbol
608         if children[1] is not None:
609             maxsize = children[1].value
615     def fixed_length_array(self, children):  argument
617         spec = children[0]
618         name = children[1].symbol
619         size = children[2].value
623     def variable_length_array(self, children):  argument
625         spec = children[0]
626         name = children[1].symbol
627         if children[2] is not None:
628             maxsize = children[2].value
634     def optional_data(self, children):  argument
636         spec = children[0]
637         name = children[1].symbol
641     def basic(self, children):  argument
643         spec = children[0]
644         name = children[1].symbol
648     def void(self, children):  argument
653     def struct(self, children):  argument
655         name = children[0].symbol
656         fields = children[1].children
667     def typedef(self, children):  argument
669         new_type = children[0]
673     def case_spec(self, children):  argument
676         for item in children[0:-1]:
678         arm = children[-1]
682     def default_spec(self, children):  argument
684         arm = children[0]
688     def union(self, children):  argument
690         name = children[0].symbol
692         body = children[1]
693         discriminant = body.children[0].children[0]
694         cases = body.children[1:-1]
695         default = body.children[-1]
699     def procedure_def(self, children):  argument
701         result = children[0]
702         name = children[1].symbol
703         argument = children[2]
704         number = children[3].value
708     def version_def(self, children):  argument
710         name = children[0].symbol
711         number = children[-1].value
712         procedures = children[1:-1]
716     def program_def(self, children):  argument
718         name = children[0].symbol
719         number = children[-1].value
720         versions = children[1:-1]
724     def pragma_def(self, children):  argument
726         directive = children[0].children[0].data
729                 big_endian.append(children[1].symbol)
731                 excluded_apis.append(children[1].symbol)
734                 header_name = children[1].symbol
736                 public_apis.append(children[1].symbol)