static PTElement ai_completeParseTree(AI_BottomUpParser1 parser, PTElement root) {
  if (root == null) null;
  L<WeightedProduction> productions = ai_buParser_parseWeightedProductions();
  ai_parseTree_makeWeights(parser, productions, root);
  ai_parseTree_makeTotalWeights(root, 1);
  ret root;
}