final public void constraint() throws ParseException {
    switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
    case RANGE:
      range_constraint();
      break;
    case 152:
      index_constraint();
      break;
    default:
      jj_la1[108] = jj_gen;
      jj_consume_token(-1);
      throw new ParseException();
    }
  }