final public void constant_declaration() throws ParseException {
    jj_consume_token(CONSTANT);
    identifier_list();
    jj_consume_token(151);
    subtype_indication();
    switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
    case 154:
      jj_consume_token(154);
      expression();
      break;
    default:
      jj_la1[89] = jj_gen;
      ;
    }
    jj_consume_token(SEMICOLON);
  }