Method get_new_token

tools/alive_parser.cpp:158–168

private:
  token get_new_token() const {
    try {
      auto t = yylex();
#if YYDEBUG
      cout << "token: " << token_name[t] << '\n';
#endif
      return t;
    } catch (LexException &e) {
      throw ParseException(std::move(e.str), e.lineno);
    }
  }
};
}