I'll also look briefly at the issue of operator precedence and generalize the treewalking code into a full-fledged recursive routine that's able to handle arbitrarily complex parse trees. 我还将简要地研究运算符优先级的问题,并将树遍历代码推广到成熟的递归例程中,该例程可以处理任意复杂的解析树。
The operator precedence parsing and recursive descent parsing are used in the syntax analysis and the intermediate code is quadruples. 语法分析中使用了算符优先分析法和递归下降分析法;