编译原理LL(1)文法分析器 录入合法的LL(1)文法，将输出LL(1)预测分析表，并可以对输入的句子进行语法分析输出相应语法树。-compiler theory LL (1) grammar analyzer input legitimate LL (1) grammar, will output LL (1) Table Forecast and Analysis, and can import sentence for syntax analysis syntax tree corresp

递归下降分析器的设计 首先将文法改写成EBNF形式，根据递归下降分析法基本思想编写程序。 -The design of recursive descent parser rewrite first EBNF grammar forms, according to the basic idea recursive descent analysis programming.