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