编译原理的词法分析器，语法分析器(包括递归子程序，算符优先，LR类分析法)，语义分析等原理图-compiler tenets of lexical analyzer and parser (including recursive subroutines, operator precedence, LR type analysis), semantic analysis diagram

编译原理词法分析器的功能是利用函数之间的递归调用模拟语法树自上而下的构造过程。 改造文法：消除二义性、消除左递归、提取左因子，判断是否为LL（1）文法 -Compiler theory lexical analyzer function is to use recursive function calls between the simulation process of constructing the syntax tree from the top down. Transforma

编译实验报告 包括语法分析器和词法分析器，是课程设计的必选啊-Compile test report includes a parser and lexical analyzer is a must-ah curriculum design