从一个开源软件中摘取的正则表达式模块，是学习正则表达式、编译原理的好东西。...

不需要做任何修改的lex-yacc的demo，可以在parser generator或lex-bison下成功运行-Do not need to make any changes to the lex-yacc the demo, or a parser generator in the lex-bison successfully running

编译原理LL1分析表- Translation principle LL1 analytical table

编译原理词法分析源码，将一段程序代码，分析成一个有序token序列 -Principles of lexical analysis to compile source code, will be a section of program code, analysis as a token in an orderly sequence

本程序实现了简单的编译器功能，是用PL0语言编写的，思路明确-This procedure achieved a simple compiler function is PL0 languages, ideas clearly

封装好人机接口分析器，类似于XML文件分析器.-good Packaging Machine Interface analyzer similar to the XML file analyzer.

语义分析器，将语义分析程序编制成子程序，在语法分析器分析出各语法单位后，分析其含义，并将可执行语句或表达式翻译为四元式输出，并将错误信息输出。-Semantic analyzer, semantic analysis program compiled subroutines, in the parser analyzes the syntax of the unit, analyze its meaning, and translated into an executable statement or expression quaternary-output, and error information output.

在tc上实现的编译原理词法分析程序，直接在当前目录执行即可。-in achieving the compiler theory lexical analysis procedure directly in the current directory to be implemented.

vc实现的pl0编译器,有读取输出功能-read() -write(),这个源码对初学编译原理者有很好的指导作用,我当初学的时候用了3天看懂了源码,也对编译原理更加理解了,毕竟只学理论不看代码是不可能真正理解的,原作者是dwing,我对代码做了一些修改,在此感谢dwing提供的代码-vc achieve pl0 compiler, a reader output- read ()- write (), the source for beginners compiler principles are very good role in guiding, I had time to study the use of three days to read the source code, but also to build a greater understanding of the tenets of all, the theory is not see the code is impossible to truly understand the original author dwing yes, I made some code changes like to thank the code dwing

一个简单的C词法分析器 能识别数字,标志符(关键字,变量)和一些运算符.-a simple C lexical analyzer can identify the number, identifier (keyword, variable), and some Operators.

这是一个用C++编写的编译原理的词法分析程序,希望对各位学习编译的同学有一定帮助-This is a C compiler prepared by the tenets of lexical analysis procedure, and I hope to learn from you and the compiler will definitely help students