编译原理的源代码，涉及了编译原理的各个过程：词法分析，LL1语法分析，语义分析，中间代码生成，中间代码优化（常表达式优化，公共表达式优化，循环不变式优化），中间代码生成目标代码，目标代码的解释执行行，详详细地阐述了一个编译器的设计与实现。它是大纲教学，课程设计良好的示范，也是编程与开发爱好者提高的好参考，其中这是语义分析部分。希望尽早的开通我的帐号，与大家多多交流，成为热爱编程与开发的好朋友

-Compile the source code of the principle of involving the various compiler theory: lexical analysis, LL1 syntax analysis, semantic analysis, intermediate code generation, and code optimization (regular expression optimization, public expression optimization, optimization loop invariant), the middle code generated object code, object code interpreter execution line, details and detailed exposition of the Design and Implementation of a compiler. It is a good demonstration of the outline of teaching, curriculum design, programming and development enthusiasts improve the reference, of which this is a semantic analysis part. I hope to open my account as soon as possible, and to interact more with people to become good friends who love programming and development