这是一个JAVA类的内核代码，解释了JVM在形成编译器的过程和原理，中间有代码解释。-This is a kind of core Java code, explain the formation of a JVM compiler process and the principles of interpretation of intermediate code.

用C写的SNL语言的编译器。实现了词法、语法、语义、中间代码、优化等功能。内附SNL语言例子。-SNL written with C language compiler. Realized the lexical, syntax, semantics, intermediate code, optimization. Examples included SNL language.

C语言编写的编译器，包括词法分析，语法分析，中间代码生成等等。-Written in C++ compiler, including lexical analysis, parsing, intermediate code generation, and so on.