了解cmm语言的语法和词法分析，帮助理解cmm语法解释器的基本设计-Understood cmm language syntax and lexical analysis to help understand the basic design of the the cmm syntax interpreter

cmm 语言的解释器，包括整个程序的设计，以及程序的词法分析语法分析语义分析以及最后的解释执行。-cmm language interpreter, including the design of the entire program, and the program s lexical analysis syntax analysis semantic analysis and final interpretation of the implementation.