用C++作为宿主语言完成Java 语言子集语法、语义分析器。完成文法描述的Java 源代码的语法分析、语义分析及代码生成。代 码生成的目标代码为MASM 汇编代码-Using C++ as the host language to complete a subset of Java language syntax, semantic analyzer. Complete grammar of the Java source code to describe the syntax analys