SkipOOMiniJOOL教学语言的编译器前端，包含基本的语义检查（师弟师妹们可不要完全照抄，自己做才有提高，里面有你们师兄的名字，参照记得请师兄我吃饭:）-SkipOOMiniJOOL teaching language compiler front-end. includes basic semantic inspection (Shidishimei they could not simply copy themselves can do to improve, There are th