一个Minijava编译器，主要实现是先将Minijava翻译成Piglet，再翻译成Spiglet，接着翻译成Kanga，最后翻译成能够在spim模拟器上运行的MIPS代码。-A Minijava compiler, the main achievement is the first Minijava translated into the Piglet then translated into Spiglet, then translated into Kanga, finally tran