程序说明：

该程序能够根据给定的文法判断它是否为LR0，SLR1，LR1，LALR1文法；

打印项目集，分析表，Go函数；

若文法属于LR1，将进行LALR1文法的判断，若属于LALR1文法，将继续打印LALR1文法的项目集，分析表和Go函数。-Program Descr iption: The program according to the given grammar can determine whether it is LR0, SLR1, LR1, LALR1 grammar　print project collection, analysis table, Go function　If the grammar belongs LR1, will be judged LALR1 grammar, if the grammar belongs LALR1 , will continue to print LALR1 grammar items collection, analysis tables and Go function.