Introduction - If you have any usage issues, please Google them yourself
Understanding of the internal parser working principle, in this experiment through the use of a certain degree of programming skills, master of the expression of a way to deal with. ① the input grammar, automatically constructed by the procedures set FIRST FOLLOW ② the input grammar, it is automatically generated by the process of LL (1) analysis table ③ For a given input strings, should be able to identify the string to determine whether a given grammar sentence.