Introduction - If you have any usage issues, please Google them yourself
LL (1) syntax analysis program, (1) on the importation of grammar, it can determine whether to LL (1) grammar, If so, then switch (2); Otherwise errors and terminated; (2) Input known grammar, automatically generated by the LL (1) Analysis Table; (3) For a given input string, Recognition should be able to judge whether the series for a given grammar Sentence