http://www.engr.mun.ca/~theo/JavaCC-FAQ/javacc-faq-moz.htm
https://generatingparserswithjavacc.com/
https://www.cs.purdue.edu/homes/hosking/javacc/doc/lookahead.html
JavaCC
原文：https://www.cnblogs.com/WCFGROUP/p/9610908.html
