简介
https://www.cnblogs.com/laud/p/anltrv4_1.html
antlr 4新特性总结及与antlr v3的不同
https://www.cnblogs.com/laud/p/antlrv4_diff.html
准备环境
https://www.cnblogs.com/laud/p/antlrv4_2.html
g4文件概览
https://www.cnblogs.com/laud/p/antlrv4_3.html
词法规则入门之黄金定律
https://www.cnblogs.com/laud/p/antlr4_4.html