Original grammar can be found at https://github.com/antlr/grammars-v4.
To build java files and classes use: ./build-antlr4.sh
To analyze files use: ./analyze.sh [-tokens] [-gui] < files >
Interesting: https://habrahabr.ru/post/259691/
http://docs.oracle.com/cd/B19306_01/appdev.102/b14261/fundamentals.htm#LNPLS00210 http://docs.oracle.com/cd/B28359_01/appdev.111/b28370/langelems.htm http://docs.oracle.com/cd/B28359_01/appdev.111/b28370/toc.htm
Database PL/SQL Language Reference: http://docs.oracle.com/cd/B28359_01/appdev.111/b28370/toc.htm
http://stackoverflow.com/questions/14565794/antlr-4-tree-inject-rewrite-operator http://www.antlr.org/api/Java/org/antlr/v4/runtime/TokenStreamRewriter.html