A pig language plugin for intellij, built using JFlex and Grammar-Kit. Pig is an SQL like language for querying Hadoop. Their homepage is here: http://pig.apache.org/
The initial jflex grammar was copied from
https://github.com/11xor6/three-little-piggies
and
https://github.com/brandonkearby/three-little-piggies
Most of the official pig grammar can be found here:
https://svn.apache.org/repos/asf/pig/tags/release-0.11.1-rc0/src/org/apache/pig/parser/QueryParser.g
This is licensed under the Apache2 license, although I haven't yet put it into all the source code yet.