A command line tool to mine and analyze data from version-control
Code Maat is a command-line tool for analyzing version-control systems (Git, SVN, etc.) to uncover code health insights—development hotspots, author coupling, and temporal change metrics. Created by Adam Tornhill, it supports research in behavioral code analysis and is often paired with his books like Code as a Crime Scene and Software Design X‑Rays.
...Harbour project
https://harbour.github.io/
Docs about ANTLR:
https://tomassetti.me/antlr-mega-tutorial
http://www.xfront.com/ANTLR/
about v.3:
http://www.r-5.org/files/books/computers/compilers/writing/Terence_Parr-The_Definitive_ANTLR_Reference-EN.pdf
about v.4:
https://pragprog.com/book/tpantlr2/the-definitive-antlr-4-reference
and help here
https://groups.google.com/forum/#!topic/antlr-discussion