I use SPARK (Scanning, Parsing, and Rewriting Kit) it makes Earley parsers. > The original version of this was written by John Aycock for his Ph.d thesis and w

I use SPARK (Scanning, Parsing, and Rewriting Kit) it makes Earley parsers. > The original version of this was written by John Aycock for his Ph.d thesis and was described in his 1998 paper: “Compiling Little Languages in Python” at the 7th International Python http://pages.cpsc.ucalgary.ca/~aycock/spark/ http://pages.cpsc.ucalgary.ca/~aycock/spark/ (Older) https://pypi.org/project/spark-parser/ https://pypi.org/project/spark-parser/ (More recent)