So, outlining the problem with the provided information: 1) Use gui interface to "draw" a grammer diagram describing the AST/modified tree (aka transition

So, outlining the problem with the provided information: 1) Use gui interface to "draw" a grammer diagram describing the AST/modified tree (aka transition diagram / BNF / EBNF / w3 grammer specificatation(s) XSLT to use isn't in original request. XSLT grammer for "gui" is version dependent. w3 specification(s) http://www.w3.org Note: things other XSLT too! Example program(s) for the 'gui' edit: https://tikzit.github.io/index.html or https://latex-cookbook.net/graph/ Perhaps bootup a livecd (https://www.tug.org/texlive) or online https://www.overleaf.com/ Use tikzi library from github or graph.tex from latex-cookbook 2) Take latex drawing & transform to lex/yacc description. https://github.com/rajnitish/Latex-to-Html-Lex-Yacc/blob/master/parser 3) Rust grmtools, https://softdevteam.github.io/grmtools/master/book https://softdevteam.github.io/grmtools/master/book has relevant libraries/tools to make use of files generated in step 2. ---------------- Automation idea: No programmer history/preferences for OS/language/environment specified. So, shell script to "automate"/glue this all togehter as one command line program left as a reader exercise. ;)