+100 this! Menhir is really awesome and super usable parser generators. We used it to for JSJS [0], and you can see for yourself that the rules are quite easy t

+100 this! Menhir is really awesome and super usable parser generators. We used it to for JSJS [0], and you can see for yourself that the rules are quite easy to understand for a non-trivial grammar. [0] http://jsjs-lang.org http://jsjs-lang.org [1] https://github.com/prakhar1989/JSJS/blob/master/src/parser.mly https://github.com/prakhar1989/JSJS/blob/master/src/parser.m...