Although I have immense respect for the effort gone into Antlr and the potential it has, I must admit that on the few times in the past I've attempted to leverage it I've never felt more stupid than trying to figure out how to generate a new grammar and convert that into a parser. No criticism of the program or programmer intended; as I said, it has always impressed me and I
want to know how to use it, I just haven't figured out how, yet.
So thanks for posting this; I'll give Lark a shot and see if it's structured the way my brain needs it to be to grok it.