I would second antlr. Get the book, too, if only for the educational value. http://www.pragprog.com/titles/tpantlr/the-definitive-antlr-reference http://www.p

I would second antlr. Get the book, too, if only for the educational value. http://www.pragprog.com/titles/tpantlr/the-definitive-antlr-reference http://www.pragprog.com/titles/tpantlr/the-definitive-antlr-...