Actually, maybe not full-blown Lex/Yacc. I\'m implementing a command-interpreter front-end to administer a webapp. I\'m looking for something that\'ll take a grammar definit
If you don't fear alpha software and want an alternative to Lex / Yacc for creating your own languages, you might look into Oslo. I would recommend you to sit through session recordings of sessions TL27 and TL31 from last years PDC. TL31 directly addresses the creation of Domain Specific Languages using Oslo.