I want to write a translator between two languages, and after some reading on the Internet I've decided to go with ANTLR. I had to learn it from scratch, but besides some trouble with eliminating left recursion everything went fine until now.

However, today some guy told me to check out Happy, a Haskell based parser generator. I have no Haskell knowledge, so I could use some advice, if Happy is indeed better than ANTLR and if it's worth learning it.

Specifically what concerns me is that my translator needs to support macro substitution, which I have no idea yet how to do in ANTLR. Maybe in Happy this is easier to do?

Or if think other parser generators are even better, I'd be glad to hear about them.