Re: [Haskell-cafe] Why GHC is written in Happy and not a monadic parser library?

On Fri, Aug 2, 2013 at 8:49 PM, blackbox.dev.ml wrote:

Is there any specific reason why GHC is written in a parser GENERATOR (Happy) and not in MONADIC PARSER COMBINATOR (like parsec)?

Is Happy faster / handles better errors / hase some great features or anything else?

Most probably because GHC predates practical parser combinators. Happy is just a yacc clone, really; ancient tech. And I would suspect that replacing the parser at this point could get pretty painful. -- brandon s allbery kf8nh sine nomine associates allbery.b@gmail.com ballbery@sinenomine.net unix, openafs, kerberos, infrastructure, xmonad http://sinenomine.net