> (I am currently not on this list, so replies, please cc me.) > > The later versions of the GNU parser generator Bison, like > ftp://ftp.gnu.org/gnu/bison/bison-1.75.tar.gz (959 KB) > ftp://ftp.gnu.org/gnu/bison/bison-1.75.tar.bz2 (759 KB) > use the macro processing program M4 to produce the source code output. > > This should make it real easy to write parser generator > (skeleton) files > designed for special languages. > > So I wonder if somebody may want to make an attempt to produce such > skeleton files for Haskell. Bison has now not only an LALR(1) parser > algorithm, but also a GLR parser, and more is to come.
Note that Happy has support for some Haskellish things which you won't get if you use bison to generate Haskell. For example: type signatures on productions, and support for threading a monad around the parser. Nevertheless, doing this sounds entirely feasible. The parser tables generated by bison are very similar to those generated by Happy (I peeked at bison's source when I wrote the table-generation code in Happy), so looking at Happy's LALR(1) machine might be a good place to start. Cheers, Simon _______________________________________________ Haskell mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell