As some know, I have been developing a branch of the pappy parser generator for haskell, I thought I'd give an update to the list on how that is going, and what changes I have made.
first of all, my version of pappy is in the darcs repository located here: http://repetae.net/repos/pappy you can fetch it with ; darcs get http://repetae.net/repos/pappy Some improvements over Bryan's original version are: * explicit export lists on parsers * stand alone mode, pappy will include everything needed to compile a parser in the haskell file generated (or optionally let you use external libraries) * type inference for (), including the ability of the parser to recognize when the result type is () and automatically add the -> { () } that used to be needed to each branch. * an 'import' statement, to import libraries of parsing rules from other files. * multiple entry points into the parser * ability to parse streams of things other than 'Char'. This can be used for a pre-tokenized stream, or if you need an augmented token stream for something like haskell's indentation based grouping. enjoy! I just thought I would share in case anyone else out there were using pappy but wished it had just a bit more. :) I use it for several of my own projects (I intend to replace the jhc haskell parser with pappy at some point) so will likely continue to improve it as needed. John -- John Meacham - ⑆repetae.net⑆john⑈ _______________________________________________ PEG mailing list PEG@lists.csail.mit.edu https://lists.csail.mit.edu/mailman/listinfo/peg
