PADS/ML can do that for you, and more. You can find information about the PADS languages and tools here:
http://www.padsproj.org including papers and a manual. The website doesn't have the most recent release of PADS/ML -- i plan to put it up on Github shortly -- but if you're interested, i'm happy to send you a tarball. The basic idea is that you specify your grammar as a type-like declaration. Then, pads/ml generates an AST, parser, printer and some more stuff for you. The generated parser is like a PEG parser, but with support context-sensitive parsing. That is, it is deterministic, with ordered choice; and, it is scannerless. So, the grammars-writing style has some significant differences from ocamllex and ocamlyacc. PADS/ML has an Eclipse license. Cheers, Yitzhak On Dec 8, 2010, at 11:47 PM, Dawid Toton wrote: > I'm going to define a parser and a printer for a simple grammar. > Is there a way to define both of them in a single construct using some > existing OCaml tool? > > For example, I have a keyword "function". The usual parser would contain a > mapping like: > "function" -> `Function > and the straightforward printer would do: > `Function -> "function" > > What is the best way to combine these definitions, so that duplication would > be minimized? > To be precise, avoiding duplication is not exactly what I need. I'm looking > for something that would prevent making inconsistent changes to the parser > and the printer. > > Dawid > > _______________________________________________ > Caml-list mailing list. Subscription management: > http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list > Archives: http://caml.inria.fr > Beginner's list: http://groups.yahoo.com/group/ocaml_beginners > Bug reports: http://caml.inria.fr/bin/caml-bugs ----------------------------- Yitzhak Mandelbaum _______________________________________________ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
