On Fri, 3 Sep 2010 21:28:24 +0000 (UTC) Sylvain Le Gall <sylv...@le-gall.net> wrote:
> On 03-09-2010, bluestorm <bluestorm.d...@gmail.com> wrote: > > Hi, > > > > Finally, I have a third solution based on code generation : given my > > first solution (turning the association list into a function), what > > you need is only a list of all the constructors (and you can build > > your assoc list with List.map (fun x -> x, assoc_function x)). This > > can easily be generated from the datatype declaration using direct > > camlp4, or Markus Mottl's type-conv ( > > http://www.ocaml.info/home/ocaml_sources.html#toc11 ). > > > > Your answer and the one from Martin/Ashish, makes me think that I need > to go back to camlp4/type-conv... I would have like to avoid this > solution, but I think it is the best one. Hello, Here is another solution, based on oug[1]. The idea is to: 1. make oug analyse your source files and dump the result, 2. write a program loading the dump and performing the checks you want. Here is an example, which performs 1. and 2., with only one source file "foo.ml". === myoug.ml let (data, _) = Ouglib.Analyze.analyze ["foo.ml"];; let number_variants = Ouglib.Lang.filter_elements data (Ouglib.Lang.Name { Ouglib.Lang.sel_name = "Foo.number.*" ; sel_kind = [ Ouglib.Data.Type_field ] ; } ) ;; let numbers_list_id = match Ouglib.Lang.filter_elements data (Ouglib.Lang.Name { Ouglib.Lang.sel_name = "Foo.numbers" ; sel_kind = [ Ouglib.Data.Value ] ; } ) with [id] -> id | _ -> assert false ;; let graph = data.Ouglib.Data.graph ;; let created_by_numbers_list = let l = Ouglib.Graph.succ graph numbers_list_id in let f acc (id, k) = match k with Ouglib.Data.Create -> id :: acc | _ -> acc in List.fold_left f [] l ;; let (_,missing) = List.partition (fun id -> List.mem id created_by_numbers_list) number_variants ;; match missing with [] -> exit 0 | _ -> let b = Buffer.create 256 in Ouglib.Dump.print_element_list data b missing; prerr_endline (Printf.sprintf "The following constructors are not present in Foo.numbers:\n%s" (Buffer.contents b) ); exit 1 ;; === /myoug.ml == === foo.ml === type number = One | Two | Three | Four;; let numbers = [ One, 1 ; Two, 2 ];; === /foo.ml == Compilation of myoug.ml to myoug.x: # ocamlc -I +oug str.cma toplevellib.cma oug.cma -o myoug.x myoug.ml Launching myoug.x gives the following: The following constructors are not present in Foo.numbers: f Foo.number.Three f Foo.number.Four Of course, you can adapt the program to fit your needs: have a makefile target to create the oug dump and use this dump in various checking programs, or in one program performing various checks. Hope this helps, Maxence [1] http://home.gna.org/oug/index.fr.html _______________________________________________ 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
