X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fgrafite_engine%2FnCicCoercDeclaration.ml;h=7fcd6a473f4595f70047f2bda5fce0b6867b68bf;hb=bc389dd4724959688aafc1ede450794f47b8d0b5;hp=fa6b163ad97371a71ff238ff118e63227cec944e;hpb=8b299ba276e095f0fa929a4818d00d253be4c591;p=helm.git

diff --git a/helm/software/components/grafite_engine/nCicCoercDeclaration.ml b/helm/software/components/grafite_engine/nCicCoercDeclaration.ml
index fa6b163ad..7fcd6a473 100644
--- a/helm/software/components/grafite_engine/nCicCoercDeclaration.ml
+++ b/helm/software/components/grafite_engine/nCicCoercDeclaration.ml
@@ -9,7 +9,7 @@
      \ /   This software is distributed as is, NO WARRANTY.     
       V_______________________________________________________________ *)
 
-let debug s = prerr_endline (Lazy.force s) ;;
+(* let debug s = prerr_endline (Lazy.force s) ;;*)
 let debug _ = ();;
 
 let skel_dummy = NCic.Implicit `Type;;
@@ -127,7 +127,7 @@ let only_head = function
 let src_tgt_cpos_arity_of_ty_id_src_tgt status ty id src tgt =
   let status, src, cpos = 
     let rec aux cpos ctx = function
-      | NCic.Prod (name,ty,bo) ->
+      | NCic.Prod (name,ty,bo) -> 
          if name <> id then aux (cpos+1) ((name,NCic.Decl ty)::ctx) bo
          else
            (try 
@@ -177,6 +177,7 @@ let fresh_uri status prefix suffix =
    diverge (mk "") 0
 ;;
 
+exception Stop;;
 
 let close_graph name t s d to_s from_d p a status =
   let c =
@@ -195,13 +196,13 @@ let close_graph name t s d to_s from_d p a status =
     let c_o_from_d = 
       product 
         (fun (n,mc,c,_,j) (n1,m1,t1,ty,i) -> 
-          compose_names n1 n,m1@mc,t1,[i,c],j,count_prod ty) 
+          compose_names n n1,m1@mc,t1,[i,c],j,count_prod ty) 
         [c] from_d
     in
     let to_s_o_c_o_from_d =
       product 
         (fun (n1,m1,t1,_,j) (n,m,t,upl,i,a)-> 
-          compose_names n n1,m@m1,t,(i,t1)::upl,j,a)
+          compose_names n1 n,m@m1,t,(i,t1)::upl,j,a)
         to_s c_o_from_d
     in
     to_s_o_c @ c_o_from_d @ to_s_o_c_o_from_d
@@ -224,14 +225,14 @@ let close_graph name t s d to_s from_d p a status =
          let pos = 
            match p with 
            | NCic.Meta (p,_) -> pos_in_list p (List.map fst metasenv) 
-           | t -> assert false
+           | t -> raise Stop
          in
          let ty = NCicTypeChecker.typeof ~metasenv:[] ~subst:[] [] bo in
          let src,tgt = src_tgt_of_ty_cpos_arity ty pos arity in
          let src = only_head src in
          let tgt = only_head tgt in
          debug (lazy(
-           "composite: "^
+           "composite " ^ name ^ ": "^
            NCicPp.ppterm ~metasenv:[] ~subst:[] ~context:[] bo ^ " : " ^
            NCicPp.ppterm ~metasenv:[] ~subst:[] ~context:[] ty ^ " as " ^
            NCicPp.ppterm ~metasenv:[] ~subst:[] ~context:[] src ^ " ===> " ^
@@ -251,7 +252,7 @@ let close_graph name t s d to_s from_d p a status =
        with 
        | NCicTypeChecker.TypeCheckerFailure _
        | NCicUnification.UnificationFailure _ 
-       | NCicUnification.Uncertain _ -> None
+       | NCicUnification.Uncertain _ | Stop -> None
      ) composites
   in
     composites