X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=helm%2Fsoftware%2Fcomponents%2Fng_refiner%2FnCicCoercion.ml;h=757041451bbe7978aeb30d0dcdaf88cdf35663d8;hb=aff007d80f87128884c96a664bc88aec69107d85;hp=d168ba5488d9ffa1ccf92311887ab05da4767cba;hpb=20427121e8114fa60b64bd1669a0fc734bf39205;p=helm.git

diff --git a/helm/software/components/ng_refiner/nCicCoercion.ml b/helm/software/components/ng_refiner/nCicCoercion.ml
index d168ba548..757041451 100644
--- a/helm/software/components/ng_refiner/nCicCoercion.ml
+++ b/helm/software/components/ng_refiner/nCicCoercion.ml
@@ -12,7 +12,7 @@
 (* $Id: nCicRefiner.mli 9227 2008-11-21 16:00:06Z tassi $ *)
 
 let debug s = prerr_endline (Lazy.force s);;
-let debug _ = ();;
+(* let debug _ = ();; *)
 
 module COT : Set.OrderedType 
 with type t = string * NCic.term * int * int  * NCic.term *
@@ -98,10 +98,13 @@ let index_old_db odb (status : #status) =
 
 let look_for_coercion status metasenv subst context infty expty =
  let db_src,db_tgt = status#coerc_db in
-  match infty, expty with
+  match 
+    NCicUntrusted.apply_subst subst context infty, 
+    NCicUntrusted.apply_subst subst context expty 
+  with
   | (NCic.Meta _ | NCic.Appl (NCic.Meta _::_)), 
     (NCic.Meta _ | NCic.Appl (NCic.Meta _::_)) -> [] 
-  | _ ->
+  | infty, expty ->
 
     debug (lazy ("LOOK FOR COERCIONS: " ^ 
       NCicPp.ppterm ~metasenv ~subst ~context infty ^ "  |===> " ^
@@ -122,6 +125,16 @@ let look_for_coercion status metasenv subst context infty expty =
           CoercionSet.union (DB.retrieve_unifiables db_tgt expty) set)
         CoercionSet.empty tgt_class
     in
+
+    debug (lazy ("CANDIDATES SRC: " ^ 
+      String.concat "," (List.map (fun (name,t,_,_,_,_) ->
+        name ^ " :: " ^ NCicPp.ppterm ~metasenv ~subst ~context t) 
+      (CoercionSet.elements set_src))));
+    debug (lazy ("CANDIDATES TGT: " ^ 
+      String.concat "," (List.map (fun (name,t,_,_,_,_) ->
+        name ^ " :: " ^ NCicPp.ppterm ~metasenv ~subst ~context t) 
+      (CoercionSet.elements set_tgt))));
+
     let candidates = CoercionSet.inter set_src set_tgt in
 
     debug (lazy ("CANDIDATES: " ^