X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_paramodulation%2Fstats.ml;h=0f9f45d960e6c30aac980d5bde0f62950d7678a1;hb=ee9a771a3cf2124ef65906ae75eb0ba7e2e4303b;hp=90d6ccf0b8197b9f25276130be3b27dd0594f112;hpb=6f2f9693db45a2ef905123bc48cde9f04ddff54f;p=helm.git

diff --git a/helm/software/components/ng_paramodulation/stats.ml b/helm/software/components/ng_paramodulation/stats.ml
index 90d6ccf0b..0f9f45d96 100644
--- a/helm/software/components/ng_paramodulation/stats.ml
+++ b/helm/software/components/ng_paramodulation/stats.ml
@@ -55,15 +55,37 @@ module Stats (B : Terms.Blob) =
 		| Terms.Predicate _ -> assert false;
     ;;
 
+    let goal_pos t goal =
+      let rec aux path = function
+       | Terms.Var _ -> [] 
+       | Terms.Leaf x ->
+           if B.eq t x then path else []
+       | Terms.Node l ->
+           match 
+             HExtlib.list_findopt
+               (fun x i -> 
+                  let p = aux (i::path) x in
+                  if p = [] then None else Some p)
+               l
+           with
+           | None -> []
+           | Some p -> p
+      in 
+        aux [] 
+          (match goal with
+          | _,Terms.Equation (l,r,ty,_),_,_ -> Terms.Node [ Terms.Leaf B.eqP; ty; l; r ]
+	  | _,Terms.Predicate p,_,_ -> p)
+    ;;
+
     let parse_symbols l goal = 
       let res = parse_symbols (parse_symbols SymbMap.empty [goal]) l in
 	SymbMap.fold (fun t (occ,ar) acc ->
-			(t,occ,ar,goal_occ_nbr t goal)::acc) res []
+			(t,occ,ar,goal_occ_nbr t goal,goal_pos t goal)::acc) res []
     ;;
 
     let rec dependencies op clauses acc =
       match clauses with
-	| [] -> []
+	| [] -> acc
 	| (_,lit,_,_)::tl ->
 	    match lit with
 	      | Terms.Predicate _ -> assert false
@@ -87,7 +109,7 @@ module Stats (B : Terms.Blob) =
 			    else
 			      dependencies op tl acc
 			else dependencies op tl acc
-		    | _ -> acc
+		    | _ -> dependencies op tl acc
     ;;
 
     let dependencies op clauses = dependencies op clauses [];;