X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fcomponents%2Fng_paramodulation%2FnCicParamod.ml;h=702cd8c16dc8c3482bdf64883e3b95b8de3efbbb;hb=926bd86002f91d2bf2a3ce7376309f5106268959;hp=f56ac0cdf270e0bd567d1987746ea60421fbee1b;hpb=e010714e36cd64e69e66d5e8f44c1229ec4deb61;p=helm.git

diff --git a/matita/components/ng_paramodulation/nCicParamod.ml b/matita/components/ng_paramodulation/nCicParamod.ml
index f56ac0cdf..702cd8c16 100644
--- a/matita/components/ng_paramodulation/nCicParamod.ml
+++ b/matita/components/ng_paramodulation/nCicParamod.ml
@@ -71,9 +71,9 @@ let nparamod status metasenv subst context t table =
       let context = context 
     end 
   in
-  let module B = B(C) in
+  (*let module B = B(C) in*)
   let module P = NCicParamod(C) in
-  let module Pp = Pp.Pp(B) in
+  (*let module Pp = Pp.Pp(B) in*)
   let bag, maxvar = Terms.empty_bag, 0 in
   let (bag,maxvar), goals = 
     HExtlib.list_mapi_acc (fun x _ a -> P.mk_goal a x) (bag,maxvar) [t]
@@ -132,20 +132,24 @@ let tooflex (_,l,_,_) =
     | _ -> false
 ;;  
 
-let forward_infer_step status metasenv subst context s t ty =
+let forward_infer_step0 status metasenv subst context s t ty =
   let bag = P.bag_of_state s in
   let not_embed =
     let sty,_,_ = 
       NCicMetaSubst.saturate status ~delta:0  metasenv subst context ty 0 in
       not_embeddable status subst context sty in
-  if not_embed then (debug (lazy "theorem not embeddable"); s)
+  if not_embed then (debug (lazy "theorem not embeddable"); s,None)
   else
   let bag,clause = P.mk_passive bag (t,ty) in
     if Terms.is_eq_clause clause then
-      if tooflex clause then (debug (lazy "pruning tooflex"); s)
+      if tooflex clause then (debug (lazy "pruning tooflex"); s,None)
       else
-       P.forward_infer_step (P.replace_bag s bag) clause 0
-    else (debug (lazy "not eq"); s)
+       P.forward_infer_step (P.replace_bag s bag) clause 0, Some clause
+    else (debug (lazy "not eq"); s,None)
+;;
+
+let forward_infer_step status metasenv subst context s t ty =
+ fst (forward_infer_step0 status metasenv subst context s t ty)
 ;;
 
 let index_obj status s uri =
@@ -155,11 +159,11 @@ let index_obj status s uri =
   match obj with
     | (_,_,[],[],NCic.Constant(_,_,None,ty,_)) ->
         let nref = NReference.reference_of_spec uri NReference.Decl in
-	forward_infer_step status [] [] [] s (NCic.Const nref) ty
+	forward_infer_step0 status [] [] [] s (NCic.Const nref) ty
     | (_,d,[],[],NCic.Constant(_,_,Some(_),ty,_)) ->
         let nref = NReference.reference_of_spec uri (NReference.Def d) in
-	forward_infer_step status [] [] [] s (NCic.Const nref) ty
-    | _ -> s
+	forward_infer_step0 status [] [] [] s (NCic.Const nref) ty
+    | _ -> s,None
 ;;
 
 let demod status metasenv subst context s goal =
@@ -201,7 +205,7 @@ let is_equation status metasenv subst context ty =
     NCicMetaSubst.saturate status ~delta:0 metasenv subst context
       ty 0 
   in match hty with
-    | NCic.Appl (eq ::tl) when eq = CB.eqP -> true
+    | NCic.Appl (eq ::_) when eq = CB.eqP -> true
     | _ -> false
 ;;