X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_refiner%2FnCicUnifHint.ml;h=0f0708d638f58cef8fac17303492c6f7111a68b6;hb=6686ac3a4671abce7c053c9fee7696eeb2182583;hp=e3112f3f2c1d6df176dd19e10cbd527713f9b73c;hpb=7b112b0cd39c5ab0db5c28636c0a7f7e36b4d6e2;p=helm.git

diff --git a/helm/software/components/ng_refiner/nCicUnifHint.ml b/helm/software/components/ng_refiner/nCicUnifHint.ml
index e3112f3f2..0f0708d63 100644
--- a/helm/software/components/ng_refiner/nCicUnifHint.ml
+++ b/helm/software/components/ng_refiner/nCicUnifHint.ml
@@ -144,6 +144,7 @@ let add_user_provided_hint db t precedence =
    index_hint db c a b precedence
 ;;
 
+(*
 let db () = 
   let combine f l =
    List.flatten
@@ -203,6 +204,7 @@ let db () =
     !user_db (List.flatten hints)
 *)
 ;;
+*)
 
 let saturate ?(delta=0) metasenv subst context ty goal_arity =
  assert (goal_arity >= 0);
@@ -210,7 +212,8 @@ let saturate ?(delta=0) metasenv subst context ty goal_arity =
    | NCic.Prod (name,s,t) as ty ->
        let metasenv1, _, arg,_ = 
           NCicMetaSubst.mk_meta ~attrs:[`Name name] metasenv context
-           (`WithType s) in
+           ~with_type:s `IsTerm 
+       in
        let t, metasenv1, args, pno = 
            aux metasenv1 (NCicSubstitution.subst arg t) 
        in
@@ -247,6 +250,11 @@ let eq_class_of hdb t1 =
 ;;
 
 let look_for_hint hdb metasenv subst context t1 t2 =
+  if NDiscriminationTree.NCicIndexable.path_string_of t1 =
+          [Discrimination_tree.Variable] || 
+     NDiscriminationTree.NCicIndexable.path_string_of t2 =
+             [Discrimination_tree.Variable] then [] else begin
+
   debug(lazy ("KEY1: "^NCicPp.ppterm ~metasenv ~subst ~context t1));
   debug(lazy ("KEY2: "^NCicPp.ppterm ~metasenv ~subst ~context t2));
 (*
@@ -277,7 +285,8 @@ let look_for_hint hdb metasenv subst context t1 t2 =
            | NCic.LetIn (name,ty,bo,t) ->
                let m,_,i,_=
                  NCicMetaSubst.mk_meta ~attrs:[`Name name] m context
-                  (`WithType ty)in
+                  ~with_type:ty `IsTerm 
+               in
                let t = NCicSubstitution.subst i t in
                aux () (m, (i,bo)::l) t
            | t -> NCicUntrusted.map_term_fold_a (fun _ () -> ()) () aux acc t
@@ -314,6 +323,7 @@ let look_for_hint hdb metasenv subst context t1 t2 =
     rc)));
 
   rc
+             end
 ;;
 
 let pp_hint t p =