X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_paramodulation%2Fterms.mli;h=e0576d1f3e95dea87cd8d3955b125ac41e4f9588;hb=1eb00eff3c3a5f67c3a200a82098c97f4fbe0c5e;hp=c16b6f9b7212dd564aa07c67b4a39a1ee8eb86e6;hpb=6b0a195b180e3526af7b55771b2df7b10acd7c30;p=helm.git

diff --git a/helm/software/components/ng_paramodulation/terms.mli b/helm/software/components/ng_paramodulation/terms.mli
index c16b6f9b7..e0576d1f3 100644
--- a/helm/software/components/ng_paramodulation/terms.mli
+++ b/helm/software/components/ng_paramodulation/terms.mli
@@ -20,8 +20,11 @@ type 'a substitution = (int * 'a foterm) list
 
 type comparison = Lt | Eq | Gt | Incomparable
 
-type rule = SuperpositionRight | SuperpositionLeft | Demodulation
+type rule = Superposition | Demodulation
+
+(* A Discrimination tree is a map: foterm |-> (dir, clause) *)
 type direction = Left2Right | Right2Left | Nodir
+
 type position = int list
 
 type 'a proof =
@@ -51,7 +54,7 @@ type 'a passive_clause = int * 'a unit_clause (* weight * equation *)
 
 module M : Map.S with type key = int 
 
-type 'a bag = 'a unit_clause M.t
+type 'a bag = ('a unit_clause * bool) M.t
 
 module type Blob =
   sig
@@ -62,14 +65,16 @@ module type Blob =
     type t
     val eq : t -> t -> bool
     val compare : t -> t -> int
-    val is_eq_predicate : t -> bool
+    val eqP : t
     (* TODO: consider taking in input an imperative buffer for Format 
      *  val pp : Format.formatter -> t -> unit
      * *)
     val pp : t -> string
 
-    val embed : t -> t foterm 
+    type input
+    val embed : input -> t foterm
     (* saturate [proof] [type] -> [proof] * [type] *)
-    val saturate : t -> t -> t foterm * t foterm
+    val saturate : input -> input -> t foterm * t foterm
+
   end