functorial abstraction over term blobs

[helm.git] / helm / software / components / ng_paramodulation / index.ml

diff --git a/helm/software/components/ng_paramodulation/index.ml b/helm/software/components/ng_paramodulation/index.ml
index 123c51650b52b827a4b3889ee5d06aa713f492ab..d07fba8a44a78b180a5578912e03c1e43c0080f0 100644 (file)
--- a/helm/software/components/ng_paramodulation/index.ml
+++ b/helm/software/components/ng_paramodulation/index.ml
@@ -11,68 +11,70 @@
 
 (* $Id$ *)
 
-module type Comparable =
-  sig
-    type t
-    val is_eq : t -> t -> bool
-  end
+module Index(B : Terms.Blob) = struct
+  module U = Terms.Utils(B)
 
-module C : Comparable =
-  struct 
-    type t = NCic.term
-    let is_eq a b = Pervasives.compare a b = 0 (* TODO: optimize *)
-  end
+  module ClauseOT =
+    struct 
+      type t = Terms.direction * B.t Terms.unit_clause
+ 
+      let compare (d1,uc1) (d2,uc2) = 
+        let c = Pervasives.compare d1 d2 in
+        if c <> 0 then c else U.compare_unit_clause uc1 uc2
+      ;;
+    end
 
-  (*
-module C : Comparable =
-  struct 
-    type t = Cic.term
-    let is_eq a b = Pervasives.compare a b = 0 (* TODO: optimize *)
-  end
-*)
+  module ClauseSet : 
+    Set.S with type elt = Terms.direction * B.t Terms.unit_clause
+    = Set.Make(ClauseOT)
 
-open Discrimination_tree
+  open Discrimination_tree
 
-module ClauseOT : Set.OrderedType 
-                with type t = Terms.direction * C.t Terms.unit_clause = 
- struct 
-  type t = Terms.direction * C.t Terms.unit_clause
-  let compare (d1,(id1,_,_,_)) (d2,(id2,_,_,_)) = 
-          Pervasives.compare (d1,id1) (d2,id2)
- end
+  module FotermIndexable : Indexable with
+    type constant_name = B.t and
+    type input = B.t Terms.foterm 
+  =
+    struct
 
-module ClauseSet = Set.Make(ClauseOT)
+      type input = B.t Terms.foterm
+      type constant_name = B.t
 
-module FotermIndexable : Indexable
-with type input = C.t Terms.foterm and 
-     type constant_name = C.t = struct
+      let path_string_of =
+        let rec aux arity = function
+          | Terms.Leaf a -> [Constant (a, arity)]
+          | Terms.Var i -> assert (arity = 0); [Variable]
+          | Terms.Node (Terms.Var _::_) -> assert false
+          | Terms.Node ([] | [ _ ] ) -> assert false
+          | Terms.Node (Terms.Node _::_) -> assert false
+          | Terms.Node (hd::tl) ->
+              aux (List.length tl) hd @ List.flatten (List.map (aux 0) tl) 
+        in 
+          aux 0
+      ;;
 
-type input = C.t Terms.foterm
-type constant_name = C.t
+      let compare e1 e2 = 
+        match e1,e2 with 
+        | Constant (a1,ar1), Constant (a2,ar2) ->
+            let c = B.compare a1 a2 in
+            if c <> 0 then c else Pervasives.compare ar1 ar2
+        | Variable, Variable -> 0
+        | Constant _, Variable -> ~-1
+        | Variable, Constant _ -> 1
+        | Proposition, _ | _, Proposition
+        | Datatype, _ | _, Datatype
+        | Dead, _ | _, Dead
+        | Bound _, _ | _, Bound _ -> assert false
+      ;;
 
-let path_string_of =
-  let rec aux arity = function
-    | Terms.Leaf a -> [Constant (a, arity)]
-    | Terms.Var i -> assert (arity = 0); [Variable]
-    | Terms.Node (Terms.Var _::_) -> assert false
-    | Terms.Node ([] | [ _ ] ) -> assert false
-    | Terms.Node (Terms.Node _::_) -> assert false
-    | Terms.Node (hd::tl) ->
-        aux (List.length tl) hd @ List.flatten (List.map (aux 0) tl) 
-  in 
-    aux 0
-;;
+      let string_of_path l = String.concat "." (List.map (fun _ -> "*") l) ;;
 
-let compare e1 e2 = 
-  match e1,e2 with 
-  | Constant (a1,ar1), Constant (a2,ar2) ->
-      if C.is_eq a1 a2 then Pervasives.compare ar1 ar2
-      else Pervasives.compare e1 e2 (* TODO: OPTIMIZE *)
-  | _ -> Pervasives.compare e1 e2
-;;
+    end
 
-let string_of_path l = String.concat "." (List.map (fun _ -> "*") l) ;;
+    module DT : DiscriminationTree with
+      type constant_name = B.t and 
+      type input = B.t Terms.foterm and 
+      type data = ClauseSet.elt and 
+      type dataset = ClauseSet.t
+    = Make(FotermIndexable)(ClauseSet)
 
 end
-
-module DiscriminationTree = Make(FotermIndexable)(ClauseSet)