X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_paramodulation%2Fpp.ml;h=29f257697a0cd50bc5c887baf5c23a1eef6c50af;hb=c091ca7a030a85a529543de98e45c54284028b63;hp=aff9224e00bf1d140ef6d339f9ce6620fd62b56e;hpb=ddd751449e73a22af523ce78ce1d8f0bb211e941;p=helm.git

diff --git a/helm/software/components/ng_paramodulation/pp.ml b/helm/software/components/ng_paramodulation/pp.ml
index aff9224e0..29f257697 100644
--- a/helm/software/components/ng_paramodulation/pp.ml
+++ b/helm/software/components/ng_paramodulation/pp.ml
@@ -11,9 +11,137 @@
 
 (* $Id: nCic.ml 9058 2008-10-13 17:42:30Z tassi $ *)
 
-let pp_foterm = assert false
-let pp_proof = assert false
-let pp_substitution = assert false
-let pp_unit_clause = assert false
+module Pp (B : Terms.Blob) = struct
 
+(* Main pretty printing functions *)
 
+let pp_foterm ~formatter:f t =
+  let rec aux ?(toplevel=false) = function
+    | Terms.Leaf x ->
+	Format.fprintf f "%s" (B.pp x)
+    | Terms.Var i ->
+	Format.fprintf f "?%d" i
+    | Terms.Node (hd::tl) ->
+	Format.fprintf f "@[<hov 2>";
+	if not toplevel then Format.fprintf f "(";
+	aux hd;
+	List.iter (fun x -> Format.fprintf f "@;";
+		     aux x) tl;
+	if not toplevel then Format.fprintf f ")";
+	Format.fprintf f "@]"
+    | _ ->
+	assert false
+  in
+    aux ~toplevel:true t
+;;
+
+let string_of_rule = function
+  | Terms.Superposition -> "Super"
+  | Terms.Demodulation ->  "Demod"
+;;
+
+let string_of_direction = function
+    | Terms.Left2Right -> "Left to right"
+    | Terms.Right2Left -> "Right to left"
+    | Terms.Nodir -> "No direction"
+;;
+
+let pp_substitution ~formatter:f subst =
+     (List.iter
+       (fun (i, t) ->
+          (Format.fprintf f "?%d -> " i;
+	   pp_foterm f t)
+       )
+       subst)
+;;
+
+let pp_proof bag ~formatter:f p =
+  let rec aux eq = function
+    | Terms.Exact t -> 
+        Format.fprintf f "%d: Exact (" eq;
+        pp_foterm f t;
+        Format.fprintf f ")@;";
+    | Terms.Step (rule,eq1,eq2,dir,pos,subst) ->
+        Format.fprintf f "%d: %s("
+          eq (string_of_rule rule);
+	Format.fprintf f "|%d with %d dir %s))" eq1 eq2
+	  (string_of_direction dir);
+	let (_, _, _, proof1) = Terms.M.find eq1 bag in
+	let (_, _, _, proof2) = Terms.M.find eq2 bag in
+	  Format.fprintf f "@[<v 2>";
+          aux eq1 proof1;	    
+          aux eq2 proof2;
+	  Format.fprintf f "@]";
+  in
+    Format.fprintf f "@[<v>";
+    aux 0 p;
+    Format.fprintf f "@]"
+;;
+
+let string_of_comparison = function
+  | Terms.Lt -> "=<="
+  | Terms.Gt -> "=>="
+  | Terms.Eq -> "==="
+  | Terms.Incomparable -> "=?="
+
+let pp_unit_clause ~formatter:f c =
+  let (id, l, vars, proof) = c in
+    Format.fprintf f "Id : %3d, " id ;
+    match l with
+      | Terms.Predicate t ->
+	  pp_foterm f t
+      | Terms.Equation (lhs, rhs, ty, comp) ->
+	  Format.fprintf f "@[<hv>{";
+	  pp_foterm f ty;
+          Format.fprintf f "}:@;@[<hv>";
+	  pp_foterm f lhs;
+          Format.fprintf f "@;%s@;" (string_of_comparison comp);
+	  pp_foterm f rhs;
+          Format.fprintf f "@]@;[%s] by %s@]"
+            (String.concat ", " (List.map string_of_int vars))
+            (match proof with
+            | Terms.Exact _ -> "axiom"
+            | Terms.Step (rule, id1, id2, _, p, _) -> 
+                 Printf.sprintf "%s %d with %d at %s" 
+                  (string_of_rule rule)
+                  id1 id2 (String.concat
+                 "," (List.map string_of_int p)))
+;;
+
+let pp_bag ~formatter:f bag = 
+  Format.fprintf f "@[<v>";
+  Terms.M.iter 
+  (fun _ c -> pp_unit_clause ~formatter:f c;Format.fprintf f "@;") bag;
+  Format.fprintf f "@]"
+;;
+
+(* String buffer implementation *)
+let on_buffer f t = 
+  let buff = Buffer.create 100 in
+  let formatter = Format.formatter_of_buffer buff in
+  f ~formatter:formatter t;
+  Format.fprintf formatter "@?";
+  Buffer.contents buff
+;;
+
+let pp_bag =
+  on_buffer pp_bag
+;;
+
+let pp_foterm =
+ on_buffer pp_foterm
+;;
+
+let pp_substitution =
+  on_buffer pp_substitution
+;;
+
+let pp_proof bag =
+  on_buffer (pp_proof bag)
+;;
+
+let pp_unit_clause =
+  on_buffer pp_unit_clause
+;;
+
+end