X-Git-Url: http://git.nguyen.vg/gitweb/?a=blobdiff_plain;f=ata.ml;h=eed81bc3d6d368a919e91841a449ea0a884a3115;hb=329088598ab63bc2d67ff0dfc4f54e90f5d4f283;hp=0132b36cb04b534f5b0d378c1187385c868ffc54;hpb=8b3283c30149065d761e38cf0818c8ede62d48ab;p=SXSI%2Fxpathcomp.git

diff --git a/ata.ml b/ata.ml
index 0132b36..eed81bc 100644
--- a/ata.ml
+++ b/ata.ml
@@ -1,6 +1,6 @@
 INCLUDE "debug.ml"
 INCLUDE "utils.ml"
-
+open Camlp4.Struct
 type jump_kind = [ `TAG of Tag.t | `CONTAINS of string | `NOTHING ]
 
 (* Todo : move elsewhere *)
@@ -25,14 +25,7 @@ struct
     if x < 0 then failwith (Printf.sprintf "State: Assertion %i < 0 failed" x)
 end
 
-module StateSet = struct
-  include Ptset.Int
-  let print ppf s = 
-    Format.pp_print_string ppf "{ ";
-    iter (fun i -> Format.fprintf ppf "%i " i) s;
-    Format.pp_print_string ppf "}";
-    Format.pp_print_flush ppf ()
-end
+module StateSet = Ptset.Int
   
 module Formula =
 struct
@@ -41,6 +34,7 @@ struct
       | Or of 'hcons * 'hcons
       | And of 'hcons * 'hcons
       | Atom of ([ `Left | `Right  | `LLeft | `RRight  ]*bool*State.t)
+
     type 'hcons node = {
       pos : 'hcons expr;
       mutable neg : 'hcons;
@@ -49,34 +43,33 @@ struct
     }
 	
     external hash_const_variant : [> ] -> int = "%identity" 
-    module rec HNode : Hcons.S with type data = Node.t = Hcons.Make (Node)
-    and Node : Hashtbl.HashedType  with type t = HNode.t node =
+    module rec Node : Hcons.S with type data = Data.t = Hcons.Make (Data)
+    and Data : Hashtbl.HashedType  with type t = Node.t node =
     struct 
-    type t =  HNode.t node
+    type t =  Node.t node
     let equal x y = x.size == y.size &&
       match x.pos,y.pos with
-      | False,False
-      | True,True -> true
-      | Or(xf1,xf2),Or(yf1,yf2) 
-      | And(xf1,xf2),And(yf1,yf2)  -> (HNode.equal xf1 yf1) && (HNode.equal xf2 yf2)
-      | Atom(d1,p1,s1), Atom(d2,p2,s2) -> d1 == d2 && (p1==p2) && s1 == s2
-      | _ -> false
+	| a,b when a == b -> true
+	| Or(xf1,xf2),Or(yf1,yf2) 
+	| And(xf1,xf2),And(yf1,yf2)  -> (xf1 == yf1) && (xf2 == yf2)
+	| Atom(d1,p1,s1), Atom(d2,p2,s2) -> d1 == d2 && (p1==p2) && s1 == s2
+	| _ -> false
     let hash f = 
       match f.pos with
 	| False -> 0
 	| True -> 1
-	| Or (f1,f2) -> HASHINT3(PRIME2,HNode.uid f1,HNode.uid f2)
-	| And (f1,f2) -> HASHINT3(PRIME3,HNode.uid f1,HNode.uid f2)
+	| Or (f1,f2) -> HASHINT3(PRIME2,f1.Node.id, f2.Node.id)
+	| And (f1,f2) -> HASHINT3(PRIME3,f1.Node.id,f2.Node.id)
 	| Atom(d,p,s) -> HASHINT4(PRIME4,hash_const_variant d,vb p,s)	    
     end
 
-    type t = HNode.t
-    let hash = HNode.hash 
-    let uid = HNode.uid 
-    let equal = HNode.equal 
-    let expr f = (HNode.node f).pos
-    let st f = (HNode.node f ).st
-    let size f = (HNode.node f).size
+    type t = Node.t
+    let hash x = x.Node.key
+    let uid x = x.Node.id
+    let equal = Node.equal 
+    let expr f = f.Node.node.pos 
+    let st f = f.Node.node.st
+    let size f = f.Node.node.size
       
     let prio f = 
       match expr f with
@@ -115,10 +108,10 @@ struct
 
 
     let cons pos neg s1 s2 size1 size2 =
-      let nnode = HNode.make { pos = neg; neg = (Obj.magic 0); st = s2; size = size2 } in
-      let pnode = HNode.make { pos = pos; neg = nnode ; st = s1; size = size1 }
+      let nnode = Node.make { pos = neg; neg = (Obj.magic 0); st = s2; size = size2 } in
+      let pnode = Node.make { pos = pos; neg = nnode ; st = s1; size = size1 }
       in 
-	(HNode.node nnode).neg <- pnode; (* works because the neg field isn't taken into
+	(Node.node nnode).neg <- pnode; (* works because the neg field isn't taken into
 					    account for hashing ! *)
 	pnode,nnode
 
@@ -134,7 +127,7 @@ struct
 	| `RRight -> empty_triple,(StateSet.empty,si,si)
       in fst (cons (Atom(d,p,s)) (Atom(d,not p,s)) ss ss 1 1)
 
-    let not_ f = (HNode.node f).neg
+    let not_ f = f.Node.node.neg
     let union_hex  ((l1,ll1,lll1),(r1,rr1,rrr1))  ((l2,ll2,lll2),(r2,rr2,rrr2)) =
       (StateSet.mem_union l1 l2 ,StateSet.mem_union ll1 ll2,StateSet.mem_union lll1 lll2),
       (StateSet.mem_union r1 r2 ,StateSet.mem_union rr1 rr2,StateSet.mem_union rrr1 rrr2)
@@ -167,7 +160,7 @@ struct
       let psize = (size f1) + (size f2) in
       let nsize = (size (not_ f1)) + (size (not_ f2)) in
       let sp,sn = merge_states f1 f2 in
-	fst (cons (Or(f1,f2)) (And(not_ f1,not_ f2)) sp sn psize nsize)
+      fst (cons (Or(f1,f2)) (And(not_ f1,not_ f2)) sp sn psize nsize)
 	      
 	      	      
     let and_ f1 f2 = 
@@ -201,16 +194,18 @@ end
   
 module Transition = struct
   
-  type node = State.t*bool*Formula.t*bool
+  type node = State.t*TagSet.t*bool*Formula.t*bool
   include Hcons.Make(struct
 		       type t = node
-		       let hash (s,m,f,b) = HASHINT4(s,Formula.uid f,vb m,vb b)
-		       let equal (s,b,f,m) (s',b',f',m') = 
-			 s == s' && b==b' && m==m' && Formula.equal f f' 
+		       let hash (s,ts,m,f,b) = HASHINT5(s,TagSet.uid ts,Formula.uid f,vb m,vb b)
+		       let equal (s,ts,b,f,m) (s',ts',b',f',m') = 
+			 s == s' && ts == ts' && b==b' && m==m' && f == f'
 		     end)
     
-  let print ppf f = let (st,mark,form,b) = node f in
-    Format.fprintf ppf "%i %s" st (if mark then "⇒" else "→");
+  let print ppf f = let (st,ts,mark,form,b) = node f in
+    Format.fprintf ppf "(%i, " st;
+    TagSet.print ppf ts;
+    Format.fprintf ppf ") %s" (if mark then "⇒" else "→");
     Formula.print ppf form;
     Format.fprintf ppf "%s%!" (if b then " (b)" else "")
 
@@ -219,27 +214,25 @@ module Transition = struct
   let ( ?< ) x = x
   let ( >< ) state (l,mark) = state,(l,mark,false)
   let ( ><@ ) state (l,mark) = state,(l,mark,true)
-  let ( >=> ) (state,(label,mark,bur)) form = (state,label,(make (state,mark,form,bur)))
+  let ( >=> ) (state,(label,mark,bur)) form = (state,label,(make (state,label,mark,form,bur)))
   end
 
 end
 
-module SetTagKey =
-struct 
-  type t = Ptset.Int.t*Tag.t 
-  let equal (s1,t1) (s2,t2) =  (t1 == t2) &&  Ptset.Int.equal s1 s2
-  let hash (s,t) = HASHINT2(Ptset.Int.uid s, t)
-end
-
 module TransTable = Hashtbl
-module CachedTransTable = Hashtbl.Make(SetTagKey)
  
 module Formlist = struct 
-  include Hlist.Make(Transition) 
+  include Hlist.Make(Transition)
   let print ppf fl = 
     iter (fun t -> Transition.print ppf t; Format.pp_print_newline ppf ()) fl
 end
 
+module Formlistlist = 
+struct
+  include Hlist.Make(Formlist)
+  let print ppf fll =
+    iter (fun fl -> Formlist.print ppf fl; Format.pp_print_newline ppf ())fll
+end
   
 type 'a t = { 
     id : int;
@@ -263,14 +256,14 @@ let dump ppf a =
 		       if y-x == 0 then TagSet.compare tsy tsx else y-x) l in
   let maxh,maxt,l_print = 
     List.fold_left (
-      fun (maxh,maxt,l) ((ts,q),(_,b,f,_)) ->			  
+      fun (maxh,maxt,l) ((ts,q),(_,_,b,f,_)) ->			  
 	let s = 
 	  if TagSet.is_finite ts 
 	  then "{" ^ (TagSet.fold (fun t a -> a ^ " '" ^ (Tag.to_string t)^"'") ts "") ^" }"
 	  else let cts = TagSet.neg ts in
-	    if TagSet.is_empty cts then "*" else
-	    (TagSet.fold (fun t a -> a ^ " " ^ (Tag.to_string t)) cts "*\\{"
-	    )^ "}"
+	  if TagSet.is_empty cts then "*" else
+	  (TagSet.fold (fun t a -> a ^ " " ^ (Tag.to_string t)) cts "*\\{"
+	  )^ "}"
 	in
 	let s = Printf.sprintf "(%s,%i)" s q in
 	let s_frm =
@@ -289,48 +282,10 @@ let dump ppf a =
 module FormTable = Hashtbl.Make(struct
 				  type t = Formula.t*StateSet.t*StateSet.t
 				  let equal (f1,s1,t1) (f2,s2,t2) =
-				    Formula.equal f1 f2 && StateSet.equal s1 s2 && StateSet.equal t1 t2
+				    f1 == f2 && s1 == s2 && t1 == t2
 				  let hash (f,s,t) = 
 				    HASHINT3(Formula.uid f ,StateSet.uid s,StateSet.uid t)
 				end)
-(* Too slow  
-module MemoForm = Memoizer.Make(
-
-module F = Formula
-(*
-let eval_form_bool = 
-  MemoForm.make_rec( 
-    fun eval (f, ((s1,s2) as sets)) ->
-      match F.expr f with
-	| F.True -> true,true,true
-	| F.False -> false,false,false
-	| F.Atom((`Left|`LLeft),b,q) ->
-	    if b == (StateSet.mem q s1) 
-	    then (true,true,false) 
-	    else false,false,false
-	| F.Atom(_,b,q) -> 
-	    if b == (StateSet.mem q s2) 
-	    then (true,false,true)
-	    else false,false,false			
-	| F.Or(f1,f2) ->	    
-	    let b1,rl1,rr1 = eval (f1,sets)
-	    in
-	      if b1 && rl1 && rr1 then (true,true,true)  else
-		let b2,rl2,rr2 = eval (f2,sets)  in
-		let rl1,rr1 = if b1 then rl1,rr1 else false,false
-		and rl2,rr2 = if b2 then rl2,rr2 else false,false
-		in (b1 || b2, rl1||rl2,rr1||rr2)
-		     
-	| F.And(f1,f2) -> 
-	    let b1,rl1,rr1 = eval (f1,sets) in
-	      if b1 && rl1 && rr1 then (true,true,true) else
-		if b1 then 
-		  let b2,rl2,rr2 = eval (f2,sets) in
-		    if b2 then (true,rl1||rl2,rr1||rr2) else (false,false,false)
-		else (false,false,false) 	    
-  )
-
-*) *)
 module F = Formula
 
 let eval_form_bool = 
@@ -371,63 +326,72 @@ let eval_form_bool =
 		  | _ -> assert false
 	      in FormTable.add h_f (f,s1,s2) r;r
       in loop f
+
 	   
-module FTable = Hashtbl.Make(
-  struct
-    type t = Formlist.t*StateSet.t*StateSet.t
-    let equal (f1,s1,t1) (f2,s2,t2) =
-      Formlist.equal f1 f2 && StateSet.equal s1 s2 && StateSet.equal t1 t2;;
-    let hash (f,s,t) =  HASHINT3(Formlist.uid f ,StateSet.uid s,StateSet.uid t);;
-  end)
-
-(*
-module MemoFormlist = Memoizer.Make(FTable)
-  
- Too slow 
-      let eval_formlist = MemoFormlist.make_rec (
-	fun eval (fl,((s1,s2)as sets)) ->
-	  match Formlist.node fl with
-	    | Formlist.Nil -> StateSet.empty,false,false,false,false
-	    | Formlist.Cons(f,fll) ->
-		let q,mark,f,_ = Transition.node f in
-		let b,b1,b2 = eval_form_bool f s1 s2 in
-		let s,b',b1',b2',amark = eval (fll,sets) in
-		  if b then (StateSet.add q s, b, b1'||b1,b2'||b2,mark||amark)
-		  else s,b',b1',b2',amark )
-*)
-
-
-
-      let eval_formlist =
-	let h_f = FTable.create BIG_H_SIZE in
-	  fun s1 s2 fl  ->
-	    let rec loop fl =
-	      let key = (fl,s1,s2) in
-		try 
-		  FTable.find h_f key
-		with 
-		  | Not_found  ->
-		      match Formlist.node fl with
-			| Formlist.Nil -> StateSet.empty,false,false,false,false
-			| Formlist.Cons(f,fll) ->
-			    let q,mark,f,_ = Transition.node f in
-			    let b,b1,b2 = eval_form_bool f s1 s2 in
-			    let s,b',b1',b2',amark = loop fll in
-			    let r = if b then (StateSet.add q s, b, b1'||b1,b2'||b2,mark||amark)
-			    else s,b',b1',b2',amark 
-			    in FTable.add h_f key r;r
-	    in loop fl
-	      
-    let tags_of_state a q = 
-      Hashtbl.fold  
-	(fun p l acc -> 
-	   if p == q then List.fold_left 
-	     (fun acc (ts,t) -> 
-		let _,_,_,aux = Transition.node t in
-		  if aux then acc else
-		    TagSet.cup ts acc) acc l
-	   
-	   else acc) a.trans TagSet.empty
+module FTable = Hashtbl.Make(struct
+			       type t = Tag.t*Formlist.t*StateSet.t*StateSet.t
+			       let equal (tg1,f1,s1,t1) (tg2,f2,s2,t2) =
+				 tg1 == tg2 && f1 == f2 &&  s1 == s2 && t1 == t2;;
+			       let hash (tg,f,s,t) =  HASHINT4(tg,Formlist.uid f ,StateSet.uid s,StateSet.uid t);;
+			     end)
+
+
+let h_f = FTable.create BIG_H_SIZE 
+type merge_conf = NO | MARK | ONLY1 | ONLY2 | ONLY12 | MARK1 | MARK2 | MARK12
+
+let eval_formlist tag s1 s2 fl =
+  let rec loop fl =
+          try 
+	    FTable.find h_f (tag,fl,s1,s2)
+	  with 
+	    | Not_found  -> 
+		match Formlist.node fl with
+		  | Formlist.Cons(f,fll) ->
+		      let q,ts,mark,f,_ = Transition.node f in
+		      let b,b1,b2 = 
+			if TagSet.mem tag ts then eval_form_bool f s1 s2 else (false,false,false)
+		      in
+		      let (s,(b',b1',b2',amark)) as res = loop fll in
+		      let r = if b then (StateSet.add q s, (b, b1'||b1,b2'||b2,mark||amark))
+		      else res
+		      in FTable.add h_f (tag,fl,s1,s2) r;r
+		  | Formlist.Nil -> StateSet.empty,(false,false,false,false)
+  in 
+  let r,conf = loop fl
+  in
+  r,(match  conf with
+    | (false,_,_,_) -> NO
+    | (_,false,false,false) -> NO
+    | (_,true,false,false) -> ONLY1
+    | (_,false,true,false) -> ONLY2
+    | (_,true,true,false) -> ONLY12
+    | (_,false,false,true) -> MARK
+    | (_,true,false,true) -> MARK1
+    | (_,false,true,true) -> MARK2
+    | _ -> MARK12)
+
+let bool_of_merge conf =
+  match  conf with
+    | NO -> false,false,false,false
+    | ONLY1 -> true,true,false,false
+    | ONLY2 -> true,false,true,false 
+    | ONLY12 -> true,true,true,false 
+    | MARK -> true,false,false,true
+    | MARK1 -> true,true,false,true
+    | MARK2 -> true,false,true,true
+    | MARK12 -> true,true,true,true
+
+
+let tags_of_state a q = 
+  Hashtbl.fold  
+    (fun p l acc -> 
+       if p == q then List.fold_left 
+	 (fun acc (ts,t) -> 
+	    let _,_,_,_,aux = Transition.node t in
+	      if aux then acc else
+		TagSet.cup ts acc) acc l
+	 
+       else acc) a.trans TagSet.empty
       
       
 
@@ -442,27 +406,29 @@ module MemoFormlist = Memoizer.Make(FTable)
       match b with
 	| `Positive s -> let r = Ptset.Int.inter a s in (r,Ptset.Int.mem Tag.pcdata r, true)
 	| `Negative s -> let r = Ptset.Int.diff a s in (r, Ptset.Int.mem Tag.pcdata r, false)
-
-    let mk_nil_ctx x _ = Tree.mk_nil x
-    let next_sibling_ctx x _ = Tree.next_sibling x 
-    let r_ignore _ x = x
       
 
     module type ResultSet = 
     sig
       type t
+      type elt = [` Tree ] Tree.node
       val empty : t
-      val cons : Tree.t -> t -> t
+      val cons : elt -> t -> t
       val concat : t -> t -> t
-      val iter : (Tree.t -> unit) -> t -> unit
-      val fold : (Tree.t -> 'a -> 'a) -> t -> 'a -> 'a
-      val map : (Tree.t -> Tree.t) -> t -> t
+      val iter : ( elt -> unit) -> t -> unit
+      val fold : ( elt -> 'a -> 'a) -> t -> 'a -> 'a
+      val map : ( elt -> elt) -> t -> t
       val length : t -> int
+      val merge : merge_conf -> elt -> t -> t -> t 
+      val mk_quick_tag_loop : (elt -> elt -> 'a*t array) -> 'a -> int -> Tree.t -> Tag.t -> (elt -> elt -> 'a*t array)
+      val mk_quick_star_loop : (elt -> elt -> 'a*t array) -> 'a -> int -> Tree.t -> (elt -> elt -> 'a*t array)
     end
 
     module Integer : ResultSet =
     struct
       type t = int
+      type elt = [`Tree] Tree.node
+
       let empty = 0
       let cons _ x = x+1
       let concat x y = x + y
@@ -470,12 +436,40 @@ module MemoFormlist = Memoizer.Make(FTable)
       let fold _ _ _ = failwith "fold not implemented"
       let map _ _ = failwith "map not implemented"
       let length x = x
+      let merge2 conf t res1 res2 = 
+	let rb,rb1,rb2,mark = conf in
+	if rb then
+	  let res1 = if rb1 then res1 else 0
+	  and res2 = if rb2 then res2 else 0
+	  in
+	    if mark then 1+res1+res2
+	    else res1+res2
+	else 0
+      let merge conf t res1 res2 = 
+	match conf with
+	    NO -> 0
+	  | MARK -> 1
+	  | ONLY12 -> res1+res2
+	  | ONLY1 -> res1
+	  | ONLY2 -> res2
+	  | MARK12 -> res1+res2+1
+	  | MARK1 -> res1+1
+	  | MARK2 -> res2+1
+
+      let mk_quick_tag_loop _ sl ss tree tag = ();
+	fun t ctx ->
+	  (sl, Array.make ss (Tree.subtree_tags tree tag t))
+      let mk_quick_star_loop _ sl ss tree = ();
+	fun t ctx -> 
+	  (sl, Array.make ss (Tree.subtree_elements tree t))
+	  
     end
 
-    module IdSet : ResultSet = 
+    module IdSet : ResultSet= 
     struct
+      type elt = [`Tree] Tree.node
       type node = Nil 
-		  | Cons of Tree.t * node 
+		  | Cons of elt * node 
 		  | Concat of node*node
    
       and t = { node : node;
@@ -512,10 +506,152 @@ module MemoFormlist = Memoizer.Make(FTable)
 	  | Concat(t1,t2) -> Concat(loop t1,loop t2)
 	in
 	  { l with node = loop l.node }
-
-	   
+	    
+      let merge conf t res1 res2 = 
+	match conf with
+	   NO -> empty
+	  | MARK -> cons t empty
+	  | ONLY1 -> res1
+	  | ONLY2 -> res2
+	  | ONLY12 -> { node = (Concat(res1.node,res2.node));
+			length = res1.length + res2.length ;}
+	  | MARK12 -> { node = Cons(t,(Concat(res1.node,res2.node)));
+			length = res1.length + res2.length + 1;}
+	  | MARK1 -> { node = Cons(t,res1.node);
+			length = res1.length + 1;}
+	  | MARK2 -> { node = Cons(t,res2.node);
+		       length = res2.length + 1;}
+
+      let mk_quick_tag_loop f _ _ _ _ = f
+      let mk_quick_star_loop f _ _ _ = f
     end
+    module GResult(Doc : sig val doc : Tree.t end) = struct
+      type bits
+      type elt = [` Tree] Tree.node
+      external create_empty : int -> bits = "caml_result_set_create"
+      external set : bits -> int -> unit = "caml_result_set_set"
+      external next : bits -> int -> int = "caml_result_set_next"
+      external clear : bits -> elt -> elt -> unit = "caml_result_set_clear"
+      external set_tag_bits : bits -> Tag.t -> Tree.t -> elt -> elt = "caml_set_tag_bits"
+      type t = 
+	 { segments : elt list;
+	   bits : bits;
+	 }
+
+      let ebits = 
+	let size = (Tree.subtree_size Doc.doc Tree.root) in
+	create_empty (size*2+1)
+
+      let empty = { segments = [];
+		    bits = ebits }
+	
+      let cons e t = 
+	let rec loop l = match l with
+	  | [] -> { bits = (set t.bits (Obj.magic e);t.bits);
+		    segments = [ e ] }
+	  | p::r -> 
+	      if Tree.is_binary_ancestor Doc.doc e p then
+	      loop r
+	      else
+	      { bits = (set t.bits (Obj.magic e);t.bits);
+		segments = e::l }
+	in
+	loop t.segments
+		    
+      let concat t1 t2 =
+	if t2.segments == [] then t1
+	else
+	if t1.segments == [] then t2
+	else
+	let h2 = List.hd t2.segments in
+	let rec loop l = match l with
+	  | [] -> t2.segments
+	  | p::r -> 
+	      if Tree.is_binary_ancestor Doc.doc p h2 then
+	      l
+	      else
+	      p::(loop r)
+	in
+	{ bits = t1.bits;
+	  segments = loop t1.segments 
+	}
+
+      let iter f t =
+	let rec loop i = 
+	  if i == -1 then ()
+	  else (f ((Obj.magic i):elt);loop (next t.bits i))
+	in loop (next t.bits 0)
+	  
+      let fold f t acc = 
+	let rec loop i acc = 
+	  if i == -1 then acc
+	  else loop (next t.bits i) (f ((Obj.magic i):elt) acc)
+	in loop (next t.bits 0) acc
+
+      let map _ _ = failwith "noop"
+      let length t = let cpt = ref 0 in
+      iter (fun _ -> incr cpt) t; !cpt
+      
+      let clear_bits t = 
+	let rec loop l = match l with
+	   [] -> ()
+	  | idx::ll ->
+	      clear t.bits idx (Tree.closing Doc.doc idx); loop ll
+	in
+	loop t.segments;empty
+
+      let merge (rb,rb1,rb2,mark) elt t1 t2 =
+	if rb then
+(*	let _ = Printf.eprintf "Lenght before merging is %i %i\n"
+	  (List.length t1.segments) (List.length t2.segments)
+	in *)
+	match t1.segments,t2.segments with
+ 	   [],[] -> if mark then cons elt empty else empty
+	  | [_],[] when rb1 -> if mark then cons elt t1 else t1
+	  | [], [_] when rb2 -> if mark then cons elt t2 else t2
+	  | [_],[_] when rb1 && rb2 -> if mark then cons elt empty else
+	    concat t1 t2
+	  | _ -> 
+	let t1 = if rb1 then t1 else clear_bits t1
+	and t2 = if rb2 then t2 else clear_bits t2
+	in
+	(if mark then cons elt (concat t1 t2)
+	 else concat t1 t2)
+	else
+	let _ = clear_bits t1 in
+	clear_bits t2
+
+      let merge conf t t1 t2 = 
+	match t1.segments,t2.segments,conf with
+	  | _,_,NO -> let _ = clear_bits t1 in clear_bits t2
+	  | [],[],(MARK1|MARK2|MARK12|MARK) -> cons t empty
+	  | [],[],_ -> empty
+	  | [_],[],(ONLY1|ONLY12) -> t1
+	  | [_],[],(MARK1|MARK12) -> cons t t1
+	  | [],[_],(ONLY2|ONLY12) -> t2
+	  | [],[_],(MARK2|MARK12) -> cons t t2
+	  | [_],[_],ONLY12 -> concat t1 t2
+	  | [_],[_],MARK12 -> cons t empty
+	  | _,_,MARK -> let _ = clear_bits t2 in cons t (clear_bits t1)	    
+	  | _,_,ONLY1 -> let _ = clear_bits t2 in t1
+	  | _,_,ONLY2 -> let _ = clear_bits t1 in t2
+	  | _,_,ONLY12 -> concat t1 t2
+	  | _,_,MARK1 -> let _ = clear_bits t2 in cons t t1
+	  | _,_,MARK2 -> let _ = clear_bits t1 in cons t t2
+	  | _,_,MARK12 ->  cons t (concat t1 t2)
+
+      let mk_quick_tag_loop _ sl ss tree tag = ();
+	fun t _ ->	  
+	  let res = empty in
+	  let first = set_tag_bits empty.bits tag tree t in
+	  let res = 
+	    if first == Tree.nil then res else 
+	    cons first res 
+	  in
+	  (sl, Array.make ss res)
 
+      let mk_quick_star_loop f _ _ _ = f
+    end
     module Run (RS : ResultSet) =
     struct
 
@@ -529,166 +665,528 @@ THEN
 INCLUDE "html_trace.ml"
 	      
 END		
-
-      let td_trans = Hashtbl.create 4096
       let mk_fun f s = D_IGNORE_(register_funname f s,f)
       let mk_app_fun f arg s = let g = f arg in 
 	D_IGNORE_(register_funname g ((get_funname f) ^ " " ^ s), g) 
+      let mk_app_fun2 f arg1 arg2 s = let g = f arg1 arg2 in 
+	D_IGNORE_(register_funname g ((get_funname f) ^ " " ^ s), g) 
 
       let string_of_ts tags = (Ptset.Int.fold (fun t a -> a ^ " " ^ (Tag.to_string t) ) tags "{")^ " }"
-	
-      let choose_jump tagset qtags1 qtagsn a f_nil f_text f_t1 f_s1 f_tn f_sn f_notext =
-	let tags1,hastext1,fin1 = inter_text tagset (tags a qtags1) in
-	let tagsn,hastextn,finn = inter_text tagset (tags a qtagsn) in
-	  if (hastext1||hastextn) then f_text  (* jumping to text nodes doesn't work really well *)
-	  else if (Ptset.Int.is_empty tags1) && (Ptset.Int.is_empty tagsn) then f_nil
-	  else if (Ptset.Int.is_empty tagsn) then 
-	    if (Ptset.Int.is_singleton tags1) 
-	    then (* TaggedChild/Sibling *)
-	      let tag = (Ptset.Int.choose tags1) in mk_app_fun f_t1 tag (Tag.to_string tag)
-	    else (* SelectChild/Sibling *)
-	      mk_app_fun f_s1 tags1 (string_of_ts tags1)
-	  else if (Ptset.Int.is_empty tags1) then 
-	    if (Ptset.Int.is_singleton tagsn) 
-	    then (* TaggedDesc/Following *)
-	      let tag = (Ptset.Int.choose tagsn) in  mk_app_fun f_tn tag (Tag.to_string tag)
-	    else (* SelectDesc/Following *)
-	      mk_app_fun f_sn tagsn (string_of_ts tagsn) 
-	  else f_notext
+
+
+      module Algebra =
+	struct
+	  type jump = [ `NIL | `ANY |`ANYNOTEXT | `JUMP ]
+	  type t = jump*Ptset.Int.t*Ptset.Int.t
+	  let jts = function 
+	  | `JUMP -> "JUMP"
+	  | `NIL -> "NIL"
+	  | `ANY -> "ANY"
+	  | `ANYNOTEXT -> "ANYNOTEXT"
+	  let merge_jump (j1,c1,l1) (j2,c2,l2) = 
+	    match j1,j2 with
+	      | _,`NIL -> (j1,c1,l1)
+	      | `NIL,_ -> (j2,c2,l2)
+	      | `ANY,_ -> (`ANY,Ptset.Int.empty,Ptset.Int.empty)
+	      | _,`ANY -> (`ANY,Ptset.Int.empty,Ptset.Int.empty)
+	      | `ANYNOTEXT,_ -> 
+ 		  if Ptset.Int.mem Tag.pcdata (Ptset.Int.union c2 l2) then
+		  (`ANY,Ptset.Int.empty,Ptset.Int.empty)
+		  else
+		  (`ANYNOTEXT,Ptset.Int.empty,Ptset.Int.empty)
+	      | _,`ANYNOTEXT -> 
+		  if Ptset.Int.mem Tag.pcdata (Ptset.Int.union c1 l1) then
+		  (`ANY,Ptset.Int.empty,Ptset.Int.empty)
+		  else
+		  (`ANYNOTEXT,Ptset.Int.empty,Ptset.Int.empty)
+	      | `JUMP,`JUMP -> (`JUMP, Ptset.Int.union c1 c2,Ptset.Int.union l1 l2)
+
+	  let merge_jump_list = function 
+	    | [] -> `NIL,Ptset.Int.empty,Ptset.Int.empty
+	    | p::r -> 
+		List.fold_left (merge_jump) p r
+	      
+	  let labels a s = 
+	    Hashtbl.fold 
+	    (
+	      fun q l acc -> 
+		if (q == s)
+		then 
+
+		  (List.fold_left 
+		      (fun acc (ts,f) ->
+			let _,_,_,_,bur = Transition.node f in
+			if bur then acc else TagSet.cup acc ts) 
+		    acc l)
+		else acc ) a.trans TagSet.empty
+	  exception Found
+	    
+	  let is_rec a s access = 
+	    List.exists
+	      (fun (_,t) -> let _,_,_,f,_ = Transition.node t in
+	      StateSet.mem s ((fun (_,_,x) -> x) (access (Formula.st f)))) (Hashtbl.find a.trans s) 
+		     
+	  let is_final_marking a s =
+	    List.exists (fun (_,t) -> let _,_,m,f,_ = Transition.node t in m&& (Formula.is_true f))
+	      (Hashtbl.find a.trans s)
+	      
+	      
+	  let decide a c_label l_label dir_states dir =
+			
+	    let l = StateSet.fold 
+	      (fun s l -> 
+		 let s_rec = is_rec a s (if dir then fst else snd) in
+		 let s_rec = if dir then s_rec else
+		 (* right move *)
+		 is_rec a s fst
+		 in
+		 let s_lab = labels a s in
+		 let jmp,cc,ll = 
+		   if (not (TagSet.is_finite s_lab)) then
+		   if TagSet.mem Tag.pcdata s_lab then  (`ANY,Ptset.Int.empty,Ptset.Int.empty)
+		   else (`ANYNOTEXT,Ptset.Int.empty,Ptset.Int.empty)
+		   else 
+		   if s_rec 
+		   then (`JUMP,Ptset.Int.empty, TagSet.positive 
+			   (TagSet.cap (TagSet.inj_positive l_label) s_lab))
+		   else (`JUMP,TagSet.positive 
+			   (TagSet.cap (TagSet.inj_positive c_label) s_lab),
+			 Ptset.Int.empty )
+		 in
+		   (if jmp != `ANY 
+		    && jmp != `ANYNOTEXT 
+		    && Ptset.Int.is_empty cc 
+		    && Ptset.Int.is_empty ll
+		    then (`NIL,Ptset.Int.empty,Ptset.Int.empty)
+		    else  (jmp,cc,ll))::l) dir_states []
+	    in merge_jump_list l		 	    
+	    
+	      
+	end 
+
+
+
+      let choose_jump (d,cl,ll) f_nil f_t1 f_s1 f_tn f_sn f_s1n f_notext f_maytext =
+	match d with
+	  | `NIL -> (`NIL,f_nil)
+	  | `ANYNOTEXT -> `ANY,f_notext
+	  | `ANY -> `ANY,f_maytext
+	  | `JUMP -> 
+	      if Ptset.Int.is_empty cl then
+	      if Ptset.Int.is_singleton ll then
+	      let tag = Ptset.Int.choose ll in 
+	      (`TAG(tag),mk_app_fun f_tn tag (Tag.to_string tag))
+	      else
+	      (`MANY(ll),mk_app_fun f_sn ll (string_of_ts ll))
+	      else if Ptset.Int.is_empty ll then
+	      if Ptset.Int.is_singleton cl then
+	      let tag = Ptset.Int.choose cl in 
+	      (`TAG(tag),mk_app_fun f_t1 tag (Tag.to_string tag))
+	      else
+	      (`MANY(cl),mk_app_fun f_s1 cl (string_of_ts cl))
+	      else
+	      (`ANY,mk_app_fun2 f_s1n cl ll ((string_of_ts cl) ^ " " ^ (string_of_ts ll)))
+
+	  | _ -> assert false
 	  
-      let choose_jump_down a b c d =
-	choose_jump a b c d
-	  (mk_fun (Tree.mk_nil) "Tree.mk_nil")
-	  (mk_fun (Tree.text_below) "Tree.text_below")
-	  (mk_fun (fun _ -> Tree.node_child) "[TaggedChild]Tree.node_child") (* !! no tagged_child in Tree.ml *)
-	  (mk_fun (fun _ -> Tree.node_child) "[SelectChild]Tree.node_child") (* !! no select_child in Tree.ml *)
-	  (mk_fun (Tree.tagged_desc) "Tree.tagged_desc")
-	  (mk_fun (fun _ -> Tree.node_child ) "[SelectDesc]Tree.node_child") (* !! no select_desc *)
-	  (mk_fun (Tree.node_child) "Tree.node_child")
-
-      let choose_jump_next a b c d = 
-	choose_jump a b c d
-  	  (mk_fun (fun t _ -> Tree.mk_nil t) "Tree.mk_nil2")
-	  (mk_fun (Tree.text_next) "Tree.text_next")
-	  (mk_fun (fun _ -> Tree.node_sibling_ctx) "[TaggedSibling]Tree.node_sibling_ctx")(* !! no tagged_sibling in Tree.ml *)
-	  (mk_fun (fun _ -> Tree.node_sibling_ctx) "[SelectSibling]Tree.node_sibling_ctx")(* !! no select_sibling in Tree.ml *)
-	  (mk_fun (Tree.tagged_foll_ctx) "Tree.tagged_foll_ctx")
-	  (mk_fun (fun _ -> Tree.node_sibling_ctx) "[SelectFoll]Tree.node_sibling_ctx")(* !! no select_foll *)
-	  (mk_fun (Tree.node_sibling_ctx) "Tree.node_sibling_ctx")	  
-				
-      let get_trans slist tag a t = 
-	try 
-	  Hashtbl.find td_trans (tag,SList.hash slist)
-	with
-	  | Not_found -> 
-	      let fl_list,llist,rlist,ca,da,sa,fa = 
-		SList.fold 
-		  (fun set (fll_acc,lllacc,rllacc,ca,da,sa,fa) -> (* For each set *)
-		     let fl,ll,rr,ca,da,sa,fa = 
-		       StateSet.fold
-	 		 (fun q acc ->			    
-	 		    List.fold_left 
-			      (fun ((fl_acc,ll_acc,rl_acc,c_acc,d_acc,s_acc,f_acc) as acc) 
-				 (ts,t)  ->
-				   if (TagSet.mem tag ts)
-				   then 
-				   let _,_,f,_ = Transition.node t in
-				   let (child,desc,below),(sibl,foll,after) = Formula.st f in
-				     (Formlist.cons t fl_acc,
-				      StateSet.union ll_acc below,
-				      StateSet.union rl_acc after,
-				      StateSet.union child c_acc,
-				      StateSet.union desc d_acc,
-				      StateSet.union sibl s_acc,
-				      StateSet.union foll f_acc)		 
-				   else acc ) acc (
-				try Hashtbl.find a.trans q 
-				with
-				    Not_found -> Printf.eprintf "Looking for state %i, doesn't exist!!!\n%!"
-				      q;[]
-			      )
-			      
-			 ) set (Formlist.nil,StateSet.empty,StateSet.empty,ca,da,sa,fa)
-		     in fl::fll_acc, (SList.cons ll lllacc), (SList.cons rr rllacc),ca,da,sa,fa)
-		  slist ([],SList.nil,SList.nil,StateSet.empty,StateSet.empty,StateSet.empty,StateSet.empty)
-	      in
-		(* Logic to chose the first and next function *)
-	      let tags_below,tags_after = Tree.tags t tag in
-	      let first = choose_jump_down tags_below ca da a
-	      and next = choose_jump_next tags_after sa fa a in	
-	      let v = (fl_list,llist,rlist,first,next) in
-		Hashtbl.add td_trans (tag, SList.hash slist) v; v
-		  
-      let merge rb rb1 rb2 mark t res1 res2 = 
-	if rb 
-	then 
-	  let res1 = if rb1 then res1 else RS.empty
-	  and res2 = if rb2 then res2 else RS.empty
+      let choose_jump_down tree d =
+	choose_jump d
+	  (mk_fun (fun _ -> Tree.nil) "Tree.mk_nil")
+	  (mk_fun (Tree.tagged_child tree) "Tree.tagged_child") 
+	  (mk_fun (Tree.select_child tree) "Tree.select_child")
+	  (mk_fun (Tree.tagged_desc tree) "Tree.tagged_desc")
+	  (mk_fun (Tree.select_desc tree) "Tree.select_desc") 
+	  (mk_fun (fun _ _ -> Tree.first_child tree) "[FIRSTCHILD]Tree.select_child_desc")
+	  (mk_fun (Tree.first_element tree) "Tree.first_element")
+	  (mk_fun (Tree.first_child tree) "Tree.first_child") 
+
+      let choose_jump_next tree d = 
+	choose_jump d
+  	  (mk_fun (fun _ _ -> Tree.nil) "Tree.mk_nil2")
+	  (mk_fun (Tree.tagged_sibling_ctx tree) "Tree.tagged_sibling_ctx")
+	  (mk_fun (Tree.select_sibling_ctx tree) "Tree.select_sibling_ctx")
+	  (mk_fun (Tree.tagged_foll_ctx tree) "Tree.tagged_foll_ctx")
+	  (mk_fun (Tree.select_foll_ctx tree) "Tree.select_foll_ctx")
+	  (mk_fun (fun _ _ -> Tree.next_sibling_ctx tree) "[NEXTSIBLING]Tree.select_sibling_foll_ctx")
+	  (mk_fun (Tree.next_element_ctx tree) "Tree.next_element_ctx")	  
+	  (mk_fun (Tree.next_sibling_ctx tree) "Tree.node_sibling_ctx")	  
+			  
+	  
+      module SListTable = Hashtbl.Make(struct type t = SList.t
+					      let equal = (==)
+					      let hash t = t.SList.Node.id 
+				       end)
+
+
+      module TransCacheOld = 
+      struct
+	type 'a t = Obj.t array SListTable.t
+	let create n = SListTable.create n
+	let dummy = Obj.repr (fun _ -> assert false)
+	let find (h :'a t) tag slist : 'a =
+	  let tab = 
+	    try
+	      SListTable.find h slist
+	    with
+	       Not_found -> 
+		 SListTable.add h slist (Array.create 10000 dummy);
+		 raise Not_found
 	  in
-	    if mark then RS.cons t (RS.concat res1 res2)
-	    else RS.concat res1 res2
-	else RS.empty 
+	  let res = tab.(tag) in
+	  if res == dummy then raise Not_found else (Obj.magic res)
+
+	let add (h : 'a t) tag slist (data : 'a) =
+	  let tab = 
+	    try
+	      SListTable.find h slist
+	    with
+	       Not_found -> 
+		 let arr = Array.create 10000 dummy in
+		 SListTable.add h slist arr;
+		 arr
+	  in
+	  tab.(tag) <- (Obj.repr data)
 	  
+
+      end
+
+      module TransCache = 
+      struct 
+	external get : 'a array -> int ->'a = "%array_unsafe_get"
+	external set : 'a array -> int -> 'a -> unit = "%array_unsafe_set"
+	type fun_tree = [`Tree] Tree.node -> [`Tree] Tree.node -> SList.t*RS.t array
+	type t = fun_tree array array
+	let dummy_cell = [||] 
+	let create n = Array.create n dummy_cell
+	let dummy = fun _ _-> assert false
+	let find h tag slist =
+	  let tab = get h slist.SList.Node.id in
+	  if tab == dummy_cell then raise Not_found
+	  else
+	  let res = get tab tag in
+	  if res == dummy then raise Not_found else res
+
+	let add (h : t) tag slist (data : fun_tree) =
+	  let tab = get h slist.SList.Node.id in
+	  let tab = if tab == dummy_cell then
+	    let x = Array.create 10000 dummy in
+	    (set h slist.SList.Node.id  x;x)
+	  else tab
+	  in
+	  set tab tag data	  
+      end
+
+      let td_trans = TransCache.create 10000 (* should be number of tags *number of states^2
+						in the document *)
+
       let empty_size n =
 	let rec loop acc = function 0 -> acc
 	  | n -> loop (SList.cons StateSet.empty acc) (n-1)
 	in loop SList.nil n
 	     
-      let top_down ?(noright=false) a t slist ctx slot_size =	
-	let pempty = empty_size slot_size in	
-	let eval_fold2_slist fll sl1 sl2 res1 res2 t =
-	  let res = Array.copy res1 in
-	  let rec fold l1 l2 fll i aq = 
-	    match SList.node l1,SList.node l2, fll with
-	      | SList.Cons(s1,ll1), 
-		SList.Cons(s2,ll2),
-		fl::fll -> 
-		let r',rb,rb1,rb2,mark = eval_formlist s1 s2 fl in
- 		let _ = res.(i) <- merge rb rb1 rb2 mark t res1.(i) res2.(i) 
-		in		  
-		  fold ll1 ll2 fll (i+1) (SList.cons r' aq)
-	    | SList.Nil, SList.Nil,[] -> aq,res
-	    | _ -> assert false
+      module FllTable = Hashtbl.Make (struct type t = Formlistlist.t
+					     let equal = (==)
+					     let hash t = t.Formlistlist.Node.id
+				      end)
+	
+      module Fold2ResOld =
+      struct
+	type 'a t = 'a SListTable.t SListTable.t FllTable.t
+	let create n = Array.init 10000 (fun _ -> FllTable.create n)
+
+	let find h tag fl s1 s2 =
+	  let hf = h.(tag) in
+	  let hs1 = FllTable.find hf fl in
+	  let hs2 = SListTable.find hs1 s1 in
+	  SListTable.find hs2 s2
+	  
+	let add h tag fl s1 s2 data = 
+	  let hf = h.(tag) in
+	  let hs1 =
+	    try FllTable.find hf fl with
+	      | Not_found -> 
+		  let hs1 = SListTable.create SMALL_H_SIZE
+		  in FllTable.add hf fl hs1;hs1
 	  in
-	    fold sl1 sl2 fll 0 SList.nil
-	in
-	let null_result() = (pempty,Array.make slot_size RS.empty) in
-	let rec loop t slist ctx = 
-	  if Tree.is_nil t then null_result()
-	  else	    
-	    let tag = Tree.tag t in
-	    let fl_list,llist,rlist,first,next = get_trans slist tag a t in
-	    let sl1,res1 = loop (first t) llist t in
-	    let sl2,res2 = loop (next t ctx) rlist ctx in
-	    let res = eval_fold2_slist fl_list sl1 sl2 res1 res2 t	    
-	    in
-	      D_IGNORE_(
-		register_trace t (slist,(fst res),sl1,sl2,fl_list,first,next,ctx),
-		res)
-	in
-	let loop_no_right t slist ctx =
-	  if Tree.is_nil t then null_result()
-	  else	    
-	    let tag = Tree.tag t in
-	    let fl_list,llist,_,first,next = get_trans slist tag a t in
-	    let sl1,res1 = loop (first t) llist t in
-	    let sl2,res2 = null_result() in
-	    let res = eval_fold2_slist fl_list sl1 sl2 res1 res2 t
-	    in  
-	      D_IGNORE_(
-		register_trace t (slist,(fst res),sl1,sl2,fl_list,first,next,ctx),
-		res)
+	  let hs2 =
+	    try SListTable.find hs1 s1
+	    with
+	      | Not_found ->
+		  let hs2 = SListTable.create SMALL_H_SIZE
+		  in SListTable.add hs1 s1 hs2;hs2
+	  in
+	  SListTable.add hs2 s2 data
+      end
+
+      module Fold2Res = struct
+	external get : 'a array -> int ->'a = "%array_unsafe_get"
+	external set : 'a array -> int -> 'a -> unit = "%array_unsafe_set"
+	external field1 : 'a -> 'b = "%field1"
+	type 'a t = 'a array array array array
+	let dummy = [||]
+	let dummy_val : 'a =
+	  let v = Obj.repr ((),2,()) in
+	  Obj.magic v
+
+	let create n = Array.create n dummy
+
+	let find h tag fl s1 s2 = 
+	  let af = get h tag in
+	  if af == dummy then raise Not_found
+	  else 
+	  let as1 = get af fl.Formlistlist.Node.id in
+	  if as1 == dummy then raise Not_found
+	  else 
+	  let as2 = get as1 s1.SList.Node.id in
+	  if as2 == dummy then raise Not_found 
+	  else let v = get as2 s2.SList.Node.id in
+	  if field1 v == 2 then raise Not_found 
+	  else v
+	
+	let add h tag fl s1 s2 data = 
+	  let af =
+	    let x = get h tag in
+	    if x == dummy then 
+	    begin
+	      let y = Array.make 10000 dummy in
+	      set h tag y;y
+	    end
+	    else x
+	  in
+	  let as1 = 
+	    let x = get af fl.Formlistlist.Node.id in 
+	    if x == dummy then
+	    begin
+	      let y = Array.make 10000 dummy in
+	      set af fl.Formlistlist.Node.id y;y
+	    end
+	    else x
+	  in
+	  let as2 = 
+	    let x = get as1 s1.SList.Node.id in 
+	    if x == dummy then 
+	    begin
+	      let y = Array.make 10000 dummy_val in
+	      set as1 s1.SList.Node.id y;y
+	    end
+	    else x
+	  in
+	  set as2 s2.SList.Node.id data    
+      end
+
+
+      let h_fold2 = Fold2Res.create 10000
+      
+      let top_down ?(noright=false) a tree t slist ctx slot_size =	
+	let pempty = empty_size slot_size in	
+	let rempty = Array.make slot_size RS.empty in
+	(* evaluation starts from the right so we put sl1,res1 at the end *)
+	let eval_fold2_slist fll t tag (sl2,res2) (sl1,res1) =
+	  let res = Array.copy rempty in
+	  try
+	    let r,b,btab = Fold2Res.find h_fold2 tag fll sl1 sl2  in
+	    if b then for i=0 to slot_size - 1 do
+	      res.(i) <- RS.merge btab.(i) t res1.(i) res2.(i);
+	    done;
+	    r,res
+	  with
+	     Not_found ->
+	       let btab = Array.make slot_size NO in	    
+	       let rec fold l1 l2 fll i aq ab = 
+		 match fll.Formlistlist.Node.node,
+		   l1.SList.Node.node,
+		   l2.SList.Node.node
+		 with	     
+		   | Formlistlist.Cons(fl,fll),
+		    SList.Cons(s1,ll1),
+		    SList.Cons(s2,ll2) ->
+		       let r',conf = eval_formlist tag s1 s2 fl in
+ 		       let _ = btab.(i) <- conf
+		       in
+		       fold ll1 ll2 fll (i+1) (SList.cons r' aq) ((conf!=NO)||ab)
+		   | _ -> aq,ab
+	       in
+	       let r,b = fold sl1 sl2 fll 0 SList.nil false in
+	       Fold2Res.add h_fold2 tag fll sl1 sl2 (r,b,btab);
+	       if b then for i=0 to slot_size - 1 do
+		 res.(i) <- RS.merge btab.(i) t res1.(i) res2.(i);
+	       done;
+	       r,res
 	in
+
+	let null_result = (pempty,Array.copy rempty) in
+	let rec loop t slist ctx =
+	  if t == Tree.nil then null_result else get_trans t slist (Tree.tag tree t) ctx
+	and loop_tag tag t slist ctx =
+	  if t == Tree.nil then null_result else get_trans t slist tag ctx
+	and loop_no_right t slist ctx = 
+	  if t == Tree.nil then null_result else get_trans ~noright:true t slist (Tree.tag tree t) ctx
+	and get_trans ?(noright=false) t slist tag ctx = 
+	  let cont = 
+	    try
+	      TransCache.find td_trans tag slist
+	    with	
+	      | Not_found ->
+		  let fl_list,llist,rlist,ca,da,sa,fa = 
+		    SList.fold 
+		      (fun set (fll_acc,lllacc,rllacc,ca,da,sa,fa) -> (* For each set *)
+			 let fl,ll,rr,ca,da,sa,fa = 
+			   StateSet.fold
+	 		     (fun q acc ->			    
+	 			List.fold_left 
+				  (fun ((fl_acc,ll_acc,rl_acc,c_acc,d_acc,s_acc,f_acc) as acc) 
+				     (ts,t)  ->
+				       if (TagSet.mem tag ts)
+				       then 
+					 let _,_,_,f,_ = Transition.node t in
+					 let (child,desc,below),(sibl,foll,after) = Formula.st f in
+					   (Formlist.cons t fl_acc,
+					    StateSet.union ll_acc below,
+					    StateSet.union rl_acc after,
+					    StateSet.union child c_acc,
+					    StateSet.union desc d_acc,
+					    StateSet.union sibl s_acc,
+					    StateSet.union foll f_acc)		 
+				       else acc ) acc (
+				    try Hashtbl.find a.trans q 
+				    with
+					Not_found -> Printf.eprintf "Looking for state %i, doesn't exist!!!\n%!"
+					  q;[]
+				  )
+				  
+			     ) set (Formlist.nil,StateSet.empty,StateSet.empty,ca,da,sa,fa)
+			 in (Formlistlist.cons fl fll_acc), (SList.cons ll lllacc), (SList.cons rr rllacc),ca,da,sa,fa)
+		      slist (Formlistlist.nil,SList.nil,SList.nil,StateSet.empty,StateSet.empty,StateSet.empty,StateSet.empty)
+		  in			
+		    (* Logic to chose the first and next function *)
+		  let tags_child,tags_below,tags_siblings,tags_after = Tree.tags tree tag in
+		  let d_f = Algebra.decide a tags_child tags_below (StateSet.union ca da) true in
+		  let d_n = Algebra.decide a tags_siblings tags_after (StateSet.union sa fa) false in
+		  let f_kind,first = choose_jump_down tree d_f
+		  and n_kind,next = if noright then (`NIL, fun _ _ -> Tree.nil )
+		  else choose_jump_next tree d_n in
+		  let empty_res = null_result in
+                  let cont =
+                    match f_kind,n_kind with
+                      | `NIL,`NIL ->
+			  Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__);
+			  (fun t _ -> eval_fold2_slist fl_list t (Tree.tag tree t) empty_res empty_res)
+		      |  _,`NIL -> (
+                           match f_kind with
+                             |`TAG(tag') ->				
+				let default = fun t _ -> eval_fold2_slist fl_list t (Tree.tag tree t) empty_res
+                                  (loop_tag tag' (first t) llist t )
+				in
+				let cf = SList.hd llist in
+				if (slot_size == 1) && StateSet.is_singleton cf
+				then
+				let s = StateSet.choose cf in
+				if (Algebra.is_rec a s fst) && (Algebra.is_rec a s snd)
+				&& (Algebra.is_final_marking a s)
+				then 
+				let _ = Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__) in
+				RS.mk_quick_tag_loop default llist 1 tree tag' 
+				else 
+				let _ = Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__) in
+				default
+				else
+				let _ = Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__) in
+				default
+			     | _ ->
+				 let _ = Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__) in	
+				 (fun t _ -> eval_fold2_slist fl_list t (Tree.tag tree t) empty_res
+				   (loop (first t) llist t ))
+			 )
+                      | `NIL,_ -> (
+                          match n_kind with
+                            |`TAG(tag') ->
+			       if SList.equal rlist slist && tag == tag' then
+			       let rec loop t ctx = 
+				 if t == Tree.nil then empty_res else 
+				 let res2 = loop (next t ctx) ctx in				   
+				 eval_fold2_slist fl_list t tag res2 empty_res		  
+			       in Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__);loop
+			       else
+			       let _ = Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__) in
+                               (fun t ctx -> eval_fold2_slist fl_list t (Tree.tag tree t)
+                                 (loop_tag tag' (next t ctx) rlist ctx ) empty_res)
+											     
+                            | _ ->
+				let _ = Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__) in
+                                (fun t ctx -> eval_fold2_slist fl_list t (Tree.tag tree t)
+                                   (loop (next t ctx) rlist ctx ) empty_res)
+			)
+			  
+                      | `TAG(tag1),`TAG(tag2) ->
+			  let _ = Printf.eprintf "Using %i %s %s\n" (Loc.start_line  __LOCATION__)
+			    (Tag.to_string tag1)
+			  (Tag.to_string tag2) 
+			  in
+                          (fun t ctx ->
+			     eval_fold2_slist fl_list t (Tree.tag tree t)
+                               (loop_tag tag2 (next t ctx) rlist ctx )
+                               (loop_tag tag1 (first t) llist t ))
+ 
+                      | `TAG(tag'),`ANY ->
+			  let _ = Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__) in
+			  (fun t ctx ->
+			    eval_fold2_slist fl_list t (Tree.tag tree t)
+                              (loop (next t ctx) rlist ctx )
+                              (loop_tag tag' (first t) llist t ))
+									   
+                      | `ANY,`TAG(tag') ->
+			  let _ = Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__) in
+                          (fun t ctx ->
+                            eval_fold2_slist fl_list t (Tree.tag tree t)
+                              (loop_tag tag' (next t ctx) rlist ctx )
+                              (loop (first t) llist t ))
+								   
+                      | `ANY,`ANY ->
+			  let _ = Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__) in
+			  if SList.equal slist rlist && SList.equal slist llist
+			  then
+			  let rec loop t ctx = 
+			    if t == Tree.nil then empty_res else
+			    let r1 = loop (first t) t
+			    and r2 = loop (next t ctx) ctx
+			    in
+			    eval_fold2_slist fl_list t (Tree.tag tree t) r2 r1
+			  in 
+			  let _ = Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__) in
+			  loop
+			  else
+			  let _ = Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__) in
+                          (fun t ctx ->
+                             eval_fold2_slist fl_list t (Tree.tag tree t)
+                               (loop (next t ctx) rlist ctx )
+                               (loop (first t) llist t ))
+		      | _,_ -> 
+			  let _ = Printf.eprintf "Using %i\n" (Loc.start_line  __LOCATION__) in
+			  (fun t ctx ->
+                             eval_fold2_slist fl_list t (Tree.tag tree t)
+                               (loop (next t ctx) rlist ctx )
+                               (loop (first t) llist t ))
+ 
+		  in
+		  let cont = D_IF_( (fun t ctx ->
+                                       let a,b = cont t ctx in
+                                       register_trace tree t (slist,a,fl_list,first,next,ctx);
+                                       (a,b)
+                                    ) ,cont)
+                  in
+                  (TransCache.add td_trans tag slist cont ;cont)
+	  in cont t ctx
+	       
+	in 
 	  (if noright then loop_no_right else loop) t slist ctx
-	    
 
-	let run_top_down a t =
+	let run_top_down a tree =
 	  let init = SList.cons a.init SList.nil in
-	  let _,res = top_down a t init t 1 
+	  let _,res = top_down a tree Tree.root init Tree.root 1 
 	  in 
 	    D_IGNORE_(
-	      output_trace a t "trace.html"
-		(RS.fold (fun t a -> IntSet.add (Tree.id t) a) res.(0) IntSet.empty),
+	      output_trace a tree "trace.html"
+		(RS.fold (fun t a -> IntSet.add (Tree.id tree t) a) res.(0) IntSet.empty),
 	      res.(0))
 	;;
 
@@ -721,22 +1219,24 @@ END
 			 StateSet.print fmt k;
 			 Format.fprintf fmt "-> %i\n" (RS.length d)) c.results;			 
 	    Format.fprintf fmt "\n%!"
-	    
+	      
 	  let merge c1 c2  =
- 	    let acc1 = IMap.fold (fun s r acc -> 
-				    IMap.add s
-				      (try 
-					 RS.concat r (IMap.find s acc)
-				       with
-					 | Not_found -> r) acc) c1.results IMap.empty 
+ 	    let acc1 =
+	      IMap.fold 
+		( fun s r acc ->
+		    IMap.add s
+		      (try 
+			 RS.concat r (IMap.find s acc)
+		       with
+			 | Not_found -> r) acc) c1.results IMap.empty 
 	    in
 	    let imap =
-	      IMap.fold (fun s r acc -> 
-			   IMap.add s
-			     (try 
-				RS.concat r (IMap.find s acc)
-			      with
-				| Not_found -> r) acc)  c2.results acc1
+		IMap.fold (fun s r acc -> 
+			     IMap.add s
+			       (try 
+				  RS.concat r (IMap.find s acc)
+				with
+				  | Not_found -> r) acc)  c2.results acc1
 	    in
 	    let h,s =
 	      Ptss.fold 
@@ -752,32 +1252,34 @@ END
 
 	let h_fold = Hashtbl.create 511 
 
-	let fold_f_conf  t slist fl_list conf dir= 
+	let fold_f_conf  tree t slist fl_list conf dir= 
+	  let tag = Tree.tag tree t in
 	  let rec loop sl fl acc =
 	    match SList.node sl,fl with
 	      |SList.Nil,[] -> acc
 	      |SList.Cons(s,sll), formlist::fll ->
-		 let r',rb,rb1,rb2,mark = 
+		 let r',mcnf = 
 		   let key = SList.hash sl,Formlist.hash formlist,dir in
-		     try 
-		       Hashtbl.find h_fold key
-		     with
-			 Not_found -> let res = 
-			   if dir then eval_formlist s Ptset.Int.empty formlist
-			   else eval_formlist  Ptset.Int.empty s formlist 
-			 in (Hashtbl.add h_fold key res;res)
+		   try 
+		     Hashtbl.find h_fold key
+		   with
+		      Not_found -> let res = 
+			if dir then eval_formlist tag s Ptset.Int.empty formlist
+			else eval_formlist tag Ptset.Int.empty s formlist 
+		      in (Hashtbl.add h_fold key res;res)
+		 in
+		 let (rb,rb1,rb2,mark) = bool_of_merge mcnf in
+		 if rb && ((dir&&rb1)|| ((not dir) && rb2))
+		 then 
+		 let acc = 
+		   let old_r = 
+		     try Configuration.IMap.find s conf.Configuration.results
+		     with Not_found -> RS.empty
 		   in
-		    if rb && ((dir&&rb1)|| ((not dir) && rb2))
-		    then 
-		      let acc = 
-			let old_r = 
-			  try Configuration.IMap.find s conf.Configuration.results
-			  with Not_found -> RS.empty
-			in
-			  Configuration.add acc r' (if mark then RS.cons t old_r else old_r)			
-		      in
-			loop sll fll acc
-		    else loop sll fll acc
+		   Configuration.add acc r' (if mark then RS.cons t old_r else old_r)			
+		 in
+		 loop sll fll acc
+		 else loop sll fll acc
 	      | _ -> assert false
 	  in
 	    loop slist fl_list Configuration.empty
@@ -803,39 +1305,38 @@ END
 	      in
 		(Hashtbl.add h_trans key res;res) 
 		  
+
 	      
 	let h_tdconf = Hashtbl.create 511 
-	let rec bottom_up a tree conf next jump_fun root dotd init accu = 
+	let rec bottom_up a tree t conf next jump_fun root dotd init accu = 
 	  if (not dotd) && (Configuration.is_empty conf ) then
-
-	    accu,conf,next 
+	  accu,conf,next 
 	  else
 
-	    let below_right = Tree.is_below_right tree next in 
-
-	    let accu,rightconf,next_of_next = 	    
-	      if below_right then (* jump to the next *)
-		bottom_up a next conf (jump_fun next) jump_fun (Tree.next_sibling tree) true init accu
-	      else accu,Configuration.empty,next
-	    in 
+	  let below_right = Tree.is_below_right tree t next in 
+	  
+	  let accu,rightconf,next_of_next = 	    
+	    if below_right then (* jump to the next *)
+	    bottom_up a tree next conf (jump_fun next) jump_fun (Tree.next_sibling tree t) true init accu
+	    else accu,Configuration.empty,next
+	  in 
 	  let sub =
 	    if dotd then
-	      if below_right then prepare_topdown a tree true
-	      else prepare_topdown a tree false
+	    if below_right then prepare_topdown a tree t true
+	    else prepare_topdown a tree t false
 	    else conf
 	  in
 	  let conf,next =
 	    (Configuration.merge rightconf sub, next_of_next)
 	  in
-	    if Tree.equal tree root then  accu,conf,next 
-	    else	      
-	  let parent = Tree.binary_parent tree in
-	  let ptag = Tree.tag parent in
-	  let dir = Tree.is_left tree in
+	  if t == root then  accu,conf,next else
+	  let parent = Tree.binary_parent tree t in
+	  let ptag = Tree.tag tree parent in
+	  let dir = Tree.is_left tree t in
 	  let slist = Configuration.Ptss.fold (fun e a -> SList.cons e a) conf.Configuration.sets SList.nil in
 	  let fl_list = get_up_trans slist ptag a parent in
 	  let slist = SList.rev (slist) in 
-	  let newconf = fold_f_conf parent slist fl_list conf dir in
+	  let newconf = fold_f_conf tree parent slist fl_list conf dir in
 	  let accu,newconf = Configuration.IMap.fold (fun s res (ar,nc) ->
 							if Ptset.Int.intersect s init then
 							  ( RS.concat res ar ,nc)
@@ -843,12 +1344,10 @@ END
 	    (newconf.Configuration.results) (accu,Configuration.empty) 
 	  in
 
-	    bottom_up a parent newconf next jump_fun root false init accu
-
-	and prepare_topdown a t noright =
-	  let tag = Tree.tag t in
-(*	  pr "Going top down on tree with tag %s = %s "  
-	    (if Tree.is_nil t then "###" else (Tag.to_string(Tree.tag t))) (Tree.dump_node t); *)
+	    bottom_up a tree parent newconf next jump_fun root false init accu
+	      
+	and prepare_topdown a tree t noright =
+	  let tag = Tree.tag tree t in
  	  let r = 
 	    try
 	      Hashtbl.find h_tdconf tag
@@ -865,48 +1364,43 @@ END
 	    pr "\n%!";
 	  in *)
 	  let r = SList.cons r SList.nil in
-	  let set,res = top_down (~noright:noright) a t r t 1 in
+	  let set,res = top_down (~noright:noright) a tree t r t 1 in
 	  let set = match SList.node set with
 	    | SList.Cons(x,_) ->x
 	    | _ -> assert false 
-	  in 
-(*	    pr "Result of topdown run is %!";
-	    StateSet.print fmt (Ptset.Int.elements set);
-	    pr ", number is %i\n%!" (RS.length res.(0));  *)
-	    Configuration.add Configuration.empty set res.(0) 
+	  in
+	  Configuration.add Configuration.empty set res.(0) 
 
 
 
-	let run_bottom_up a t k =
-	  let trlist = Hashtbl.find a.trans (Ptset.Int.choose a.init)
+	let run_bottom_up a tree k =
+	  let t = Tree.root in
+	  let trlist = Hashtbl.find a.trans (StateSet.choose a.init)
 	  in
 	  let init = List.fold_left 
 	    (fun acc (_,t) ->
-	       let _,_,f,_ = Transition.node t in 
+	       let _,_,_,f,_ = Transition.node t in 
 	       let _,_,l = fst ( Formula.st f ) in
-		 Ptset.Int.union acc l)
-	    Ptset.Int.empty trlist
+		 StateSet.union acc l)
+	    StateSet.empty trlist
 	  in
 	  let tree1,jump_fun =
 	    match k with
 	      | `TAG (tag) -> 
 		  (*Tree.tagged_lowest t tag, fun tree -> Tree.tagged_next tree tag*)
-		  (Tree.tagged_desc tag t, fun tree -> Tree.tagged_foll_ctx tag tree t)
-	      | `CONTAINS(_) -> (Tree.text_below t,fun tree -> Tree.text_next tree t)
+		  (Tree.tagged_desc tree tag t, let jump = Tree.tagged_foll_ctx tree tag
+		  in fun n -> jump n t )
+	      | `CONTAINS(_) -> (Tree.text_below tree t,let jump = Tree.text_next tree 
+				 in fun n -> jump n t)
 	      | _ -> assert false
 	  in
 	  let tree2 = jump_fun tree1 in
-	  let rec loop tree next acc = 
-(*	    let _ = pr "\n_________________________\nNew iteration\n" in 
-	    let _ = pr "Jumping to %s\n%!" (Tree.dump_node tree) in  *)
-	    let acc,conf,next_of_next = bottom_up a tree 
-	      Configuration.empty next jump_fun (Tree.root tree) true init acc
+	  let rec loop t next acc = 
+	    let acc,conf,next_of_next = bottom_up a tree t
+	      Configuration.empty next jump_fun (Tree.root) true init acc
 	    in 
-	      (*	    let _ = pr "End of first iteration, conf is:\n%!";
-			    Configuration.pr fmt conf 
-			    in *)	      
 	    let acc = Configuration.IMap.fold 
-	      ( fun s res acc -> if Ptset.Int.intersect init s
+	      ( fun s res acc -> if StateSet.intersect init s
 		then RS.concat res acc else acc) conf.Configuration.results acc
 	    in
 	      if Tree.is_nil next_of_next  (*|| Tree.equal next next_of_next *)then
@@ -923,3 +1417,9 @@ END
     let bottom_up_count a t k = let module RI = Run(Integer) in Integer.length (RI.run_bottom_up a t k)
 
 
+    module Test (Doc : sig val doc : Tree.t end) =
+      struct
+	module Results = GResult(Doc)
+	let top_down a t = let module R = Run(Results) in (R.run_top_down a t)
+      end
+