X-Git-Url: http://git.nguyen.vg/gitweb/?p=tatoo.git;a=blobdiff_plain;f=src%2Fquery_tree.ml;fp=src%2Fquery_tree.ml;h=5999df69a637d928907b5b8741da656cba4494a9;hp=02ed498c67df3e9f70cff8a67b97399d41c6778b;hb=333d2789a5dd6b7395b5fedbcdd670e103e0eb4b;hpb=273665d1294e6253fbd45137471e7dd568b38735

diff --git a/src/query_tree.ml b/src/query_tree.ml
index 02ed498..5999df6 100644
--- a/src/query_tree.ml
+++ b/src/query_tree.ml
@@ -10,6 +10,8 @@ let element_by_tag tree tagset kind = let dom = all_nodes tree in
 				Tree.NodeKind.is_a (Naive_tree.kind tree c) kind &&
 				QNameSet.mem (Naive_tree.tag tree c) tagset ) dom
 
+let mk_node q = {desc = q; id = -1; hash = -1}
+
 let rec compile_single_path p =
   let open Xpath.Ast in
       match p with
@@ -17,24 +19,24 @@ let rec compile_single_path p =
       
 and compile_step_list p = 
     match p with
-      | [] -> Start
+      | [] -> mk_node Start
       | (a,(test,kind),el) :: r ->
 	let qtree = compile_step_list r in
-	let res = Binop ( Inter,Axis (a,qtree), Tag (test,kind) ) in
+	let res = mk_node ( Binop ( Inter,mk_node( Axis (a,qtree)),mk_node (Tag (test,kind) )) ) in
 	List.fold_left (fun acc e ->
-	  Binop(Inter, acc, compile_expr e)) res el  
+	  mk_node (Binop(Inter, acc, compile_expr e))) res el  
 
   and compile_expr  (e : Xpath.Ast.expr )  = match e with
     | Fun_call (f, [ e0 ]) when (QName.to_string f) = "not" ->
       let qtree = compile_expr e0 in
-      Binop (Diff , Dom, qtree)
+      mk_node (Binop (Diff , mk_node (Dom), qtree))
 
     | Binop (e1,op,e2) -> let qtree1 = compile_expr e1 in
 			  let qtree2 = compile_expr e2 in 
 			  begin
 			    match op with 
-			      | Or -> Binop (Union , qtree1,qtree2)
-			      | And -> Binop (Inter ,qtree1,qtree2)
+			      | Or -> mk_node (Binop (Union , qtree1,qtree2))
+			      | And -> mk_node (Binop (Inter ,qtree1,qtree2))
 			      | _ -> failwith "Unknown operator"
 			  end
     | Path p -> compile_path_rev p
@@ -44,21 +46,21 @@ and compile_step_list p =
     match p with
       | [] -> assert false
       | [p] -> compile_single_path_rev p  
-      | p::r -> List.fold_left (fun acc p -> Binop (Union , acc, compile_single_path_rev p) ) (compile_single_path_rev p) r
+      | p::r -> List.fold_left (fun acc p -> mk_node (Binop (Union , acc, compile_single_path_rev p)) ) (compile_single_path_rev p) r
 	
   and compile_single_path_rev p = 
     match p with
-      | Absolute p | Relative p -> compile_step_list_rev p (*(List.rev p)*)
+      | Absolute p | Relative p -> compile_step_list_rev p 
 
   and compile_step_list_rev p = match p with
-    | [] -> Dom        
+    | [] -> mk_node Dom        
     | (a,(test,kind),el) :: r -> 
       let qtree = compile_step_list_rev r in
-      let res = Binop (Inter , qtree, Tag(test,kind)) in
+      let res = mk_node (Binop (Inter , qtree,mk_node (Tag(test,kind)))) in
       let qtree2 = List.fold_left (fun acc e ->
-	Binop(Inter, acc, compile_expr e)) res el in
+	mk_node (Binop(Inter, acc, compile_expr e))) res el in
       let a_rev = axis_rev a in
-      Axis (a_rev , qtree2)
+      mk_node (Axis (a_rev , qtree2))
 						
       
     and axis_rev a =
@@ -83,7 +85,7 @@ and compile_step_list p =
 let compile_xpath p = match p with
   | [] -> assert false
   | [p] -> compile_single_path p
-  | p::r -> List.fold_left (fun acc p -> Binop (Union , acc, compile_single_path p) ) (compile_single_path p) r
+  | p::r -> List.fold_left (fun acc p -> mk_node (Binop (Union , acc, compile_single_path p) )) (compile_single_path p) r
 
 let comp_node t n1 n2 = (Naive_tree.preorder t n1) < (Naive_tree.preorder t n2)
 
@@ -139,7 +141,7 @@ let rec eval_query_tree tree start q =
 	Hashtbl.find table_query_tree q
       with Not_found ->	
 	let res =
-	match q with
+	match q.desc with
 	  | Start -> start
 	  | Dom ->  all_nodes tree 	    
 	  | Tag (t,k) -> element_by_tag tree t k