open Table
let compteur = ref 0
+let table_query_tree = Hashtbl.create 97
+let table_qtree = QTreeHash.create 97
let all_nodes tree = let root = Naive_tree.root tree in
eval_axis tree [root] (Descendant true)
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
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
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 =
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)
Format.pp_print_flush Format.std_formatter ();
end
-let table_query_tree = Hashtbl.create 97
-
+
+
+let rec compare_query_tree q1 q2 =
+ q1.id==q2.id|| match q1.desc,q2.desc with
+ | Binop(op1,qt1,qt2),Binop(op2,qt3,qt4)->op1==op2&& ((compare_query_tree qt1 qt3 && compare_query_tree qt2 qt4)
+ || (compare_query_tree qt1 qt4 && compare_query_tree qt2 qt3))
+ | Axis(a1,qt1),Axis(a2,qt2) -> compare_axis a1 a2 && compare_query_tree qt1 qt2
+ | Tag(t1,k1),Tag(t2,k2) ->t1==t2&& k1==k2
+ | Dom,Dom | Start,Start ->true
+ | _,_ ->false
+
+and compare_axis a1 a2 =
+ match a1,a2 with
+ Self ,Self | Attribute, Attribute | Child , Child | Parent , Parent
+ | FollowingSibling , FollowingSibling
+ | PrecedingSibling , PrecedingSibling
+ | Preceding , Preceding | Following , Following -> true
+ | Descendant b1, Descendant b2 -> b1==b2
+ | Ancestor b1, Ancestor b2 -> b1==b2
+ | _,_ -> false
+
+
let rec eval_query_tree tree start q =
let resultat =
begin
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
in
debug tree q resultat;
resultat
+
+let mini_id = ref 0
+let mini_table = QTreeHash.create 17
+
+let rec minimize_qtree q =
+ if q.id != -1 then q
+ else
+ try
+ QTreeHash.find mini_table q
+ with Not_found ->
+ let mdesc =
+ match q.desc with
+ (Start | Dom | Tag _) as d -> d
+ | Binop(op,q1,q2) -> let mq1 = minimize_qtree q1 in
+ let mq2 = minimize_qtree q2 in
+ Binop(op,mq1,mq2)
+ | Axis(a,q1) -> let mq1 = minimize_qtree q1 in
+ Axis(a,mq1)
+ in
+ q.desc <- mdesc;
+ q.hash <- QTree.hash q;
+ q.id <- !mini_id;
+ incr mini_id;
+ QTreeHash.add mini_table q q;
+ q
+
+
+
+let rec eval_qtree tree start q =
+ let resultat =
+ begin
+ try
+ QTreeHash.find table_qtree q
+ with Not_found ->
+ let res =
+ match q.desc with
+ | Start -> start
+ | Dom -> all_nodes tree
+ | Tag (t,k) -> element_by_tag tree t k
+ | Axis (a,q1) -> let ls = eval_qtree tree start q1 in
+ eval_axis tree ls a
+ | Binop (op,q1,q2)-> begin
+ let ls1 = eval_qtree tree start q1 in
+ let ls2 = eval_qtree tree start q2 in
+ match op with
+ | Union -> union_list tree ls1 ls2
+ | Inter -> inter_list tree ls1 ls2
+ | Diff -> diff_list tree ls1 ls2
+ end
+ in
+ let res = Tas.sort_of_list tree res in
+(* let res = List.sort (Table.compare_node tree) res in*)
+ QTreeHash.add table_qtree q res;
+ compteur := !compteur + (List.length res);
+ res
+ end
+ in
+ debug tree q resultat;
+ resultat
projects / tatoo.git / blobdiff