-external tree_prev_text : tree -> [`Tree] node -> [`Text ] node = "caml_xml_tree_prev_text"
-
-external tree_my_text : tree -> [`Tree] node -> [`Text ] node = "caml_xml_tree_my_text"
-external tree_next_text : tree -> [`Tree] node -> [`Text ] node = "caml_xml_tree_next_text"
-external tree_doc_ids : tree -> [`Tree ] node -> [`Text ] node * [`Text ] node = "caml_xml_tree_doc_ids"
-
-let text_size tree = int_of_node (snd ( tree_doc_ids tree (Obj.magic 0) ))
-
-external tree_text_xml_id : tree -> [`Text ] node -> int = "caml_xml_tree_text_xml_id"
-external tree_node_xml_id : tree -> [`Tree ] node -> int = "caml_xml_tree_node_xml_id"
-external tree_is_ancestor : tree -> [`Tree ] node -> [`Tree ] node -> bool = "caml_xml_tree_is_ancestor"
-external tree_tagged_desc : tree -> [`Tree ] node -> Tag.t -> [`Tree ] node = "caml_xml_tree_tagged_desc"
-external tree_tagged_foll_below : tree -> [`Tree ] node -> Tag.t -> [`Tree ] node -> [`Tree ] node = "caml_xml_tree_tagged_foll_below"
-external tree_subtree_tags : tree -> [`Tree ] node -> Tag.t -> int = "caml_xml_tree_subtree_tags"
-external tree_select_below : tree -> [`Tree ] node -> Ptset.int_vector -> Ptset.int_vector -> [`Tree ] node = "caml_xml_tree_select_below"
-external tree_select_desc_only : tree -> [`Tree ] node -> Ptset.int_vector -> [`Tree ] node = "caml_xml_tree_select_desc_only"
-external tree_select_next : tree -> [`Tree ] node -> Ptset.int_vector -> Ptset.int_vector -> [`Tree ] node -> [`Tree ] node = "caml_xml_tree_select_next"
-external tree_select_foll_only : tree -> [`Tree ] node -> Ptset.int_vector -> [`Tree ] node -> [`Tree ] node = "caml_xml_tree_select_foll_only"
-external tree_select_desc_or_foll_only : tree -> [`Tree ] node -> Ptset.int_vector -> [`Tree ] node -> [`Tree ] node = "caml_xml_tree_select_foll_only"
-
-type descr =
- | Nil
- | Node of [`Tree] node
- | Text of [`Text] node * [`Tree] node
-
-type t = { doc : tree;
- node : descr;
- ttable : (Tag.t,(Ptset.t*Ptset.t)) Hashtbl.t;
- }
+external tree_root : tree -> [`Tree] node = "caml_xml_tree_root" "noalloc"
+external tree_size : tree -> int = "caml_xml_tree_size" "noalloc"
+external tree_subtree_size : tree -> [`Tree] node -> int = "caml_xml_tree_subtree_size" "noalloc"
+external tree_subtree_elements : tree -> [`Tree] node -> int = "caml_xml_tree_subtree_elements" "noalloc"
+external tree_subtree_tags : tree -> [`Tree] node -> Tag.t -> int = "caml_xml_tree_subtree_elements" "noalloc"
+
+let tree_is_nil x = equal_node x nil
+external tree_is_leaf : tree -> [`Tree ] node -> bool = "caml_xml_tree_is_leaf" "noalloc"
+external tree_is_ancestor : tree -> [`Tree ] node -> [`Tree ] node -> bool = "caml_xml_tree_is_ancestor" "noalloc"
+external tree_is_child : tree -> [`Tree ] node -> [`Tree ] node -> bool = "caml_xml_tree_is_child" "noalloc"
+external tree_is_first_child : tree -> [`Tree ] node -> bool = "caml_xml_tree_is_first_child" "noalloc"
+external tree_num_children : tree -> [`Tree ] node -> int = "caml_xml_tree_num_children" "noalloc"
+external tree_child_number : tree -> [`Tree ] node -> int = "caml_xml_tree_child_number" "noalloc"
+external tree_depth : tree -> [`Tree ] node -> int = "caml_xml_tree_depth" "noalloc"
+external tree_preorder : tree -> [`Tree ] node -> int = "caml_xml_tree_preorder" "noalloc"
+external tree_postorder : tree -> [`Tree ] node -> int = "caml_xml_tree_postorder" "noalloc"
+external tree_tag : tree -> [`Tree ] node -> Tag.t = "caml_xml_tree_tag" "noalloc"
+external tree_doc_ids : tree -> [`Tree ] node -> [`Text] node*[`Text] node = "caml_xml_tree_doc_ids"
+
+external tree_parent : tree -> [`Tree] node -> [`Tree] node = "caml_xml_tree_parent" "noalloc"
+external tree_child : tree -> [`Tree] node -> int -> [`Tree] node = "caml_xml_tree_child" "noalloc"
+external tree_first_child : tree -> [`Tree] node -> [`Tree] node = "caml_xml_tree_first_child" "noalloc"
+external tree_first_element : tree -> [`Tree] node -> [`Tree] node = "caml_xml_tree_first_element" "noalloc"
+external tree_last_child : tree -> [`Tree] node -> [`Tree] node = "caml_xml_tree_last_child" "noalloc"
+external tree_next_sibling : tree -> [`Tree] node -> [`Tree] node = "caml_xml_tree_next_sibling" "noalloc"
+external tree_next_element : tree -> [`Tree] node -> [`Tree] node = "caml_xml_tree_next_element" "noalloc"
+external tree_prev_sibling : tree -> [`Tree] node -> [`Tree] node = "caml_xml_tree_prev_sibling" "noalloc"
+external tree_tagged_child : tree -> [`Tree] node -> Tag.t -> [`Tree] node = "caml_xml_tree_tagged_child" "noalloc"
+
+type unordered_set
+external unordered_set_alloc : int -> unordered_set = "caml_unordered_set_alloc"
+external unordered_set_length : unordered_set -> int = "caml_unordered_set_length"
+external unordered_set_insert : unordered_set -> int -> unit = "caml_unordered_set_set" "noalloc"
+
+external tree_select_child : tree -> [`Tree ] node -> unordered_set -> [`Tree] node = "caml_xml_tree_select_child" "noalloc"
+external tree_tagged_following_sibling : tree -> [`Tree] node -> Tag.t -> [`Tree] node = "caml_xml_tree_tagged_following_sibling" "noalloc"
+external tree_select_following_sibling : tree -> [`Tree ] node -> unordered_set -> [`Tree] node = "caml_xml_tree_select_following_sibling" "noalloc"
+external tree_tagged_descendant : tree -> [`Tree ] node -> Tag.t -> [`Tree ] node = "caml_xml_tree_tagged_descendant" "noalloc"
+external tree_select_descendant : tree -> [`Tree ] node -> unordered_set -> [`Tree] node = "caml_xml_tree_select_descendant" "noalloc"
+external tree_tagged_following : tree -> [`Tree ] node -> Tag.t -> [`Tree ] node = "caml_xml_tree_tagged_following" "noalloc"
+external tree_tagged_following_below : tree -> [`Tree ] node -> Tag.t -> [`Tree ] node -> [`Tree ] node = "caml_xml_tree_tagged_following_below" "noalloc"
+external tree_select_following_below : tree -> [`Tree ] node -> unordered_set -> [`Tree] node -> [`Tree] node = "caml_xml_tree_select_following_below" "noalloc"
+
+
+external tree_tagged_following_before : tree -> [`Tree ] node -> Tag.t -> [`Tree ] node -> [`Tree ] node = "caml_xml_tree_tagged_following_before" "noalloc"
+external tree_select_following_below : tree -> [`Tree ] node -> unordered_set -> [`Tree] node -> [`Tree] node = "caml_xml_tree_select_following_before" "noalloc"
+
+external tree_my_text : tree -> [`Tree ] node -> [`Text] node = "caml_xml_tree_my_text" "noalloc"
+external tree_my_text_unsafe : tree -> [`Tree ] node -> [`Text] node = "caml_xml_tree_my_text_unsafe" "noalloc"
+external tree_text_xml_id : tree -> [`Text ] node -> int = "caml_xml_tree_text_xml_id" "noalloc"
+external tree_node_xml_id : tree -> [`Tree ] node -> int = "caml_xml_tree_node_xml_id" "noalloc"
+
+external tree_parent_node : tree -> [`Text ] node -> [`Tree ] node = "caml_xml_tree_parent_node" "noalloc"
+
+(*external tree_prev_doc : tree -> [`Text ] node -> [`Tree ] node = "caml_xml_tree_prev_doc" "noalloc" *)
+
+external tree_closing : tree -> [`Tree] node -> [`Tree] node = "caml_xml_tree_closing" "noalloc"
+external tree_is_open : tree -> [`Tree] node -> bool = "caml_xml_tree_is_open" "noalloc"
+
+
+external benchmark_jump : tree -> Tag.t -> unit = "caml_benchmark_jump" "noalloc"
+
+let benchmark_jump t s = benchmark_jump t.doc s
+
+external benchmark_fsns : tree -> unit = "caml_benchmark_fsns" "noalloc"
+
+let benchmark_fsns t = benchmark_fsns t.doc
+
+
+
+
+
+
+
+let text_size tree = inode (snd ( tree_doc_ids tree root ))
+
+let text_get_text t (x:[`Text] node) =
+ if x == nulldoc then ""
+ else text_get_text t x