Improvements in the XQuery parse tree handler API.

lib/ace/mode/xquery/JSONParseTreeHandler.js

@@ -65,7 +65,7 @@ define(function(require, exports, module){
       }
     }
     
-    function popNode(name, end){
+    function popNode(){
      
       if(ptr.children.length > 0) {
         var s = ptr.children[0];
@@ -111,7 +111,14 @@ define(function(require, exports, module){
         }
       }
     }
- 
+    
+    this.closeParseTree = function() {
+      while(ptr.getParent !== null) {
+        popNode();
+      }
+      popNode();
+    };
+
     this.peek = function() {
       return ptr;    
     };
@@ -127,21 +134,21 @@ define(function(require, exports, module){
     };
 
     this.endNonterminal = function(name, end) {
-      popNode(name, end);
+      popNode();
     };
 
     this.terminal = function(name, begin, end) {
       name = (name.substring(0, 1) === "'" && name.substring(name.length - 1) === "'") ? "TOKEN" : name;
       pushNode(name, begin); 
       setValue(ptr, begin, end);
-      popNode(name, end);
+      popNode();
     };
 
     this.whitespace = function(begin, end) {
       var name = "WS";
       pushNode(name, begin);
       setValue(ptr, begin, end);
-      popNode(name, end);
+      popNode();
     };
 
     function setValue(node, begin, end) {