Coverage Report - com.sun.javafx.api.tree.JavaFXTreePathScanner
 
Classes in this File Line Coverage Branch Coverage Complexity
JavaFXTreePathScanner
91%
10/11
100%
2/2
0
 
 1  
 /*
 2  
  * Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
 3  
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  
  *
 5  
  * This code is free software; you can redistribute it and/or modify it
 6  
  * under the terms of the GNU General Public License version 2 only, as
 7  
  * published by the Free Software Foundation.  Sun designates this
 8  
  * particular file as subject to the "Classpath" exception as provided
 9  
  * by Sun in the LICENSE file that accompanied this code.
 10  
  *
 11  
  * This code is distributed in the hope that it will be useful, but WITHOUT
 12  
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 13  
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 14  
  * version 2 for more details (a copy is included in the LICENSE file that
 15  
  * accompanied this code).
 16  
  *
 17  
  * You should have received a copy of the GNU General Public License version
 18  
  * 2 along with this work; if not, write to the Free Software Foundation,
 19  
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 20  
  *
 21  
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 22  
  * CA 95054 USA or visit www.sun.com if you need additional information or
 23  
  * have any questions.
 24  
  */
 25  
 
 26  
 package com.sun.javafx.api.tree;
 27  
 
 28  
 import com.sun.source.tree.*;
 29  
 import com.sun.source.util.TreePath;
 30  
 
 31  
 /**
 32  
  * A TreeVisitor that visits all the child tree nodes, and provides
 33  
  * support for maintaining a path for the parent nodes.
 34  
  * To visit nodes of a particular type, just override the
 35  
  * corresponding visitorXYZ method.
 36  
  * Inside your method, call super.visitXYZ to visit descendant
 37  
  * nodes.
 38  
  *
 39  
  * @author Jonathan Gibbons
 40  
  * @since 1.6
 41  
  */
 42  3
 public class JavaFXTreePathScanner<R, P> extends JavaFXTreeScanner<R, P> {
 43  
 
 44  
     /**
 45  
      * Scan a tree from a position identified by a TreePath.
 46  
      */
 47  
     public R scan(TreePath path, P p) {
 48  2
         this.path = path;
 49  
         try {
 50  2
             return path.getLeaf().accept(this, p);
 51  
         } finally {
 52  0
             this.path = null;
 53  
         }
 54  
     }
 55  
 
 56  
     /**
 57  
      * Scan a single node.
 58  
      * The current path is updated for the duration of the scan.
 59  
      */
 60  
     @Override
 61  
     public R scan(Tree tree, P p) {
 62  70
         if (tree == null)
 63  14
             return null;
 64  
 
 65  56
         TreePath prev = path;
 66  56
         path = new TreePath(path, tree);
 67  
         try {
 68  56
             return tree.accept(this, p);
 69  
         } finally {
 70  55
             path = prev;
 71  
         }
 72  
     }
 73  
 
 74  
     /**
 75  
      * Get the current path for the node, as built up by the currently
 76  
      * active set of scan calls.
 77  
      */
 78  
     public TreePath getCurrentPath() {
 79  4
         return path;
 80  
     }
 81  
 
 82  
     private TreePath path;
 83  
 }