1 /*** 2 * 3 * Copyright 2005 Jeremy Rayner 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 **/ 18 package org.codehaus.groovy.antlr.treewalker; 19 20 import org.codehaus.groovy.antlr.GroovySourceAST; 21 22 /*** 23 * A simple preorder traversal over the supplied antlr AST. 24 * 25 * @author <a href="mailto:groovy@ross-rayner.com">Jeremy Rayner</a> 26 * @version $Revision: 1.4 $ 27 */ 28 public class PreOrderTraversal extends TraversalHelper { 29 30 /*** 31 * A simple preorder traversal over the supplied antlr AST. 32 * @param visitor the Visitor to call for each node visited 33 */ 34 public PreOrderTraversal(Visitor visitor) { 35 super(visitor); 36 } 37 38 public void accept(GroovySourceAST currentNode) { 39 push(currentNode); 40 openingVisit(currentNode); 41 acceptChildren(currentNode); 42 closingVisit(currentNode); 43 pop(); 44 } 45 }