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    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  }