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Wed Mar 24 16:00:00 GMT 2004
NodeVisitor
package examples.visitor.java; /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- * * This file is part of the design patterns project at UBC * * The contents of this file are subject to the Mozilla Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * either http:*www.mozilla.org/MPL/ or http:*aspectj.org/MPL/. * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is ca.ubc.cs.spl.pattern. * * Contributor(s): */ /** * Defines the interface for visitors that operate on binary trees consisting * of Leafs and RegularNodes. * * @author Jan Hannemann * @author Gregor Kiczales * @version 1.0, 06/13/02 * * @see Node * @see Leaf * @see RegularNode */ public interface NodeVisitor { /** * Visits a RegularNode, which is a non-terminal binary tree node. * * @param node the regular node */ public void visitRegularNode(Node node); /** * Visits a Leaf, which is a terminal tree node. * * @param node the leaf */ public void visitLeaf(Node node); /** * Returns the result of the visitor's operation * * @returns a string describing the result of this visitor's operation. */ public String report(); }
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