| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2002-2003 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, Lotus |
| * Development Corporation., http://www.lotus.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.xalan.templates; |
| |
| import org.apache.xpath.XPathVisitor; |
| |
| /** |
| * A derivation from this class can be passed to a class that implements |
| * the XSLTVisitable interface, to have the appropriate method called |
| * for each component of an XSLT stylesheet. Aside from possible other uses, the |
| * main intention is to provide a reasonable means to perform expression |
| * rewriting. |
| */ |
| public class XSLTVisitor extends XPathVisitor |
| { |
| /** |
| * Visit an XSLT instruction. Any element that isn't called by one |
| * of the other visit methods, will be called by this method. |
| * |
| * @param elem The xsl instruction element object. |
| * @return true if the sub expressions should be traversed. |
| */ |
| boolean visitInstruction(ElemTemplateElement elem) |
| { |
| return true; |
| } |
| |
| /** |
| * Visit an XSLT stylesheet instruction. |
| * |
| * @param elem The xsl instruction element object. |
| * @return true if the sub expressions should be traversed. |
| */ |
| boolean visitStylesheet(ElemTemplateElement elem) |
| { |
| return true; |
| } |
| |
| |
| /** |
| * Visit an XSLT top-level instruction. |
| * |
| * @param elem The xsl instruction element object. |
| * @return true if the sub expressions should be traversed. |
| */ |
| boolean visitTopLevelInstruction(ElemTemplateElement elem) |
| { |
| return true; |
| } |
| |
| /** |
| * Visit an XSLT top-level instruction. |
| * |
| * @param elem The xsl instruction element object. |
| * @return true if the sub expressions should be traversed. |
| */ |
| boolean visitTopLevelVariableOrParamDecl(ElemTemplateElement elem) |
| { |
| return true; |
| } |
| |
| |
| /** |
| * Visit an XSLT variable or parameter declaration. |
| * |
| * @param elem The xsl instruction element object. |
| * @return true if the sub expressions should be traversed. |
| */ |
| boolean visitVariableOrParamDecl(ElemVariable elem) |
| { |
| return true; |
| } |
| |
| /** |
| * Visit a LiteralResultElement. |
| * |
| * @param elem The literal result object. |
| * @return true if the sub expressions should be traversed. |
| */ |
| boolean visitLiteralResultElement(ElemLiteralResult elem) |
| { |
| return true; |
| } |
| |
| /** |
| * Visit an Attribute Value Template (at the top level). |
| * |
| * @param owner The owner of the expression, to which the expression can |
| * be reset if rewriting takes place. |
| * @param elem The attribute value template object. |
| * @return true if the sub expressions should be traversed. |
| */ |
| boolean visitAVT(AVT elem) |
| { |
| return true; |
| } |
| |
| |
| /** |
| * Visit an extension element. |
| * @param elem The extension object. |
| * @return true if the sub expressions should be traversed. |
| */ |
| boolean visitExtensionElement(ElemExtensionCall elem) |
| { |
| return true; |
| } |
| |
| } |
| |