14c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson/* 24c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Licensed to the Apache Software Foundation (ASF) under one 34c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * or more contributor license agreements. See the NOTICE file 44c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * distributed with this work for additional information 54c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * regarding copyright ownership. The ASF licenses this file 64c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * to you under the Apache License, Version 2.0 (the "License"); 74c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * you may not use this file except in compliance with the License. 84c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * You may obtain a copy of the License at 94c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 104c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * http://www.apache.org/licenses/LICENSE-2.0 114c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 124c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Unless required by applicable law or agreed to in writing, software 134c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * distributed under the License is distributed on an "AS IS" BASIS, 144c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 154c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * See the License for the specific language governing permissions and 164c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * limitations under the License. 174c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 184c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson/* 194c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * $Id: XSLTVisitor.java 468643 2006-10-28 06:56:03Z minchau $ 204c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 214c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilsonpackage org.apache.xalan.templates; 224c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 234c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilsonimport org.apache.xpath.XPathVisitor; 244c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 254c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson/** 264c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * A derivation from this class can be passed to a class that implements 274c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * the XSLTVisitable interface, to have the appropriate method called 284c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * for each component of an XSLT stylesheet. Aside from possible other uses, 294c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * the main intention is to provide a reasonable means to perform expression 304c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * rewriting. 314c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 324c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilsonpublic class XSLTVisitor extends XPathVisitor 334c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson{ 344c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 354c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Visit an XSLT instruction. Any element that isn't called by one 364c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * of the other visit methods, will be called by this method. 374c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 384c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @param elem The xsl instruction element object. 394c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @return true if the sub expressions should be traversed. 404c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 414c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public boolean visitInstruction(ElemTemplateElement elem) 424c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 434c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson return true; 444c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 454c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 464c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 474c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Visit an XSLT stylesheet instruction. 484c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 494c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @param elem The xsl instruction element object. 504c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @return true if the sub expressions should be traversed. 514c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 524c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public boolean visitStylesheet(ElemTemplateElement elem) 534c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 544c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson return true; 554c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 564c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 574c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 584c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 594c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Visit an XSLT top-level instruction. 604c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 614c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @param elem The xsl instruction element object. 624c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @return true if the sub expressions should be traversed. 634c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 644c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public boolean visitTopLevelInstruction(ElemTemplateElement elem) 654c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 664c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson return true; 674c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 684c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 694c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 704c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Visit an XSLT top-level instruction. 714c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 724c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @param elem The xsl instruction element object. 734c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @return true if the sub expressions should be traversed. 744c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 754c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public boolean visitTopLevelVariableOrParamDecl(ElemTemplateElement elem) 764c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 774c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson return true; 784c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 794c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 804c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 814c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 824c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Visit an XSLT variable or parameter declaration. 834c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 844c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @param elem The xsl instruction element object. 854c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @return true if the sub expressions should be traversed. 864c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 874c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public boolean visitVariableOrParamDecl(ElemVariable elem) 884c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 894c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson return true; 904c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 914c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 924c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 934c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Visit a LiteralResultElement. 944c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 954c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @param elem The literal result object. 964c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @return true if the sub expressions should be traversed. 974c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 984c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public boolean visitLiteralResultElement(ElemLiteralResult elem) 994c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 1004c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson return true; 1014c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 1024c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 1034c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 1044c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Visit an Attribute Value Template (at the top level). 1054c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 1064c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @param elem The attribute value template object. 1074c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @return true if the sub expressions should be traversed. 1084c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 1094c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public boolean visitAVT(AVT elem) 1104c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 1114c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson return true; 1124c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 1134c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 1144c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 1154c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 1164c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Visit an extension element. 1174c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @param elem The extension object. 1184c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @return true if the sub expressions should be traversed. 1194c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 1204c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public boolean visitExtensionElement(ElemExtensionCall elem) 1214c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 1224c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson return true; 1234c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 1244c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 1254c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson} 1264c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 127