/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* $Id: ProcessorExsltFuncResult.java,v 1.7 2004/08/17 18:18:08 jycli Exp $
*/
package org.apache.xalan.processor;
import org.apache.xalan.templates.ElemExsltFuncResult;
import org.apache.xalan.templates.ElemExsltFunction;
import org.apache.xalan.templates.ElemParam;
import org.apache.xalan.templates.ElemTemplateElement;
import org.apache.xalan.templates.ElemVariable;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* This class processes parse events for an exslt func:result element.
* @xsl.usage internal
*/
public class ProcessorExsltFuncResult extends ProcessorTemplateElem
{
static final long serialVersionUID = 6451230911473482423L;
/**
* Verify that the func:result element does not appear within a variable,
* parameter, or another func:result, and that it belongs to a func:function
* element.
*/
public void startElement(
StylesheetHandler handler, String uri, String localName, String rawName, Attributes attributes)
throws SAXException
{
String msg = "";
super.startElement(handler, uri, localName, rawName, attributes);
ElemTemplateElement ancestor = handler.getElemTemplateElement().getParentElem();
while (ancestor != null && !(ancestor instanceof ElemExsltFunction))
{
if (ancestor instanceof ElemVariable
|| ancestor instanceof ElemParam
|| ancestor instanceof ElemExsltFuncResult)
{
msg = "func:result cannot appear within a variable, parameter, or another func:result.";
handler.error(msg, new SAXException(msg));
}
ancestor = ancestor.getParentElem();
}
if (ancestor == null)
{
msg = "func:result must appear in a func:function element";
handler.error(msg, new SAXException(msg));
}
}
}