- /*
- * 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: FuncCurrent.java,v 1.13 2004/02/17 04:34:01 minchau Exp $
- */
- package com.sun.org.apache.xpath.internal.functions;
-
- import com.sun.org.apache.xml.internal.dtm.DTM;
- import com.sun.org.apache.xml.internal.dtm.DTMIterator;
- import com.sun.org.apache.xpath.internal.XPathContext;
- import com.sun.org.apache.xpath.internal.axes.LocPathIterator;
- import com.sun.org.apache.xpath.internal.axes.PredicatedNodeTest;
- import com.sun.org.apache.xpath.internal.objects.XNodeSet;
- import com.sun.org.apache.xpath.internal.objects.XObject;
- import com.sun.org.apache.xpath.internal.axes.SubContextList;
- import com.sun.org.apache.xpath.internal.patterns.StepPattern;
- import com.sun.org.apache.xalan.internal.res.XSLMessages;
- import com.sun.org.apache.xalan.internal.res.XSLTErrorResources;
-
-
- /**
- * Execute the current() function.
- * @xsl.usage advanced
- */
- public class FuncCurrent extends Function
- {
-
- /**
- * Execute the function. The function must return
- * a valid object.
- * @param xctxt The current execution context.
- * @return A valid XObject.
- *
- * @throws javax.xml.transform.TransformerException
- */
- public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
- {
-
- SubContextList subContextList = xctxt.getCurrentNodeList();
- int currentNode = DTM.NULL;
-
- if (null != subContextList) {
- if (subContextList instanceof PredicatedNodeTest) {
- LocPathIterator iter = ((PredicatedNodeTest)subContextList)
- .getLocPathIterator();
- currentNode = iter.getCurrentContextNode();
- } else if(subContextList instanceof StepPattern) {
- throw new RuntimeException(XSLMessages.createMessage(
- XSLTErrorResources.ER_PROCESSOR_ERROR,null));
- }
- } else {
- // not predicate => ContextNode == CurrentNode
- currentNode = xctxt.getContextNode();
- }
- return new XNodeSet(currentNode, xctxt.getDTMManager());
- }
-
- /**
- * No arguments to process, so this does nothing.
- */
- public void fixupVariables(java.util.Vector vars, int globalsSize)
- {
- // no-op
- }
-
- }