001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements. See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership. The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the "License");
007 * you may not use this file except in compliance with the License.
008 * You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018 /*
019 * $Id: LocalNameCall.java 468650 2006-10-28 07:03:30Z minchau $
020 */
021
022 package org.apache.xalan.xsltc.compiler;
023
024 import java.util.Vector;
025
026 import org.apache.bcel.generic.ConstantPoolGen;
027 import org.apache.bcel.generic.INVOKEINTERFACE;
028 import org.apache.bcel.generic.INVOKESTATIC;
029 import org.apache.bcel.generic.InstructionList;
030 import org.apache.xalan.xsltc.compiler.util.ClassGenerator;
031 import org.apache.xalan.xsltc.compiler.util.MethodGenerator;
032
033 /**
034 * @author Morten Jorgensen
035 */
036 final class LocalNameCall extends NameBase {
037
038 /**
039 * Handles calls with no parameter (current node is implicit parameter).
040 */
041 public LocalNameCall(QName fname) {
042 super(fname);
043 }
044
045 /**
046 * Handles calls with one parameter (either node or node-set).
047 */
048 public LocalNameCall(QName fname, Vector arguments) {
049 super(fname, arguments);
050 }
051
052 /**
053 * This method is called when the constructor is compiled in
054 * Stylesheet.compileConstructor() and not as the syntax tree is traversed.
055 */
056 public void translate(ClassGenerator classGen,
057 MethodGenerator methodGen) {
058 final ConstantPoolGen cpg = classGen.getConstantPool();
059 final InstructionList il = methodGen.getInstructionList();
060
061 // Returns the name of a node in the DOM
062 final int getNodeName = cpg.addInterfaceMethodref(DOM_INTF,
063 "getNodeName",
064 "(I)"+STRING_SIG);
065
066 final int getLocalName = cpg.addMethodref(BASIS_LIBRARY_CLASS,
067 "getLocalName",
068 "(Ljava/lang/String;)"+
069 "Ljava/lang/String;");
070 super.translate(classGen, methodGen);
071 il.append(new INVOKEINTERFACE(getNodeName, 2));
072 il.append(new INVOKESTATIC(getLocalName));
073 }
074 }