package com.sun.org.apache.bcel.internal.classfile; /* ==================================================================== * The Apache Software License, Version 1.1 * * Copyright (c) 2001 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 "Apache" and "Apache Software Foundation" and * "Apache BCEL" 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", * "Apache BCEL", 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. For more * information on the Apache Software Foundation, please see * . */ import com.sun.org.apache.bcel.internal.Constants; import java.io.*; /** * This class is derived from the abstract * Constant class * and represents a reference to a (external) class. * * @version $Id: ConstantClass.java,v 1.1.2.1 2005/07/31 23:46:28 jeffsuttor Exp $ * @author M. Dahm * @see Constant */ public final class ConstantClass extends Constant implements ConstantObject { private int name_index; // Identical to ConstantString except for the name /** * Initialize from another object. */ public ConstantClass(ConstantClass c) { this(c.getNameIndex()); } /** * Initialize instance from file data. * * @param file Input stream * @throws IOException */ ConstantClass(DataInputStream file) throws IOException { this(file.readUnsignedShort()); } /** * @param name_index Name index in constant pool. Should refer to a * ConstantUtf8. */ public ConstantClass(int name_index) { super(Constants.CONSTANT_Class); this.name_index = name_index; } /** * Called by objects that are traversing the nodes of the tree implicitely * defined by the contents of a Java class. I.e., the hierarchy of methods, * fields, attributes, etc. spawns a tree of objects. * * @param v Visitor object */ public void accept(Visitor v) { v.visitConstantClass(this); } /** * Dump constant class to file stream in binary format. * * @param file Output file stream * @throws IOException */ public final void dump(DataOutputStream file) throws IOException { file.writeByte(tag); file.writeShort(name_index); } /** * @return Name index in constant pool of class name. */ public final int getNameIndex() { return name_index; } /** * @param name_index. */ public final void setNameIndex(int name_index) { this.name_index = name_index; } /** @return String object */ public Object getConstantValue(ConstantPool cp) { Constant c = cp.getConstant(name_index, Constants.CONSTANT_Utf8); return ((ConstantUtf8)c).getBytes(); } /** @return dereferenced string */ public String getBytes(ConstantPool cp) { return (String)getConstantValue(cp); } /** * @return String representation. */ public final String toString() { return super.toString() + "(name_index = " + name_index + ")"; } }
