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+/*
+ * reserved comment block
+ * DO NOT REMOVE OR ALTER!
+ */
+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
+ * <http://www.apache.org/>.
+ */
+
+import com.sun.org.apache.bcel.internal.Constants;
+import java.io.*;
+
+/**
+ * This class is derived from the abstract
+ * <A HREF="com.sun.org.apache.bcel.internal.classfile.Constant.html">Constant</A> class
+ * and represents a reference to a (external) class.
+ *
+ * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
+ * @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 + ")";
+ }
+}