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1 package org.apache.bcel.classfile; 2 3 /* ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2001 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation" and 29 * "Apache BCEL" must not be used to endorse or promote products 30 * derived from this software without prior written permission. For 31 * written permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache", 34 * "Apache BCEL", nor may "Apache" appear in their name, without 35 * prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>;. 55 */ 56 57 import org.apache.bcel.Constants; 58 import java.io.*; 59 60 /*** 61 * This class is derived from the abstract 62 * <A HREF="org.apache.bcel.classfile.Constant.html">Constant</A> class 63 * and represents a reference to a float object. 64 * 65 * @version $Id: ConstantFloat.java,v 1.2 2002/03/11 16:16:35 mdahm Exp $ 66 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 67 * @see Constant 68 */ 69 public final class ConstantFloat extends Constant implements ConstantObject { 70 private float bytes; 71 72 /*** 73 * @param bytes Data 74 */ 75 public ConstantFloat(float bytes) 76 { 77 super(Constants.CONSTANT_Float); 78 this.bytes = bytes; 79 } 80 /*** 81 * Initialize from another object. Note that both objects use the same 82 * references (shallow copy). Use clone() for a physical copy. 83 */ 84 public ConstantFloat(ConstantFloat c) { 85 this(c.getBytes()); 86 } 87 /*** 88 * Initialize instance from file data. 89 * 90 * @param file Input stream 91 * @throws IOException 92 */ 93 ConstantFloat(DataInputStream file) throws IOException 94 { 95 this(file.readFloat()); 96 } 97 /*** 98 * Called by objects that are traversing the nodes of the tree implicitely 99 * defined by the contents of a Java class. I.e., the hierarchy of methods, 100 * fields, attributes, etc. spawns a tree of objects. 101 * 102 * @param v Visitor object 103 */ 104 public void accept(Visitor v) { 105 v.visitConstantFloat(this); 106 } 107 /*** 108 * Dump constant float to file stream in binary format. 109 * 110 * @param file Output file stream 111 * @throws IOException 112 */ 113 public final void dump(DataOutputStream file) throws IOException 114 { 115 file.writeByte(tag); 116 file.writeFloat(bytes); 117 } 118 /*** 119 * @return data, i.e., 4 bytes. 120 */ 121 public final float getBytes() { return bytes; } 122 /*** 123 * @param bytes. 124 */ 125 public final void setBytes(float bytes) { 126 this.bytes = bytes; 127 } 128 129 /*** 130 * @return String representation. 131 */ 132 public final String toString() { 133 return super.toString() + "(bytes = " + bytes + ")"; 134 } 135 136 /*** @return Float object 137 */ 138 public Object getConstantValue(ConstantPool cp) { 139 return new Float(bytes); 140 } 141 }

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