1 /* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 */ 4 /* 5 * Licensed to the Apache Software Foundation (ASF) under one or more 6 * contributor license agreements. See the NOTICE file distributed with 7 * this work for additional information regarding copyright ownership. 8 * The ASF licenses this file to You under the Apache License, Version 2.0 9 * (the "License"); you may not use this file except in compliance with 10 * the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 21 package com.sun.org.apache.bcel.internal.classfile; 22 23 24 import com.sun.org.apache.bcel.internal.Constants; 25 import java.io.*; 26 27 /** 28 * This class is derived from the abstract 29 * <A HREF="com.sun.org.apache.bcel.internal.classfile.Constant.html">Constant</A> class 30 * and represents a reference to a float object. 31 * 32 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 33 * @see Constant 34 */ 35 public final class ConstantFloat extends Constant implements ConstantObject { 36 private float bytes; 37 38 /** 39 * @param bytes Data 40 */ 41 public ConstantFloat(float bytes) 42 { 43 super(Constants.CONSTANT_Float); 44 this.bytes = bytes; 45 } 46 /** 47 * Initialize from another object. Note that both objects use the same 48 * references (shallow copy). Use clone() for a physical copy. 49 */ 50 public ConstantFloat(ConstantFloat c) { 51 this(c.getBytes()); 52 } 53 /** 54 * Initialize instance from file data. 55 * 56 * @param file Input stream 57 * @throws IOException 58 */ 59 ConstantFloat(DataInputStream file) throws IOException 60 { 61 this(file.readFloat()); 62 } 63 /** 64 * Called by objects that are traversing the nodes of the tree implicitely 65 * defined by the contents of a Java class. I.e., the hierarchy of methods, 66 * fields, attributes, etc. spawns a tree of objects. 67 * 68 * @param v Visitor object 69 */ 70 public void accept(Visitor v) { 71 v.visitConstantFloat(this); 72 } 73 /** 74 * Dump constant float to file stream in binary format. 75 * 76 * @param file Output file stream 77 * @throws IOException 78 */ 79 public final void dump(DataOutputStream file) throws IOException 80 { 81 file.writeByte(tag); 82 file.writeFloat(bytes); 83 } 84 /** 85 * @return data, i.e., 4 bytes. 86 */ 87 public final float getBytes() { return bytes; } 88 /** 89 * @param bytes. 90 */ 91 public final void setBytes(float bytes) { 92 this.bytes = bytes; 93 } 94 95 /** 96 * @return String representation. 97 */ 98 public final String toString() { 99 return super.toString() + "(bytes = " + bytes + ")"; 100 } 101 102 /** @return Float object 103 */ 104 public Object getConstantValue(ConstantPool cp) { 105 return bytes; 106 } 107 }