1 /* 2 * Javassist, a Java-bytecode translator toolkit. 3 * Copyright (C) 2004 Bill Burke. All Rights Reserved. 4 * 5 * The contents of this file are subject to the Mozilla Public License Version 6 * 1.1 (the "License"); you may not use this file except in compliance with 7 * the License. Alternatively, the contents of this file may be used under 8 * the terms of the GNU Lesser General Public License Version 2.1 or later, 9 * or the Apache License Version 2.0. 10 * 11 * Software distributed under the License is distributed on an "AS IS" basis, 12 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 13 * for the specific language governing rights and limitations under the 14 * License. 15 */ 16 17 package javassist.bytecode.annotation; 18 19 import java.io.IOException; 20 import java.lang.reflect.Method; 21 22 import javassist.ClassPool; 23 import javassist.bytecode.ConstPool; 24 25 /** 26 * Floating-point number constant value. 27 * 28 * @author <a href="mailto:bill@jboss.org">Bill Burke</a> 29 * @author Shigeru Chiba 30 * @version $Revision: 1.7 $ 31 */ 32 public class FloatMemberValue extends MemberValue { 33 int valueIndex; 34 35 /** 36 * Constructs a float constant value. The initial value is specified 37 * by the constant pool entry at the given index. 38 * 39 * @param index the index of a CONSTANT_Float_info structure. 40 */ FloatMemberValue(int index, ConstPool cp)41 public FloatMemberValue(int index, ConstPool cp) { 42 super('F', cp); 43 this.valueIndex = index; 44 } 45 46 /** 47 * Constructs a float constant value. 48 * 49 * @param f the initial value. 50 */ FloatMemberValue(float f, ConstPool cp)51 public FloatMemberValue(float f, ConstPool cp) { 52 super('F', cp); 53 setValue(f); 54 } 55 56 /** 57 * Constructs a float constant value. The initial value is 0.0. 58 */ FloatMemberValue(ConstPool cp)59 public FloatMemberValue(ConstPool cp) { 60 super('F', cp); 61 setValue(0.0F); 62 } 63 64 @Override getValue(ClassLoader cl, ClassPool cp, Method m)65 Object getValue(ClassLoader cl, ClassPool cp, Method m) { 66 return Float.valueOf(getValue()); 67 } 68 69 @Override getType(ClassLoader cl)70 Class<?> getType(ClassLoader cl) { 71 return float.class; 72 } 73 74 /** 75 * Obtains the value of the member. 76 */ getValue()77 public float getValue() { 78 return cp.getFloatInfo(valueIndex); 79 } 80 81 /** 82 * Sets the value of the member. 83 */ setValue(float newValue)84 public void setValue(float newValue) { 85 valueIndex = cp.addFloatInfo(newValue); 86 } 87 88 /** 89 * Obtains the string representation of this object. 90 */ 91 @Override toString()92 public String toString() { 93 return Float.toString(getValue()); 94 } 95 96 /** 97 * Writes the value. 98 */ 99 @Override write(AnnotationsWriter writer)100 public void write(AnnotationsWriter writer) throws IOException { 101 writer.constValueIndex(getValue()); 102 } 103 104 /** 105 * Accepts a visitor. 106 */ 107 @Override accept(MemberValueVisitor visitor)108 public void accept(MemberValueVisitor visitor) { 109 visitor.visitFloatMemberValue(this); 110 } 111 } 112