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 *
10 * Software distributed under the License is distributed on an "AS IS" basis,
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 * for the specific language governing rights and limitations under the
13 * License.
14 */
15
16package javassist.bytecode.annotation;
17
18import javassist.ClassPool;
19import javassist.bytecode.ConstPool;
20import java.io.IOException;
21import java.lang.reflect.Method;
22
23/**
24 * Floating-point number constant value.
25 *
26 * @author <a href="mailto:bill@jboss.org">Bill Burke</a>
27 * @author Shigeru Chiba
28 * @version $Revision: 1.7 $
29 */
30public class FloatMemberValue extends MemberValue {
31    int valueIndex;
32
33    /**
34     * Constructs a float constant value.  The initial value is specified
35     * by the constant pool entry at the given index.
36     *
37     * @param index     the index of a CONSTANT_Float_info structure.
38     */
39    public FloatMemberValue(int index, ConstPool cp) {
40        super('F', cp);
41        this.valueIndex = index;
42    }
43
44    /**
45     * Constructs a float constant value.
46     *
47     * @param f         the initial value.
48     */
49    public FloatMemberValue(float f, ConstPool cp) {
50        super('F', cp);
51        setValue(f);
52    }
53
54    /**
55     * Constructs a float constant value.  The initial value is 0.0.
56     */
57    public FloatMemberValue(ConstPool cp) {
58        super('F', cp);
59        setValue(0.0F);
60    }
61
62    Object getValue(ClassLoader cl, ClassPool cp, Method m) {
63        return new Float(getValue());
64    }
65
66    Class getType(ClassLoader cl) {
67        return float.class;
68    }
69
70    /**
71     * Obtains the value of the member.
72     */
73    public float getValue() {
74        return cp.getFloatInfo(valueIndex);
75    }
76
77    /**
78     * Sets the value of the member.
79     */
80    public void setValue(float newValue) {
81        valueIndex = cp.addFloatInfo(newValue);
82    }
83
84    /**
85     * Obtains the string representation of this object.
86     */
87    public String toString() {
88        return Float.toString(getValue());
89    }
90
91    /**
92     * Writes the value.
93     */
94    public void write(AnnotationsWriter writer) throws IOException {
95        writer.constValueIndex(getValue());
96    }
97
98    /**
99     * Accepts a visitor.
100     */
101    public void accept(MemberValueVisitor visitor) {
102        visitor.visitFloatMemberValue(this);
103    }
104}
105