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 * Integer constant value.
25 *
26 * @author <a href="mailto:bill@jboss.org">Bill Burke</a>
27 * @author Shigeru Chiba
28 */
29public class IntegerMemberValue extends MemberValue {
30    int valueIndex;
31
32    /**
33     * Constructs an int constant value.  The initial value is specified
34     * by the constant pool entry at the given index.
35     *
36     * @param index     the index of a CONSTANT_Integer_info structure.
37     */
38    public IntegerMemberValue(int index, ConstPool cp) {
39        super('I', cp);
40        this.valueIndex = index;
41    }
42
43    /**
44     * Constructs an int constant value.
45     * Note that this constructor receives <b>the initial value
46     * as the second parameter</b>
47     * unlike the corresponding constructors in the sibling classes.
48     * This is for making a difference from the constructor that receives
49     * an index into the constant pool table as the first parameter.
50     * Note that the index is also int type.
51     *
52     * @param value         the initial value.
53     */
54    public IntegerMemberValue(ConstPool cp, int value) {
55        super('I', cp);
56        setValue(value);
57    }
58
59    /**
60     * Constructs an int constant value.  The initial value is 0.
61     */
62    public IntegerMemberValue(ConstPool cp) {
63        super('I', cp);
64        setValue(0);
65    }
66
67    Object getValue(ClassLoader cl, ClassPool cp, Method m) {
68        return new Integer(getValue());
69    }
70
71    Class getType(ClassLoader cl) {
72        return int.class;
73    }
74
75    /**
76     * Obtains the value of the member.
77     */
78    public int getValue() {
79        return cp.getIntegerInfo(valueIndex);
80    }
81
82    /**
83     * Sets the value of the member.
84     */
85    public void setValue(int newValue) {
86        valueIndex = cp.addIntegerInfo(newValue);
87    }
88
89    /**
90     * Obtains the string representation of this object.
91     */
92    public String toString() {
93        return Integer.toString(getValue());
94    }
95
96    /**
97     * Writes the value.
98     */
99    public void write(AnnotationsWriter writer) throws IOException {
100        writer.constValueIndex(getValue());
101    }
102
103    /**
104     * Accepts a visitor.
105     */
106    public void accept(MemberValueVisitor visitor) {
107        visitor.visitIntegerMemberValue(this);
108    }
109}
110