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Java > Open Source Codes > org > eclipse > jdt > internal > compiler > impl > IntConstant


1 /*******************************************************************************
2  * Copyright (c) 2000, 2006 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.jdt.internal.compiler.impl;
12
13 public class IntConstant extends Constant {
14     
15     int value;
16     
17     private static final IntConstant MINUS_FOUR = new IntConstant(-4);
18     private static final IntConstant MINUS_THREE = new IntConstant(-3);
19     private static final IntConstant MINUS_TWO = new IntConstant(-2);
20     private static final IntConstant MINUS_ONE = new IntConstant(-1);
21     private static final IntConstant ZERO = new IntConstant(0);
22     private static final IntConstant ONE = new IntConstant(1);
23     private static final IntConstant TWO = new IntConstant(2);
24     private static final IntConstant THREE = new IntConstant(3);
25     private static final IntConstant FOUR = new IntConstant(4);
26     private static final IntConstant FIVE = new IntConstant(5);
27     private static final IntConstant SIX = new IntConstant(6);
28     private static final IntConstant SEVEN = new IntConstant(7);
29     private static final IntConstant EIGHT= new IntConstant(8);
30     private static final IntConstant NINE = new IntConstant(9);
31     private static final IntConstant TEN = new IntConstant(10);
32     
33     public static Constant fromValue(int value) {
34
35         switch (value) {
36             case -4 : return IntConstant.MINUS_FOUR;
37             case -3 : return IntConstant.MINUS_THREE;
38             case -2 : return IntConstant.MINUS_TWO;
39             case -1 : return IntConstant.MINUS_ONE;
40             case 0 : return IntConstant.ZERO;
41             case 1 : return IntConstant.ONE;
42             case 2 : return IntConstant.TWO;
43             case 3 : return IntConstant.THREE;
44             case 4 : return IntConstant.FOUR;
45             case 5 : return IntConstant.FIVE;
46             case 6 : return IntConstant.SIX;
47             case 7 : return IntConstant.SEVEN;
48             case 8 : return IntConstant.EIGHT;
49             case 9 : return IntConstant.NINE;
50             case 10 : return IntConstant.TEN;
51         }
52         return new IntConstant(value);
53     }
54     
55     private IntConstant(int value) {
56         this.value = value;
57     }
58     
59     public byte byteValue() {
60         return (byte) value;
61     }
62     
63     public char charValue() {
64         return (char) value;
65     }
66     
67     public double doubleValue() {
68         return value; // implicit cast to return type
69 }
70     
71     public float floatValue() {
72         return value; // implicit cast to return type
73 }
74     
75     public int intValue() {
76         return value;
77     }
78     
79     public long longValue() {
80         return value; // implicit cast to return type
81 }
82     
83     public short shortValue() {
84         return (short) value;
85     }
86     
87     public String JavaDoc stringValue() {
88         //spec 15.17.11
89 return String.valueOf(this.value);
90     }
91
92     public String JavaDoc toString() {
93         return "(int)" + value; //$NON-NLS-1$
94 }
95
96     public int typeID() {
97         return T_int;
98     }
99 }
100
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