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Java > Open Source Codes > com > sun > org > apache > bcel > internal > generic > BasicType


1 package com.sun.org.apache.bcel.internal.generic;
2
3 /* ====================================================================
4  * The Apache Software License, Version 1.1
5  *
6  * Copyright (c) 2001 The Apache Software Foundation. All rights
7  * reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution,
22  * if any, must include the following acknowledgment:
23  * "This product includes software developed by the
24  * Apache Software Foundation (http://www.apache.org/)."
25  * Alternately, this acknowledgment may appear in the software itself,
26  * if and wherever such third-party acknowledgments normally appear.
27  *
28  * 4. The names "Apache" and "Apache Software Foundation" and
29  * "Apache BCEL" must not be used to endorse or promote products
30  * derived from this software without prior written permission. For
31  * written permission, please contact apache@apache.org.
32  *
33  * 5. Products derived from this software may not be called "Apache",
34  * "Apache BCEL", nor may "Apache" appear in their name, without
35  * prior written permission of the Apache Software Foundation.
36  *
37  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40  * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48  * SUCH DAMAGE.
49  * ====================================================================
50  *
51  * This software consists of voluntary contributions made by many
52  * individuals on behalf of the Apache Software Foundation. For more
53  * information on the Apache Software Foundation, please see
54  * <http://www.apache.org/>.
55  */
56 import com.sun.org.apache.bcel.internal.Constants;
57
58 /**
59  * Denotes basic type such as int.
60  *
61  * @version $Id: BasicType.java,v 1.1.1.1 2001/10/29 20:00:06 jvanzyl Exp $
62  * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
63  */
64 public final class BasicType extends Type {
65   /**
66    * Constructor for basic types such as int, long, `void'
67    *
68    * @param type one of T_INT, T_BOOLEAN, ..., T_VOID
69    * @see com.sun.org.apache.bcel.internal.Constants
70    */
71   BasicType(byte type) {
72     super(type, Constants.SHORT_TYPE_NAMES[type]);
73
74     if((type < Constants.T_BOOLEAN) || (type > Constants.T_VOID))
75       throw new ClassGenException("Invalid type: " + type);
76   }
77
78   public static final BasicType getType(byte type) {
79     switch(type) {
80     case Constants.T_VOID: return VOID;
81     case Constants.T_BOOLEAN: return BOOLEAN;
82     case Constants.T_BYTE: return BYTE;
83     case Constants.T_SHORT: return SHORT;
84     case Constants.T_CHAR: return CHAR;
85     case Constants.T_INT: return INT;
86     case Constants.T_LONG: return LONG;
87     case Constants.T_DOUBLE: return DOUBLE;
88     case Constants.T_FLOAT: return FLOAT;
89
90     default:
91       throw new ClassGenException("Invalid type: " + type);
92     }
93   }
94
95   /** @return true if both type objects refer to the same type
96    */
97   public boolean equals(Object JavaDoc type) {
98     return (type instanceof BasicType)?
99       ((BasicType)type).type == this.type : false;
100   }
101 }
102
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