1   package org.apache.bcel.verifier.structurals;
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  
57  import org.apache.bcel.*;
58  import org.apache.bcel.generic.*;
59  
60  /***
61   * This class represents an uninitialized object type; see The Java
62   * Virtual Machine Specification, Second Edition, page 147: 4.9.4 for
63   * more details.
64   *
65   * @version $Id: UninitializedObjectType.java,v 1.1.1.1 2001/10/29 20:00:42 jvanzyl Exp $
66   * @author <A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A>
67   */
68  public class UninitializedObjectType extends ReferenceType implements Constants{
69  
70  	/*** The "initialized" version. */
71  	private ObjectType initialized;
72  	
73  	/*** Creates a new instance. */
74  	public UninitializedObjectType(ObjectType t){
75  		super(T_UNKNOWN, "<UNINITIALIZED OBJECT OF TYPE '"+t.getClassName()+"'>");
76  		initialized = t;
77  	}
78  
79  	/***
80  	 * Returns the ObjectType of the same class as the one of the uninitialized object
81  	 * represented by this UninitializedObjectType instance.
82  	 */
83  	public ObjectType getInitialized(){
84  		return initialized;
85  	}
86  
87  	/***
88  	 * Returns true on equality of this and o.
89  	 * Equality means the ObjectType instances of "initialized"
90  	 * equal one another in this and the o instance.
91  	 *
92  	 */
93  	public boolean equals(Object o){
94  		if (! (o instanceof UninitializedObjectType)) return false;
95  		return initialized.equals(((UninitializedObjectType)o).initialized);
96  	}
97  }
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