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Java > Open Source Codes > com > sun > org > apache > bcel > internal > verifier > exc > VerifierConstraintViolatedException


1 package com.sun.org.apache.bcel.internal.verifier.exc;
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
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48  * SUCH DAMAGE.
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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 /**
58  * Instances of this class are thrown by BCEL's class file verifier "JustIce"
59  * whenever
60  * verification proves that some constraint of a class file (as stated in the
61  * Java Virtual Machine Specification, Edition 2) is violated.
62  * This is roughly equivalent to the VerifyError the JVM-internal verifiers
63  * throw.
64  *
65  * @version $Id: VerifierConstraintViolatedException.java,v 1.1.1.1 2001/10/29 20:00:34 jvanzyl Exp $
66  * @author <A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A>
67  */
68 public abstract class VerifierConstraintViolatedException extends RuntimeException JavaDoc{
69     // /** The name of the offending class that did not pass the verifier. */
70 // String name_of_offending_class;
71
72     /** The specified error message. */
73     private String JavaDoc detailMessage;
74     /**
75      * Constructs a new VerifierConstraintViolatedException with null as its error message string.
76      */
77     VerifierConstraintViolatedException(){
78         super();
79     }
80     /**
81      * Constructs a new VerifierConstraintViolatedException with the specified error message.
82      */
83     VerifierConstraintViolatedException(String JavaDoc message){
84         super(message); // Not that important
85 detailMessage = message;
86     }
87
88
89     /** Extends the error message with a string before ("pre") and after ("post") the
90         'old' error message. All of these three strings are allowed to be null, and null
91         is always replaced by the empty string (""). In particular, after invoking this
92         method, the error message of this object can no longer be null.
93     */
94     public void extendMessage(String JavaDoc pre, String JavaDoc post){
95         if (pre == null) pre="";
96         if (detailMessage == null) detailMessage="";
97         if (post == null) post="";
98         detailMessage = pre+detailMessage+post;
99     }
100     /**
101      * Returns the error message string of this VerifierConstraintViolatedException object.
102      * @return the error message string of this VerifierConstraintViolatedException.
103      */
104     public String JavaDoc getMessage(){
105         return detailMessage;
106     }
107 }
108
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