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Java > Open Source Codes > edu > rice > cs > util > UnexpectedException


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33
34 package edu.rice.cs.util;
35
36 /**
37  * An exception which DrJava throws on an unexpected error.
38  * Many times, we have to catch BadLocationExceptions in
39  * code that accesses DefinitionDocument, even if we know for a
40  * fact that a BadLocationException cannot occur. In that case,
41  * and in other similar cases where we know that an exception should not
42  * occur, we throw this on the off chance that something does go wrong.
43  * This aids us in debugging the code.
44  * @version $Id: UnexpectedException.java 3901 2006-06-30 05:28:11Z rcartwright $
45  */
46 public class UnexpectedException extends RuntimeException JavaDoc {
47
48   private Throwable JavaDoc _value;
49
50    /** Constructs an unexpected exception with <code>value.toString()</code> as it's message. */
51   public UnexpectedException(Throwable JavaDoc value) {
52     super(value.toString());
53     _value = value;
54   }
55
56   /** Constructs an unexpected exception for value with custom message string + <code>value.toString()</code>. */
57   public UnexpectedException(Throwable JavaDoc value, String JavaDoc msg) {
58     super(msg + ": " + value.toString());
59     _value = value;
60   }
61   
62   /** Constructs a new RuntimeException to report that unreachable point in code has been reached */
63   public UnexpectedException() {
64     this(new RuntimeException JavaDoc("Unreachable point in code has been reached!"));
65   }
66
67   /** Constructs a new RuntimeException to report specified message */
68   public UnexpectedException(String JavaDoc msg) {
69     this(new RuntimeException JavaDoc(msg));
70   }
71
72   /** Returns the contained exception. */
73   public Throwable JavaDoc getCause() { return _value; }
74 }
75
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