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Java > Open Source Codes > org > objectweb > fractal > adl > ParserException


1 /***
2  * Fractal ADL Parser
3  * Copyright (C) 2002-2004 France Telecom R&D
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  *
19  * Contact: Eric.Bruneton@rd.francetelecom.com
20  *
21  * Author: Eric Bruneton
22  */
23
24 package org.objectweb.fractal.adl;
25
26 import java.io.PrintStream JavaDoc;
27 import java.io.PrintWriter JavaDoc;
28
29 /**
30  * Thrown when an error occurs during the parsing of a file.
31  */
32
33 public class ParserException extends Exception JavaDoc {
34
35   /**
36    * The exception that caused this exception. May be <tt>null</tt>.
37    */
38   
39   private Exception JavaDoc exception;
40   
41   /**
42    * Constructs a new {@link ParserException}.
43    *
44    * @param msg a detail message.
45    * @param e the exception that caused this exception.
46    */
47   
48   public ParserException (final String JavaDoc msg, final Exception JavaDoc e) {
49     super(msg);
50     this.exception = e;
51   }
52
53   /**
54    * Prints the stack backtrace.
55    */
56
57   public void printStackTrace () {
58     if (exception != null) {
59       System.err.println(this);
60       exception.printStackTrace();
61     } else {
62       super.printStackTrace();
63     }
64   }
65
66   /**
67    * Prints this exception and its backtrace to the specified print stream.
68    *
69    * @param s <tt>PrintStream</tt> to use for output.
70    */
71
72   public void printStackTrace (final PrintStream JavaDoc s) {
73     if (exception != null) {
74       s.println(this);
75       exception.printStackTrace(s);
76     } else {
77       super.printStackTrace(s);
78     }
79   }
80
81   /**
82    * Prints this exception and its backtrace to the specified print writer.
83    *
84    * @param s <tt>PrintWriter</tt> to use for output.
85    */
86
87   public void printStackTrace (final PrintWriter JavaDoc s) {
88     if (exception != null) {
89       s.write(this + "\n");
90       exception.printStackTrace(s);
91     } else {
92       super.printStackTrace(s);
93     }
94   }
95 }
96
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