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


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 analysis of an ADL definition.
31  */
32
33 public class ADLException 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 src where the error is located.
46    */
47   
48   public ADLException (final String JavaDoc msg, final Node src) {
49     super(src == null ? msg : msg + " (" + src.astGetSource() + ")");
50   }
51   
52   /**
53    * Constructs a new {@link ParserException}.
54    *
55    * @param msg a detail message.
56    * @param src where the error is located.
57    * @param e the exception that caused this exception.
58    */
59   
60   public ADLException (final String JavaDoc msg, final Node src, final Exception JavaDoc e) {
61     super(src == null ? msg : msg + " (" + src.astGetSource() + ")");
62     this.exception = e;
63   }
64   
65   /**
66    * Prints the stack backtrace.
67    */
68
69   public void printStackTrace () {
70     if (exception != null) {
71       System.err.println(this);
72       exception.printStackTrace();
73     } else {
74       super.printStackTrace();
75     }
76   }
77
78   /**
79    * Prints this exception and its backtrace to the specified print stream.
80    *
81    * @param s <tt>PrintStream</tt> to use for output.
82    */
83
84   public void printStackTrace (final PrintStream JavaDoc s) {
85     if (exception != null) {
86       s.println(this);
87       exception.printStackTrace(s);
88     } else {
89       super.printStackTrace(s);
90     }
91   }
92
93   /**
94    * Prints this exception and its backtrace to the specified print writer.
95    *
96    * @param s <tt>PrintWriter</tt> to use for output.
97    */
98
99   public void printStackTrace (final PrintWriter JavaDoc s) {
100     if (exception != null) {
101       s.write(this + "\n");
102       exception.printStackTrace(s);
103     } else {
104       super.printStackTrace(s);
105     }
106   }
107 }
108
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