01: /*
02: * <copyright>
03: *
04: * Copyright 1997-2004 BBNT Solutions, LLC
05: * under sponsorship of the Defense Advanced Research Projects
06: * Agency (DARPA).
07: *
08: * You can redistribute this software and/or modify it under the
09: * terms of the Cougaar Open Source License as published on the
10: * Cougaar Open Source Website (www.cougaar.org).
11: *
12: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
13: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
14: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
15: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
16: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
17: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
18: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23: *
24: * </copyright>
25: */
26:
27: package org.cougaar.lib.contract.lang;
28:
29: /**
30: * An <code>org.cougaar.lib.contract.Operator</code> parse failure.
31: */
32: public class ParseException extends Exception {
33:
34: private StringBuffer trace;
35: private String cacheTrace;
36:
37: private ParseException() {
38: }
39:
40: public ParseException(String s) {
41: if (s != null) {
42: trace = new StringBuffer(s.trim());
43: trace.append("\nTrace:\n");
44: } else {
45: trace = new StringBuffer(
46: "Unknown Parse Exception\nTrace:\n");
47: }
48: }
49:
50: public ParseException(Exception e) {
51: this (e.toString());
52: //e.printStackTrace();
53: }
54:
55: public void addTrace(String line) {
56: trace.append(" \"at ");
57: if (line != null) {
58: trace.append(line).append("\"\n");
59: } else {
60: trace.append("<Unknown line>\"\n");
61: }
62: }
63:
64: /**
65: * Override <code>java.lang.Exception</code>'s <tt>getMessage</tt> with
66: * our custom trace message.
67: */
68: public String getMessage() {
69: if (cacheTrace == null) {
70: cacheTrace = trace.toString();
71: }
72: return cacheTrace;
73: }
74: }
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