1 /*
2 * $Source$
3 * $Revision$
4 *
5 * Copyright (C) 2000 William Chesters
6 *
7 * Part of Melati (http://melati.org), a framework for the rapid
8 * development of clean, maintainable web applications.
9 *
10 * Melati is free software; Permission is granted to copy, distribute
11 * and/or modify this software under the terms either:
12 *
13 * a) the GNU General Public License as published by the Free Software
14 * Foundation; either version 2 of the License, or (at your option)
15 * any later version,
16 *
17 * or
18 *
19 * b) any version of the Melati Software License, as published
20 * at http://melati.org
21 *
22 * You should have received a copy of the GNU General Public License and
23 * the Melati Software License along with this program;
24 * if not, write to the Free Software Foundation, Inc.,
25 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
26 * GNU General Public License and visit http://melati.org to obtain the
27 * Melati Software License.
28 *
29 * Feel free to contact the Developers of Melati (http://melati.org),
30 * if you would like to work out a different arrangement than the options
31 * outlined here. It is our intention to allow Melati to be used by as
32 * wide an audience as possible.
33 *
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
38 *
39 * Contact details for copyright holder:
40 *
41 * William Chesters <williamc At paneris.org>
42 * http://paneris.org/~williamc
43 * Obrechtstraat 114, 2517VX Den Haag, The Netherlands
44 */
45
46 package org.melati.poem.prepro;
47
48 import java.io.StreamTokenizer;
49
50
51 /**
52 * Thrown when an unexpected token is encountered during parsing.
53 * Accommodates following types of error.
54 * Syntactic assertion failures where the tokens found do not match
55 * those expected.
56 * Vocabulary failures where values are outside the token set.
57 * Model violations where legal expressions cannot actually be
58 * implemented, such as String troid columns.
59 * Limitations on tables which must be either abstract or populated
60 * and must not hide a table in this or an imported DSD.
61 */
62 class ParsingDSDException extends RuntimeException {
63
64 private static final long serialVersionUID = 8913017013506544549L;
65 String expected, got;
66 int lineNumber;
67 String message;
68 FieldDef field = null;
69
70 /**
71 * Constructor.
72 */
73 ParsingDSDException() {
74 super();
75 }
76
77 ParsingDSDException(String expected, String got) {
78 this.expected = expected;
79 this.got = "\"" + got + "\"";
80 }
81
82 ParsingDSDException(String expected, StreamTokenizer got) {
83 this.expected = expected;
84 this.got = "\"" + got.toString() + "\"";
85 this.lineNumber = got.lineno();
86 }
87
88 ParsingDSDException(String expected,
89 String got, StreamTokenizer context) {
90 this.expected = expected;
91 this.got = "\"" + got + "\" near " + context.toString();
92 this.lineNumber = context.lineno();
93 }
94
95 ParsingDSDException(int lineNo, String error) {
96 this.message = error;
97 this.lineNumber = lineNo;
98 }
99
100 /** @return the message */
101 public String getMessage() {
102 String returnString = "";
103 if (lineNumber != 0)
104 returnString = "Definition ending on line " + lineNumber + ": ";
105 if (expected != null)
106 returnString = returnString + "Expected \"" + expected +
107 "\" but got " + got + "\n";
108 if (message != null)
109 returnString = returnString + message;
110 return returnString;
111 }
112 }