1 /*
2 * $Source: /usr/cvsroot/melati/maven-dsd-plugin/src/main/java/org/melati/poem/prepro/ParsingDSDException.java,v $
3 * $Revision: 1.14 $
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 String expected, got;
65 int lineNumber;
66 String message;
67 FieldDef field = null;
68
69 /**
70 * Constructor.
71 */
72 ParsingDSDException() {
73 super();
74 }
75
76 ParsingDSDException(String expected, String got) {
77 this.expected = expected;
78 this.got = "\"" + got + "\"";
79 }
80
81 ParsingDSDException(String expected, StreamTokenizer got) {
82 this.expected = expected;
83 this.got = "\"" + got.toString() + "\"";
84 this.lineNumber = got.lineno();
85 }
86
87 ParsingDSDException(String expected,
88 String got, StreamTokenizer context) {
89 this.expected = expected;
90 this.got = "\"" + got + "\" near " + context.toString();
91 this.lineNumber = context.lineno();
92 }
93
94 ParsingDSDException(int lineNo, String error) {
95 this.message = error;
96 this.lineNumber = lineNo;
97 }
98
99 /** @return the message */
100 public String getMessage() {
101 String returnString = "";
102 if (lineNumber != 0)
103 returnString = "Definition ending on line " + lineNumber + ": ";
104 if (expected != null)
105 returnString = returnString + "Expected \"" + expected +
106 "\" but got " + got + "\n";
107 if (message != null)
108 returnString = returnString + message;
109 return returnString;
110 }
111 }