1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */
27 package com.sun.xml.internal.xsom.impl.scd;
28
29 import java.util.List;
30
31 /**
32 * This exception is thrown when parse errors are encountered.
33 * You can explicitly create objects of this exception type by
34 * calling the method generateParseException in the generated
35 * parser.
36 *
37 * You can modify this class to customize your error reporting
38 * mechanisms so long as you retain the public fields.
39 */
40 public class ParseException extends Exception {
41
42 /**
43 * This constructor is used by the method "generateParseException"
44 * in the generated parser. Calling this constructor generates
45 * a new object of this type with the fields "currentToken",
46 * "expectedTokenSequences", and "tokenImage" set. The boolean
47 * flag "specialConstructor" is also set to true to indicate that
48 * this constructor was used to create this object.
49 * This constructor calls its super class with the empty string
50 * to force the "toString" method of parent class "Throwable" to
51 * print the error message in the form:
52 * ParseException: <result of getMessage>
53 */
54 public ParseException(Token currentTokenVal,
55 int[][] expectedTokenSequencesVal,
56 List<String> tokenImageVal
57 )
58 {
59 super("");
60 specialConstructor = true;
61 currentToken = currentTokenVal;
62 expectedTokenSequences = expectedTokenSequencesVal;
63 tokenImage = tokenImageVal;
64 }
65
66 /**
67 * The following constructors are for use by you for whatever
68 * purpose you can think of. Constructing the exception in this
69 * manner makes the exception behave in the normal way - i.e., as
70 * documented in the class "Throwable". The fields "errorToken",
71 * "expectedTokenSequences", and "tokenImage" do not contain
72 * relevant information. The JavaCC generated code does not use
73 * these constructors.
74 */
75
76 public ParseException() {
77 super();
78 specialConstructor = false;
79 }
80
81 public ParseException(String message) {
82 super(message);
83 specialConstructor = false;
84 }
85
86 /**
87 * This variable determines which constructor was used to create
88 * this object and thereby affects the semantics of the
89 * "getMessage" method (see below).
90 */
91 protected boolean specialConstructor;
92
93 /**
94 * This is the last token that has been consumed successfully. If
95 * this object has been created due to a parse error, the token
96 * followng this token will (therefore) be the first error token.
97 */
98 public Token currentToken;
99
100 /**
101 * Each entry in this array is an array of integers. Each array
102 * of integers represents a sequence of tokens (by their ordinal
103 * values) that is expected at this point of the parse.
104 */
105 public int[][] expectedTokenSequences;
106
107 /**
108 * This is a reference to the "tokenImage" array of the generated
109 * parser within which the parse error occurred. This array is
110 * defined in the generated ...Constants interface.
111 */
112 public List<String> tokenImage;
113
114 /**
115 * This method has the standard behavior when this object has been
116 * created using the standard constructors. Otherwise, it uses
117 * "currentToken" and "expectedTokenSequences" to generate a parse
118 * error message and returns it. If this object has been created
119 * due to a parse error, and you do not catch it (it gets thrown
120 * from the parser), then this method is called during the printing
121 * of the final stack trace, and hence the correct error message
122 * gets displayed.
123 */
124 public String getMessage() {
125 if (!specialConstructor) {
126 return super.getMessage();
127 }
128 StringBuffer expected = new StringBuffer();
129 int maxSize = 0;
130 for (int i = 0; i < expectedTokenSequences.length; i++) {
131 if (maxSize < expectedTokenSequences[i].length) {
132 maxSize = expectedTokenSequences[i].length;
133 }
134 for (int j = 0; j < expectedTokenSequences[i].length; j++) {
135 expected.append(tokenImage.get(expectedTokenSequences[i][j])).append(" ");
136 }
137 if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
138 expected.append("...");
139 }
140 expected.append(eol).append(" ");
141 }
142 String retval = "Encountered \"";
143 Token tok = currentToken.next;
144 for (int i = 0; i < maxSize; i++) {
145 if (i != 0) retval += " ";
146 if (tok.kind == 0) {
147 retval += tokenImage.get(0);
148 break;
149 }
150 retval += add_escapes(tok.image);
151 tok = tok.next;
152 }
153 retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
154 retval += "." + eol;
155 if (expectedTokenSequences.length == 1) {
156 retval += "Was expecting:" + eol + " ";
157 } else {
158 retval += "Was expecting one of:" + eol + " ";
159 }
160 retval += expected.toString();
161 return retval;
162 }
163
164 /**
165 * The end of line string for this machine.
166 */
167 protected String eol = System.getProperty("line.separator", "\n");
168
169 /**
170 * Used to convert raw characters to their escaped version
171 * when these raw version cannot be used as part of an ASCII
172 * string literal.
173 */
174 protected String add_escapes(String str) {
175 StringBuffer retval = new StringBuffer();
176 char ch;
177 for (int i = 0; i < str.length(); i++) {
178 switch (str.charAt(i))
179 {
180 case 0 :
181 continue;
182 case '\b':
183 retval.append("\\b");
184 continue;
185 case '\t':
186 retval.append("\\t");
187 continue;
188 case '\n':
189 retval.append("\\n");
190 continue;
191 case '\f':
192 retval.append("\\f");
193 continue;
194 case '\r':
195 retval.append("\\r");
196 continue;
197 case '\"':
198 retval.append("\\\"");
199 continue;
200 case '\'':
201 retval.append("\\\'");
202 continue;
203 case '\\':
204 retval.append("\\\\");
205 continue;
206 default:
207 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
208 String s = "0000" + Integer.toString(ch, 16);
209 retval.append("\\u" + s.substring(s.length() - 4, s.length()));
210 } else {
211 retval.append(ch);
212 }
213 continue;
214 }
215 }
216 return retval.toString();
217 }
218
219 }