1 /*
2 * Copyright (c) 1999, 2013, 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 5.0 */
27 /* JavaCCOptions:KEEP_LINE_COL=null */
28 package com.sun.tools.example.debug.expr;
29
30 /**
31 * This exception is thrown when parse errors are encountered.
32 * You can explicitly create objects of this exception type by
33 * calling the method generateParseException in the generated
34 * parser.
35 *
36 * You can modify this class to customize your error reporting
37 * mechanisms so long as you retain the public fields.
38 */
39 public class ParseException extends Exception {
40
41 /**
42 * The version identifier for this Serializable class.
43 * Increment only if the <i>serialized</i> form of the
44 * class changes.
45 */
46 private static final long serialVersionUID = 1L;
47
48 /**
49 * This constructor is used by the method "generateParseException"
50 * in the generated parser. Calling this constructor generates
51 * a new object of this type with the fields "currentToken",
52 * "expectedTokenSequences", and "tokenImage" set.
53 */
54 public ParseException(Token currentTokenVal,
55 int[][] expectedTokenSequencesVal,
56 String[] tokenImageVal
57 )
58 {
59 super(initialise(currentTokenVal, expectedTokenSequencesVal, tokenImageVal));
60 currentToken = currentTokenVal;
61 expectedTokenSequences = expectedTokenSequencesVal;
62 tokenImage = tokenImageVal;
63 }
64
65 /**
66 * The following constructors are for use by you for whatever
67 * purpose you can think of. Constructing the exception in this
68 * manner makes the exception behave in the normal way - i.e., as
69 * documented in the class "Throwable". The fields "errorToken",
70 * "expectedTokenSequences", and "tokenImage" do not contain
71 * relevant information. The JavaCC generated code does not use
72 * these constructors.
73 */
74
75 public ParseException() {
76 super();
77 }
78
79 /** Constructor with message. */
80 public ParseException(String message) {
81 super(message);
82 }
83
84
85 /**
86 * This is the last token that has been consumed successfully. If
87 * this object has been created due to a parse error, the token
88 * followng this token will (therefore) be the first error token.
89 */
90 public Token currentToken;
91
92 /**
93 * Each entry in this array is an array of integers. Each array
94 * of integers represents a sequence of tokens (by their ordinal
95 * values) that is expected at this point of the parse.
96 */
97 public int[][] expectedTokenSequences;
98
99 /**
100 * This is a reference to the "tokenImage" array of the generated
101 * parser within which the parse error occurred. This array is
102 * defined in the generated ...Constants interface.
103 */
104 public String[] tokenImage;
105
106 /**
107 * It uses "currentToken" and "expectedTokenSequences" to generate a parse
108 * error message and returns it. If this object has been created
109 * due to a parse error, and you do not catch it (it gets thrown
110 * from the parser) the correct error message
111 * gets displayed.
112 */
113 private static String initialise(Token currentToken,
114 int[][] expectedTokenSequences,
115 String[] tokenImage) {
116 String eol = System.getProperty("line.separator", "\n");
117 StringBuilder expected = new StringBuilder();
118 int maxSize = 0;
119 for (int i = 0; i < expectedTokenSequences.length; i++) {
120 if (maxSize < expectedTokenSequences[i].length) {
121 maxSize = expectedTokenSequences[i].length;
122 }
123 for (int j = 0; j < expectedTokenSequences[i].length; j++) {
124 expected.append(tokenImage[expectedTokenSequences[i][j]]).append(' ');
125 }
126 if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
127 expected.append("...");
128 }
129 expected.append(eol).append(" ");
130 }
131 String retval = "Encountered \"";
132 Token tok = currentToken.next;
133 for (int i = 0; i < maxSize; i++) {
134 if (i != 0) retval += " ";
135 if (tok.kind == 0) {
136 retval += tokenImage[0];
137 break;
138 }
139 retval += " " + tokenImage[tok.kind];
140 retval += " \"";
141 retval += add_escapes(tok.image);
142 retval += " \"";
143 tok = tok.next;
144 }
145 retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
146 retval += "." + eol;
147 if (expectedTokenSequences.length == 1) {
148 retval += "Was expecting:" + eol + " ";
149 } else {
150 retval += "Was expecting one of:" + eol + " ";
151 }
152 retval += expected.toString();
153 return retval;
154 }
155
156 /**
157 * The end of line string for this machine.
158 */
159 protected String eol = System.getProperty("line.separator", "\n");
160
161 /**
162 * Used to convert raw characters to their escaped version
163 * when these raw version cannot be used as part of an ASCII
164 * string literal.
165 */
166 static String add_escapes(String str) {
167 StringBuilder retval = new StringBuilder();
168 char ch;
169 for (int i = 0; i < str.length(); i++) {
170 switch (str.charAt(i))
171 {
172 case 0 :
173 continue;
174 case '\b':
175 retval.append("\\b");
176 continue;
177 case '\t':
178 retval.append("\\t");
179 continue;
180 case '\n':
181 retval.append("\\n");
182 continue;
183 case '\f':
184 retval.append("\\f");
185 continue;
186 case '\r':
187 retval.append("\\r");
188 continue;
189 case '\"':
190 retval.append("\\\"");
191 continue;
192 case '\'':
193 retval.append("\\\'");
194 continue;
195 case '\\':
196 retval.append("\\\\");
197 continue;
198 default:
199 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
200 String s = "0000" + Integer.toString(ch, 16);
201 retval.append("\\u").append(s.substring(s.length() - 4, s.length()));
202 } else {
203 retval.append(ch);
204 }
205 continue;
206 }
207 }
208 return retval.toString();
209 }
210
211 }
212 /* JavaCC - OriginalChecksum=3c9f049ed2bb6ade635c5bf58a386169 (do not edit this line) */