001 /**
002 * GRANITE DATA SERVICES
003 * Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 * This file is part of the Granite Data Services Platform.
006 *
007 * Granite Data Services is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * Granite Data Services is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 * General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 * USA, or see <http://www.gnu.org/licenses/>.
021 */
022 /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */
023 /**
024 *
025 * Licensed to the Apache Software Foundation (ASF) under one or more
026 * contributor license agreements. See the NOTICE file distributed with
027 * this work for additional information regarding copyright ownership.
028 * The ASF licenses this file to You under the Apache License, Version 2.0
029 * (the "License"); you may not use this file except in compliance with
030 * the License. You may obtain a copy of the License at
031 *
032 * http://www.apache.org/licenses/LICENSE-2.0
033 *
034 * Unless required by applicable law or agreed to in writing, software
035 * distributed under the License is distributed on an "AS IS" BASIS,
036 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
037 * See the License for the specific language governing permissions and
038 * limitations under the License.
039 */
040
041 package org.granite.gravity.selector;
042
043 /**
044 * This exception is thrown when parse errors are encountered.
045 * You can explicitly create objects of this exception type by
046 * calling the method generateParseException in the generated
047 * parser.
048 *
049 * You can modify this class to customize your error reporting
050 * mechanisms so long as you retain the public fields.
051 */
052 public class ParseException extends Exception {
053
054 private static final long serialVersionUID = 1L;
055
056 /**
057 * This constructor is used by the method "generateParseException"
058 * in the generated parser. Calling this constructor generates
059 * a new object of this type with the fields "currentToken",
060 * "expectedTokenSequences", and "tokenImage" set. The boolean
061 * flag "specialConstructor" is also set to true to indicate that
062 * this constructor was used to create this object.
063 * This constructor calls its super class with the empty string
064 * to force the "toString" method of parent class "Throwable" to
065 * print the error message in the form:
066 * ParseException: <result of getMessage>
067 */
068 public ParseException(Token currentTokenVal,
069 int[][] expectedTokenSequencesVal,
070 String[] tokenImageVal
071 )
072 {
073 super("");
074 specialConstructor = true;
075 currentToken = currentTokenVal;
076 expectedTokenSequences = expectedTokenSequencesVal;
077 tokenImage = tokenImageVal;
078 }
079
080 /**
081 * The following constructors are for use by you for whatever
082 * purpose you can think of. Constructing the exception in this
083 * manner makes the exception behave in the normal way - i.e., as
084 * documented in the class "Throwable". The fields "errorToken",
085 * "expectedTokenSequences", and "tokenImage" do not contain
086 * relevant information. The JavaCC generated code does not use
087 * these constructors.
088 */
089
090 public ParseException() {
091 super();
092 specialConstructor = false;
093 }
094
095 public ParseException(String message) {
096 super(message);
097 specialConstructor = false;
098 }
099
100 /**
101 * This variable determines which constructor was used to create
102 * this object and thereby affects the semantics of the
103 * "getMessage" method (see below).
104 */
105 protected boolean specialConstructor;
106
107 /**
108 * This is the last token that has been consumed successfully. If
109 * this object has been created due to a parse error, the token
110 * followng this token will (therefore) be the first error token.
111 */
112 public Token currentToken;
113
114 /**
115 * Each entry in this array is an array of integers. Each array
116 * of integers represents a sequence of tokens (by their ordinal
117 * values) that is expected at this point of the parse.
118 */
119 public int[][] expectedTokenSequences;
120
121 /**
122 * This is a reference to the "tokenImage" array of the generated
123 * parser within which the parse error occurred. This array is
124 * defined in the generated ...Constants interface.
125 */
126 public String[] tokenImage;
127
128 /**
129 * This method has the standard behavior when this object has been
130 * created using the standard constructors. Otherwise, it uses
131 * "currentToken" and "expectedTokenSequences" to generate a parse
132 * error message and returns it. If this object has been created
133 * due to a parse error, and you do not catch it (it gets thrown
134 * from the parser), then this method is called during the printing
135 * of the final stack trace, and hence the correct error message
136 * gets displayed.
137 */
138 @Override
139 public String getMessage() {
140 if (!specialConstructor) {
141 return super.getMessage();
142 }
143 StringBuffer expected = new StringBuffer();
144 int maxSize = 0;
145 for (int i = 0; i < expectedTokenSequences.length; i++) {
146 if (maxSize < expectedTokenSequences[i].length) {
147 maxSize = expectedTokenSequences[i].length;
148 }
149 for (int j = 0; j < expectedTokenSequences[i].length; j++) {
150 expected.append(tokenImage[expectedTokenSequences[i][j]]).append(" ");
151 }
152 if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
153 expected.append("...");
154 }
155 expected.append(eol).append(" ");
156 }
157 String retval = "Encountered \"";
158 Token tok = currentToken.next;
159 for (int i = 0; i < maxSize; i++) {
160 if (i != 0) retval += " ";
161 if (tok.kind == 0) {
162 retval += tokenImage[0];
163 break;
164 }
165 retval += add_escapes(tok.image);
166 tok = tok.next;
167 }
168 retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
169 retval += "." + eol;
170 if (expectedTokenSequences.length == 1) {
171 retval += "Was expecting:" + eol + " ";
172 } else {
173 retval += "Was expecting one of:" + eol + " ";
174 }
175 retval += expected.toString();
176 return retval;
177 }
178
179 /**
180 * The end of line string for this machine.
181 */
182 protected String eol = System.getProperty("line.separator", "\n");
183
184 /**
185 * Used to convert raw characters to their escaped version
186 * when these raw version cannot be used as part of an ASCII
187 * string literal.
188 */
189 protected String add_escapes(String str) {
190 StringBuffer retval = new StringBuffer();
191 char ch;
192 for (int i = 0; i < str.length(); i++) {
193 switch (str.charAt(i))
194 {
195 case 0 :
196 continue;
197 case '\b':
198 retval.append("\\b");
199 continue;
200 case '\t':
201 retval.append("\\t");
202 continue;
203 case '\n':
204 retval.append("\\n");
205 continue;
206 case '\f':
207 retval.append("\\f");
208 continue;
209 case '\r':
210 retval.append("\\r");
211 continue;
212 case '\"':
213 retval.append("\\\"");
214 continue;
215 case '\'':
216 retval.append("\\\'");
217 continue;
218 case '\\':
219 retval.append("\\\\");
220 continue;
221 default:
222 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
223 String s = "0000" + Integer.toString(ch, 16);
224 retval.append("\\u" + s.substring(s.length() - 4, s.length()));
225 } else {
226 retval.append(ch);
227 }
228 continue;
229 }
230 }
231 return retval.toString();
232 }
233
234 }