001 /*
002 * Sonar, open source software quality management tool.
003 * Copyright (C) 2008-2011 SonarSource
004 * mailto:contact AT sonarsource DOT com
005 *
006 * Sonar is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * Sonar is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public
017 * License along with Sonar; if not, write to the Free Software
018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02
019 */
020
021 /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 4.1 */
022 /* JavaCCOptions:KEEP_LINE_COL=null */
023 package net.sourceforge.pmd.cpd.cppast;
024
025 /**
026 * This exception is thrown when parse errors are encountered.
027 * You can explicitly create objects of this exception type by
028 * calling the method generateParseException in the generated
029 * parser.
030 *
031 * You can modify this class to customize your error reporting
032 * mechanisms so long as you retain the public fields.
033 */
034 public class ParseException extends RuntimeException {
035
036 /**
037 * This constructor is used by the method "generateParseException"
038 * in the generated parser. Calling this constructor generates
039 * a new object of this type with the fields "currentToken",
040 * "expectedTokenSequences", and "tokenImage" set. The boolean
041 * flag "specialConstructor" is also set to true to indicate that
042 * this constructor was used to create this object.
043 * This constructor calls its super class with the empty string
044 * to force the "toString" method of parent class "Throwable" to
045 * print the error message in the form:
046 * ParseException: <result of getMessage>
047 */
048 public ParseException(Token currentTokenVal,
049 int[][] expectedTokenSequencesVal,
050 String[] tokenImageVal
051 )
052 {
053 super("");
054 specialConstructor = true;
055 currentToken = currentTokenVal;
056 expectedTokenSequences = expectedTokenSequencesVal;
057 tokenImage = tokenImageVal;
058 }
059
060 /**
061 * The following constructors are for use by you for whatever
062 * purpose you can think of. Constructing the exception in this
063 * manner makes the exception behave in the normal way - i.e., as
064 * documented in the class "Throwable". The fields "errorToken",
065 * "expectedTokenSequences", and "tokenImage" do not contain
066 * relevant information. The JavaCC generated code does not use
067 * these constructors.
068 */
069
070 public ParseException() {
071 super();
072 specialConstructor = false;
073 }
074
075 /** Constructor with message. */
076 public ParseException(String message) {
077 super(message);
078 specialConstructor = false;
079 }
080
081 /**
082 * This variable determines which constructor was used to create
083 * this object and thereby affects the semantics of the
084 * "getMessage" method (see below).
085 */
086 protected boolean specialConstructor;
087
088 /**
089 * This is the last token that has been consumed successfully. If
090 * this object has been created due to a parse error, the token
091 * followng this token will (therefore) be the first error token.
092 */
093 public Token currentToken;
094
095 /**
096 * Each entry in this array is an array of integers. Each array
097 * of integers represents a sequence of tokens (by their ordinal
098 * values) that is expected at this point of the parse.
099 */
100 public int[][] expectedTokenSequences;
101
102 /**
103 * This is a reference to the "tokenImage" array of the generated
104 * parser within which the parse error occurred. This array is
105 * defined in the generated ...Constants interface.
106 */
107 public String[] tokenImage;
108
109 /**
110 * This method has the standard behavior when this object has been
111 * created using the standard constructors. Otherwise, it uses
112 * "currentToken" and "expectedTokenSequences" to generate a parse
113 * error message and returns it. If this object has been created
114 * due to a parse error, and you do not catch it (it gets thrown
115 * from the parser), then this method is called during the printing
116 * of the final stack trace, and hence the correct error message
117 * gets displayed.
118 */
119 public String getMessage() {
120 if (!specialConstructor) {
121 return super.getMessage();
122 }
123 StringBuffer expected = new StringBuffer();
124 int maxSize = 0;
125 for (int i = 0; i < expectedTokenSequences.length; i++) {
126 if (maxSize < expectedTokenSequences[i].length) {
127 maxSize = expectedTokenSequences[i].length;
128 }
129 for (int j = 0; j < expectedTokenSequences[i].length; j++) {
130 expected.append(tokenImage[expectedTokenSequences[i][j]]).append(' ');
131 }
132 if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
133 expected.append("...");
134 }
135 expected.append(eol).append(" ");
136 }
137 String retval = "Encountered \"";
138 Token tok = currentToken.next;
139 for (int i = 0; i < maxSize; i++) {
140 if (i != 0) retval += " ";
141 if (tok.kind == 0) {
142 retval += tokenImage[0];
143 break;
144 }
145 retval += " " + tokenImage[tok.kind];
146 retval += " \"";
147 retval += add_escapes(tok.image);
148 retval += " \"";
149 tok = tok.next;
150 }
151 retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
152 retval += "." + eol;
153 if (expectedTokenSequences.length == 1) {
154 retval += "Was expecting:" + eol + " ";
155 } else {
156 retval += "Was expecting one of:" + eol + " ";
157 }
158 retval += expected.toString();
159 return retval;
160 }
161
162 /**
163 * The end of line string for this machine.
164 */
165 protected String eol = System.getProperty("line.separator", "\n");
166
167 /**
168 * Used to convert raw characters to their escaped version
169 * when these raw version cannot be used as part of an ASCII
170 * string literal.
171 */
172 protected String add_escapes(String str) {
173 StringBuffer retval = new StringBuffer();
174 char ch;
175 for (int i = 0; i < str.length(); i++) {
176 switch (str.charAt(i))
177 {
178 case 0 :
179 continue;
180 case '\b':
181 retval.append("\\b");
182 continue;
183 case '\t':
184 retval.append("\\t");
185 continue;
186 case '\n':
187 retval.append("\\n");
188 continue;
189 case '\f':
190 retval.append("\\f");
191 continue;
192 case '\r':
193 retval.append("\\r");
194 continue;
195 case '\"':
196 retval.append("\\\"");
197 continue;
198 case '\'':
199 retval.append("\\\'");
200 continue;
201 case '\\':
202 retval.append("\\\\");
203 continue;
204 default:
205 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
206 String s = "0000" + Integer.toString(ch, 16);
207 retval.append("\\u" + s.substring(s.length() - 4, s.length()));
208 } else {
209 retval.append(ch);
210 }
211 continue;
212 }
213 }
214 return retval.toString();
215 }
216
217 }
218 /* JavaCC - OriginalChecksum=8b42f597f21215eb130252440c369111 (do not edit this line) */