001 /*
002 * Cobertura - http://cobertura.sourceforge.net/
003 *
004 * This file was taken from JavaNCSS
005 * http://www.kclee.com/clemens/java/javancss/
006 * Copyright (C) 2000 Chr. Clemens Lee <clemens a.t kclee d.o.t com>
007 *
008 * Cobertura is free software; you can redistribute it and/or modify
009 * it under the terms of the GNU General Public License as published
010 * by the Free Software Foundation; either version 2 of the License,
011 * or (at your option) any later version.
012 *
013 * Cobertura is distributed in the hope that it will be useful, but
014 * WITHOUT ANY WARRANTY; without even the implied warranty of
015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
016 * General Public License for more details.
017 *
018 * You should have received a copy of the GNU General Public License
019 * along with Cobertura; if not, write to the Free Software
020 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
021 * USA
022 */
023
024
025 /*
026 *
027 * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
028 *
029 * WARNING TO COBERTURA DEVELOPERS
030 *
031 * DO NOT MODIFY THIS FILE!
032 *
033 * MODIFY THE FILES UNDER THE JAVANCSS DIRECTORY LOCATED AT THE ROOT OF THE COBERTURA PROJECT.
034 *
035 * FOLLOW THE PROCEDURE FOR MERGING THE LATEST JAVANCSS INTO COBERTURA LOCATED AT
036 * javancss/coberturaREADME.txt
037 *
038 * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
039 */
040 /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 4.1 */
041 /* JavaCCOptions:KEEP_LINE_COL=null */
042 //cobertura - put the import on its own line - otherwise, it messes up the script that changes the package.
043 package net.sourceforge.cobertura.javancss.parser.debug;
044
045 /**
046 * This exception is thrown when parse errors are encountered.
047 * You can explicitly create objects of this exception type by
048 * calling the method generateParseException in the generated
049 * parser.
050 *
051 * You can modify this class to customize your error reporting
052 * mechanisms so long as you retain the public fields.
053 */
054 public class ParseException extends Exception {
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 /** Constructor with message. */
096 public ParseException(String message) {
097 super(message);
098 specialConstructor = false;
099 }
100
101 /**
102 * This variable determines which constructor was used to create
103 * this object and thereby affects the semantics of the
104 * "getMessage" method (see below).
105 */
106 protected boolean specialConstructor;
107
108 /**
109 * This is the last token that has been consumed successfully. If
110 * this object has been created due to a parse error, the token
111 * followng this token will (therefore) be the first error token.
112 */
113 public Token currentToken;
114
115 /**
116 * Each entry in this array is an array of integers. Each array
117 * of integers represents a sequence of tokens (by their ordinal
118 * values) that is expected at this point of the parse.
119 */
120 public int[][] expectedTokenSequences;
121
122 /**
123 * This is a reference to the "tokenImage" array of the generated
124 * parser within which the parse error occurred. This array is
125 * defined in the generated ...Constants interface.
126 */
127 public String[] tokenImage;
128
129 /**
130 * This method has the standard behavior when this object has been
131 * created using the standard constructors. Otherwise, it uses
132 * "currentToken" and "expectedTokenSequences" to generate a parse
133 * error message and returns it. If this object has been created
134 * due to a parse error, and you do not catch it (it gets thrown
135 * from the parser), then this method is called during the printing
136 * of the final stack trace, and hence the correct error message
137 * gets displayed.
138 */
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 += " " + tokenImage[tok.kind];
166 retval += " \"";
167 retval += add_escapes(tok.image);
168 retval += " \"";
169 tok = tok.next;
170 }
171 retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
172 retval += "." + eol;
173 if (expectedTokenSequences.length == 1) {
174 retval += "Was expecting:" + eol + " ";
175 } else {
176 retval += "Was expecting one of:" + eol + " ";
177 }
178 retval += expected.toString();
179 return retval;
180 }
181
182 /**
183 * The end of line string for this machine.
184 */
185 protected String eol = System.getProperty("line.separator", "\n");
186
187 /**
188 * Used to convert raw characters to their escaped version
189 * when these raw version cannot be used as part of an ASCII
190 * string literal.
191 */
192 protected String add_escapes(String str) {
193 StringBuffer retval = new StringBuffer();
194 char ch;
195 for (int i = 0; i < str.length(); i++) {
196 switch (str.charAt(i))
197 {
198 case 0 :
199 continue;
200 case '\b':
201 retval.append("\\b");
202 continue;
203 case '\t':
204 retval.append("\\t");
205 continue;
206 case '\n':
207 retval.append("\\n");
208 continue;
209 case '\f':
210 retval.append("\\f");
211 continue;
212 case '\r':
213 retval.append("\\r");
214 continue;
215 case '\"':
216 retval.append("\\\"");
217 continue;
218 case '\'':
219 retval.append("\\\'");
220 continue;
221 case '\\':
222 retval.append("\\\\");
223 continue;
224 default:
225 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
226 String s = "0000" + Integer.toString(ch, 16);
227 retval.append("\\u" + s.substring(s.length() - 4, s.length()));
228 } else {
229 retval.append(ch);
230 }
231 continue;
232 }
233 }
234 return retval.toString();
235 }
236
237 }
238 /* JavaCC - OriginalChecksum=1dc25ef3bbdc3cc4c510b31013f38e78 (do not edit this line) */