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    package net.sourceforge.cobertura.javancss.parser;
043    
044    /**
045     * This exception is thrown when parse errors are encountered.
046     * You can explicitly create objects of this exception type by
047     * calling the method generateParseException in the generated
048     * parser.
049     *
050     * You can modify this class to customize your error reporting
051     * mechanisms so long as you retain the public fields.
052     */
053    public class ParseException extends Exception {
054    
055      /**
056       * This constructor is used by the method "generateParseException"
057       * in the generated parser.  Calling this constructor generates
058       * a new object of this type with the fields "currentToken",
059       * "expectedTokenSequences", and "tokenImage" set.  The boolean
060       * flag "specialConstructor" is also set to true to indicate that
061       * this constructor was used to create this object.
062       * This constructor calls its super class with the empty string
063       * to force the "toString" method of parent class "Throwable" to
064       * print the error message in the form:
065       *     ParseException: <result of getMessage>
066       */
067      public ParseException(Token currentTokenVal,
068                            int[][] expectedTokenSequencesVal,
069                            String[] tokenImageVal
070                           )
071      {
072        super("");
073        specialConstructor = true;
074        currentToken = currentTokenVal;
075        expectedTokenSequences = expectedTokenSequencesVal;
076        tokenImage = tokenImageVal;
077      }
078    
079      /**
080       * The following constructors are for use by you for whatever
081       * purpose you can think of.  Constructing the exception in this
082       * manner makes the exception behave in the normal way - i.e., as
083       * documented in the class "Throwable".  The fields "errorToken",
084       * "expectedTokenSequences", and "tokenImage" do not contain
085       * relevant information.  The JavaCC generated code does not use
086       * these constructors.
087       */
088    
089      public ParseException() {
090        super();
091        specialConstructor = false;
092      }
093    
094      /** Constructor with message. */
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      public String getMessage() {
139        if (!specialConstructor) {
140          return super.getMessage();
141        }
142        StringBuffer expected = new StringBuffer();
143        int maxSize = 0;
144        for (int i = 0; i < expectedTokenSequences.length; i++) {
145          if (maxSize < expectedTokenSequences[i].length) {
146            maxSize = expectedTokenSequences[i].length;
147          }
148          for (int j = 0; j < expectedTokenSequences[i].length; j++) {
149            expected.append(tokenImage[expectedTokenSequences[i][j]]).append(' ');
150          }
151          if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
152            expected.append("...");
153          }
154          expected.append(eol).append("    ");
155        }
156        String retval = "Encountered \"";
157        Token tok = currentToken.next;
158        for (int i = 0; i < maxSize; i++) {
159          if (i != 0) retval += " ";
160          if (tok.kind == 0) {
161            retval += tokenImage[0];
162            break;
163          }
164          retval += " " + tokenImage[tok.kind];
165          retval += " \"";
166          retval += add_escapes(tok.image);
167          retval += " \"";
168          tok = tok.next;
169        }
170        retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
171        retval += "." + eol;
172        if (expectedTokenSequences.length == 1) {
173          retval += "Was expecting:" + eol + "    ";
174        } else {
175          retval += "Was expecting one of:" + eol + "    ";
176        }
177        retval += expected.toString();
178        return retval;
179      }
180    
181      /**
182       * The end of line string for this machine.
183       */
184      protected String eol = System.getProperty("line.separator", "\n");
185    
186      /**
187       * Used to convert raw characters to their escaped version
188       * when these raw version cannot be used as part of an ASCII
189       * string literal.
190       */
191      protected String add_escapes(String str) {
192          StringBuffer retval = new StringBuffer();
193          char ch;
194          for (int i = 0; i < str.length(); i++) {
195            switch (str.charAt(i))
196            {
197               case 0 :
198                  continue;
199               case '\b':
200                  retval.append("\\b");
201                  continue;
202               case '\t':
203                  retval.append("\\t");
204                  continue;
205               case '\n':
206                  retval.append("\\n");
207                  continue;
208               case '\f':
209                  retval.append("\\f");
210                  continue;
211               case '\r':
212                  retval.append("\\r");
213                  continue;
214               case '\"':
215                  retval.append("\\\"");
216                  continue;
217               case '\'':
218                  retval.append("\\\'");
219                  continue;
220               case '\\':
221                  retval.append("\\\\");
222                  continue;
223               default:
224                  if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
225                     String s = "0000" + Integer.toString(ch, 16);
226                     retval.append("\\u" + s.substring(s.length() - 4, s.length()));
227                  } else {
228                     retval.append(ch);
229                  }
230                  continue;
231            }
232          }
233          return retval.toString();
234       }
235    
236    }
237    /* JavaCC - OriginalChecksum=849b618d99607c5b3309cfe8560c9c1d (do not edit this line) */