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) */