1 /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 5.0 */ 2 /* JavaCCOptions:KEEP_LINE_COL=null */ 3 /* 4 * Copyright (C) Christian Schulte, 2005-206 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * o Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 14 * o Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 20 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 21 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 22 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $JOMC: VersionParser.jj 3862 2011-10-12 12:37:40Z schulte2005 $ 31 * 32 */ 33 package org.jomc.util; 34 35 /** 36 * This exception is thrown when parse errors are encountered. 37 * You can explicitly create objects of this exception type by 38 * calling the method generateParseException in the generated 39 * parser. 40 * 41 * You can modify this class to customize your error reporting 42 * mechanisms so long as you retain the public fields. 43 */ 44 public class ParseException extends Exception { 45 46 /** 47 * The version identifier for this Serializable class. 48 * Increment only if the <i>serialized</i> form of the 49 * class changes. 50 */ 51 private static final long serialVersionUID = 1L; 52 53 /** 54 * This constructor is used by the method "generateParseException" 55 * in the generated parser. Calling this constructor generates 56 * a new object of this type with the fields "currentToken", 57 * "expectedTokenSequences", and "tokenImage" set. 58 */ 59 public ParseException(Token currentTokenVal, 60 int[][] expectedTokenSequencesVal, 61 String[] tokenImageVal 62 ) 63 { 64 super(initialise(currentTokenVal, expectedTokenSequencesVal, tokenImageVal)); 65 currentToken = currentTokenVal; 66 expectedTokenSequences = expectedTokenSequencesVal; 67 tokenImage = tokenImageVal; 68 } 69 70 /** 71 * The following constructors are for use by you for whatever 72 * purpose you can think of. Constructing the exception in this 73 * manner makes the exception behave in the normal way - i.e., as 74 * documented in the class "Throwable". The fields "errorToken", 75 * "expectedTokenSequences", and "tokenImage" do not contain 76 * relevant information. The JavaCC generated code does not use 77 * these constructors. 78 */ 79 80 public ParseException() { 81 super(); 82 } 83 84 /** Constructor with message. */ 85 public ParseException(String message) { 86 super(message); 87 } 88 89 90 /** 91 * This is the last token that has been consumed successfully. If 92 * this object has been created due to a parse error, the token 93 * followng this token will (therefore) be the first error token. 94 */ 95 public Token currentToken; 96 97 /** 98 * Each entry in this array is an array of integers. Each array 99 * of integers represents a sequence of tokens (by their ordinal 100 * values) that is expected at this point of the parse. 101 */ 102 public int[][] expectedTokenSequences; 103 104 /** 105 * This is a reference to the "tokenImage" array of the generated 106 * parser within which the parse error occurred. This array is 107 * defined in the generated ...Constants interface. 108 */ 109 public String[] tokenImage; 110 111 /** 112 * It uses "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) the correct error message 116 * gets displayed. 117 */ 118 private static String initialise(Token currentToken, 119 int[][] expectedTokenSequences, 120 String[] tokenImage) { 121 String eol = System.getProperty("line.separator", "\n"); 122 StringBuffer expected = new StringBuffer(); 123 int maxSize = 0; 124 for (int i = 0; i < expectedTokenSequences.length; i++) { 125 if (maxSize < expectedTokenSequences[i].length) { 126 maxSize = expectedTokenSequences[i].length; 127 } 128 for (int j = 0; j < expectedTokenSequences[i].length; j++) { 129 expected.append(tokenImage[expectedTokenSequences[i][j]]).append(' '); 130 } 131 if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) { 132 expected.append("..."); 133 } 134 expected.append(eol).append(" "); 135 } 136 String retval = "Encountered \""; 137 Token tok = currentToken.next; 138 for (int i = 0; i < maxSize; i++) { 139 if (i != 0) retval += " "; 140 if (tok.kind == 0) { 141 retval += tokenImage[0]; 142 break; 143 } 144 retval += " " + tokenImage[tok.kind]; 145 retval += " \""; 146 retval += add_escapes(tok.image); 147 retval += " \""; 148 tok = tok.next; 149 } 150 retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn; 151 retval += "." + eol; 152 if (expectedTokenSequences.length == 1) { 153 retval += "Was expecting:" + eol + " "; 154 } else { 155 retval += "Was expecting one of:" + eol + " "; 156 } 157 retval += expected.toString(); 158 return retval; 159 } 160 161 /** 162 * The end of line string for this machine. 163 */ 164 protected String eol = System.getProperty("line.separator", "\n"); 165 166 /** 167 * Used to convert raw characters to their escaped version 168 * when these raw version cannot be used as part of an ASCII 169 * string literal. 170 */ 171 static String add_escapes(String str) { 172 StringBuffer retval = new StringBuffer(); 173 char ch; 174 for (int i = 0; i < str.length(); i++) { 175 switch (str.charAt(i)) 176 { 177 case 0 : 178 continue; 179 case '\b': 180 retval.append("\\b"); 181 continue; 182 case '\t': 183 retval.append("\\t"); 184 continue; 185 case '\n': 186 retval.append("\\n"); 187 continue; 188 case '\f': 189 retval.append("\\f"); 190 continue; 191 case '\r': 192 retval.append("\\r"); 193 continue; 194 case '\"': 195 retval.append("\\\""); 196 continue; 197 case '\'': 198 retval.append("\\\'"); 199 continue; 200 case '\\': 201 retval.append("\\\\"); 202 continue; 203 default: 204 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) { 205 String s = "0000" + Integer.toString(ch, 16); 206 retval.append("\\u" + s.substring(s.length() - 4, s.length())); 207 } else { 208 retval.append(ch); 209 } 210 continue; 211 } 212 } 213 return retval.toString(); 214 } 215 216 } 217 /* JavaCC - OriginalChecksum=ccc28d7041bf8d83968f23647b1ce0b1 (do not edit this line) */