1/* 2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26/* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */ 27package com.sun.xml.internal.xsom.impl.scd; 28 29import java.util.List; 30 31/** 32 * This exception is thrown when parse errors are encountered. 33 * You can explicitly create objects of this exception type by 34 * calling the method generateParseException in the generated 35 * parser. 36 * 37 * You can modify this class to customize your error reporting 38 * mechanisms so long as you retain the public fields. 39 */ 40public class ParseException extends Exception { 41 42 /** 43 * This constructor is used by the method "generateParseException" 44 * in the generated parser. Calling this constructor generates 45 * a new object of this type with the fields "currentToken", 46 * "expectedTokenSequences", and "tokenImage" set. The boolean 47 * flag "specialConstructor" is also set to true to indicate that 48 * this constructor was used to create this object. 49 * This constructor calls its super class with the empty string 50 * to force the "toString" method of parent class "Throwable" to 51 * print the error message in the form: 52 * ParseException: {@code <result of getMessage>} 53 */ 54 public ParseException(Token currentTokenVal, 55 int[][] expectedTokenSequencesVal, 56 List<String> tokenImageVal 57 ) 58 { 59 super(""); 60 specialConstructor = true; 61 currentToken = currentTokenVal; 62 expectedTokenSequences = expectedTokenSequencesVal; 63 tokenImage = tokenImageVal; 64 } 65 66 /** 67 * The following constructors are for use by you for whatever 68 * purpose you can think of. Constructing the exception in this 69 * manner makes the exception behave in the normal way - i.e., as 70 * documented in the class "Throwable". The fields "errorToken", 71 * "expectedTokenSequences", and "tokenImage" do not contain 72 * relevant information. The JavaCC generated code does not use 73 * these constructors. 74 */ 75 76 public ParseException() { 77 super(); 78 specialConstructor = false; 79 } 80 81 public ParseException(String message) { 82 super(message); 83 specialConstructor = false; 84 } 85 86 /** 87 * This variable determines which constructor was used to create 88 * this object and thereby affects the semantics of the 89 * "getMessage" method (see below). 90 */ 91 protected boolean specialConstructor; 92 93 /** 94 * This is the last token that has been consumed successfully. If 95 * this object has been created due to a parse error, the token 96 * followng this token will (therefore) be the first error token. 97 */ 98 public Token currentToken; 99 100 /** 101 * Each entry in this array is an array of integers. Each array 102 * of integers represents a sequence of tokens (by their ordinal 103 * values) that is expected at this point of the parse. 104 */ 105 public int[][] expectedTokenSequences; 106 107 /** 108 * This is a reference to the "tokenImage" array of the generated 109 * parser within which the parse error occurred. This array is 110 * defined in the generated ...Constants interface. 111 */ 112 public List<String> tokenImage; 113 114 /** 115 * This method has the standard behavior when this object has been 116 * created using the standard constructors. Otherwise, it uses 117 * "currentToken" and "expectedTokenSequences" to generate a parse 118 * error message and returns it. If this object has been created 119 * due to a parse error, and you do not catch it (it gets thrown 120 * from the parser), then this method is called during the printing 121 * of the final stack trace, and hence the correct error message 122 * gets displayed. 123 */ 124 public String getMessage() { 125 if (!specialConstructor) { 126 return super.getMessage(); 127 } 128 StringBuffer expected = new StringBuffer(); 129 int maxSize = 0; 130 for (int i = 0; i < expectedTokenSequences.length; i++) { 131 if (maxSize < expectedTokenSequences[i].length) { 132 maxSize = expectedTokenSequences[i].length; 133 } 134 for (int j = 0; j < expectedTokenSequences[i].length; j++) { 135 expected.append(tokenImage.get(expectedTokenSequences[i][j])).append(" "); 136 } 137 if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) { 138 expected.append("..."); 139 } 140 expected.append(eol).append(" "); 141 } 142 String retval = "Encountered \""; 143 Token tok = currentToken.next; 144 for (int i = 0; i < maxSize; i++) { 145 if (i != 0) retval += " "; 146 if (tok.kind == 0) { 147 retval += tokenImage.get(0); 148 break; 149 } 150 retval += add_escapes(tok.image); 151 tok = tok.next; 152 } 153 retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn; 154 retval += "." + eol; 155 if (expectedTokenSequences.length == 1) { 156 retval += "Was expecting:" + eol + " "; 157 } else { 158 retval += "Was expecting one of:" + eol + " "; 159 } 160 retval += expected.toString(); 161 return retval; 162 } 163 164 /** 165 * The end of line string for this machine. 166 */ 167 protected String eol = System.getProperty("line.separator", "\n"); 168 169 /** 170 * Used to convert raw characters to their escaped version 171 * when these raw version cannot be used as part of an ASCII 172 * string literal. 173 */ 174 protected String add_escapes(String str) { 175 StringBuffer retval = new StringBuffer(); 176 char ch; 177 for (int i = 0; i < str.length(); i++) { 178 switch (str.charAt(i)) 179 { 180 case 0 : 181 continue; 182 case '\b': 183 retval.append("\\b"); 184 continue; 185 case '\t': 186 retval.append("\\t"); 187 continue; 188 case '\n': 189 retval.append("\\n"); 190 continue; 191 case '\f': 192 retval.append("\\f"); 193 continue; 194 case '\r': 195 retval.append("\\r"); 196 continue; 197 case '\"': 198 retval.append("\\\""); 199 continue; 200 case '\'': 201 retval.append("\\\'"); 202 continue; 203 case '\\': 204 retval.append("\\\\"); 205 continue; 206 default: 207 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) { 208 String s = "0000" + Integer.toString(ch, 16); 209 retval.append("\\u" + s.substring(s.length() - 4, s.length())); 210 } else { 211 retval.append(ch); 212 } 213 continue; 214 } 215 } 216 return retval.toString(); 217 } 218 219} 220