001/* Generated By:JavaCC: Do not edit this line. ParseException.java Version 5.0 */ 002/* JavaCCOptions:KEEP_LINE_COL=null */ 003/** 004 * Licensed to the Apache Software Foundation (ASF) under one or more 005 * contributor license agreements. See the NOTICE file distributed with 006 * this work for additional information regarding copyright ownership. 007 * The ASF licenses this file to You under the Apache License, Version 2.0 008 * (the "License"); you may not use this file except in compliance with 009 * the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, software 014 * distributed under the License is distributed on an "AS IS" BASIS, 015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 016 * See the License for the specific language governing permissions and 017 * limitations under the License. 018 */ 019 020package org.apache.activemq.selector; 021 022/** 023 * This exception is thrown when parse errors are encountered. 024 * You can explicitly create objects of this exception type by 025 * calling the method generateParseException in the generated 026 * parser. 027 * 028 * You can modify this class to customize your error reporting 029 * mechanisms so long as you retain the public fields. 030 */ 031public class ParseException extends Exception { 032 033 /** 034 * The version identifier for this Serializable class. 035 * Increment only if the <i>serialized</i> form of the 036 * class changes. 037 */ 038 private static final long serialVersionUID = 1L; 039 040 /** 041 * This constructor is used by the method "generateParseException" 042 * in the generated parser. Calling this constructor generates 043 * a new object of this type with the fields "currentToken", 044 * "expectedTokenSequences", and "tokenImage" set. 045 */ 046 public ParseException(Token currentTokenVal, 047 int[][] expectedTokenSequencesVal, 048 String[] tokenImageVal 049 ) 050 { 051 super(initialise(currentTokenVal, expectedTokenSequencesVal, tokenImageVal)); 052 currentToken = currentTokenVal; 053 expectedTokenSequences = expectedTokenSequencesVal; 054 tokenImage = tokenImageVal; 055 } 056 057 /** 058 * The following constructors are for use by you for whatever 059 * purpose you can think of. Constructing the exception in this 060 * manner makes the exception behave in the normal way - i.e., as 061 * documented in the class "Throwable". The fields "errorToken", 062 * "expectedTokenSequences", and "tokenImage" do not contain 063 * relevant information. The JavaCC generated code does not use 064 * these constructors. 065 */ 066 067 public ParseException() { 068 super(); 069 } 070 071 /** Constructor with message. */ 072 public ParseException(String message) { 073 super(message); 074 } 075 076 077 /** 078 * This is the last token that has been consumed successfully. If 079 * this object has been created due to a parse error, the token 080 * followng this token will (therefore) be the first error token. 081 */ 082 public Token currentToken; 083 084 /** 085 * Each entry in this array is an array of integers. Each array 086 * of integers represents a sequence of tokens (by their ordinal 087 * values) that is expected at this point of the parse. 088 */ 089 public int[][] expectedTokenSequences; 090 091 /** 092 * This is a reference to the "tokenImage" array of the generated 093 * parser within which the parse error occurred. This array is 094 * defined in the generated ...Constants interface. 095 */ 096 public String[] tokenImage; 097 098 /** 099 * It uses "currentToken" and "expectedTokenSequences" to generate a parse 100 * error message and returns it. If this object has been created 101 * due to a parse error, and you do not catch it (it gets thrown 102 * from the parser) the correct error message 103 * gets displayed. 104 */ 105 private static String initialise(Token currentToken, 106 int[][] expectedTokenSequences, 107 String[] tokenImage) { 108 String eol = System.getProperty("line.separator", "\n"); 109 StringBuffer expected = new StringBuffer(); 110 int maxSize = 0; 111 for (int i = 0; i < expectedTokenSequences.length; i++) { 112 if (maxSize < expectedTokenSequences[i].length) { 113 maxSize = expectedTokenSequences[i].length; 114 } 115 for (int j = 0; j < expectedTokenSequences[i].length; j++) { 116 expected.append(tokenImage[expectedTokenSequences[i][j]]).append(' '); 117 } 118 if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) { 119 expected.append("..."); 120 } 121 expected.append(eol).append(" "); 122 } 123 String retval = "Encountered \""; 124 Token tok = currentToken.next; 125 for (int i = 0; i < maxSize; i++) { 126 if (i != 0) retval += " "; 127 if (tok.kind == 0) { 128 retval += tokenImage[0]; 129 break; 130 } 131 retval += " " + tokenImage[tok.kind]; 132 retval += " \""; 133 retval += add_escapes(tok.image); 134 retval += " \""; 135 tok = tok.next; 136 } 137 retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn; 138 retval += "." + eol; 139 if (expectedTokenSequences.length == 1) { 140 retval += "Was expecting:" + eol + " "; 141 } else { 142 retval += "Was expecting one of:" + eol + " "; 143 } 144 retval += expected.toString(); 145 return retval; 146 } 147 148 /** 149 * The end of line string for this machine. 150 */ 151 protected String eol = System.getProperty("line.separator", "\n"); 152 153 /** 154 * Used to convert raw characters to their escaped version 155 * when these raw version cannot be used as part of an ASCII 156 * string literal. 157 */ 158 static String add_escapes(String str) { 159 StringBuffer retval = new StringBuffer(); 160 char ch; 161 for (int i = 0; i < str.length(); i++) { 162 switch (str.charAt(i)) 163 { 164 case 0 : 165 continue; 166 case '\b': 167 retval.append("\\b"); 168 continue; 169 case '\t': 170 retval.append("\\t"); 171 continue; 172 case '\n': 173 retval.append("\\n"); 174 continue; 175 case '\f': 176 retval.append("\\f"); 177 continue; 178 case '\r': 179 retval.append("\\r"); 180 continue; 181 case '\"': 182 retval.append("\\\""); 183 continue; 184 case '\'': 185 retval.append("\\\'"); 186 continue; 187 case '\\': 188 retval.append("\\\\"); 189 continue; 190 default: 191 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) { 192 String s = "0000" + Integer.toString(ch, 16); 193 retval.append("\\u" + s.substring(s.length() - 4, s.length())); 194 } else { 195 retval.append(ch); 196 } 197 continue; 198 } 199 } 200 return retval.toString(); 201 } 202 203} 204/* JavaCC - OriginalChecksum=b9214f06b2c752c7be8d5d26aa9e434d (do not edit this line) */