1 /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 5.0 */ 2 /* JavaCCOptions: */ 3 /* 4 * Copyright 2010-2011 The 99 Software Foundation 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 package org.nnsoft.commons.bspi; 19 20 /** Token Manager Error. */ 21 public class TokenMgrError extends Error 22 { 23 24 /** 25 * The version identifier for this Serializable class. 26 * Increment only if the <i>serialized</i> form of the 27 * class changes. 28 */ 29 private static final long serialVersionUID = 1L; 30 31 /* 32 * Ordinals for various reasons why an Error of this type can be thrown. 33 */ 34 35 /** 36 * Lexical error occurred. 37 */ 38 static final int LEXICAL_ERROR = 0; 39 40 /** 41 * An attempt was made to create a second instance of a static token manager. 42 */ 43 static final int STATIC_LEXER_ERROR = 1; 44 45 /** 46 * Tried to change to an invalid lexical state. 47 */ 48 static final int INVALID_LEXICAL_STATE = 2; 49 50 /** 51 * Detected (and bailed out of) an infinite loop in the token manager. 52 */ 53 static final int LOOP_DETECTED = 3; 54 55 /** 56 * Indicates the reason why the exception is thrown. It will have 57 * one of the above 4 values. 58 */ 59 int errorCode; 60 61 /** 62 * Replaces unprintable characters by their escaped (or unicode escaped) 63 * equivalents in the given string 64 */ 65 protected static final String addEscapes(String str) { 66 StringBuffer retval = new StringBuffer(); 67 char ch; 68 for (int i = 0; i < str.length(); i++) { 69 switch (str.charAt(i)) 70 { 71 case 0 : 72 continue; 73 case '\b': 74 retval.append("\\b"); 75 continue; 76 case '\t': 77 retval.append("\\t"); 78 continue; 79 case '\n': 80 retval.append("\\n"); 81 continue; 82 case '\f': 83 retval.append("\\f"); 84 continue; 85 case '\r': 86 retval.append("\\r"); 87 continue; 88 case '\"': 89 retval.append("\\\""); 90 continue; 91 case '\'': 92 retval.append("\\\'"); 93 continue; 94 case '\\': 95 retval.append("\\\\"); 96 continue; 97 default: 98 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) { 99 String s = "0000" + Integer.toString(ch, 16); 100 retval.append("\\u" + s.substring(s.length() - 4, s.length())); 101 } else { 102 retval.append(ch); 103 } 104 continue; 105 } 106 } 107 return retval.toString(); 108 } 109 110 /** 111 * Returns a detailed message for the Error when it is thrown by the 112 * token manager to indicate a lexical error. 113 * Parameters : 114 * EOFSeen : indicates if EOF caused the lexical error 115 * curLexState : lexical state in which this error occurred 116 * errorLine : line number when the error occurred 117 * errorColumn : column number when the error occurred 118 * errorAfter : prefix that was seen before this error occurred 119 * curchar : the offending character 120 * Note: You can customize the lexical error message by modifying this method. 121 */ 122 protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) { 123 return("Lexical error at line " + 124 errorLine + ", column " + 125 errorColumn + ". Encountered: " + 126 (EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") + 127 "after : \"" + addEscapes(errorAfter) + "\""); 128 } 129 130 /** 131 * You can also modify the body of this method to customize your error messages. 132 * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not 133 * of end-users concern, so you can return something like : 134 * 135 * "Internal Error : Please file a bug report .... " 136 * 137 * from this method for such cases in the release version of your parser. 138 */ 139 public String getMessage() { 140 return super.getMessage(); 141 } 142 143 /* 144 * Constructors of various flavors follow. 145 */ 146 147 /** No arg constructor. */ 148 public TokenMgrError() { 149 } 150 151 /** Constructor with message and reason. */ 152 public TokenMgrError(String message, int reason) { 153 super(message); 154 errorCode = reason; 155 } 156 157 /** Full Constructor. */ 158 public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) { 159 this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason); 160 } 161 } 162 /* JavaCC - OriginalChecksum=5515ebf01b6bdd81e790c8bad40ccd1b (do not edit this line) */