001 /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 5.0 */
002 /* JavaCCOptions: */
003 /*
004 * Copyright (c) 2009 The JOMC Project
005 * Copyright (c) 2005 Christian Schulte <cs@jomc.org>
006 * All rights reserved.
007 *
008 * Redistribution and use in source and binary forms, with or without
009 * modification, are permitted provided that the following conditions
010 * are met:
011 *
012 * o Redistributions of source code must retain the above copyright
013 * notice, this list of conditions and the following disclaimer.
014 *
015 * o Redistributions in binary form must reproduce the above copyright
016 * notice, this list of conditions and the following disclaimer in
017 * the documentation and/or other materials provided with the
018 * distribution.
019 *
020 * THIS SOFTWARE IS PROVIDED BY THE JOMC PROJECT AND CONTRIBUTORS "AS IS"
021 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
022 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
023 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE JOMC PROJECT OR
024 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
025 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
026 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
027 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
028 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
029 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
030 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
031 *
032 * $Id: VersionParser.jj 733 2009-10-05 17:22:57Z schulte2005 $
033 *
034 */
035 package org.jomc.util;
036
037 /** Token Manager Error. */
038 public class TokenMgrError extends Error
039 {
040
041 /**
042 * The version identifier for this Serializable class.
043 * Increment only if the <i>serialized</i> form of the
044 * class changes.
045 */
046 private static final long serialVersionUID = 1L;
047
048 /*
049 * Ordinals for various reasons why an Error of this type can be thrown.
050 */
051
052 /**
053 * Lexical error occurred.
054 */
055 static final int LEXICAL_ERROR = 0;
056
057 /**
058 * An attempt was made to create a second instance of a static token manager.
059 */
060 static final int STATIC_LEXER_ERROR = 1;
061
062 /**
063 * Tried to change to an invalid lexical state.
064 */
065 static final int INVALID_LEXICAL_STATE = 2;
066
067 /**
068 * Detected (and bailed out of) an infinite loop in the token manager.
069 */
070 static final int LOOP_DETECTED = 3;
071
072 /**
073 * Indicates the reason why the exception is thrown. It will have
074 * one of the above 4 values.
075 */
076 int errorCode;
077
078 /**
079 * Replaces unprintable characters by their escaped (or unicode escaped)
080 * equivalents in the given string
081 */
082 protected static final String addEscapes(String str) {
083 StringBuffer retval = new StringBuffer();
084 char ch;
085 for (int i = 0; i < str.length(); i++) {
086 switch (str.charAt(i))
087 {
088 case 0 :
089 continue;
090 case '\b':
091 retval.append("\\b");
092 continue;
093 case '\t':
094 retval.append("\\t");
095 continue;
096 case '\n':
097 retval.append("\\n");
098 continue;
099 case '\f':
100 retval.append("\\f");
101 continue;
102 case '\r':
103 retval.append("\\r");
104 continue;
105 case '\"':
106 retval.append("\\\"");
107 continue;
108 case '\'':
109 retval.append("\\\'");
110 continue;
111 case '\\':
112 retval.append("\\\\");
113 continue;
114 default:
115 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
116 String s = "0000" + Integer.toString(ch, 16);
117 retval.append("\\u" + s.substring(s.length() - 4, s.length()));
118 } else {
119 retval.append(ch);
120 }
121 continue;
122 }
123 }
124 return retval.toString();
125 }
126
127 /**
128 * Returns a detailed message for the Error when it is thrown by the
129 * token manager to indicate a lexical error.
130 * Parameters :
131 * EOFSeen : indicates if EOF caused the lexical error
132 * curLexState : lexical state in which this error occurred
133 * errorLine : line number when the error occurred
134 * errorColumn : column number when the error occurred
135 * errorAfter : prefix that was seen before this error occurred
136 * curchar : the offending character
137 * Note: You can customize the lexical error message by modifying this method.
138 */
139 protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
140 return("Lexical error at line " +
141 errorLine + ", column " +
142 errorColumn + ". Encountered: " +
143 (EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") +
144 "after : \"" + addEscapes(errorAfter) + "\"");
145 }
146
147 /**
148 * You can also modify the body of this method to customize your error messages.
149 * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
150 * of end-users concern, so you can return something like :
151 *
152 * "Internal Error : Please file a bug report .... "
153 *
154 * from this method for such cases in the release version of your parser.
155 */
156 public String getMessage() {
157 return super.getMessage();
158 }
159
160 /*
161 * Constructors of various flavors follow.
162 */
163
164 /** No arg constructor. */
165 public TokenMgrError() {
166 }
167
168 /** Constructor with message and reason. */
169 public TokenMgrError(String message, int reason) {
170 super(message);
171 errorCode = reason;
172 }
173
174 /** Full Constructor. */
175 public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
176 this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
177 }
178 }
179 /* JavaCC - OriginalChecksum=98b448fe49b26fa161375304fd2dafe3 (do not edit this line) */