001/* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 5.0 */
002/* JavaCCOptions: */
003/****************************************************************
004 * Licensed to the Apache Software Foundation (ASF) under one   *
005 * or more contributor license agreements.  See the NOTICE file *
006 * distributed with this work for additional information        *
007 * regarding copyright ownership.  The ASF licenses this file   *
008 * to you under the Apache License, Version 2.0 (the            *
009 * "License"); you may not use this file except in compliance   *
010 * with the License.  You may obtain a copy of the License at   *
011 *                                                              *
012 *   http://www.apache.org/licenses/LICENSE-2.0                 *
013 *                                                              *
014 * Unless required by applicable law or agreed to in writing,   *
015 * software distributed under the License is distributed on an  *
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017 * KIND, either express or implied.  See the License for the    *
018 * specific language governing permissions and limitations      *
019 * under the License.                                           *
020 ****************************************************************/
021package org.apache.james.mime4j.field.address;
022
023/** Token Manager Error. */
024public class TokenMgrError extends Error
025{
026
027  /**
028   * The version identifier for this Serializable class.
029   * Increment only if the <i>serialized</i> form of the
030   * class changes.
031   */
032  private static final long serialVersionUID = 1L;
033
034  /*
035   * Ordinals for various reasons why an Error of this type can be thrown.
036   */
037
038  /**
039   * Lexical error occurred.
040   */
041  static final int LEXICAL_ERROR = 0;
042
043  /**
044   * An attempt was made to create a second instance of a static token manager.
045   */
046  static final int STATIC_LEXER_ERROR = 1;
047
048  /**
049   * Tried to change to an invalid lexical state.
050   */
051  static final int INVALID_LEXICAL_STATE = 2;
052
053  /**
054   * Detected (and bailed out of) an infinite loop in the token manager.
055   */
056  static final int LOOP_DETECTED = 3;
057
058  /**
059   * Indicates the reason why the exception is thrown. It will have
060   * one of the above 4 values.
061   */
062  int errorCode;
063
064  /**
065   * Replaces unprintable characters by their escaped (or unicode escaped)
066   * equivalents in the given string
067   */
068  protected static final String addEscapes(String str) {
069    StringBuffer retval = new StringBuffer();
070    char ch;
071    for (int i = 0; i < str.length(); i++) {
072      switch (str.charAt(i))
073      {
074        case 0 :
075          continue;
076        case '\b':
077          retval.append("\\b");
078          continue;
079        case '\t':
080          retval.append("\\t");
081          continue;
082        case '\n':
083          retval.append("\\n");
084          continue;
085        case '\f':
086          retval.append("\\f");
087          continue;
088        case '\r':
089          retval.append("\\r");
090          continue;
091        case '\"':
092          retval.append("\\\"");
093          continue;
094        case '\'':
095          retval.append("\\\'");
096          continue;
097        case '\\':
098          retval.append("\\\\");
099          continue;
100        default:
101          if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
102            String s = "0000" + Integer.toString(ch, 16);
103            retval.append("\\u" + s.substring(s.length() - 4, s.length()));
104          } else {
105            retval.append(ch);
106          }
107          continue;
108      }
109    }
110    return retval.toString();
111  }
112
113  /**
114   * Returns a detailed message for the Error when it is thrown by the
115   * token manager to indicate a lexical error.
116   * Parameters :
117   *    EOFSeen     : indicates if EOF caused the lexical error
118   *    curLexState : lexical state in which this error occurred
119   *    errorLine   : line number when the error occurred
120   *    errorColumn : column number when the error occurred
121   *    errorAfter  : prefix that was seen before this error occurred
122   *    curchar     : the offending character
123   * Note: You can customize the lexical error message by modifying this method.
124   */
125  protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
126    return("Lexical error at line " +
127          errorLine + ", column " +
128          errorColumn + ".  Encountered: " +
129          (EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") +
130          "after : \"" + addEscapes(errorAfter) + "\"");
131  }
132
133  /**
134   * You can also modify the body of this method to customize your error messages.
135   * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
136   * of end-users concern, so you can return something like :
137   *
138   *     "Internal Error : Please file a bug report .... "
139   *
140   * from this method for such cases in the release version of your parser.
141   */
142  public String getMessage() {
143    return super.getMessage();
144  }
145
146  /*
147   * Constructors of various flavors follow.
148   */
149
150  /** No arg constructor. */
151  public TokenMgrError() {
152  }
153
154  /** Constructor with message and reason. */
155  public TokenMgrError(String message, int reason) {
156    super(message);
157    errorCode = reason;
158  }
159
160  /** Full Constructor. */
161  public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
162    this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
163  }
164}
165/* JavaCC - OriginalChecksum=dba00f059ee889ef89f778e01622bb7c (do not edit this line) */