beagled/Lucene.Net/Analysis/Standard/TokenMgrError.cs

   1 /*
   2  * Copyright 2004 The Apache Software Foundation
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 */
  18 using System;
  19
  20 namespace Lucene.Net.Analysis.Standard
  21 {
  22
  23         [Serializable]
  24         public class TokenMgrError:System.ApplicationException
  25         {
  26                 /// <summary> You can also modify the body of this method to customize your error messages.
  27                 /// For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
  28                 /// of end-users concern, so you can return something like :
  29                 ///
  30                 /// "Internal Error : Please file a bug report .... "
  31                 ///
  32                 /// from this method for such cases in the release version of your parser.
  33                 /// </summary>
  34                 public override System.String Message
  35                 {
  36                         get
  37                         {
  38                                 return base.Message;
  39                         }
  40
  41                 }
  42                 /*
  43                 * Ordinals for various reasons why an Error of this type can be thrown.
  44                 */
  45
  46                 /// <summary> Lexical error occured.</summary>
  47                 internal const int LEXICAL_ERROR = 0;
  48
  49                 /// <summary> An attempt wass made to create a second instance of a static token manager.</summary>
  50                 internal const int STATIC_LEXER_ERROR = 1;
  51
  52                 /// <summary> Tried to change to an invalid lexical state.</summary>
  53                 internal const int INVALID_LEXICAL_STATE = 2;
  54
  55                 /// <summary> Detected (and bailed out of) an infinite loop in the token manager.</summary>
  56                 internal const int LOOP_DETECTED = 3;
  57
  58                 /// <summary> Indicates the reason why the exception is thrown. It will have
  59                 /// one of the above 4 values.
  60                 /// </summary>
  61                 internal int errorCode;
  62
  63                 /// <summary> Replaces unprintable characters by their espaced (or unicode escaped)
  64                 /// equivalents in the given string
  65                 /// </summary>
  66                 protected internal static System.String addEscapes(System.String str)
  67                 {
  68                         System.Text.StringBuilder retval = new System.Text.StringBuilder();
  69                         char ch;
  70                         for (int i = 0; i < str.Length; i++)
  71                         {
  72                                 switch (str[i])
  73                                 {
  74
  75                                         case (char) (0):
  76                                                 continue;
  77
  78                                         case '\b':
  79                                                 retval.Append("\\b");
  80                                                 continue;
  81
  82                                         case '\t':
  83                                                 retval.Append("\\t");
  84                                                 continue;
  85
  86                                         case '\n':
  87                                                 retval.Append("\\n");
  88                                                 continue;
  89
  90                                         case '\f':
  91                                                 retval.Append("\\f");
  92                                                 continue;
  93
  94                                         case '\r':
  95                                                 retval.Append("\\r");
  96                                                 continue;
  97
  98                                         case '\"':
  99                                                 retval.Append("\\\"");
 100                                                 continue;
 101
 102                                         case '\'':
 103                                                 retval.Append("\\\'");
 104                                                 continue;
 105
 106                                         case '\\':
 107                                                 retval.Append("\\\\");
 108                                                 continue;
 109
 110                                         default:
 111                                                 if ((ch = str[i]) < 0x20 || ch > 0x7e)
 112                                                 {
 113                                                         System.String s = "0000" + System.Convert.ToString(ch, 16);
 114                                                         retval.Append("\\u" + s.Substring(s.Length - 4, (s.Length) - (s.Length - 4)));
 115                                                 }
 116                                                 else
 117                                                 {
 118                                                         retval.Append(ch);
 119                                                 }
 120                                                 continue;
 121
 122                                 }
 123                         }
 124                         return retval.ToString();
 125                 }
 126
 127                 /// <summary> Returns a detailed message for the Error when it is thrown by the
 128                 /// token manager to indicate a lexical error.
 129                 /// Parameters :
 130                 /// EOFSeen     : indicates if EOF caused the lexicl error
 131                 /// curLexState : lexical state in which this error occured
 132                 /// errorLine   : line number when the error occured
 133                 /// errorColumn : column number when the error occured
 134                 /// errorAfter  : prefix that was seen before this error occured
 135                 /// curchar     : the offending character
 136                 /// Note: You can customize the lexical error message by modifying this method.
 137                 /// </summary>
 138                 protected internal static System.String LexicalError(bool EOFSeen, int lexState, int errorLine, int errorColumn, System.String errorAfter, char curChar)
 139                 {
 140                         return ("Lexical error at line " + errorLine + ", column " + errorColumn + ".  Encountered: " + (EOFSeen?"<EOF> ":("\"" + addEscapes(System.Convert.ToString(curChar)) + "\"") + " (" + (int) curChar + "), ") + "after : \"" + addEscapes(errorAfter) + "\"");
 141                 }
 142
 143                 /*
 144                 * Constructors of various flavors follow.
 145                 */
 146
 147                 public TokenMgrError()
 148                 {
 149                 }
 150
 151                 public TokenMgrError(System.String message, int reason):base(message)
 152                 {
 153                         errorCode = reason;
 154                 }
 155
 156                 public TokenMgrError(bool EOFSeen, int lexState, int errorLine, int errorColumn, System.String errorAfter, char curChar, int reason):this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason)
 157                 {
 158                 }
 159         }
 160 }