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 /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 */
  17 using System;
  18 namespace Lucene.Net.Analysis.Standard
  19 {
  20
  21         [Serializable]
  22         public class TokenMgrError:System.ApplicationException
  23         {
  24                 /// <summary> You can also modify the body of this method to customize your error messages.
  25                 /// For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
  26                 /// of end-users concern, so you can return something like :
  27                 ///
  28                 /// "Internal Error : Please file a bug report .... "
  29                 ///
  30                 /// from this method for such cases in the release version of your parser.
  31                 /// </summary>
  32                 public override System.String Message
  33                 {
  34                         get
  35                         {
  36                                 return base.Message;
  37                         }
  38
  39                 }
  40                 /*
  41                 * Ordinals for various reasons why an Error of this type can be thrown.
  42                 */
  43
  44                 /// <summary> Lexical error occured.</summary>
  45                 internal const int LEXICAL_ERROR = 0;
  46
  47                 /// <summary> An attempt wass made to create a second instance of a static token manager.</summary>
  48                 internal const int STATIC_LEXER_ERROR = 1;
  49
  50                 /// <summary> Tried to change to an invalid lexical state.</summary>
  51                 internal const int INVALID_LEXICAL_STATE = 2;
  52
  53                 /// <summary> Detected (and bailed out of) an infinite loop in the token manager.</summary>
  54                 internal const int LOOP_DETECTED = 3;
  55
  56                 /// <summary> Indicates the reason why the exception is thrown. It will have
  57                 /// one of the above 4 values.
  58                 /// </summary>
  59                 internal int errorCode;
  60
  61                 /// <summary> Replaces unprintable characters by their espaced (or unicode escaped)
  62                 /// equivalents in the given string
  63                 /// </summary>
  64                 protected internal static System.String addEscapes(System.String str)
  65                 {
  66                         System.Text.StringBuilder retval = new System.Text.StringBuilder();
  67                         char ch;
  68                         for (int i = 0; i < str.Length; i++)
  69                         {
  70                                 switch (str[i])
  71                                 {
  72
  73                                         case (char) (0):
  74                                                 continue;
  75
  76                                         case '\b':
  77                                                 retval.Append("\\b");
  78                                                 continue;
  79
  80                                         case '\t':
  81                                                 retval.Append("\\t");
  82                                                 continue;
  83
  84                                         case '\n':
  85                                                 retval.Append("\\n");
  86                                                 continue;
  87
  88                                         case '\f':
  89                                                 retval.Append("\\f");
  90                                                 continue;
  91
  92                                         case '\r':
  93                                                 retval.Append("\\r");
  94                                                 continue;
  95
  96                                         case '\"':
  97                                                 retval.Append("\\\"");
  98                                                 continue;
  99
 100                                         case '\'':
 101                                                 retval.Append("\\\'");
 102                                                 continue;
 103
 104                                         case '\\':
 105                                                 retval.Append("\\\\");
 106                                                 continue;
 107
 108                                         default:
 109                                                 if ((ch = str[i]) < 0x20 || ch > 0x7e)
 110                                                 {
 111                                                         System.String s = "0000" + System.Convert.ToString(ch, 16);
 112                                                         retval.Append("\\u" + s.Substring(s.Length - 4, (s.Length) - (s.Length - 4)));
 113                                                 }
 114                                                 else
 115                                                 {
 116                                                         retval.Append(ch);
 117                                                 }
 118                                                 continue;
 119
 120                                 }
 121                         }
 122                         return retval.ToString();
 123                 }
 124
 125                 /// <summary> Returns a detailed message for the Error when it is thrown by the
 126                 /// token manager to indicate a lexical error.
 127                 /// Parameters :
 128                 /// EOFSeen     : indicates if EOF caused the lexicl error
 129                 /// curLexState : lexical state in which this error occured
 130                 /// errorLine   : line number when the error occured
 131                 /// errorColumn : column number when the error occured
 132                 /// errorAfter  : prefix that was seen before this error occured
 133                 /// curchar     : the offending character
 134                 /// Note: You can customize the lexical error message by modifying this method.
 135                 /// </summary>
 136                 protected internal static System.String LexicalError(bool EOFSeen, int lexState, int errorLine, int errorColumn, System.String errorAfter, char curChar)
 137                 {
 138                         return ("Lexical error at line " + errorLine + ", column " + errorColumn + ".  Encountered: " + (EOFSeen?"<EOF> ":("\"" + addEscapes(System.Convert.ToString(curChar)) + "\"") + " (" + (int) curChar + "), ") + "after : \"" + addEscapes(errorAfter) + "\"");
 139                 }
 140
 141                 /*
 142                 * Constructors of various flavors follow.
 143                 */
 144
 145                 public TokenMgrError()
 146                 {
 147                 }
 148
 149                 public TokenMgrError(System.String message, int reason):base(message)
 150                 {
 151                         errorCode = reason;
 152                 }
 153
 154                 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)
 155                 {
 156                 }
 157         }
 158 }