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    1   /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 4.1 */
    2   /* JavaCCOptions: */
    3   package org.apache.lucene.queryParser;
    4   
    5   /** Token Manager Error. */
    6   @SuppressWarnings("serial")
    7   public class TokenMgrError extends Error
    8   {
    9   
   10      /*
   11       * Ordinals for various reasons why an Error of this type can be thrown.
   12       */
   13   
   14      /**
   15       * Lexical error occurred.
   16       */
   17      static final int LEXICAL_ERROR = 0;
   18   
   19      /**
   20       * An attempt was made to create a second instance of a static token manager.
   21       */
   22      static final int STATIC_LEXER_ERROR = 1;
   23   
   24      /**
   25       * Tried to change to an invalid lexical state.
   26       */
   27      static final int INVALID_LEXICAL_STATE = 2;
   28   
   29      /**
   30       * Detected (and bailed out of) an infinite loop in the token manager.
   31       */
   32      static final int LOOP_DETECTED = 3;
   33   
   34      /**
   35       * Indicates the reason why the exception is thrown. It will have
   36       * one of the above 4 values.
   37       */
   38      int errorCode;
   39   
   40      /**
   41       * Replaces unprintable characters by their escaped (or unicode escaped)
   42       * equivalents in the given string
   43       */
   44      protected static final String addEscapes(String str) {
   45         StringBuffer retval = new StringBuffer();
   46         char ch;
   47         for (int i = 0; i < str.length(); i++) {
   48           switch (str.charAt(i))
   49           {
   50              case 0 :
   51                 continue;
   52              case '\b':
   53                 retval.append("\\b");
   54                 continue;
   55              case '\t':
   56                 retval.append("\\t");
   57                 continue;
   58              case '\n':
   59                 retval.append("\\n");
   60                 continue;
   61              case '\f':
   62                 retval.append("\\f");
   63                 continue;
   64              case '\r':
   65                 retval.append("\\r");
   66                 continue;
   67              case '\"':
   68                 retval.append("\\\"");
   69                 continue;
   70              case '\'':
   71                 retval.append("\\\'");
   72                 continue;
   73              case '\\':
   74                 retval.append("\\\\");
   75                 continue;
   76              default:
   77                 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
   78                    String s = "0000" + Integer.toString(ch, 16);
   79                    retval.append("\\u" + s.substring(s.length() - 4, s.length()));
   80                 } else {
   81                    retval.append(ch);
   82                 }
   83                 continue;
   84           }
   85         }
   86         return retval.toString();
   87      }
   88   
   89      /**
   90       * Returns a detailed message for the Error when it is thrown by the
   91       * token manager to indicate a lexical error.
   92       * Parameters :
   93       *    EOFSeen     : indicates if EOF caused the lexical error
   94       *    curLexState : lexical state in which this error occurred
   95       *    errorLine   : line number when the error occurred
   96       *    errorColumn : column number when the error occurred
   97       *    errorAfter  : prefix that was seen before this error occurred
   98       *    curchar     : the offending character
   99       * Note: You can customize the lexical error message by modifying this method.
  100       */
  101      protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
  102         return("Lexical error at line " +
  103              errorLine + ", column " +
  104              errorColumn + ".  Encountered: " +
  105              (EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") +
  106              "after : \"" + addEscapes(errorAfter) + "\"");
  107      }
  108   
  109      /**
  110       * You can also modify the body of this method to customize your error messages.
  111       * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
  112       * of end-users concern, so you can return something like :
  113       *
  114       *     "Internal Error : Please file a bug report .... "
  115       *
  116       * from this method for such cases in the release version of your parser.
  117       */
  118      public String getMessage() {
  119         return super.getMessage();
  120      }
  121   
  122      /*
  123       * Constructors of various flavors follow.
  124       */
  125   
  126      /** No arg constructor. */
  127      public TokenMgrError() {
  128      }
  129   
  130      /** Constructor with message and reason. */
  131      public TokenMgrError(String message, int reason) {
  132         super(message);
  133         errorCode = reason;
  134      }
  135   
  136      /** Full Constructor. */
  137      public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
  138         this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
  139      }
  140   }
  141   /* JavaCC - OriginalChecksum=1c94e13236c7e0121e49427992341ee3 (do not edit this line) */

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