1 /*
   2  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 5.0 */
  27 /* JavaCCOptions: */
  28 package com.sun.tools.example.debug.expr;
  29 
  30 /** Token Manager Error. */
  31 public class TokenMgrError extends Error
  32 {
  33 
  34   /**
  35    * The version identifier for this Serializable class.
  36    * Increment only if the <i>serialized</i> form of the
  37    * class changes.
  38    */
  39   private static final long serialVersionUID = 1L;
  40 
  41   /*
  42    * Ordinals for various reasons why an Error of this type can be thrown.
  43    */
  44 
  45   /**
  46    * Lexical error occurred.
  47    */
  48   static final int LEXICAL_ERROR = 0;
  49 
  50   /**
  51    * An attempt was made to create a second instance of a static token manager.
  52    */
  53   static final int STATIC_LEXER_ERROR = 1;
  54 
  55   /**
  56    * Tried to change to an invalid lexical state.
  57    */
  58   static final int INVALID_LEXICAL_STATE = 2;
  59 
  60   /**
  61    * Detected (and bailed out of) an infinite loop in the token manager.
  62    */
  63   static final int LOOP_DETECTED = 3;
  64 
  65   /**
  66    * Indicates the reason why the exception is thrown. It will have
  67    * one of the above 4 values.
  68    */
  69   int errorCode;
  70 
  71   /**
  72    * Replaces unprintable characters by their escaped (or unicode escaped)
  73    * equivalents in the given string
  74    */
  75   protected static final String addEscapes(String str) {
  76     StringBuilder retval = new StringBuilder();
  77     char ch;
  78     for (int i = 0; i < str.length(); i++) {
  79       switch (str.charAt(i))
  80       {
  81         case 0 :
  82           continue;
  83         case '\b':
  84           retval.append("\\b");
  85           continue;
  86         case '\t':
  87           retval.append("\\t");
  88           continue;
  89         case '\n':
  90           retval.append("\\n");
  91           continue;
  92         case '\f':
  93           retval.append("\\f");
  94           continue;
  95         case '\r':
  96           retval.append("\\r");
  97           continue;
  98         case '\"':
  99           retval.append("\\\"");
 100           continue;
 101         case '\'':
 102           retval.append("\\\'");
 103           continue;
 104         case '\\':
 105           retval.append("\\\\");
 106           continue;
 107         default:
 108           if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
 109             String s = "0000" + Integer.toString(ch, 16);
 110             retval.append("\\u" + s.substring(s.length() - 4, s.length()));
 111           } else {
 112             retval.append(ch);
 113           }
 114           continue;
 115       }
 116     }
 117     return retval.toString();
 118   }
 119 
 120   /**
 121    * Returns a detailed message for the Error when it is thrown by the
 122    * token manager to indicate a lexical error.
 123    * Parameters :
 124    *    EOFSeen     : indicates if EOF caused the lexical error
 125    *    curLexState : lexical state in which this error occurred
 126    *    errorLine   : line number when the error occurred
 127    *    errorColumn : column number when the error occurred
 128    *    errorAfter  : prefix that was seen before this error occurred
 129    *    curchar     : the offending character
 130    * Note: You can customize the lexical error message by modifying this method.
 131    */
 132   protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
 133     return("Lexical error at line " +
 134           errorLine + ", column " +
 135           errorColumn + ".  Encountered: " +
 136           (EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") +
 137           "after : \"" + addEscapes(errorAfter) + "\"");
 138   }
 139 
 140   /**
 141    * You can also modify the body of this method to customize your error messages.
 142    * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
 143    * of end-users concern, so you can return something like :
 144    *
 145    *     "Internal Error : Please file a bug report .... "
 146    *
 147    * from this method for such cases in the release version of your parser.
 148    */
 149   public String getMessage() {
 150     return super.getMessage();
 151   }
 152 
 153   /*
 154    * Constructors of various flavors follow.
 155    */
 156 
 157   /** No arg constructor. */
 158   public TokenMgrError() {
 159   }
 160 
 161   /** Constructor with message and reason. */
 162   public TokenMgrError(String message, int reason) {
 163     super(message);
 164     errorCode = reason;
 165   }
 166 
 167   /** Full Constructor. */
 168   public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
 169     this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
 170   }
 171 }
 172 /* JavaCC - OriginalChecksum=9b5d040f247411cad7f77688386c48e7 (do not edit this line) */