/* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 0.7pre2 */ /* * @(#)template.jj 1.0 00/04/20 * */ /* ====================================================================== The Bodington System Software License, Version 1.0 Copyright (c) 2001 The University of Leeds. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. 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For more information on the Bodington Open Source Project, please see http://bodington.org/ ====================================================================== */ package org.bodington.servlet.template; public class TokenMgrError extends Error { /* * Ordinals for various reasons why an Error of this type can be thrown. */ /** * Lexical error occured. */ static final int LEXICAL_ERROR = 0; /** * An attempt wass made to create a second instance of a static token manager. */ static final int STATIC_LEXER_ERROR = 1; /** * Tried to change to an invalid lexical state. */ static final int INVALID_LEXICAL_STATE = 2; /** * Detected (and bailed out of) an infinite loop in the token manager. */ static final int LOOP_DETECTED = 3; /** * Indicates the reason why the exception is thrown. It will have * one of the above 4 values. */ int errorCode; /** * Replaces unprintable characters by their espaced (or unicode escaped) * equivalents in the given string */ protected static final String addEscapes(String str) { StringBuffer retval = new StringBuffer(); char ch; for (int i = 0; i < str.length(); i++) { switch (str.charAt(i)) { case 0 : continue; case '\b': retval.append("\\b"); continue; case '\t': retval.append("\\t"); continue; case '\n': retval.append("\\n"); continue; case '\f': retval.append("\\f"); continue; case '\r': retval.append("\\r"); continue; case '\"': retval.append("\\\""); continue; case '\'': retval.append("\\\'"); continue; case '\\': retval.append("\\\\"); continue; default: if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) { String s = "0000" + Integer.toString(ch, 16); retval.append("\\u" + s.substring(s.length() - 4, s.length())); } else { retval.append(ch); } continue; } } return retval.toString(); } /** * Returns a detailed message for the Error when it is thrown by the * token manager to indicate a lexical error. * Parameters : * EOFSeen : indicates if EOF caused the lexicl error * curLexState : lexical state in which this error occured * errorLine : line number when the error occured * errorColumn : column number when the error occured * errorAfter : prefix that was seen before this error occured * curchar : the offending character * Note: You can customize the lexical error message by modifying this method. */ private static final String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) { return("Lexical error at line " + errorLine + ", column " + errorColumn + ". Encountered: " + (EOFSeen ? " " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") + "after : \"" + addEscapes(errorAfter) + "\""); } /** * You can also modify the body of this method to customize your error messages. * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not * of end-users concern, so you can return something like : * * "Internal Error : Please file a bug report .... " * * from this method for such cases in the release version of your parser. */ public String getMessage() { return super.getMessage(); } /* * Constructors of various flavors follow. */ public TokenMgrError() { } public TokenMgrError(String message, int reason) { super(message); errorCode = reason; } public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) { this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason); } }