001    /*
002     * Copyright (c) 2005 Einar Pehrson <einar@pehrson.nu>.
003     *
004     * This file is part of
005     * CleanSheets - a spreadsheet application for the Java platform.
006     *
007     * CleanSheets is free software; you can redistribute it and/or modify
008     * it under the terms of the GNU General Public License as published by
009     * the Free Software Foundation; either version 2 of the License, or
010     * (at your option) any later version.
011     *
012     * CleanSheets is distributed in the hope that it will be useful,
013     * but WITHOUT ANY WARRANTY; without even the implied warranty of
014     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
015     * GNU General Public License for more details.
016     *
017     * You should have received a copy of the GNU General Public License
018     * along with CleanSheets; if not, write to the Free Software
019     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
020     */
021    package csheets.core.formula.lang;
022    
023    import csheets.core.formula.Expression;
024    
025    /**
026     * An exception that is thrown when a division by zero is evaluated.
027     * @author Einar Pehrson
028     */
029    public class DivisionByZeroException extends Exception {
030    
031            /** The serialVersionUID of the DivisionByZeroException.java */
032            private static final long serialVersionUID = -5387697381170031793L;
033    
034            /**
035             * Creates a new division-by-zero exception.
036             * @param expression the expression that evaluated to zero
037             */
038            public DivisionByZeroException(Expression expression) {
039                    super("Illegal divisor (" + expression + "): division by 0 is undefined");
040            }
041    
042            /**
043             * Returns a string representation of the exception.
044             * @return a string representation of the exception
045             */
046            public String toString() {
047                    return "#DIV/0!";
048            }
049    }