/*********************************************************************
*
* Copyright (C) 2003 Andrew Khan
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***************************************************************************/
package jxl.biff.formula;
import jxl.common.Logger;
/**
* Ambiguously defined minus operator, used as a place holder when parsing
* string formulas. At this stage it could be either
* a unary or binary operator - the string parser will deduce which and
* create the appropriate type
*/
class Minus extends StringOperator
{
// The logger
private static Logger logger = Logger.getLogger(StringOperator.class);
/**
* Constructor
*/
public Minus()
{
super();
}
/**
* Abstract method which gets the binary version of this operator
*/
Operator getBinaryOperator()
{
return new Subtract();
}
/**
* Abstract method which gets the unary version of this operator
*/
Operator getUnaryOperator()
{
return new UnaryMinus();
}
/**
* If this formula was on an imported sheet, check that
* cell references to another sheet are warned appropriately
* Does nothing, as operators don't have cell references
*/
void handleImportedCellReferences()
{
}
}
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