/*********************************************************************
*
* Copyright (C) 2002 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;
import jxl.biff.DoubleHelper;
/**
* A cell reference in a formula
*/
class DoubleValue extends NumberValue implements ParsedThing
{
/**
* The logger
*/
private static Logger logger = Logger.getLogger(DoubleValue.class);
/**
* The value of this double in the formula
*/
private double value;
/**
* Constructor
*/
public DoubleValue()
{
}
/**
* Constructor - invoked when writing an integer value that's out
* of range for a short
*
* @param v the double value
*/
DoubleValue(double v)
{
value = v;
}
/**
* Constructor for a double value when reading from a string
*
* @param s the string representation of this token
*/
public DoubleValue(String s)
{
try
{
value = Double.parseDouble(s);
}
catch (NumberFormatException e)
{
logger.warn(e, e);
value = 0;
}
}
/**
* Reads the ptg data from the array starting at the specified position
*
* @param data the RPN array
* @param pos the current position in the array, excluding the ptg identifier
* @return the number of bytes read
*/
public int read(byte[] data, int pos)
{
value = DoubleHelper.getIEEEDouble(data, pos);
return 8;
}
/**
* Gets the token representation of this item in RPN
*
* @return the bytes applicable to this formula
*/
byte[] getBytes()
{
byte[] data = new byte[9];
data[0] = Token.DOUBLE.getCode();
DoubleHelper.getIEEEBytes(value, data, 1);
return data;
}
/**
* The double value
*
* @return the value
*/
public double getValue()
{
return value;
}
/**
* If this formula was on an imported sheet, check that
* cell references to another sheet are warned appropriately
* Does nothing
*/
void handleImportedCellReferences()
{
}
}
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