/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License.  You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
 * Created on May 8, 2005
 *
 */
package org.apache.poi.hssf.record.formula.eval;

import org.apache.poi.hssf.record.formula.BoolPtg;
import org.apache.poi.hssf.record.formula.Ptg;

/**
 * @author Amol S. Deshmukh < amolweb at ya hoo dot com >
 *  
 */
public class BoolEval implements NumericValueEval, StringValueEval {

    private boolean value;
    
    public static final BoolEval FALSE = new BoolEval(false);
    
    public static final BoolEval TRUE = new BoolEval(true);

    public BoolEval(Ptg ptg) {
        this.value = ((BoolPtg) ptg).getValue();
    }

    private BoolEval(boolean value) {
        this.value = value;
    }

    public boolean getBooleanValue() {
        return value;
    }

    public double getNumberValue() {
        return value ? (short) 1 : (short) 0;
    }

    public String getStringValue() {
        return value ? "TRUE" : "FALSE";
    }
}