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/*
* 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.ss.formula.eval;
import org.apache.poi.ss.formula.ptg.IntPtg;
import org.apache.poi.ss.formula.ptg.NumberPtg;
import org.apache.poi.ss.formula.ptg.Ptg;
import org.apache.poi.ss.util.NumberToTextConverter;
/**
* @author Amol S. Deshmukh < amolweb at ya hoo dot com >
*
*/
public final class NumberEval implements NumericValueEval, StringValueEval {
public static final NumberEval ZERO = new NumberEval(0);
private final double _value;
private String _stringValue;
public NumberEval(Ptg ptg) {
if (ptg == null) {
throw new IllegalArgumentException("ptg must not be null");
}
if (ptg instanceof IntPtg) {
_value = ((IntPtg) ptg).getValue();
} else if (ptg instanceof NumberPtg) {
_value = ((NumberPtg) ptg).getValue();
} else {
throw new IllegalArgumentException("bad argument type (" + ptg.getClass().getName() + ")");
}
}
public NumberEval(double value) {
_value = value;
}
public double getNumberValue() {
return _value;
}
public String getStringValue() {
if (_stringValue == null) {
_stringValue = NumberToTextConverter.toText(_value);
}
return _stringValue;
}
public final String toString() {
return getClass().getName() + " [" +
getStringValue() +
"]";
}
}