poi/src/scratchpad/src/org/apache/poi/hssf/record/formula/eval/NumberEval.java

74 lines
2.1 KiB
Java

/*
* 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.IntPtg;
import org.apache.poi.hssf.record.formula.NumberPtg;
import org.apache.poi.hssf.record.formula.Ptg;
/**
* @author Amol S. Deshmukh < amolweb at ya hoo dot com >
*
*/
public class NumberEval implements NumericValueEval, StringValueEval {
public static final NumberEval ZERO = new NumberEval(0);
private double value;
private String stringValue;
public NumberEval(Ptg ptg) {
if (ptg instanceof IntPtg) {
this.value = ((IntPtg) ptg).getValue();
}
else if (ptg instanceof NumberPtg) {
this.value = ((NumberPtg) ptg).getValue();
}
}
public NumberEval(double value) {
this.value = value;
}
public double getNumberValue() {
return value;
}
public String getStringValue() { // TODO: limit to 15 decimal places
if (stringValue == null)
makeString();
return stringValue;
}
protected void makeString() {
if (!Double.isNaN(value)) {
long lvalue = Math.round(value);
if (lvalue == value) {
stringValue = String.valueOf(lvalue);
}
else {
stringValue = String.valueOf(value);
}
}
}
}