log4j/src/testcases/org/apache/poi/hssf/usermodel/FormulaExtractor.java

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   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
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       http://www.apache.org/licenses/LICENSE-2.0

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package org.apache.poi.hssf.usermodel;

import org.apache.poi.hssf.record.CellValueRecordInterface;
import org.apache.poi.hssf.record.aggregates.FormulaRecordAggregate;
import org.apache.poi.ss.formula.ptg.Ptg;

/**
 * Test utility class to get <tt>Ptg</tt> arrays out of formula cells
 * 
 * @author Josh Micich
 */
public final class FormulaExtractor {

	private FormulaExtractor() {
		// no instances of this class
	}
	
	public static Ptg[] getPtgs(HSSFCell cell) {
		CellValueRecordInterface vr = cell.getCellValueRecord();
		if (!(vr instanceof FormulaRecordAggregate)) {
			throw new IllegalArgumentException("Not a formula cell");
		}
		FormulaRecordAggregate fra = (FormulaRecordAggregate) vr;
		return fra.getFormulaRecord().getParsedExpression();
	}
}