--- /dev/null
+package org.apache.poi.ss.formula.functions;
+
+import org.apache.poi.ss.formula.eval.ErrorEval;
+import org.apache.poi.ss.formula.eval.NumberEval;
+import org.apache.poi.ss.formula.eval.RefListEval;
+import org.apache.poi.ss.formula.eval.ValueEval;
+import org.apache.poi.ss.formula.ptg.NumberPtg;
+
+/**
+ * Returns the number of areas in a reference. An area is a range of contiguous cells or a single cell.
+ *
+ * @author Loopbing (loopbing@gmail.com)
+ */
+public final class Areas implements Function {
+
+ @Override
+ public ValueEval evaluate(ValueEval[] args, int srcRowIndex, int srcColumnIndex) {
+ if (args.length == 0) {
+ return ErrorEval.VALUE_INVALID;
+ }
+ try {
+ ValueEval valueEval = args[0];
+ int result = 1;
+ if (valueEval instanceof RefListEval) {
+ RefListEval refListEval = (RefListEval) valueEval;
+ result = refListEval.getList().size();
+ }
+ NumberEval numberEval = new NumberEval(new NumberPtg(result));
+ return numberEval;
+ } catch (Exception e) {
+ return ErrorEval.VALUE_INVALID;
+ }
+
+ }
+}
--- /dev/null
+package org.apache.poi.ss.formula.functions;
+
+import junit.framework.TestCase;
+import org.apache.poi.hssf.usermodel.HSSFCell;
+import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
+import org.apache.poi.hssf.usermodel.HSSFWorkbook;
+import org.apache.poi.ss.formula.eval.ErrorEval;
+import org.apache.poi.ss.formula.eval.NumberEval;
+import org.apache.poi.ss.usermodel.CellType;
+import org.apache.poi.ss.usermodel.CellValue;
+
+public final class TestAreas extends TestCase {
+
+ public void testAreas() {
+ HSSFWorkbook wb = new HSSFWorkbook();
+ HSSFCell cell = wb.createSheet().createRow(0).createCell(0);
+ HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
+
+ String formulaText = "AREAS(B1)";
+ confirmResult(fe, cell, formulaText,1.0);
+
+ formulaText = "AREAS(B2:D4)";
+ confirmResult(fe, cell, formulaText,1.0);
+
+ formulaText = "AREAS((B2:D4,E5,F6:I9))";
+ confirmResult(fe, cell, formulaText,3.0);
+
+ formulaText = "AREAS((B2:D4,E5,C3,E4))";
+ confirmResult(fe, cell, formulaText,4.0);
+
+ formulaText = "AREAS((I9))";
+ confirmResult(fe, cell, formulaText,1.0);
+ }
+
+ private static void confirmResult(HSSFFormulaEvaluator fe, HSSFCell cell, String formulaText,Double expectedResult) {
+ cell.setCellFormula(formulaText);
+ fe.notifyUpdateCell(cell);
+ CellValue result = fe.evaluate(cell);
+ assertEquals(result.getCellTypeEnum(), CellType.NUMERIC);
+ assertEquals(expectedResult, result.getNumberValue());
+ }
+}