Some more clean up of array formula support in preparation for patch 48292

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@888577 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/hssf/record/formula/ArrayPtg.java

@@ -19,6 +19,7 @@ package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.constant.ConstantValueParser;
 import org.apache.poi.hssf.record.constant.ErrorConstant;
+import org.apache.poi.ss.util.NumberToTextConverter;
 import org.apache.poi.util.LittleEndianInput;
 import org.apache.poi.util.LittleEndianOutput;
 
@@ -193,7 +194,7 @@ public final class ArrayPtg extends Ptg {
 			return "\"" + (String)o + "\"";
 		}
 		if (o instanceof Double) {
-			return ((Double)o).toString();
+			return NumberToTextConverter.toText(((Double)o).doubleValue());
 		}
 		if (o instanceof Boolean) {
 			return ((Boolean)o).booleanValue() ? "TRUE" : "FALSE";

src/java/org/apache/poi/ss/formula/FormulaParser.java

@@ -21,16 +21,15 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.regex.Pattern;
 
-import org.apache.poi.hssf.record.UnicodeString;
 import org.apache.poi.hssf.record.constant.ErrorConstant;
 import org.apache.poi.hssf.record.formula.*;
 import org.apache.poi.hssf.record.formula.function.FunctionMetadata;
 import org.apache.poi.hssf.record.formula.function.FunctionMetadataRegistry;
 import org.apache.poi.hssf.usermodel.HSSFErrorConstants;
+import org.apache.poi.ss.SpreadsheetVersion;
 import org.apache.poi.ss.util.AreaReference;
 import org.apache.poi.ss.util.CellReference;
 import org.apache.poi.ss.util.CellReference.NameType;
-import org.apache.poi.ss.SpreadsheetVersion;
 
 /**
  * This class parses a formula string into a List of tokens in RPN order.
@@ -1205,7 +1204,7 @@ public final class FormulaParser {
 	private Object parseArrayItem() {
 		SkipWhite();
 		switch(look) {
-			case '"': return new UnicodeString(parseStringLiteral());
+			case '"': return parseStringLiteral();
 			case '#': return ErrorConstant.valueOf(parseErrorLiteral());
 			case 'F': case 'f':
 			case 'T': case 't':

src/testcases/org/apache/poi/hssf/model/TestFormulaParser.java

@@ -17,11 +17,14 @@
 
 package org.apache.poi.hssf.model;
 
+import java.util.Arrays;
+
 import junit.framework.AssertionFailedError;
 import junit.framework.TestCase;
 
 import org.apache.poi.hssf.HSSFTestDataSamples;
 import org.apache.poi.hssf.record.NameRecord;
+import org.apache.poi.hssf.record.UnicodeString;
 import org.apache.poi.hssf.record.constant.ErrorConstant;
 import org.apache.poi.hssf.record.formula.AbstractFunctionPtg;
 import org.apache.poi.hssf.record.formula.AddPtg;
@@ -71,6 +74,8 @@ import org.apache.poi.ss.formula.FormulaParser;
 import org.apache.poi.ss.formula.FormulaType;
 import org.apache.poi.ss.usermodel.BaseTestBugzillaIssues;
 import org.apache.poi.ss.usermodel.Name;
+import org.apache.poi.util.HexRead;
+import org.apache.poi.util.LittleEndianByteArrayInputStream;
 
 /**
  * Test the low level formula parser functionality. High level tests are to
@@ -830,7 +835,7 @@ public final class TestFormulaParser extends TestCase {
 		Ptg[] ptgs;
 		ptgs = parseFormula("mode({1,2,2,#REF!;FALSE,3,3,2})");
 		confirmTokenClasses(ptgs, ArrayPtg.class, FuncVarPtg.class);
-		assertEquals("{1.0,2.0,2.0,#REF!;FALSE,3.0,3.0,2.0}", ptgs[0].toFormulaString());
+		assertEquals("{1,2,2,#REF!;FALSE,3,3,2}", ptgs[0].toFormulaString());
 
 		ArrayPtg aptg = (ArrayPtg) ptgs[0];
 		Object[][] values = aptg.getTokenArrayValues();
@@ -838,6 +843,34 @@ public final class TestFormulaParser extends TestCase {
 		assertEquals(Boolean.FALSE, values[1][0]);
 	}
 
+	public void testParseStringElementInArray() {
+		Ptg[] ptgs;
+		ptgs = parseFormula("MAX({\"5\"},3)");
+		confirmTokenClasses(ptgs, ArrayPtg.class, IntPtg.class, FuncVarPtg.class);
+		Object element = ((ArrayPtg)ptgs[0]).getTokenArrayValues()[0][0];
+		if (element instanceof UnicodeString) {
+			// this would cause ClassCastException below
+			throw new AssertionFailedError("Wrong encoding of array element value");
+		}
+		assertEquals(String.class, element.getClass());
+
+		// make sure the formula encodes OK
+		int encSize = Ptg.getEncodedSize(ptgs);
+		byte[] data = new byte[encSize];
+		Ptg.serializePtgs(ptgs, data, 0);
+		byte[] expData = HexRead.readFromString(
+				"20 00 00 00 00 00 00 00 " // tArray
+				+ "1E 03 00 "      // tInt(3)
+				+ "42 02 07 00 "   // tFuncVar(MAX) 2-arg
+				+ "00 00 00 "      // Array data: 1 col, 1 row
+				+ "02 01 00 00 35" // elem (type=string, len=1, "5")
+		);
+		assertTrue(Arrays.equals(expData, data));
+		int initSize = Ptg.getEncodedSizeWithoutArrayData(ptgs);
+		Ptg[] ptgs2 = Ptg.readTokens(initSize, new LittleEndianByteArrayInputStream(data));
+		confirmTokenClasses(ptgs2, ArrayPtg.class, IntPtg.class, FuncVarPtg.class);
+	}
+
 	public void testRangeOperator() {
 
 		HSSFWorkbook wb = new HSSFWorkbook();

src/testcases/org/apache/poi/hssf/record/formula/TestArrayPtg.java

@@ -106,12 +106,11 @@ public final class TestArrayPtg extends TestCase {
 
 		// The formula has an array with 3 rows and 5 columns
 		String formula = wb.getSheetAt(0).getRow(0).getCell(0).getCellFormula();
-		// TODO - These number literals should not have '.0'. Excel has different number rendering rules
 
-		if (formula.equals("SUM({1.0,6.0,11.0;2.0,7.0,12.0;3.0,8.0,13.0;4.0,9.0,14.0;5.0,10.0,15.0})")) {
+		if (formula.equals("SUM({1,6,11;2,7,12;3,8,13;4,9,14;5,10,15})")) {
 			throw new AssertionFailedError("Identified bug 42564 b");
 		}
-		assertEquals("SUM({1.0,2.0,3.0,4.0,5.0;6.0,7.0,8.0,9.0,10.0;11.0,12.0,13.0,14.0,15.0})", formula);
+		assertEquals("SUM({1,2,3,4,5;6,7,8,9,10;11,12,13,14,15})", formula);
 	}
 
 	public void testToFormulaString() {
@@ -125,7 +124,7 @@ public final class TestArrayPtg extends TestCase {
 			}
 			throw e;
 		}
-		assertEquals("{TRUE,\"ABCD\",\"E\";0.0,FALSE,\"FG\"}", actualFormula);
+		assertEquals("{TRUE,\"ABCD\",\"E\";0,FALSE,\"FG\"}", actualFormula);
 	}
 
 	/**