Fix from bug #43510 - support named ranges in formulas

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@610016 13f79535-47bb-0310-9956-ffa450edef68

src/documentation/content/xdocs/changes.xml

@@ -36,6 +36,7 @@
 
 		<!-- Don't forget to update status.xml too! -->
         <release version="3.0.2-FINAL" date="2008-??-??">
+            <action dev="POI-DEVELOPERS" type="add">43510 - Add support for named ranges in formulas</action>
             <action dev="POI-DEVELOPERS" type="add">43937 - Add support for hiding and un-hiding sheets, and checking their current hidden status</action>
             <action dev="POI-DEVELOPERS" type="fix">44167 - Fix for non-contiguous named ranges</action>
             <action dev="POI-DEVELOPERS" type="fix">44070 - Fix for shifting comments when shifting rows</action>

src/documentation/content/xdocs/status.xml

@@ -33,6 +33,7 @@
 	<!-- Don't forget to update changes.xml too! -->
     <changes>
         <release version="3.0.2-FINAL" date="2008-??-??">
+            <action dev="POI-DEVELOPERS" type="add">43510 - Add support for named ranges in formulas</action>
             <action dev="POI-DEVELOPERS" type="add">43937 - Add support for hiding and un-hiding sheets, and checking their current hidden status</action>
             <action dev="POI-DEVELOPERS" type="fix">44167 - Fix for non-contiguous named ranges</action>
             <action dev="POI-DEVELOPERS" type="fix">44070 - Fix for shifting comments when shifting rows</action>

src/java/org/apache/poi/hssf/model/FormulaParser.java

@@ -24,6 +24,7 @@ import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.regex.Pattern;
 
 //import PTG's .. since we need everything, import *
 import org.apache.poi.hssf.record.formula.*;
@@ -66,6 +67,12 @@ public class FormulaParser {
      */
     private List functionTokens = new LinkedList();
 
+    /**
+     * Used for spotting if we have a cell reference,
+     *  or a named range
+     */
+    private final static Pattern CELL_REFERENCE_PATTERN = Pattern.compile("(?:('?)[^:\\\\/\\?\\*\\[\\]]+\\1!)?\\$?[A-Za-z]+\\$?[\\d]+");
+        
     private static char TAB = '\t';
     private static char CR = '\n';
     
@@ -306,15 +313,27 @@ public class FormulaParser {
                 tokens.add(new Ref3DPtg(first,externIdx));
             }
         } else {
-            //this can be either a cell ref or a named range !!
+            // This can be either a cell ref or a named range
-            boolean cellRef = true ; //we should probably do it with reg exp??
+        	// Try to spot which it is
+        	boolean cellRef = CELL_REFERENCE_PATTERN.matcher(name).matches();
             boolean boolLit = (name.equals("TRUE") || name.equals("FALSE"));
+            
             if (boolLit) {
                 tokens.add(new BoolPtg(name));
             } else if (cellRef) {
                 tokens.add(new ReferencePtg(name));
             } else {
-                //handle after named range is integrated!!
+            	boolean nameRecordExists = false;
+                for(int i = 0; i < book.getNumNames(); i++) {
+                	// Our formula will by now contain an upper-cased
+                	//  version of any named range names
+                    if(book.getNameRecord(i).getNameText().toUpperCase().equals(name)) {
+                        nameRecordExists = true;
+                    }
+                }
+                if(!nameRecordExists)
+                    Abort("Found reference to named range \"" + name + "\", but that named range wasn't defined!");
+                tokens.add(new NamePtg(name, book));
             }
         }
     }

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

@@ -39,6 +39,8 @@ import org.apache.poi.hssf.record.formula.StringPtg;
 import org.apache.poi.hssf.record.formula.UnaryMinusPtg;
 import org.apache.poi.hssf.record.formula.UnaryPlusPtg;
 import org.apache.poi.hssf.usermodel.HSSFCell;
+import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
+import org.apache.poi.hssf.usermodel.HSSFName;
 import org.apache.poi.hssf.usermodel.HSSFRow;
 import org.apache.poi.hssf.usermodel.HSSFSheet;
 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
@@ -350,6 +352,38 @@ public class TestFormulaParser extends TestCase {
 		assertTrue("ptg0 contains exact value", ((StringPtg)ptg[0]).getValue().equals(value));
 	}
 	
+	public void testWithNamedRange() throws Exception {
+		HSSFWorkbook workbook = new HSSFWorkbook();
+		FormulaParser fp;
+		Ptg[] ptgs;
+
+		HSSFSheet s = workbook.createSheet("Foo");
+		s.createRow(0).createCell((short)0).setCellValue(1.1);
+		s.createRow(1).createCell((short)0).setCellValue(2.3);
+		s.createRow(2).createCell((short)2).setCellValue(3.1);
+
+		HSSFName name = workbook.createName();
+		name.setNameName("testName");
+		name.setReference("A1:A2");
+
+		fp = HSSFFormulaEvaluator.getUnderlyingParser(workbook, "SUM(testName)");
+		fp.parse();
+		ptgs = fp.getRPNPtg();
+		assertTrue("two tokens expected, got "+ptgs.length,ptgs.length == 2);
+		assertEquals(NamePtg.class, ptgs[0].getClass());
+		assertEquals(FuncVarPtg.class, ptgs[1].getClass());
+
+		// Now make it a single cell
+		name.setReference("C3");
+
+		fp = HSSFFormulaEvaluator.getUnderlyingParser(workbook, "SUM(testName)");
+		fp.parse();
+		ptgs = fp.getRPNPtg();
+		assertTrue("two tokens expected, got "+ptgs.length,ptgs.length == 2);
+		assertEquals(NamePtg.class, ptgs[0].getClass());
+		assertEquals(FuncVarPtg.class, ptgs[1].getClass());
+	}
+
 	public void testLookupAndMatchFunctionArgs()
 	{
 		FormulaParser fp = new FormulaParser("lookup(A1, A3:A52, B3:B52)", null);