Converted Ptgs to use LittleEndianOutput

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@707486 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/hssf/record/LinkedDataFormulaField.java

@@ -51,7 +51,7 @@ public final class LinkedDataFormulaField {
                     .append( "=" )
                     .append(ptg.toString() )
                     .append( "\n" )
-                    .append(ptg.toDebugString() )
+                    .append(ptg.toString())
                     .append( "\n" );
         }
     }

src/java/org/apache/poi/hssf/record/TextObjectRecord.java

@@ -25,6 +25,8 @@ import org.apache.poi.util.BitField;
 import org.apache.poi.util.BitFieldFactory;
 import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianByteArrayOutputStream;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * The TXO record (0x01B6) is used to define the properties of a text box. It is
@@ -190,36 +192,31 @@ public final class TextObjectRecord extends Record {
 
 	private int serializeTXORecord(int offset, byte[] data) {
 		int dataSize = getDataSize();
+		int recSize = dataSize+4;
+		LittleEndianOutput out = new LittleEndianByteArrayOutputStream(data, offset, recSize);
 		
-		LittleEndian.putUShort(data, 0 + offset, TextObjectRecord.sid);
+		out.writeShort(TextObjectRecord.sid);
-		LittleEndian.putUShort(data, 2 + offset, dataSize);
+		out.writeShort(dataSize);
 		
-		
+		out.writeShort(field_1_options);
-		LittleEndian.putUShort(data, 4 + offset, field_1_options);
+		out.writeShort(field_2_textOrientation);
-		LittleEndian.putUShort(data, 6 + offset, field_2_textOrientation);
+		out.writeShort(field_3_reserved4);
-		LittleEndian.putUShort(data, 8 + offset, field_3_reserved4);
+		out.writeShort(field_4_reserved5);
-		LittleEndian.putUShort(data, 10 + offset, field_4_reserved5);
+		out.writeShort(field_5_reserved6);
-		LittleEndian.putUShort(data, 12 + offset, field_5_reserved6);
+		out.writeShort(_text.length());
-		LittleEndian.putUShort(data, 14 + offset, _text.length());
+		out.writeShort(getFormattingDataLength());
-		LittleEndian.putUShort(data, 16 + offset, getFormattingDataLength());
+		out.writeInt(field_8_reserved7);
-		LittleEndian.putInt(data, 18 + offset, field_8_reserved7);
 		
 		if (_linkRefPtg != null) {
-			int pos = offset+22;
 			int formulaSize = _linkRefPtg.getSize();
-			LittleEndian.putUShort(data, pos, formulaSize);
+			out.writeShort(formulaSize);
-			pos += LittleEndian.SHORT_SIZE;
+			out.writeInt(_unknownPreFormulaInt);
-			LittleEndian.putInt(data, pos, _unknownPreFormulaInt);
+			_linkRefPtg.write(out);
-			pos += LittleEndian.INT_SIZE;
-			_linkRefPtg.writeBytes(data, pos);
-			pos += formulaSize;
 			if (_unknownPostFormulaByte != null) {
-				LittleEndian.putByte(data, pos, _unknownPostFormulaByte.byteValue());
+				out.writeByte(_unknownPostFormulaByte.byteValue());
-				pos += LittleEndian.BYTE_SIZE;
 			}
 		}
-		
+		return recSize;
-		return 4 + dataSize;
 	}
 
 	private int serializeTrailingRecords(int offset, byte[] data) {

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

@@ -98,7 +98,6 @@ public abstract class AbstractFunctionPtg extends OperationPtg {
         buf.append(")");
     }
 
-    public abstract void writeBytes(byte[] array, int offset);
     public abstract int getSize();
 
 

src/java/org/apache/poi/hssf/record/formula/Area2DPtgBase.java

@@ -18,7 +18,7 @@
 package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * Common superclass of 2-D area refs
@@ -29,24 +29,30 @@ public abstract class Area2DPtgBase extends AreaPtgBase {
 	protected Area2DPtgBase(int firstRow, int lastRow, int firstColumn, int lastColumn, boolean firstRowRelative, boolean lastRowRelative, boolean firstColRelative, boolean lastColRelative) {
 		super(firstRow, lastRow, firstColumn, lastColumn, firstRowRelative, lastRowRelative, firstColRelative, lastColRelative);
 	}
+
 	protected Area2DPtgBase(RecordInputStream in) {
 		readCoordinates(in);
 	}
+
 	protected abstract byte getSid();
 
-	public final void writeBytes(byte [] array, int offset) {
+	public final void write(LittleEndianOutput out) {
-		LittleEndian.putByte(array, offset+0, getSid() + getPtgClass());
+		out.writeByte(getSid() + getPtgClass());
-		writeCoordinates(array, offset+1);       
+		writeCoordinates(out);
 	}
+
 	public Area2DPtgBase(String arearef) {
 		super(arearef);
 	}
+
 	public final int getSize() {
 		return SIZE;
 	}
+
 	public final String toFormulaString() {
 		return formatReferenceAsString();
 	}
+
 	public final String toString() {
 		StringBuffer sb = new StringBuffer();
 		sb.append(getClass().getName());

src/java/org/apache/poi/hssf/record/formula/Area3DPtg.java

@@ -21,7 +21,7 @@ import org.apache.poi.hssf.record.RecordInputStream;
 import org.apache.poi.ss.formula.ExternSheetReferenceToken;
 import org.apache.poi.ss.formula.FormulaRenderingWorkbook;
 import org.apache.poi.ss.formula.WorkbookDependentFormula;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * Title:        Area 3D Ptg - 3D reference (Sheet + Area)<P>
@@ -67,10 +67,10 @@ public final class Area3DPtg extends AreaPtgBase implements WorkbookDependentFor
 		return sb.toString();
 	}
 
-	public void writeBytes(byte[] array, int offset) {
+	public void write(LittleEndianOutput out) {
-		LittleEndian.putByte(array, offset + 0, sid + getPtgClass());
+		out.writeByte(sid + getPtgClass());
-		LittleEndian.putUShort(array, 1 + offset, field_1_index_extern_sheet);
+		out.writeShort(field_1_index_extern_sheet);
-		writeCoordinates(array, offset+3);
+		writeCoordinates(out);
 	}
 
 	public int getSize() {

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

@@ -19,7 +19,7 @@ package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
 import org.apache.poi.hssf.usermodel.HSSFErrorConstants;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * AreaErr - handles deleted cell area references.
@@ -42,10 +42,10 @@ public final class AreaErrPtg extends OperandPtg {
 		unused2 = in.readInt();
 	}
 
-	public void writeBytes(byte[] array, int offset) {
+	public void write(LittleEndianOutput out) {
-		LittleEndian.putByte(array, offset + 0, sid + getPtgClass());
+		out.writeByte(sid + getPtgClass());
-		LittleEndian.putInt(array, offset + 1, unused1);
+		out.writeInt(unused1);
-		LittleEndian.putInt(array, offset + 5, unused2);
+		out.writeInt(unused2);
 	}
 
 	public String toFormulaString() {

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

@@ -22,7 +22,7 @@ import org.apache.poi.hssf.util.AreaReference;
 import org.apache.poi.hssf.util.CellReference;
 import org.apache.poi.util.BitField;
 import org.apache.poi.util.BitFieldFactory;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * Specifies a rectangular area of cells A1:A4 for instance.
@@ -119,11 +119,11 @@ public abstract class AreaPtgBase extends OperandPtg implements AreaI {
 		field_3_first_column = in.readUShort();
 		field_4_last_column = in.readUShort();
 	}
-	protected final void writeCoordinates(byte[] array, int offset) {
+	protected final void writeCoordinates(LittleEndianOutput out) {
-		LittleEndian.putUShort(array, offset + 0, field_1_first_row);
+		out.writeShort(field_1_first_row);
-		LittleEndian.putUShort(array, offset + 2, field_2_last_row);
+		out.writeShort(field_2_last_row);
-		LittleEndian.putUShort(array, offset + 4, field_3_first_column);
+		out.writeShort(field_3_first_column);
-		LittleEndian.putUShort(array, offset + 6, field_4_last_column);        
+		out.writeShort(field_4_last_column);
 	}
 
 	/**

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

@@ -22,6 +22,7 @@ import org.apache.poi.hssf.record.UnicodeString;
 import org.apache.poi.hssf.record.constant.ConstantValueParser;
 import org.apache.poi.hssf.record.constant.ErrorConstant;
 import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * ArrayPtg - handles arrays
@@ -153,10 +154,9 @@ public final class ArrayPtg extends Ptg {
 		return rowIx * token_1_columns + colIx;
 	}
 
-	public void writeBytes(byte[] data, int offset) {
+	public void write(LittleEndianOutput out) {
-		
+		out.writeByte(sid + getPtgClass());
-		LittleEndian.putByte(data, offset + 0, sid + getPtgClass());
+		out.write(field_1_reserved);
-		System.arraycopy(field_1_reserved, 0, data, offset+1, RESERVED_FIELD_LEN);
 	}
 
 	public int writeTokenValueBytes(byte[] data, int offset) {

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

@@ -21,6 +21,7 @@ import org.apache.poi.hssf.record.RecordInputStream;
 import org.apache.poi.util.BitField;
 import org.apache.poi.util.BitFieldFactory;
 import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * "Special Attributes"
@@ -213,19 +214,16 @@ public final class AttrPtg extends ControlPtg {
         return sb.toString();
     }
 
-    public void writeBytes(byte [] array, int offset)
+    public void write(LittleEndianOutput out) {
-    {
+        out.writeByte(sid + getPtgClass());
-        LittleEndian.putByte(array, offset+0, sid);
+        out.writeByte(field_1_options);
-        LittleEndian.putByte(array, offset+1, field_1_options);
+        out.writeShort(field_2_data);
-        LittleEndian.putShort(array,offset+2, field_2_data);
         int[] jt = _jumpTable;
         if (jt != null) {
-            int joff = offset+4;
             for (int i = 0; i < jt.length; i++) {
-                LittleEndian.putUShort(array, joff, jt[i]);
+                out.writeShort(jt[i]);
-                joff+=2;
             }
-            LittleEndian.putUShort(array, joff, _chooseFuncOffset);
+            out.writeShort(_chooseFuncOffset);
         }
     }
 

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

@@ -18,17 +18,18 @@
 package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Boolean (boolean)
+ * Boolean (boolean) Stores a (java) boolean value in a formula.
- * Stores a (java) boolean value in a formula.
+ * 
  * @author Paul Krause (pkrause at soundbite dot com)
  * @author Andrew C. Oliver (acoliver at apache dot org)
  * @author Jason Height (jheight at chariot dot net dot au)
  */
 public final class BoolPtg extends ScalarConstantPtg {
 	public final static int SIZE = 2;
-    public final static byte sid  = 0x1d;
+	public final static byte sid = 0x1D;
 	private final boolean _value;
 
 	public BoolPtg(RecordInputStream in) {
@@ -43,9 +44,9 @@ public final class BoolPtg extends ScalarConstantPtg {
 		return _value;
 	}
 
-    public void writeBytes(byte [] array, int offset) {
+	public void write(LittleEndianOutput out) {
-        array[ offset + 0 ] = sid;
+		out.writeByte(sid + getPtgClass());
-        array[ offset + 1 ] = (byte) (_value ? 1 : 0);
+		out.writeByte(_value ? 1 : 0);
 	}
 
 	public int getSize() {

src/java/org/apache/poi/hssf/record/formula/DeletedArea3DPtg.java

@@ -19,9 +19,9 @@ package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
 import org.apache.poi.hssf.usermodel.HSSFErrorConstants;
-import org.apache.poi.ss.formula.WorkbookDependentFormula;
 import org.apache.poi.ss.formula.FormulaRenderingWorkbook;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.ss.formula.WorkbookDependentFormula;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * Title:        Deleted Area 3D Ptg - 3D referecnce (Sheet + Area)<P>
@@ -60,10 +60,10 @@ public final class DeletedArea3DPtg extends OperandPtg implements WorkbookDepend
 	public int getSize() {
 		return 11;
 	}
-	public void writeBytes(byte[] data, int offset) {
+	public void write(LittleEndianOutput out) {
-		LittleEndian.putByte(data, 0 + offset, sid + getPtgClass());
+		out.writeByte(sid + getPtgClass());
-		LittleEndian.putUShort(data, 1 + offset, field_1_index_extern_sheet);
+		out.writeShort(field_1_index_extern_sheet);
-		LittleEndian.putInt(data, 3 + offset, unused1);
+		out.writeInt(unused1);
-		LittleEndian.putInt(data, 7 + offset, unused2);
+		out.writeInt(unused2);
 	}
 }

src/java/org/apache/poi/hssf/record/formula/DeletedRef3DPtg.java

@@ -20,9 +20,9 @@ package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
 import org.apache.poi.hssf.usermodel.HSSFErrorConstants;
-import org.apache.poi.ss.formula.WorkbookDependentFormula;
 import org.apache.poi.ss.formula.FormulaRenderingWorkbook;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.ss.formula.WorkbookDependentFormula;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * Title:        Deleted Reference 3D Ptg <P>
@@ -60,9 +60,9 @@ public final class DeletedRef3DPtg extends OperandPtg implements WorkbookDepende
 	public int getSize() {
 		return 7;
 	}
-	public void writeBytes(byte[] data, int offset) {
+	public void write(LittleEndianOutput out) {
-		LittleEndian.putByte(data, 0 + offset, sid + getPtgClass());
+		out.writeByte(sid + getPtgClass());
-		LittleEndian.putUShort(data, 1 + offset, field_1_index_extern_sheet);
+		out.writeShort(field_1_index_extern_sheet);
-		LittleEndian.putInt(data, 3 + offset, unused1);
+		out.writeInt(unused1);
 	}
 }

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

@@ -19,6 +19,7 @@ package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
 import org.apache.poi.hssf.usermodel.HSSFErrorConstants;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * @author Daniel Noll (daniel at nuix dot com dot au)
@@ -61,10 +62,9 @@ public final class ErrPtg extends ScalarConstantPtg {
         return valueOf(in.readByte());
     }
 
-    public void writeBytes(byte [] array, int offset)
+    public void write(LittleEndianOutput out) {
-    {
+        out.writeByte(sid + getPtgClass());
-        array[offset] = (byte) (sid + getPtgClass());
+        out.writeByte(field_1_error_code);
-        array[offset + 1] = (byte)field_1_error_code;
     }
 
     public String toFormulaString() {

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

@@ -19,7 +19,7 @@ package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordFormatException;
 import org.apache.poi.hssf.record.RecordInputStream;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  *
@@ -39,11 +39,10 @@ public final class ExpPtg extends ControlPtg {
       field_2_first_col = in.readShort();
     }
 
-    public void writeBytes(byte [] array, int offset)
+    public void write(LittleEndianOutput out) {
-    {
+        out.writeByte(sid + getPtgClass());
-      array[offset+0]= (byte) (sid);
+        out.writeShort(field_1_first_row);
-      LittleEndian.putShort(array,offset+1,field_1_first_row);
+        out.writeShort(field_2_first_col);
-      LittleEndian.putShort(array,offset+3,field_2_first_col);
     }
 
     public int getSize()

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

@@ -16,10 +16,10 @@
 ==================================================================== */
 
 package org.apache.poi.hssf.record.formula;
-import org.apache.poi.util.LittleEndian;
 import org.apache.poi.hssf.record.RecordInputStream;
 import org.apache.poi.hssf.record.formula.function.FunctionMetadata;
 import org.apache.poi.hssf.record.formula.function.FunctionMetadataRegistry;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * @author aviks
@@ -55,9 +55,9 @@ public final class FuncPtg extends AbstractFunctionPtg {
         paramClass = fm.getParameterClassCodes();
     }
 
-    public void writeBytes(byte[] array, int offset) {
+    public void write(LittleEndianOutput out) {
-        array[offset+0]= (byte) (sid + getPtgClass());
+        out.writeByte(sid + getPtgClass());
-        LittleEndian.putShort(array,offset+1,field_2_fnc_index);
+        out.writeShort(field_2_fnc_index);
     }
 
     public int getNumberOfOperands() {

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

@@ -16,10 +16,10 @@
 ==================================================================== */
 
 package org.apache.poi.hssf.record.formula;
-import org.apache.poi.util.LittleEndian;
 import org.apache.poi.hssf.record.RecordInputStream;
 import org.apache.poi.hssf.record.formula.function.FunctionMetadata;
 import org.apache.poi.hssf.record.formula.function.FunctionMetadataRegistry;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  *
@@ -64,10 +64,10 @@ public final class FuncVarPtg extends AbstractFunctionPtg{
         }
     }
 
-     public void writeBytes(byte[] array, int offset) {
+    public void write(LittleEndianOutput out) {
-        array[offset+0]=(byte) (sid + getPtgClass());
+        out.writeByte(sid + getPtgClass());
-        array[offset+1]=field_1_num_args;
+        out.writeByte(field_1_num_args);
-        LittleEndian.putShort(array,offset+2,field_2_fnc_index);
+        out.writeShort(field_2_fnc_index);
     }
 
      public int getNumberOfOperands() {

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

@@ -18,11 +18,12 @@
 package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Integer (unsigned short integer)
+ * Integer (unsigned short integer) Stores an unsigned short value (java int) in
- * Stores an unsigned short value (java int) in a formula
+ * a formula
+ * 
  * @author Andrew C. Oliver (acoliver at apache dot org)
  * @author Jason Height (jheight at chariot dot net dot au)
  */
@@ -33,6 +34,7 @@ public final class IntPtg extends ScalarConstantPtg {
 
 	/**
 	 * Excel represents integers 0..65535 with the tInt token.
+	 * 
 	 * @return <code>true</code> if the specified value is within the range of values 
 	 * <tt>IntPtg</tt> can represent.
 	 */
@@ -59,9 +61,9 @@ public final class IntPtg extends ScalarConstantPtg {
 		return field_1_value;
 	}
 
-    public void writeBytes(byte [] array, int offset) {
+	public void write(LittleEndianOutput out) {
-        array[ offset + 0 ] = sid;
+		out.writeByte(sid + getPtgClass());
-        LittleEndian.putUShort(array, offset + 1, getValue());
+		out.writeShort(getValue());
 	}
 
 	public int getSize() {

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

@@ -17,6 +17,7 @@
 
 package org.apache.poi.hssf.record.formula;
 
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * @author Daniel Noll (daniel at nuix dot com dot au)
@@ -34,26 +35,19 @@ public final class IntersectionPtg extends OperationPtg {
 		return true;
 	}
 
-    public int getSize()
+	public int getSize() {
-    {
 		return 1;
 	}
 
-    public void writeBytes( byte[] array, int offset )
+	public void write(LittleEndianOutput out) {
-    {
+		out.writeByte(sid + getPtgClass());
-        array[ offset + 0 ] = sid;
 	}
 
-    /** Implementation of method from Ptg */
+	public String toFormulaString() {
-    public String toFormulaString()
-    {
 		return " ";
 	}
 
-
+	public String toFormulaString(String[] operands) {
-    /** implementation of method from OperationsPtg*/
-    public String toFormulaString(String[] operands)
-    {
 		StringBuffer buffer = new StringBuffer();
 
 		buffer.append(operands[0]);
@@ -62,9 +56,7 @@ public final class IntersectionPtg extends OperationPtg {
 		return buffer.toString();
 	}
 
-    public int getNumberOfOperands()
+	public int getNumberOfOperands() {
-    {
 		return 2;
 	}
-
 }

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

@@ -18,7 +18,7 @@
 package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * @author Daniel Noll (daniel at nuix dot com dot au)
@@ -26,55 +26,32 @@ import org.apache.poi.util.LittleEndian;
 public class MemAreaPtg extends OperandPtg {
 	public final static short sid = 0x26;
 	private final static int SIZE = 7;
-    private int               field_1_reserved;
+	private final int field_1_reserved;
-    private short             field_2_subex_len;
+	private final int field_2_subex_len;
 
 	/** Creates new MemAreaPtg */
 
-    public MemAreaPtg()
+	public MemAreaPtg(int subexLen) {
-    {
+		field_1_reserved = 0;
+		field_2_subex_len = subexLen;
 	}
 
-    public MemAreaPtg(RecordInputStream in)
+	public MemAreaPtg(RecordInputStream in) {
-    {
 		field_1_reserved = in.readInt();
 		field_2_subex_len = in.readShort();
 	}
 
-    public void setReserved(int res)
+	public void write(LittleEndianOutput out) {
-    {
+		out.writeByte(sid + getPtgClass());
-        field_1_reserved = res;
+		out.writeInt(field_1_reserved);
+		out.writeShort(field_2_subex_len);
 	}
 
-    public int getReserved()
+	public int getSize() {
-    {
-        return field_1_reserved;
-    }
-
-    public void setSubexpressionLength(short subexlen)
-    {
-        field_2_subex_len = subexlen;
-    }
-
-    public short getSubexpressionLength()
-    {
-        return field_2_subex_len;
-    }
-
-    public void writeBytes(byte [] array, int offset)
-    {
-        array[offset] = (byte) (sid + getPtgClass());
-        LittleEndian.putInt(array, offset + 1, field_1_reserved);
-        LittleEndian.putShort(array, offset + 5, field_2_subex_len);
-    }
-
-    public int getSize()
-    {
 		return SIZE;
 	}
 
-    public String toFormulaString()
+	public String toFormulaString() {
-    {
 		return ""; // TODO: Not sure how to format this. -- DN
 	}
 

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

@@ -18,7 +18,7 @@
 package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
-import org.apache.poi.hssf.usermodel.HSSFWorkbook;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * 
@@ -26,27 +26,32 @@ import org.apache.poi.hssf.usermodel.HSSFWorkbook;
  * @author Jason Height (jheight at chariot dot net dot au)
  * @author Daniel Noll (daniel at nuix dot com dot au)
  */
-
+public final class MemErrPtg extends OperandPtg {
-public final class MemErrPtg extends MemAreaPtg {
 	public final static short sid = 0x27;
-
+	private final static int SIZE = 7;
-    /** Creates new MemErrPtg */
+	private int field_1_reserved;
-
+	private short field_2_subex_len;
-    public MemErrPtg()
-    {
-    }
 
 	public MemErrPtg(RecordInputStream in) {
-        super(in);
+		field_1_reserved = in.readInt();
+		field_2_subex_len = in.readShort();
 	}
 
-    public void writeBytes(byte [] array, int offset) {
+	public void write(LittleEndianOutput out) {
-        super.writeBytes(array, offset);
+		out.writeByte(sid + getPtgClass());
-        array[offset] = (byte) (sid + getPtgClass());
+		out.writeInt(field_1_reserved);
+		out.writeShort(field_2_subex_len);
 	}
 
-    public String toFormulaString()
+	public int getSize() {
-    {
+		return SIZE;
+	}
+
+	public String toFormulaString() {
 		return "ERR#";
 	}
+
+	public byte getDefaultOperandClass() {
+		return Ptg.CLASS_VALUE;
+	}
 }

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

@@ -18,7 +18,7 @@
 package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * @author Glen Stampoultzis (glens at apache.org)
@@ -28,8 +28,9 @@ public final class MemFuncPtg extends OperandPtg {
 	public final static byte sid = 0x29;
 	private final int field_1_len_ref_subexpression;
 
-    /**Creates new function pointer from a byte array
+	/**
-     * usually called while reading an excel file.
+	 * Creates new function pointer from a byte array usually called while
+	 * reading an excel file.
 	 */
 	public MemFuncPtg(RecordInputStream in) {
 		this(in.readUShort());
@@ -39,34 +40,28 @@ public final class MemFuncPtg extends OperandPtg {
 		field_1_len_ref_subexpression = subExprLen;
 	}
 
-	public int getSize()
+	public int getSize() {
-    {
 		return 3;
 	}
 
-    public void writeBytes( byte[] array, int offset )
+	public void write(LittleEndianOutput out) {
-    {
+		out.writeByte(sid + getPtgClass());
-        array[offset + 0] =  sid ;
+		out.writeShort(field_1_len_ref_subexpression);
-        LittleEndian.putUShort( array, offset + 1, field_1_len_ref_subexpression );
 	}
 
-    public String toFormulaString()
+	public String toFormulaString() {
-    {
 		return "";
 	}
 
-    public byte getDefaultOperandClass()
+	public byte getDefaultOperandClass() {
-    {
 		return Ptg.CLASS_REF;
 	}
 
-    public int getNumberOfOperands()
+	public int getNumberOfOperands() {
-    {
 		return field_1_len_ref_subexpression;
 	}
 
-    public int getLenRefSubexpression()
+	public int getLenRefSubexpression() {
-    {
 		return field_1_len_ref_subexpression;
 	}
 }

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

@@ -17,10 +17,13 @@
 
 package org.apache.poi.hssf.record.formula;
 
+import org.apache.poi.util.LittleEndianOutput;
+
 /**
  * Missing Function Arguments
  * 
  * Avik Sengupta <avik at apache.org>
+ * 
  * @author Jason Height (jheight at chariot dot net dot au)
  */
 public final class MissingArgPtg extends ScalarConstantPtg {
@@ -34,8 +37,8 @@ public final class MissingArgPtg extends ScalarConstantPtg {
 		// enforce singleton
 	}
 
-    public void writeBytes(byte [] array, int offset) {
+	public void write(LittleEndianOutput out) {
-        array[ offset + 0 ] = sid;
+		out.writeByte(sid + getPtgClass());
 	}
 
 	public int getSize() {

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

@@ -18,9 +18,9 @@
 package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
-import org.apache.poi.ss.formula.WorkbookDependentFormula;
 import org.apache.poi.ss.formula.FormulaRenderingWorkbook;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.ss.formula.WorkbookDependentFormula;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * 
@@ -55,20 +55,20 @@ public final class NamePtg extends OperandPtg implements WorkbookDependentFormul
 		return field_1_label_index - 1; // convert to zero based
 	}
 
-    public void writeBytes(byte [] array, int offset) {
+	public void write(LittleEndianOutput out) {
-    	LittleEndian.putByte(array, offset + 0, sid + getPtgClass());
+		out.writeByte(sid + getPtgClass());
-		LittleEndian.putUShort(array, offset + 1, field_1_label_index);
+		out.writeShort(field_1_label_index);
-		LittleEndian.putUShort(array, offset + 3, field_2_zero);
+		out.writeShort(field_2_zero);
 	}
 
 	public int getSize() {
 		return SIZE;
 	}
 
-    public String toFormulaString(FormulaRenderingWorkbook book)
+	public String toFormulaString(FormulaRenderingWorkbook book) {
-    {
 		return book.getNameText(this);
 	}
+
 	public String toFormulaString() {
 		throw new RuntimeException("3D references need a workbook to determine formula text");
 	}

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

@@ -18,9 +18,9 @@
 package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
-import org.apache.poi.ss.formula.WorkbookDependentFormula;
 import org.apache.poi.ss.formula.FormulaRenderingWorkbook;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.ss.formula.WorkbookDependentFormula;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * 
@@ -55,11 +55,11 @@ public final class NameXPtg extends OperandPtg implements WorkbookDependentFormu
 		this(in.readUShort(), in.readUShort(), in.readUShort());
 	}
 
-	public void writeBytes(byte[] array, int offset) {
+	public void write(LittleEndianOutput out) {
-		LittleEndian.putByte(array, offset + 0, sid + getPtgClass());
+		out.writeByte(sid + getPtgClass());
-		LittleEndian.putUShort(array, offset + 1, _sheetRefIndex);
+		out.writeShort(_sheetRefIndex);
-		LittleEndian.putUShort(array, offset + 3, _nameNumber);
+		out.writeShort(_nameNumber);
-		LittleEndian.putUShort(array, offset + 5, _reserved);
+		out.writeShort(_reserved);
 	}
 
 	public int getSize() {

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

@@ -18,12 +18,12 @@
 package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Number
+ * Number Stores a floating point value in a formula value stored in a 8 byte
- * Stores a floating point value in a formula
+ * field using IEEE notation
- * value stored in a 8 byte field using IEEE notation
+ * 
  * @author Avik Sengupta
  * @author Jason Height (jheight at chariot dot net dot au)
  */
@@ -32,15 +32,16 @@ public final class NumberPtg extends ScalarConstantPtg {
 	public final static byte sid = 0x1f;
 	private final double field_1_value;
 
-    /** Create a NumberPtg from a byte array read from disk */
 	public NumberPtg(RecordInputStream in) {
 		this(in.readDouble());
 	}
 
-    /** Create a NumberPtg from a string representation of  the number
+	/**
-     *  Number format is not checked, it is expected to be validated in the parser
+	 * Create a NumberPtg from a string representation of the number Number
-     *   that calls this method. 
+	 * format is not checked, it is expected to be validated in the parser that
-     *  @param value : String representation of a floating point number
+	 * calls this method.
+	 * 
+	 * @param value String representation of a floating point number
 	 */
 	public NumberPtg(String value) {
 		this(Double.parseDouble(value));
@@ -54,9 +55,9 @@ public final class NumberPtg extends ScalarConstantPtg {
 		return field_1_value;
 	}
 
-    public void writeBytes(byte [] array, int offset) {
+	public void write(LittleEndianOutput out) {
-        array[ offset + 0 ] = sid;
+		out.writeByte(sid + getPtgClass());
-        LittleEndian.putDouble(array, offset + 1, getValue());
+		out.writeDouble(getValue());
 	}
 
 	public int getSize() {

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

@@ -15,17 +15,18 @@
    limitations under the License.
 ==================================================================== */
 
-
 package org.apache.poi.hssf.record.formula;
 
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * While formula tokens are stored in RPN order and thus do not need parenthesis for 
+ * While formula tokens are stored in RPN order and thus do not need parenthesis
- * precedence reasons, Parenthesis tokens ARE written to ensure that user entered
+ * for precedence reasons, Parenthesis tokens ARE written to ensure that user
- * parenthesis are displayed as-is on reading back
+ * entered parenthesis are displayed as-is on reading back
+ * 
+ * Avik Sengupta <lists@aviksengupta.com> Andrew C. Oliver (acoliver at
+ * apache dot org)
  * 
- * Avik Sengupta <lists@aviksengupta.com>
- * Andrew C. Oliver (acoliver at apache dot org)
  * @author Jason Height (jheight at chariot dot net dot au)
  */
 public final class ParenthesisPtg extends ControlPtg {
@@ -34,26 +35,23 @@ public final class ParenthesisPtg extends ControlPtg {
 	public final static byte sid = 0x15;
 
 	public static final ControlPtg instance = new ParenthesisPtg();
+
 	private ParenthesisPtg() {
 		// enforce singleton
 	}
 
-    public void writeBytes(byte [] array, int offset)
+	public void write(LittleEndianOutput out) {
-    {
+		out.writeByte(sid + getPtgClass());
-        array[ offset + 0 ] = sid;
 	}
 
-    public int getSize()
+	public int getSize() {
-    {
 		return SIZE;
 	}
 
-    public String toFormulaString()
+	public String toFormulaString() {
-    {
 		return "()";
 	}
 
-          
 	public String toFormulaString(String[] operands) {
 		return "(" + operands[0] + ")";
 	}

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

@@ -21,7 +21,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.apache.poi.hssf.record.RecordInputStream;
-import org.apache.poi.util.HexDump;
+import org.apache.poi.util.LittleEndianByteArrayOutputStream;
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
@@ -128,7 +128,7 @@ public abstract class Ptg implements Cloneable {
 
 	private static Ptg createBasePtg(byte id, RecordInputStream in) {
 		switch(id) {
-			case 0x00:                return new UnknownPtg(); // TODO - not a real Ptg
+			case 0x00:                return new UnknownPtg(id); // TODO - not a real Ptg
 			case ExpPtg.sid:          return new ExpPtg(in);          // 0x01
 			case TblPtg.sid:          return new TblPtg(in);          // 0x02
 			case AddPtg.sid:          return AddPtg.instance;         // 0x03
@@ -229,14 +229,16 @@ public abstract class Ptg implements Cloneable {
 	 */
 	public static int serializePtgs(Ptg[] ptgs, byte[] array, int offset) {
 		int pos = 0;
-		int size = ptgs.length;
+		int nTokens = ptgs.length;
+		
+		LittleEndianOutput out = new LittleEndianByteArrayOutputStream(array, offset);
 
 		List arrayPtgs = null;
 
-		for (int k = 0; k < size; k++) {
+		for (int k = 0; k < nTokens; k++) {
 			Ptg ptg = ptgs[k];
 
-			ptg.writeBytes(array, pos + offset);
+			ptg.write(out);
 			if (ptg instanceof ArrayPtg) {
 				if (arrayPtgs == null) {
 					arrayPtgs = new ArrayList(5);
@@ -266,38 +268,12 @@ public abstract class Ptg implements Cloneable {
 	 */
 //    public abstract int getDataSize();
 
-	public final byte[] getBytes()
+	public abstract void write(LittleEndianOutput out);
-	{
-		int    size  = getSize();
-		byte[] bytes = new byte[ size ];
-
-		writeBytes(bytes, 0);
-		return bytes;
-	}
-	/** write this Ptg to a byte array*/
-	public abstract void writeBytes(byte [] array, int offset);
-
-	public void write(LittleEndianOutput out) {
-		out.write(getBytes()); // TODO - optimise - just a hack for the moment
-	}
 	
 	/**
 	 * return a string representation of this token alone
 	 */
 	public abstract String toFormulaString();
-	/**
-	 * dump a debug representation (hexdump) to a string
-	 */
-	public final String toDebugString() {
-		byte[] ba = new byte[getSize()];
-		writeBytes(ba,0);
-		try {
-			return HexDump.dump(ba,0,0);
-		} catch (Exception e) {
-			e.printStackTrace();
-		}
-		return null;
-	}
 
 	/** Overridden toString method to ensure object hash is not printed.
 	 * This helps get rid of gratuitous diffs when comparing two dumps

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

@@ -17,6 +17,8 @@
 
 package org.apache.poi.hssf.record.formula;
 
+import org.apache.poi.util.LittleEndianOutput;
+
 
 /**
  * @author Daniel Noll (daniel at nuix dot com dot au)
@@ -40,9 +42,8 @@ public final class RangePtg  extends OperationPtg {
         return SIZE;
     }
 
-    public void writeBytes( byte[] array, int offset )
+    public void write(LittleEndianOutput out) {
-    {
+        out.writeByte(sid + getPtgClass());
-        array[ offset + 0 ] = sid;
     }
 
     public String toFormulaString()

src/java/org/apache/poi/hssf/record/formula/Ref2DPtgBase.java

@@ -18,7 +18,7 @@
 package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * @author Josh Micich
@@ -44,18 +44,22 @@ abstract class Ref2DPtgBase extends RefPtgBase {
 	protected Ref2DPtgBase(RecordInputStream in) {
 		readCoordinates(in);
 	}
-    public final void writeBytes(byte [] array, int offset) {
+
-    	LittleEndian.putByte(array, offset+0, getSid() + getPtgClass());
+	public void write(LittleEndianOutput out) {
-    	writeCoordinates(array, offset+1);
+		out.writeByte(getSid() + getPtgClass());
+		writeCoordinates(out);
 	}
+
 	public final String toFormulaString() {
 		return formatReferenceAsString();
 	}
 
 	protected abstract byte getSid();
+
 	public final int getSize() {
 		return SIZE;
 	}
+
 	public final String toString() {
 		StringBuffer sb = new StringBuffer();
 		sb.append(getClass().getName());

src/java/org/apache/poi/hssf/record/formula/Ref3DPtg.java

@@ -22,7 +22,7 @@ import org.apache.poi.hssf.util.CellReference;
 import org.apache.poi.ss.formula.ExternSheetReferenceToken;
 import org.apache.poi.ss.formula.FormulaRenderingWorkbook;
 import org.apache.poi.ss.formula.WorkbookDependentFormula;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * Title:        Reference 3D Ptg <P>
@@ -66,10 +66,10 @@ public final class Ref3DPtg extends RefPtgBase implements WorkbookDependentFormu
         return sb.toString();
     }
 
-    public void writeBytes(byte [] array, int offset) {
+	public void write(LittleEndianOutput out) {
-        LittleEndian.putByte(array, 0 + offset, sid + getPtgClass());
+		out.writeByte(sid + getPtgClass());
-        LittleEndian.putUShort(array, 1 + offset, getExternSheetIndex());
+        out.writeShort(getExternSheetIndex());
-        writeCoordinates(array, offset + 3);
+        writeCoordinates(out);
     }
 
     public int getSize() {

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

@@ -19,8 +19,7 @@ package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordInputStream;
 import org.apache.poi.hssf.usermodel.HSSFErrorConstants;
-import org.apache.poi.hssf.usermodel.HSSFWorkbook;
+import org.apache.poi.util.LittleEndianOutput;
-import org.apache.poi.util.LittleEndian;
 
 /**
  * RefError - handles deleted cell reference
@@ -43,9 +42,9 @@ public final class RefErrorPtg extends OperandPtg {
         return getClass().getName();
     }
 
-    public void writeBytes(byte [] array, int offset) {
+    public void write(LittleEndianOutput out) {
-        LittleEndian.putByte(array, offset+0, sid + getPtgClass());
+        out.writeByte(sid + getPtgClass());
-        LittleEndian.putInt(array,offset+1,field_1_reserved);
+        out.writeInt(field_1_reserved);
     }
 
     public int getSize()

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

@@ -21,10 +21,11 @@ import org.apache.poi.hssf.record.RecordInputStream;
 import org.apache.poi.hssf.util.CellReference;
 import org.apache.poi.util.BitField;
 import org.apache.poi.util.BitFieldFactory;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * ReferencePtgBase - handles references (such as A1, A2, IA4)
+ * 
  * @author Andrew C. Oliver (acoliver@apache.org)
  * @author Jason Height (jheight at chariot dot net dot au)
  */
@@ -34,10 +35,9 @@ public abstract class RefPtgBase extends OperandPtg {
 
 	/** The row index - zero based unsigned 16 bit value */
 	private int field_1_row;
-    /** Field 2
+	/**
-     * - lower 8 bits is the zero based unsigned byte column index
+	 * Field 2 - lower 8 bits is the zero based unsigned byte column index - bit
-     * - bit 16 - isRowRelative
+	 * 16 - isRowRelative - bit 15 - isColumnRelative
-     * - bit 15 - isColumnRelative
 	 */
 	private int field_2_col;
 	private static final BitField rowRelative = BitFieldFactory.getInstance(0x8000);
@@ -71,16 +71,17 @@ public abstract class RefPtgBase extends OperandPtg {
 		field_1_row = in.readUShort();
 		field_2_col = in.readUShort();
 	}
-    protected final void writeCoordinates(byte[] array, int offset) {
+
-        LittleEndian.putUShort(array, offset + 0, field_1_row);
+	protected final void writeCoordinates(LittleEndianOutput out) {
-        LittleEndian.putUShort(array, offset + 2, field_2_col);
+		out.writeShort(field_1_row);
+		out.writeShort(field_2_col);
 	}
 
-    public final void setRow(int row) {
+	public final void setRow(int rowIndex) {
-        if(row < 0 || row >= MAX_ROW_NUMBER) {
+		if (rowIndex < 0 || rowIndex >= MAX_ROW_NUMBER) {
-           throw new IllegalArgumentException("The row number, when specified as an integer, must be between 0 and " + MAX_ROW_NUMBER);
+			throw new IllegalArgumentException("rowIndex must be between 0 and " + MAX_ROW_NUMBER);
 		}
-        field_1_row = row;
+		field_1_row = rowIndex;
 	}
 
 	/**
@@ -116,6 +117,7 @@ public abstract class RefPtgBase extends OperandPtg {
 	public final int getColumn() {
 		return column.getValue(field_2_col);
 	}
+
 	protected final String formatReferenceAsString() {
 		// Only make cell references as needed. Memory is an issue
 		CellReference cr = new CellReference(getRow(), getColumn(), !isRowRelative(), !isColRelative());

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

@@ -20,6 +20,7 @@ package org.apache.poi.hssf.record.formula;
 import org.apache.poi.hssf.record.RecordInputStream;
 import org.apache.poi.util.BitField;
 import org.apache.poi.util.BitFieldFactory;
+import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.StringUtil;
 
 /**
@@ -78,14 +79,14 @@ public final class StringPtg extends ScalarConstantPtg {
         return field_3_string;
     }
 
-    public void writeBytes(byte[] array, int offset) {
+    public void write(LittleEndianOutput out) {
-        array[offset + 0] = sid;
+        out.writeByte(sid + getPtgClass());
-        array[offset + 1] = (byte) field_1_length;
+        out.writeByte(field_1_length);
-        array[offset + 2] = field_2_options;
+        out.writeByte(field_2_options);
         if (fHighByte.isSet(field_2_options)) {
-            StringUtil.putUnicodeLE(getValue(), array, offset + 3);
+            StringUtil.putUnicodeLE(getValue(), out);
         } else {
-            StringUtil.putCompressedUnicode(getValue(), array, offset + 3);
+            StringUtil.putCompressedUnicode(getValue(), out);
         }
     }
 

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

@@ -19,7 +19,7 @@ package org.apache.poi.hssf.record.formula;
 
 import org.apache.poi.hssf.record.RecordFormatException;
 import org.apache.poi.hssf.record.RecordInputStream;
-import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  * This ptg indicates a data table.
@@ -48,10 +48,10 @@ public final class TblPtg extends ControlPtg {
       field_2_first_col = in.readUShort();
     }
 
-    public void writeBytes(byte [] array, int offset) {
+    public void write(LittleEndianOutput out) {
-      LittleEndian.putByte(array, offset+0, sid);
+        out.writeByte(sid + getPtgClass());
-      LittleEndian.putUShort(array, offset+1, field_1_first_row);
+        out.writeShort(field_1_first_row);
-      LittleEndian.putUShort(array, offset+3, field_2_first_col);
+        out.writeShort(field_2_first_col);
     }
 
     public int getSize() {

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

@@ -17,6 +17,8 @@
 
 package org.apache.poi.hssf.record.formula;
 
+import org.apache.poi.util.LittleEndianOutput;
+
 
 /**
  * @author Glen Stampoultzis (glens at apache.org)
@@ -39,9 +41,8 @@ public final class UnionPtg extends OperationPtg {
         return 1;
     }
 
-    public void writeBytes( byte[] array, int offset )
+    public void write(LittleEndianOutput out) {
-    {
+        out.writeByte(sid + getPtgClass());
-        array[ offset + 0 ] = sid;
     }
 
     public String toFormulaString()

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

@@ -16,7 +16,7 @@
 ==================================================================== */
 package org.apache.poi.hssf.record.formula;
 
-import org.apache.poi.hssf.record.RecordInputStream;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
  *
@@ -25,22 +25,17 @@ import org.apache.poi.hssf.record.RecordInputStream;
  */
 public class UnknownPtg extends Ptg {
     private short size = 1;
+    private final int _sid;
 
-    /** Creates new UnknownPtg */
+    public UnknownPtg(int sid) {
-
+        _sid = sid;
-    public UnknownPtg()
-    {
-    }
-
-    public UnknownPtg(RecordInputStream in) {
-        // doesn't need anything
     }
 
     public boolean isBaseToken() {
         return true;
     }
-    public void writeBytes(byte [] array, int offset)
+    public void write(LittleEndianOutput out) {
-    {
+        out.writeByte(_sid);
     }
 
     public int getSize()
@@ -55,8 +50,6 @@ public class UnknownPtg extends Ptg {
     public byte getDefaultOperandClass() {return Ptg.CLASS_VALUE;}
 
     public Object clone() {
-      return new UnknownPtg();
+      return this;
     }
-
-    
 }

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

@@ -17,11 +17,12 @@
 
 package org.apache.poi.hssf.record.formula;
 
-import org.apache.poi.hssf.usermodel.HSSFWorkbook;
+import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Common superclass of all value operators.
+ * Common superclass of all value operators. Subclasses include all unary and
- * Subclasses include all unary and binary operators except for the reference operators (IntersectionPtg, RangePtg, UnionPtg) 
+ * binary operators except for the reference operators (IntersectionPtg,
+ * RangePtg, UnionPtg)
  * 
  * @author Josh Micich
  */
@@ -38,8 +39,8 @@ public abstract class ValueOperatorPtg extends OperationPtg {
 		return Ptg.CLASS_VALUE;
 	}
 
-	public final void writeBytes(byte[] array, int offset) {
+	public void write(LittleEndianOutput out) {
-		array[offset + 0] = getSid();
+		out.writeByte(getSid());
 	}
 
 	protected abstract byte getSid();
@@ -47,6 +48,7 @@ public abstract class ValueOperatorPtg extends OperationPtg {
 	public final int getSize() {
 		return 1;
 	}
+
 	public final String toFormulaString() {
 		// TODO - prune this method out of the hierarchy
 		throw new RuntimeException("toFormulaString(String[] operands) should be used for subclasses of OperationPtgs");

src/java/org/apache/poi/util/LittleEndianByteArrayOutputStream.java

@@ -0,0 +1,84 @@
+/* ====================================================================
+   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.
+==================================================================== */
+
+package org.apache.poi.util;
+
+
+/**
+ * Adapts a plain byte array to {@link LittleEndianOutput} 
+ * 
+ * 
+ * @author Josh Micich
+ */
+public final class LittleEndianByteArrayOutputStream implements LittleEndianOutput {
+	private final byte[] _buf;
+	private final int _endIndex;
+	private int _writeIndex;
+
+	public LittleEndianByteArrayOutputStream(byte[] buf, int startOffset, int maxWriteLen) {
+		_buf = buf;
+		_writeIndex = startOffset;
+		_endIndex = startOffset + maxWriteLen;
+	}
+	public LittleEndianByteArrayOutputStream(byte[] buf, int startOffset) {
+		this(buf, startOffset, buf.length - startOffset);
+	}
+
+	private void checkPosition(int i) {
+		if (i > _endIndex - _writeIndex) {
+			throw new RuntimeException("Buffer overrun");
+		}
+	}
+
+	public void writeByte(int v) {
+		checkPosition(1);
+		_buf[_writeIndex++] = (byte)v;
+	}
+
+	public void writeDouble(double v) {
+		writeLong(Double.doubleToLongBits(v));
+	}
+
+	public void writeInt(int v) {
+		checkPosition(4);
+		int i = _writeIndex;
+		_buf[i++] = (byte)((v >>>  0) & 0xFF);
+		_buf[i++] = (byte)((v >>>  8) & 0xFF);
+		_buf[i++] = (byte)((v >>> 16) & 0xFF);
+		_buf[i++] = (byte)((v >>> 24) & 0xFF);
+		_writeIndex = i;
+	}
+
+	public void writeLong(long v) {
+		writeInt((int)(v >>  0));
+		writeInt((int)(v >> 32));
+	}
+
+	public void writeShort(int v) {
+		checkPosition(2);
+		int i = _writeIndex;
+		_buf[i++] = (byte)((v >>>  0) & 0xFF);
+		_buf[i++] = (byte)((v >>>  8) & 0xFF);
+		_writeIndex = i;
+	}
+	public void write(byte[] b) {
+		int len = b.length;
+		checkPosition(len);
+		System.arraycopy(b, 0, _buf, _writeIndex, len);
+		_writeIndex += len;
+	}
+}