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diff --git a/src/org/eclipse/jdt/internal/compiler/ast/CompoundAssignment.java b/src/org/eclipse/jdt/internal/compiler/ast/CompoundAssignment.java
deleted file mode 100644
index 47745f1..0000000
--- a/src/org/eclipse/jdt/internal/compiler/ast/CompoundAssignment.java
+++ /dev/null
@@ -1,157 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2000, 2004 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials 
- * are made available under the terms of the Common Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- * 
- * Contributors:
- *     IBM Corporation - initial API and implementation
- *******************************************************************************/
-package org.eclipse.jdt.internal.compiler.ast;
-
-import org.eclipse.jdt.internal.compiler.ASTVisitor;
-import org.eclipse.jdt.internal.compiler.codegen.*;
-import org.eclipse.jdt.internal.compiler.flow.*;
-import org.eclipse.jdt.internal.compiler.lookup.*;
-
-public class CompoundAssignment extends Assignment implements OperatorIds {
-	public int operator;
-	public int assignmentImplicitConversion;
-
-	//  var op exp is equivalent to var = (varType) var op exp
-	// assignmentImplicitConversion stores the cast needed for the assignment
-
-	public CompoundAssignment(Expression lhs, Expression expression,int operator, int sourceEnd) {
-		//lhs is always a reference by construction ,
-		//but is build as an expression ==> the checkcast cannot fail
-	
-		super(lhs, expression, sourceEnd);
-		lhs.bits &= ~IsStrictlyAssignedMASK; // tag lhs as NON assigned - it is also a read access
-		lhs.bits |= IsCompoundAssignedMASK; // tag lhs as assigned by compound
-		this.operator = operator ;
-	}
-	
-	public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
-		// record setting a variable: various scenarii are possible, setting an array reference, 
-		// a field reference, a blank final field reference, a field of an enclosing instance or 
-		// just a local variable.
-	
-		return  ((Reference) lhs).analyseAssignment(currentScope, flowContext, flowInfo, this, true).unconditionalInits();
-	}
-	
-	public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
-	
-		// various scenarii are possible, setting an array reference, 
-		// a field reference, a blank final field reference, a field of an enclosing instance or 
-		// just a local variable.
-	
-		int pc = codeStream.position;
-		 ((Reference) lhs).generateCompoundAssignment(currentScope, codeStream, expression, operator, assignmentImplicitConversion, valueRequired);
-		if (valueRequired) {
-			codeStream.generateImplicitConversion(implicitConversion);
-		}
-		codeStream.recordPositionsFrom(pc, this.sourceStart);
-	}
-	
-	public String operatorToString() {
-		switch (operator) {
-			case PLUS :
-				return "+="; //$NON-NLS-1$
-			case MINUS :
-				return "-="; //$NON-NLS-1$
-			case MULTIPLY :
-				return "*="; //$NON-NLS-1$
-			case DIVIDE :
-				return "/="; //$NON-NLS-1$
-			case AND :
-				return "&="; //$NON-NLS-1$
-			case OR :
-				return "|="; //$NON-NLS-1$
-			case XOR :
-				return "^="; //$NON-NLS-1$
-			case REMAINDER :
-				return "%="; //$NON-NLS-1$
-			case LEFT_SHIFT :
-				return "<<="; //$NON-NLS-1$
-			case RIGHT_SHIFT :
-				return ">>="; //$NON-NLS-1$
-			case UNSIGNED_RIGHT_SHIFT :
-				return ">>>="; //$NON-NLS-1$
-		}
-		return "unknown operator"; //$NON-NLS-1$
-	}
-	
-	public StringBuffer printExpressionNoParenthesis(int indent, StringBuffer output) {
-	
-		lhs.printExpression(indent, output).append(' ').append(operatorToString()).append(' ');
-		return expression.printExpression(0, output) ; 
-	}
-	
-	public TypeBinding resolveType(BlockScope scope) {
-		constant = NotAConstant;
-		if (!(this.lhs instanceof Reference) || this.lhs.isThis()) {
-			scope.problemReporter().expressionShouldBeAVariable(this.lhs);
-			return null;
-		}
-		TypeBinding lhsType = lhs.resolveType(scope);
-		TypeBinding expressionType = expression.resolveType(scope);
-		if (lhsType == null || expressionType == null)
-			return null;
-	
-		int lhsId = lhsType.id;
-		int expressionId = expressionType.id;
-		if (restrainUsageToNumericTypes() && !lhsType.isNumericType()) {
-			scope.problemReporter().operatorOnlyValidOnNumericType(this, lhsType, expressionType);
-			return null;
-		}
-		if (lhsId > 15 || expressionId > 15) {
-			if (lhsId != T_String) { // String += Thread is valid whereas Thread += String  is not
-				scope.problemReporter().invalidOperator(this, lhsType, expressionType);
-				return null;
-			}
-			expressionId = T_Object; // use the Object has tag table
-		}
-	
-		// the code is an int
-		// (cast)  left   Op (cast)  rigth --> result 
-		//  0000   0000       0000   0000      0000
-		//  <<16   <<12       <<8     <<4        <<0
-	
-		// the conversion is stored INTO the reference (info needed for the code gen)
-		int result = OperatorExpression.OperatorSignatures[operator][ (lhsId << 4) + expressionId];
-		if (result == T_undefined) {
-			scope.problemReporter().invalidOperator(this, lhsType, expressionType);
-			return null;
-		}
-		if (operator == PLUS){
-			if(lhsId == T_JavaLangObject) {
-				// <Object> += <String> is illegal (39248)
-				scope.problemReporter().invalidOperator(this, lhsType, expressionType);
-				return null;
-			} else {
-				// <int | boolean> += <String> is illegal
-				if ((lhsType.isNumericType() || lhsId == T_boolean) && !expressionType.isNumericType()){
-					scope.problemReporter().invalidOperator(this, lhsType, expressionType);
-					return null;
-				}
-			}
-		}
-		lhs.implicitConversion = result >>> 12;
-		expression.implicitConversion = (result >>> 4) & 0x000FF;
-		assignmentImplicitConversion = (lhsId << 4) + (result & 0x0000F);
-		return this.resolvedType = lhsType;
-	}
-	
-	public boolean restrainUsageToNumericTypes(){
-		return false ;
-	}
-	
-	public void traverse(ASTVisitor visitor, BlockScope scope) {
-		if (visitor.visit(this, scope)) {
-			lhs.traverse(visitor, scope);
-			expression.traverse(visitor, scope);
-		}
-		visitor.endVisit(this, scope);
-	}
-}