--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tzservices/tzserver/Client/Include/tzrules.h	Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,84 @@
+// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#ifndef __TIMEZONERULES_H__
+#define __TIMEZONERULES_H__
+
+#include <e32base.h>
+#include <s32std.h>
+#include <tzdefines.h>
+#include "tzpersisted.h"
+
+const TInt KActualisedRulesGranularity = 8;
+
+// specifies the limits for rules caching.
+// (year - KRuleCacheLowerLimit) , (year + KRuleCacheUpperLimit)
+// the actual cache includes one more year at year - (KRuleCacheLowerLimit + 1)
+// required to provide the offset used at the start of the search 
+const TUint KRuleCacheLowerLimit = 2;
+const TUint KRuleCacheUpperLimit = 3;
+
+/**
+Encapsulates a single Time Zone DST Rule
+
+@internalComponent
+@since 9.1
+*/
+class TTzActualisedRule
+	{
+public:	
+	inline TTzActualisedRule(const TTime& aTimeOfChange, TInt  aStdOffset, TInt aDstOffset, TTzTimeReference aTimeReference);
+	inline TTzActualisedRule();
+	IMPORT_C void InternalizeL(RReadStream& aStream);
+	IMPORT_C void ExternalizeL(RWriteStream& aStream) const;
+
+	static TInt Order(const TTzActualisedRule& aLeft, const TTzActualisedRule& aRight);
+
+public:
+	/** time of DST change w.r.t to iTimeReference
+	*/
+	TTime iTimeOfChange;
+	/** std to UTC offset
+	*/
+	TInt32  iStdOffset;
+
+	/** wall-clock to standard time offset
+	*/
+	TInt32 iDstOffset;
+				
+	/** what time recogning iTimeOfChange is referenced to; see <code> TTzTimeReference </code> 
+	*/
+	TTzTimeReference iTimeReference;
+	};
+
+inline TTzActualisedRule::TTzActualisedRule(const TTime& aTimeOfChange, TInt  aStdOffset, TInt aDstOffset, TTzTimeReference aTimeReference) :
+					iTimeOfChange(aTimeOfChange),
+					iStdOffset(aStdOffset),
+					iDstOffset(aDstOffset),
+					iTimeReference(aTimeReference)
+	{
+	}
+
+inline TTzActualisedRule::TTzActualisedRule() :
+					iTimeOfChange(0),
+					iStdOffset(0),
+					iDstOffset(0),
+					iTimeReference(ETzUtcTimeReference)
+	{
+	}
+
+#endif
+
+