// 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:

// Implementation of ResourceCondition class

//

#include "conditionevaluate.h"

#include "cndlogical.h"

#include "cndfeature.h"

#include "cndcentralrepository.h"

#include "cndpublishsubscribe.h"

#include "cndsystemwideproperty.h"

CConditionEvaluate::CConditionEvaluate()

	{

	}

EXPORT_C CConditionEvaluate::~CConditionEvaluate()

	{

	}

EXPORT_C CConditionEvaluate* CConditionEvaluate::NewLC()

	{

	CConditionEvaluate* self = CConditionEvaluate::NewL();

	CleanupStack::PushL(self);

	return self;

	}

EXPORT_C CConditionEvaluate* CConditionEvaluate::NewL()

	{

	CConditionEvaluate* self = new (ELeave)CConditionEvaluate();

	return self;

	}

CConditionEvaluateBase* CConditionEvaluate::ReadConditionOnFeatureMatchL(TResourceReader& aReader)

    {

    const TInt featureId = aReader.ReadInt32();

    return CCndFeature::NewL(ECompareValue, featureId);

    }

CConditionEvaluateBase* CConditionEvaluate::ReadConditionOnFeatureL(TResourceReader& aReader)

    {

    const TInt featureId = aReader.ReadInt32();

    const TUint32 aCndValue = aReader.ReadUint32();

    return CCndFeature::NewL(ECompareFeatureData, featureId, aCndValue);

    }

CConditionEvaluateBase* CConditionEvaluate::ReadConditionOnCentRepFlagL(TResourceReader& aReader)

    {

    const TInt repositoryId = aReader.ReadInt32();

    const TUint32 key = aReader.ReadUint32();

    const TInt mask = aReader.ReadInt32();

    return CCndCentralRepository::NewL(ECompareBitwiseAnd, repositoryId, key, mask);

    }

CConditionEvaluateBase* CConditionEvaluate::ReadConditionOnCentRepMatchL(TResourceReader& aReader)

    {

    const TInt repositoryId = aReader.ReadInt32();

    const TUint32 key = aReader.ReadUint32();

    const TInt value = aReader.ReadInt32();

    return CCndCentralRepository::NewL(ECompareValue, repositoryId, key, value );

    }

CConditionEvaluateBase* CConditionEvaluate::ReadConditionOnPubSubFlagL(TResourceReader& aReader)

    {

    const TInt category = aReader.ReadInt32();

    const TUint32 key = aReader.ReadUint32();

    const TInt mask = aReader.ReadInt32();

    return CCndPublishSubscribe::NewL(ECompareBitwiseAnd, category, key, mask);

    }

CConditionEvaluateBase* CConditionEvaluate::ReadConditionOnPubSubMatchL(TResourceReader& aReader)

    {

    const TInt category = aReader.ReadInt32();

    const TUint32 key = aReader.ReadUint32();

    const TInt value = aReader.ReadInt32();

    return CCndPublishSubscribe::NewL(ECompareValue, category, key, value);

    }

CConditionEvaluateBase* CConditionEvaluate::ReadConditionOnSwpMatchL(TResourceReader& aReader)

    {

    const TUint32 key = aReader.ReadUint32();

    const TInt value = aReader.ReadInt32();

    return CCndSwp::NewL(ECompareValue, key, value);

    }

CConditionEvaluateBase* CConditionEvaluate::ReadConditionOnSwpFlagL(TResourceReader& aReader)

    {

    const TUint32 key = aReader.ReadUint32();

    const TInt mask = aReader.ReadInt32();

    return CCndSwp::NewL(ECompareBitwiseAnd, key, mask);

    }

CConditionEvaluateBase* CConditionEvaluate::ReadLogicalNotL(const CResourceFile& aResourceFile,TResourceReader& aReader,

		RArray<TUint32>& aUsedResourceIds)

    {

    const TUint32 resourceId = aReader.ReadUint32();

    CConditionEvaluateBase* sub = DoEvaluateLC(aResourceFile, resourceId, aUsedResourceIds);

    CConditionEvaluateBase* retVal = new (ELeave) CLogicalNot(sub);

    CleanupStack::Pop(sub); // CLogicalNot owns it now

    return retVal;

    }

CConditionEvaluateBase* CConditionEvaluate::ReadLogicalAndL(const CResourceFile& aResourceFile,TResourceReader& aReader,

		RArray<TUint32>& aUsedResourceIds)

    {

    const TUint32 lhsId = aReader.ReadUint32();

    const TUint32 rhsId = aReader.ReadUint32();

    CConditionEvaluateBase* lhs = DoEvaluateLC(aResourceFile, lhsId, aUsedResourceIds);

    CConditionEvaluateBase* rhs = DoEvaluateLC(aResourceFile, rhsId, aUsedResourceIds);

    CConditionEvaluateBase* retVal = new (ELeave) CLogicalAnd(lhs, rhs);

    CleanupStack::Pop(rhs); // CLogicalAnd owns it now

    CleanupStack::Pop(lhs); // CLogicalAnd owns it now

    return retVal;

    }

CConditionEvaluateBase* CConditionEvaluate::ReadLogicalOrL(const CResourceFile& aResourceFile,TResourceReader& aReader,

		RArray<TUint32>& aUsedResourceIds)

    {

    const TUint32 lhsId = aReader.ReadUint32();

    const TUint32 rhsId = aReader.ReadUint32();

    CConditionEvaluateBase* lhs = DoEvaluateLC(aResourceFile, lhsId, aUsedResourceIds);

    CConditionEvaluateBase* rhs = DoEvaluateLC(aResourceFile, rhsId, aUsedResourceIds);

    CConditionEvaluateBase* retVal = new (ELeave) CLogicalOr(lhs, rhs);

    CleanupStack::Pop(rhs); // CLogicalOr owns it now

    CleanupStack::Pop(lhs); // CLogicalOr owns it now

    return retVal;

    }

CConditionEvaluateBase* CConditionEvaluate::DoEvaluateLC(const CResourceFile& aResourceFile, const TInt aResourceId,

									RArray<TUint32>& aUsedResourceIds)

	{

    // Check for any recursive conditions

    TInt idx = aUsedResourceIds.FindReverse(aResourceId);

    if (0 <= idx)

        {

        //Leave in case of any recursive condition

        User::Leave(KErrCorrupt);

        }

    aUsedResourceIds.AppendL(aResourceId);

    HBufC8* buf = aResourceFile.AllocReadLC(aResourceId);

    TResourceReader reader;

    reader.SetBuffer(buf);

    TUint16 type = reader.ReadUint16();

    CConditionEvaluateBase* retVal = NULL;

    switch (type)

        {

    case EFeatureFlag:

    	retVal = ReadConditionOnFeatureMatchL(reader);

        break;

    case EFeatureFlagData:

    	retVal = ReadConditionOnFeatureL(reader);

    	break;

    case ECentRepFlag:

        retVal = ReadConditionOnCentRepFlagL(reader);

        break;

    case ECentRepIntVal:

        retVal = ReadConditionOnCentRepMatchL(reader);

        break;

    case EPubSubFlag:

        retVal = ReadConditionOnPubSubFlagL(reader);

        break;

    case EPubSubIntVal:

        retVal = ReadConditionOnPubSubMatchL(reader);

        break;

    case ELogicalNot:

        retVal = ReadLogicalNotL(aResourceFile, reader, aUsedResourceIds);

        break;

    case ELogicalAnd:

        retVal = ReadLogicalAndL(aResourceFile, reader, aUsedResourceIds);

        break;

    case ELogicalOr:

        retVal = ReadLogicalOrL(aResourceFile, reader, aUsedResourceIds);

        break;

    case ESwpIntVal:

        retVal = ReadConditionOnSwpMatchL(reader);

        break;

    case ESwpFlag:

        retVal = ReadConditionOnSwpFlagL(reader);

        break;    

    default:

        User::Leave(KErrCorrupt);

        }

    aUsedResourceIds.Remove(aUsedResourceIds.Count() - 1);

    CleanupStack::PopAndDestroy(buf);

    CleanupStack::PushL(retVal);

    return retVal;

	}

EXPORT_C TBool CConditionEvaluate::EvaluateL(const CResourceFile& aResourceFile, const TInt aResourceId)

    {

    RArray<TUint32> array;

    CleanupClosePushL(array);

    CConditionEvaluateBase* expr = DoEvaluateLC(aResourceFile, aResourceId, array);

    TBool retVal = expr->EvaluateL();

    CleanupStack::PopAndDestroy(expr);

    CleanupStack::PopAndDestroy(&array);

    return retVal;

    }