author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 07:56:43 +0200 | |
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permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: ?Description |
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* |
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*/ |
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#ifndef __HUIOWNEDPOINTER_H__ |
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#define __HUIOWNEDPOINTER_H__ |
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/* Types. */ |
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/** Ownership options. */ |
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enum THuiOwnership |
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{ |
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EHuiDoesNotHaveOwnership, |
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EHuiHasOwnership |
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}; |
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/** |
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* Pointer that optionally has ownership. |
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*/ |
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template< class T > |
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class RHuiOwnedPointer |
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{ |
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public: |
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/* Constructors and destructor. */ |
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/** |
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* Default constructor. |
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*/ |
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RHuiOwnedPointer() |
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: iOwnership(EHuiDoesNotHaveOwnership), iPointer(0) |
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{ |
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} |
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RHuiOwnedPointer(T* aPointer, THuiOwnership aOwnership) |
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: iOwnership(aOwnership), iPointer(aPointer) |
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{ |
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} |
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/** |
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* Destructor. The object is deleted if the pointer has ownership. |
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*/ |
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virtual ~RHuiOwnedPointer() |
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{ |
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Close(); |
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} |
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/* Methods. */ |
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/** |
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* Reset the pointer. |
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*/ |
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inline void Close() |
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{ |
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if(iOwnership == EHuiHasOwnership) |
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{ |
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delete iPointer; |
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} |
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iPointer = 0; |
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iOwnership = EHuiDoesNotHaveOwnership; |
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} |
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inline operator T* () |
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{ |
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return iPointer; |
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} |
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inline operator const T* () const |
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{ |
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return iPointer; |
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} |
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inline T* operator -> () |
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{ |
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return iPointer; |
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} |
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inline const T* operator -> () const |
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{ |
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return iPointer; |
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} |
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inline T* Ptr() |
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{ |
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return iPointer; |
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} |
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inline const T* Ptr() const |
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{ |
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return iPointer; |
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} |
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inline T& Ref() |
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{ |
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return *iPointer; |
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} |
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inline const T& Ref() const |
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{ |
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return *iPointer; |
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} |
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inline T& NonConstRef() const |
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{ |
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return *iPointer; |
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} |
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inline void Set(T* aPointer, THuiOwnership aOwnership) |
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{ |
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// Delete the previous object. |
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if(iOwnership == EHuiHasOwnership) |
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{ |
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delete iPointer; |
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iPointer = 0; |
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} |
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iOwnership = aOwnership; |
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iPointer = aPointer; |
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} |
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inline THuiOwnership Ownership() const |
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{ |
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return iOwnership; |
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} |
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private: |
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/** |
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* Assignment prohibited. This isn't defined anywhere. |
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*/ |
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RHuiOwnedPointer& operator = (const RHuiOwnedPointer& aOwnedPointer); |
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private: |
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/** Have ownership of the object being pointed to. If the owned pointer |
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is deleted, the object will be deleted as well. */ |
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THuiOwnership iOwnership; |
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T* iPointer; |
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}; |
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#endif // __HUIOWNERSHIPPOINTER_H__ |