///////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2002-2016, Open Design Alliance (the "Alliance").
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// All rights reserved.
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//
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// This software and its documentation and related materials are owned by
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// the Alliance. The software may only be incorporated into application
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// programs owned by members of the Alliance, subject to a signed
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// Membership Agreement and Supplemental Software License Agreement with the
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// Alliance. The structure and organization of this software are the valuable
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// trade secrets of the Alliance and its suppliers. The software is also
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// protected by copyright law and international treaty provisions. Application
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// programs incorporating this software must include the following statement
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// with their copyright notices:
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//
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// This application incorporates Teigha(R) software pursuant to a license
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// agreement with Open Design Alliance.
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// Teigha(R) Copyright (C) 2002-2016 by Open Design Alliance.
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// All rights reserved.
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//
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// By use of this software, its documentation or related materials, you
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// acknowledge and accept the above terms.
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _ODABASEOBJECTPOINTER_INCLUDED_
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#define _ODABASEOBJECTPOINTER_INCLUDED_
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#include "TD_PackPush.h"
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class OdRxObject;
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/** \details
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<group Other_Classes>
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This class is the base class for typified smart pointers.
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\sa
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TD_Db
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\remarks
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Smart pointers relieve the programmer of having to determine when objects are no longer needed, or having to delete
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them at that time.
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Each object referenced by a SmartPointer (henceforth 'referenced object')
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maintains a reference count; i.e., how many SmartPointers are referencing it.
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When the reference count reaches zero, the referenced object is deleted.
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\sa
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<link smart_pointers_overview.html, Overview of Smart Pointer Classes>
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*/
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class FIRSTDLL_EXPORT OdBaseObjectPtr
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{
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protected:
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OdRxObject* m_pObject;
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OdBaseObjectPtr() : m_pObject(0) {}
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explicit OdBaseObjectPtr(const OdRxObject *pSource) : m_pObject(const_cast<OdRxObject*>(pSource)) {}
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public:
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/** \details
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Returns the raw pointer to the referenced object.
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\remarks
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This class maintains the reference to the referenced object.
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The reference counter of the referenced object is not changed.
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*/
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OdRxObject* get() const { return m_pObject; }
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/** \details
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Returns true if and only if the smart pointer stores a NULL.
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*/
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bool isNull() const { return m_pObject == 0; }
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};
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#include "TD_PackPop.h"
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#endif // _ODABASEOBJECTPOINTER_INCLUDED_
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