///////////////////////////////////////////////////////////////////////////////
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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 __TPTR_H__
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#define __TPTR_H__
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/** \details
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<group Other_Classes>
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*/
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template <typename TObj>
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class TObjRelease
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{
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public:
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static void addRef(TObj* pObj) { if (pObj) pObj->addRef(); }
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static void release(TObj* pObj) { if (pObj) pObj->release(); }
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};
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/** \details
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<group Other_Classes>
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*/
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template <typename TObj>
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class TObjDelete
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{
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public:
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static void addRef(TObj* pObj) {}
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static void release(TObj* pObj) { delete pObj; }
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};
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/** \details
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<group Other_Classes>
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*/
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template <typename TObj>
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class TObjDeleteArray
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{
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public:
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static void addRef(TObj* pObj) {}
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static void release(TObj* pObj) { delete []pObj; }
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};
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/** \details
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<group Other_Classes>
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*/
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//template <typename TObj>
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//class TObjFree
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//{
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// public:
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// static void addRef(TObj* pObj) {}
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// static void release(TObj* pObj) { ::odrxFree(pObj); }
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//};
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/** \details
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<group Other_Classes>
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*/
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template <typename TObj, typename THelper = TObjRelease<TObj> >
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class TPtr
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{
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protected:
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TObj *m_obj;
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TPtr &replace(TObj* pObj)
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{
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THelper::addRef(pObj);
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THelper::release(m_obj);
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m_obj = pObj;
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return *this;
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}
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public:
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TPtr() : m_obj (NULL) {}
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TPtr(const TPtr& ref) : m_obj (ref.m_obj)
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{
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THelper::addRef(m_obj);
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}
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TPtr(const TObj* pObj, bool bAttach = false) : m_obj(const_cast<TObj*>(pObj))
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{
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if (!bAttach)
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THelper::addRef(m_obj);
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}
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~TPtr()
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{
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THelper::release(m_obj);
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}
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TPtr &operator =(TObj *pObj)
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{
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return replace (pObj);
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}
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TPtr &operator =(const TPtr& ref)
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{
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return replace (ref.m_obj);
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}
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const TObj* get() const
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{
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return m_obj;
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}
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TObj* get()
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{
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return m_obj;
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}
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TObj* operator ->()
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{
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ODA_ASSERT(m_obj);
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return m_obj;
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}
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const TObj* operator ->() const
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{
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ODA_ASSERT(m_obj);
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return m_obj;
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}
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operator TObj *()
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{
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return m_obj;
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}
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operator const TObj *() const
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{
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return m_obj;
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}
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TObj** getPtr()
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{
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THelper::release(m_obj);
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m_obj = NULL;
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return &m_obj; // return reference to NULL pointer
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}
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TObj *detach ()
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{
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TObj *pObj = m_obj;
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m_obj = NULL;
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return pObj;
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}
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TObj* attach(TObj* obj)
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{
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THelper::release(m_obj);
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m_obj = obj;
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return m_obj;
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}
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};
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#endif // __TPTR_H__
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