mgcsmartpointer.inl

《3D游戏引擎设计》的源码

// Magic Software, Inc.
// http://www.magic-software.com
// Copyright (c) 2000, All Rights Reserved
//
// Source code from Magic Software is supplied under the terms of a license
// agreement and may not be copied or disclosed except in accordance with the
// terms of that agreement.  The various license agreements may be found at
// the Magic Software web site.  This file is subject to the license
//
// RESTRICTED USE SOURCE CODE
// http://www.magic-software.com/License/restricted.pdf

//---------------------------------------------------------------------------
template <class T>
inline MgcPointer<T>::MgcPointer (T* pkObject)
{
    m_pkObject = pkObject;
    if ( m_pkObject )
        m_pkObject->IncrementReferences();
}
//---------------------------------------------------------------------------
template <class T>
inline MgcPointer<T>::MgcPointer (const MgcPointer& rkPointer)
{
    m_pkObject = rkPointer.m_pkObject;
    if ( m_pkObject )
        m_pkObject->IncrementReferences();
}
//---------------------------------------------------------------------------
template <class T>
inline MgcPointer<T>::~MgcPointer ()
{
    if ( m_pkObject )
        m_pkObject->DecrementReferences();
}
//---------------------------------------------------------------------------
template <class T>
inline MgcPointer<T>::operator T* () const
{
    return m_pkObject;
}
//---------------------------------------------------------------------------
template <class T>
inline T& MgcPointer<T>::operator* () const
{
    return *m_pkObject;
}
//---------------------------------------------------------------------------
template <class T>
inline T* MgcPointer<T>::operator-> () const
{
    return m_pkObject;
}
//---------------------------------------------------------------------------
template <class T>
inline MgcPointer<T>& MgcPointer<T>::operator= (const MgcPointer& rkPointer)
{
    if ( m_pkObject != rkPointer.m_pkObject )
    {
        if ( m_pkObject )
            m_pkObject->DecrementReferences();
        m_pkObject = rkPointer.m_pkObject;
        if ( m_pkObject )
            m_pkObject->IncrementReferences();
    }
    return *this;
}
//---------------------------------------------------------------------------
template <class T>
inline MgcPointer<T>& MgcPointer<T>::operator= (T* pkObject)
{
    if ( m_pkObject != pkObject )
    {
        if ( m_pkObject )
            m_pkObject->DecrementReferences();
        m_pkObject = pkObject;
        if ( m_pkObject )
            m_pkObject->IncrementReferences();
    }
    return *this;
}
//---------------------------------------------------------------------------
template <class T>
inline bool MgcPointer<T>::operator== (T* pkObject) const
{
    return ( m_pkObject == pkObject );
}
//---------------------------------------------------------------------------
template <class T>
inline bool MgcPointer<T>::operator!= (T* pkObject) const
{
    return ( m_pkObject != pkObject );
}
//---------------------------------------------------------------------------
template <class T>
inline bool MgcPointer<T>::operator== (const MgcPointer& rkPointer) const
{
    return ( m_pkObject == rkPointer.m_pkObject );
}
//---------------------------------------------------------------------------
template <class T>
inline bool MgcPointer<T>::operator!= (const MgcPointer& rkPointer) const
{
    return ( m_pkObject != rkPointer.m_pkObject );
}
//---------------------------------------------------------------------------