Inventor/SbPImpl.h

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**=======================================================================*/

#ifndef HIDDEN_FROM_DOC

#ifndef _SB_PIMPL_MACRO_H_
#define _SB_PIMPL_MACRO_H_


// Define supported C++ level for PIMPL design, not that
// C++ 11 is fully supported if __cplusplus >= 201103L.
// This value defines the way we store the implementation class:
// "0", using SoRef
// "1", using std::auto_ptr
// "2", using std::unique_ptr (c++ 11 should be at least partially supported)
#define OIV_PIMPL_CXX11 0

#if !(OIV_PIMPL_CXX11)
#include <Inventor/misc/SoRefCounter.h>
#else
#include <memory>
#endif

template<typename PublicType>
#if !(OIV_PIMPL_CXX11)
class SbPImpl : public SoRefCounter
#else
class SbPImpl
#endif
{
public:

  SbPImpl( PublicType* p ) : m_public(p) {}

  virtual ~SbPImpl() {}

  template<typename SuperPublicType>
  SuperPublicType* getPublic () const { return static_cast<SuperPublicType*>(m_public); }

private:

  // public node
  PublicType* m_public;

private:

  // force using constructor with parameter
  SbPImpl () {}
};


#define SO_PIMPL_PUBLIC_DECLARATION(Class) \
class Class##Impl;

#define SO_PIMPL_BASE_PUBLIC_DECLARATION(Class) SO_PIMPL_PUBLIC_DECLARATION(Class)

#define SO_PIMPL_PUBLIC_HEADER(Class) \
SoINTERNAL private:\
  friend class Class##Impl;\

  Class(Class##Impl *impl);

#if OIV_PIMPL_CXX11 == 0
#define SO_PIMPL_BASE_PUBLIC_HEADER(Class) \
SO_PIMPL_PUBLIC_HEADER(Class) \
  SoRef< SbPImpl< Class > > m_impl; \

  template<typename ImplType> \
  ImplType* getImpl() const { \
    assert(m_impl->getPublic< Class >() == this); \
    return static_cast< ImplType *>(m_impl.ptr()); \
  } \

  void setImpl( SbPImpl< Class >* impl ) { m_impl = impl; }
#elif OIV_PIMPL_CXX11 == 1
#define SO_PIMPL_BASE_PUBLIC_HEADER(Class) \
SO_PIMPL_PUBLIC_HEADER(Class) \
  std::auto_ptr< SbPImpl< Class > > m_impl; \

  template<typename ImplType> \
  ImplType* getImpl() const { \
    assert(m_impl->getPublic< Class >() == this); \
    return static_cast< ImplType *>(m_impl.ptr()); \
  } \

  void setImpl ( SbPImpl< Class >* impl ) { m_impl.reset(impl); }
#else
#define SO_PIMPL_BASE_PUBLIC_HEADER(Class) \
SO_PIMPL_PUBLIC_HEADER(Class);\
  std::unique_ptr< SbPImpl< Class > > m_impl; \

  template<typename ImplType> \
  ImplType* getImpl() const { \
    assert(m_impl->getPublic< Class >() == this); \
    return static_cast< ImplType *>(m_impl.ptr()); \
  } \

  void setImpl( SbPImpl< Class >* impl ) { m_impl.reset( impl ); }
#endif

#endif //_SB_PIMPL_MACRO_H_

#endif // HIDDEN_FROM_DOC

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Open Inventor Toolkit reference manual, generated on 12 Feb 2024
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