63 lines
2 KiB
C
63 lines
2 KiB
C
|
////////////////////////////////////////////////////////////////////////////////
|
|||
|
|
// The Loki Library
|
|||
|
|
// Copyright (c) 2006 Richard Sposato
|
|||
|
|
// Copyright (c) 2006 Peter K<>mmel
|
|||
|
|
// Permission to use, copy, modify, distribute and sell this software for any
|
|||
|
|
// purpose is hereby granted without fee, provided that the above copyright
|
|||
|
|
// notice appear in all copies and that both that copyright notice and this
|
|||
|
|
// permission notice appear in supporting documentation.
|
|||
|
|
// The authors make no representations about the
|
|||
|
|
// suitability of this software for any purpose. It is provided "as is"
|
|||
|
|
// without express or implied warranty.
|
|||
|
|
////////////////////////////////////////////////////////////////////////////////
|
|||
|
|
|
|||
|
|
#ifndef LOKI_CONST_POLICY_INC_
|
|||
|
|
#define LOKI_CONST_POLICY_INC_
|
|||
|
|
|
|||
|
|
// $Header$
|
|||
|
|
|
|||
|
|
|
|||
|
|
namespace Loki
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
////////////////////////////////////////////////////////////////////////////////
|
|||
|
|
/// @note These policy classes are used in LockingPtr and SmartPtr to define
|
|||
|
|
/// how const is propagated from the pointee.
|
|||
|
|
////////////////////////////////////////////////////////////////////////////////
|
|||
|
|
|
|||
|
|
|
|||
|
|
////////////////////////////////////////////////////////////////////////////////
|
|||
|
|
/// \class DontPropagateConst
|
|||
|
|
///
|
|||
|
|
/// \ingroup ConstGroup
|
|||
|
|
/// Don't propagate constness of pointed or referred object.
|
|||
|
|
////////////////////////////////////////////////////////////////////////////////
|
|||
|
|
|
|||
|
|
template< class T >
|
|||
|
|
struct DontPropagateConst
|
|||
|
|
{
|
|||
|
|
typedef T Type;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
////////////////////////////////////////////////////////////////////////////////
|
|||
|
|
/// \class PropagateConst
|
|||
|
|
///
|
|||
|
|
/// \ingroup ConstGroup
|
|||
|
|
/// Propagate constness of pointed or referred object.
|
|||
|
|
////////////////////////////////////////////////////////////////////////////////
|
|||
|
|
|
|||
|
|
template< class T >
|
|||
|
|
struct PropagateConst
|
|||
|
|
{
|
|||
|
|
typedef const T Type;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
// default will not break existing code
|
|||
|
|
#ifndef LOKI_DEFAULT_CONSTNESS
|
|||
|
|
#define LOKI_DEFAULT_CONSTNESS DontPropagateConst
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
} // end namespace Loki
|
|||
|
|
|
|||
|
|
#endif // end file guardian
|