62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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// The Loki Library
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// Copyright (c) 2006 Richard Sposato
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// Copyright (c) 2006 Peter Kümmel
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// Permission to use, copy, modify, distribute and sell this software for any
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// purpose is hereby granted without fee, provided that the above copyright
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// notice appear in all copies and that both that copyright notice and this
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// permission notice appear in supporting documentation.
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// The authors make no representations about the
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// suitability of this software for any purpose. It is provided "as is"
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// without express or implied warranty.
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////////////////////////////////////////////////////////////////////////////////
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#ifndef LOKI_CONST_POLICY_INC_
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#define LOKI_CONST_POLICY_INC_
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// $Id: ConstPolicy.h 769 2006-10-26 10:58:19Z syntheticpp $
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namespace Loki
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{
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////////////////////////////////////////////////////////////////////////////////
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/// @note These policy classes are used in LockingPtr and SmartPtr to define
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/// how const is propagated from the pointee.
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// \class DontPropagateConst
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///
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/// \ingroup ConstGroup
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/// Don't propagate constness of pointed or referred object.
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////////////////////////////////////////////////////////////////////////////////
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template< class T >
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struct DontPropagateConst
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{
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typedef T Type;
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};
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////////////////////////////////////////////////////////////////////////////////
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/// \class PropagateConst
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///
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/// \ingroup ConstGroup
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/// Propagate constness of pointed or referred object.
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////////////////////////////////////////////////////////////////////////////////
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template< class T >
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struct PropagateConst
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{
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typedef const T Type;
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};
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// default will not break existing code
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#ifndef LOKI_DEFAULT_CONSTNESS
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#define LOKI_DEFAULT_CONSTNESS ::Loki::DontPropagateConst
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#endif
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} // end namespace Loki
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#endif // end file guardian
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