d2ca522cca
git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@1115 7ec92016-0320-0410-acc4-a06ded1c099a
74 lines
2.6 KiB
C++
74 lines
2.6 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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//
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// Code covered by the MIT License
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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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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// $Id$
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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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