mirror of https://github.com/CGAL/cgal
56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
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// Copyright (c) 20012 GeometryFactory
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org).
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// You can redistribute it and/or modify it under the terms of the GNU
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// General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL: https://jtournois@geometryfactory.codebasehq.com/total/velocity.svn/Mesh_3-dec2011/CGAL/Prevent_deref.h $
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// $Id: Prevent_deref.h 100 2012-05-29 14:42:38Z afabri $
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//
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//
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// Author(s) : Philipp Moeller
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//
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//******************************************************************************
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// File Description :
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//******************************************************************************
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#ifndef CGAL_PREVENT_DEREF_H
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#define CGAL_PREVENT_DEREF_H
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#include <boost/iterator_adaptors.hpp>
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namespace CGAL {
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template<typename I>
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class Prevent_deref
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: public boost::iterator_adaptor<
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Prevent_deref<I>
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, I // base
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, I // value
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>
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{
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public:
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typedef typename Prevent_deref::iterator_adaptor_ IA;
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typedef typename IA::reference reference;
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Prevent_deref() : Prevent_deref::iterator_adaptor_() {};
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Prevent_deref(const I& i) : Prevent_deref::iterator_adaptor_(i) {};
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private:
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friend class boost::iterator_core_access;
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reference dereference() const { return const_cast<reference>(this->base_reference()); }
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};
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} // namespace CGAL
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#endif // CGAL_PREVENT_DEREF_H
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