dust3d/thirdparty/cgal/CGAL-4.13/include/CGAL/Mesh_3/Has_features.h

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// Copyright (c) 2009 INRIA Sophia-Antipolis (France).
// Copyright (c) 2011 GeometryFactory Sarl (France)
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
// You can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL$
// $Id$
// SPDX-License-Identifier: GPL-3.0+
//
// Author(s) : Stéphane Tayeb, Laurent Rineau
#ifndef CGAL_MESH_3_HAS_FEATURES_H
#define CGAL_MESH_3_HAS_FEATURES_H
#include <CGAL/license/Mesh_3.h>
#include <boost/mpl/has_xxx.hpp>
#include <CGAL/tags.h>
namespace CGAL {
namespace Mesh_3 {
namespace internal {
// A type has_Has_features to check if type 'Has_features' is a nested
// type of any class
BOOST_MPL_HAS_XXX_TRAIT_DEF(Has_features)
template <typename Mesh_domain,
bool has_Has_features = has_Has_features<Mesh_domain>::value>
struct Has_features :
public CGAL::Boolean_tag<Mesh_domain::Has_features::value>
// when Mesh_domain has the nested type Has_features
{};
template <typename Mesh_domain>
struct Has_features<Mesh_domain, false> : public CGAL::Tag_false
// when Mesh_domain does not have the nested type Has_features
{};
} // end namespace internal
} // end namespace Mesh_3
} // end namespace CGAL
#endif // CGAL_MESH_3_HAS_FEATURES_H