mirror of https://github.com/CGAL/cgal
119 lines
2.6 KiB
C++
119 lines
2.6 KiB
C++
// Copyright (c) 2009 INRIA Sophia-Antipolis (France).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; version 2.1 of the License.
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// See the file LICENSE.LGPL distributed with CGAL.
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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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// $URL$
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// $Id$
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//
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// Author(s) : Sebastien Loriot, Sylvain Pion
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#ifndef CGAL_TUPLE_H
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#define CGAL_TUPLE_H
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// A wrapper around C++0x, TR1 or Boost tuple<>.
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// Together with the Is_in_tuple<> tool.
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#include <CGAL/config.h>
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#ifndef CGAL_CFG_NO_CPP0X_TUPLE
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# include <tuple>
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#elif !defined CGAL_CFG_NO_TR1_TUPLE
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# include <tr1/tuple>
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#else
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# include <boost/tuple/tuple.hpp>
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#endif
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CGAL_BEGIN_NAMESPACE
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namespace cpp0x {
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#ifndef CGAL_CFG_NO_CPP0X_TUPLE
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using std::tuple;
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using std::make_tuple;
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using std::tie;
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using std::get;
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#elif !defined CGAL_CFG_NO_TR1_TUPLE
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using std::tr1::tuple;
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using std::tr1::make_tuple;
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using std::tr1::tie;
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using std::tr1::get;
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#else
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using boost::tuple;
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using boost::make_tuple;
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using boost::tie;
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using boost::get;
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#endif
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} // cpp0x
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#ifndef CGAL_CFG_NO_CPP0X_VARIADIC_TEMPLATES
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// Tool to test whether a type V is among the types of a tuple<...> = T.
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template <typename V, typename T>
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struct Is_in_tuple;
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template <typename V, typename T0, typename... T>
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struct Is_in_tuple <V, cpp0x::tuple<T0, T...> >
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{
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static const bool value = Is_in_tuple<V, cpp0x::tuple<T...> >::value;
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};
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template <typename V, typename... T>
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struct Is_in_tuple <V, cpp0x::tuple<V, T...> >
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{
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static const bool value = true;
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};
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template <typename V>
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struct Is_in_tuple <V, cpp0x::tuple<> >
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{
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static const bool value = false;
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};
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#else
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// Non-variadic version
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template <typename V, typename T>
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struct Is_in_tuple;
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template <typename V, typename T0, typename T1>
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struct Is_in_tuple <V, cpp0x::tuple<T0, T1> >
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{
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static const bool value = Is_in_tuple<V, cpp0x::tuple<T1> >::value;
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};
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template <typename V, typename T1>
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struct Is_in_tuple <V, cpp0x::tuple<V,T1> >
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{
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static const bool value = true;
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};
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template <typename V>
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struct Is_in_tuple <V, cpp0x::tuple<V> >
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{
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static const bool value = true;
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};
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template <typename V, typename T1>
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struct Is_in_tuple <V, cpp0x::tuple<T1> >
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{
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static const bool value = false;
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};
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#endif
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CGAL_END_NAMESPACE
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#endif // CGAL_TUPLE_H
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