Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2001-2011 Joel de Guzman
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying 
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: #if !defined(FUSION_FRONT_09162005_0343)
Chris@16: #define FUSION_FRONT_09162005_0343
Chris@16: 
Chris@101: #include <boost/fusion/support/config.hpp>
Chris@16: #include <boost/fusion/sequence/intrinsic_fwd.hpp>
Chris@16: #include <boost/fusion/sequence/intrinsic/begin.hpp>
Chris@16: #include <boost/fusion/iterator/deref.hpp>
Chris@16: #include <boost/mpl/bool.hpp>
Chris@16: 
Chris@16: namespace boost { namespace fusion
Chris@16: {
Chris@16:     struct fusion_sequence_tag;
Chris@16: 
Chris@16:     namespace result_of
Chris@16:     {
Chris@16:         template <typename Sequence>
Chris@16:         struct front
Chris@16:             : result_of::deref<typename result_of::begin<Sequence>::type>
Chris@16:         {};
Chris@16:     }
Chris@16:     
Chris@16:     template <typename Sequence>
Chris@101:     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:     inline typename result_of::front<Sequence>::type
Chris@16:     front(Sequence& seq)
Chris@16:     {
Chris@16:         return *fusion::begin(seq);
Chris@16:     }
Chris@16: 
Chris@16:     template <typename Sequence>
Chris@101:     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:     inline typename result_of::front<Sequence const>::type
Chris@16:     front(Sequence const& seq)
Chris@16:     {
Chris@16:         return *fusion::begin(seq);
Chris@16:     }
Chris@16: }}
Chris@16: 
Chris@16: #endif