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/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
Copyright (c) 2005-2006 Dan Marsden
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/
#if !defined(BOOST_FUSION_STD_ARRAY_AT_IMPL_01062013_1700)
#define BOOST_FUSION_STD_ARRAY_AT_IMPL_01062013_1700
#include <boost/type_traits/is_const.hpp>
#include <boost/mpl/if.hpp>
namespace boost { namespace fusion {
struct std_array_tag;
namespace extension
{
template<typename T>
struct at_impl;
template<>
struct at_impl<std_array_tag>
{
template<typename Sequence, typename N>
struct apply
{
typedef typename mpl::if_<
is_const<Sequence>,
typename Sequence::const_reference,
typename Sequence::reference>::type type;
static type
call(Sequence& seq)
{
return seq[N::value];
}
};
};
}
}}
#endif
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