forked from boostorg/fusion
2114bfca6c
Note 1: Forwarding functions are specified as a C++14 constexpr since std::forward is not a constexpr within C++11. Note 2: Though I'm not sure why it doesn't compile, some declarations are specified as a C++14 constexpr or non-constexpr. Note 3: Boost.Tuple adaptation and TR1-based tuple implementations are not constexpr.
41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
/*=============================================================================
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Copyright (c) 2010 Christopher Schmidt
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#ifndef BOOST_FUSION_ADAPTED_ARRAY_AT_IMPL_HPP
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#define BOOST_FUSION_ADAPTED_ARRAY_AT_IMPL_HPP
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#include <boost/fusion/support/config.hpp>
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#include <boost/type_traits/add_reference.hpp>
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#include <boost/type_traits/remove_extent.hpp>
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namespace boost { namespace fusion { namespace extension
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{
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template<typename>
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struct at_impl;
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template<>
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struct at_impl<po_array_tag>
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{
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template<typename Seq, typename N>
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struct apply
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{
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typedef typename
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add_reference<typename remove_extent<Seq>::type>::type
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type;
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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static type
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call(Seq& seq)
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{
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return seq[N::value];
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}
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};
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};
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}}}
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#endif
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