51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
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/*=============================================================================
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Copyright (c) 2022 Denis Mikhailov
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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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#if !defined(BOOST_FUSION_IDENTITY_VIEW_HPP_INCLUDED)
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#define BOOST_FUSION_IDENTITY_VIEW_HPP_INCLUDED
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/view/transform_view.hpp>
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#include <boost/functional/identity.hpp>
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#include <boost/utility/result_of.hpp>
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namespace boost { namespace fusion {
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namespace detail {
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struct identity : boost::identity
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{
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};
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}
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}}
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namespace boost {
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template<typename T>
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struct result_of<fusion::detail::identity(T)>
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{
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typedef T type;
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};
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}
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#ifdef _MSC_VER
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# pragma warning(push)
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# pragma warning(disable: 4512) // assignment operator could not be generated.
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#endif
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namespace boost { namespace fusion {
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template<typename Sequence> struct identity_view
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: transform_view<Sequence, detail::identity>
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{
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typedef transform_view<Sequence, detail::identity> base_type;
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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identity_view(Sequence& in_seq)
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: base_type(in_seq, detail::identity()) {}
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};
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}}
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#ifdef _MSC_VER
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# pragma warning(pop)
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#endif
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#endif
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