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51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2011 Joel de Guzman
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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(FUSION_DEREF_IMPL_07202005_0851)
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#define FUSION_DEREF_IMPL_07202005_0851
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/iterator/deref.hpp>
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#include <boost/fusion/iterator/prior.hpp>
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namespace boost { namespace fusion
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{
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struct reverse_view_iterator_tag;
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namespace extension
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{
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template <typename Tag>
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struct deref_impl;
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template <>
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struct deref_impl<reverse_view_iterator_tag>
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{
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template <typename Iterator>
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struct apply
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{
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typedef typename
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result_of::deref<
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typename result_of::prior<
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typename Iterator::first_type
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>::type
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>::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(Iterator const& i)
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{
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return *fusion::prior(i.first);
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}
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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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