82 lines
3.0 KiB
Plaintext
82 lines
3.0 KiB
Plaintext
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/*=============================================================================
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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_FILTER_VIEW_ITERATOR_05062005_0849)
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#define FUSION_FILTER_VIEW_ITERATOR_05062005_0849
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/iterator/mpl/convert_iterator.hpp>
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#include <boost/fusion/adapted/mpl/mpl_iterator.hpp>
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#include <boost/fusion/iterator/value_of.hpp>
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#include <boost/fusion/support/iterator_base.hpp>
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#include <boost/fusion/algorithm/query/detail/find_if.hpp>
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#include <boost/mpl/lambda.hpp>
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#include <boost/mpl/quote.hpp>
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#include <boost/mpl/bind.hpp>
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#include <boost/mpl/placeholders.hpp>
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#include <boost/fusion/view/filter_view/detail/deref_impl.hpp>
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#include <boost/fusion/view/filter_view/detail/next_impl.hpp>
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#include <boost/fusion/view/filter_view/detail/value_of_impl.hpp>
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#include <boost/fusion/view/filter_view/detail/equal_to_impl.hpp>
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#include <boost/fusion/view/filter_view/detail/deref_data_impl.hpp>
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#include <boost/fusion/view/filter_view/detail/value_of_data_impl.hpp>
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#include <boost/fusion/view/filter_view/detail/key_of_impl.hpp>
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namespace boost { namespace fusion
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{
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struct filter_view_iterator_tag;
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struct forward_traversal_tag;
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template <typename Category, typename First, typename Last, typename Pred>
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struct filter_iterator : iterator_base<filter_iterator<Category, First, Last, Pred> >
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{
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typedef convert_iterator<First> first_converter;
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typedef typename first_converter::type first_iter;
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typedef convert_iterator<Last> last_converter;
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typedef typename last_converter::type last_iter;
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typedef filter_view_iterator_tag fusion_tag;
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typedef Category category;
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typedef
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detail::static_find_if<
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first_iter
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, last_iter
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, mpl::bind1<
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typename mpl::lambda<Pred>::type
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, mpl::bind1<mpl::quote1<result_of::value_of>,mpl::_1>
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>
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>
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filter;
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typedef typename filter::type first_type;
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typedef last_iter last_type;
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typedef Pred pred_type;
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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filter_iterator(First const& in_first)
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: first(filter::iter_call(first_converter::call(in_first))) {}
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first_type first;
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private:
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// silence MSVC warning C4512: assignment operator could not be generated
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filter_iterator& operator= (filter_iterator const&);
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};
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}}
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#ifdef BOOST_FUSION_WORKAROUND_FOR_LWG_2408
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namespace std
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{
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template <typename Category, typename First, typename Last, typename Pred>
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struct iterator_traits< ::boost::fusion::filter_iterator<Category, First, Last, Pred> >
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{ };
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}
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#endif
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#endif
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