1 /*============================================================================= 2 Copyright (c) 2001-2011 Joel de Guzman 3 4 Distributed under the Boost Software License, Version 1.0. (See accompanying 5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 6 ==============================================================================*/ 7 #if !defined(FUSION_TRANSFORM_VIEW_ITERATOR_07162005_1033) 8 #define FUSION_TRANSFORM_VIEW_ITERATOR_07162005_1033 9 10 #include <boost/fusion/support/config.hpp> 11 #include <boost/fusion/support/iterator_base.hpp> 12 #include <boost/fusion/support/category_of.hpp> 13 #include <boost/fusion/iterator/mpl/convert_iterator.hpp> 14 #include <boost/fusion/adapted/mpl/mpl_iterator.hpp> 15 #include <boost/fusion/view/transform_view/detail/deref_impl.hpp> 16 #include <boost/fusion/view/transform_view/detail/next_impl.hpp> 17 #include <boost/fusion/view/transform_view/detail/prior_impl.hpp> 18 #include <boost/fusion/view/transform_view/detail/value_of_impl.hpp> 19 #include <boost/fusion/view/transform_view/detail/advance_impl.hpp> 20 #include <boost/fusion/view/transform_view/detail/distance_impl.hpp> 21 #include <boost/fusion/view/transform_view/detail/equal_to_impl.hpp> 22 23 namespace boost { namespace fusion 24 { 25 // Unary Version 26 struct transform_view_iterator_tag; 27 28 template <typename First, typename F> 29 struct transform_view_iterator 30 : iterator_base<transform_view_iterator<First, F> > 31 { 32 typedef transform_view_iterator_tag fusion_tag; 33 typedef convert_iterator<First> converter; 34 typedef typename converter::type first_type; 35 typedef typename traits::category_of<first_type>::type category; 36 typedef F transform_type; 37 38 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED transform_view_iteratorboost::fusion::transform_view_iterator39 transform_view_iterator(First const& in_first, F const& in_f) 40 : first(converter::call(in_first)), f(in_f) {} 41 42 first_type first; 43 transform_type f; 44 45 private: 46 // silence MSVC warning C4512: assignment operator could not be generated 47 transform_view_iterator& operator= (transform_view_iterator const&); 48 }; 49 50 // Binary Version 51 struct transform_view_iterator2_tag; 52 53 template <typename First1, typename First2, typename F> 54 struct transform_view_iterator2 55 : iterator_base<transform_view_iterator2<First1, First2, F> > 56 { 57 typedef transform_view_iterator2_tag fusion_tag; 58 typedef convert_iterator<First1> converter1; 59 typedef convert_iterator<First2> converter2; 60 typedef typename converter1::type first1_type; 61 typedef typename converter2::type first2_type; 62 typedef typename traits::category_of<first1_type>::type category; 63 typedef F transform_type; 64 65 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED transform_view_iterator2boost::fusion::transform_view_iterator266 transform_view_iterator2(First1 const& in_first1, First2 const& in_first2, F const& in_f) 67 : first1(converter1::call(in_first1)), first2(converter2::call(in_first2)), f(in_f) {} 68 69 first1_type first1; 70 first2_type first2; 71 transform_type f; 72 73 private: 74 // silence MSVC warning C4512: assignment operator could not be generated 75 transform_view_iterator2& operator= (transform_view_iterator2 const&); 76 }; 77 }} 78 79 #ifdef BOOST_FUSION_WORKAROUND_FOR_LWG_2408 80 namespace std 81 { 82 template <typename First, typename F> 83 struct iterator_traits< ::boost::fusion::transform_view_iterator<First, F> > 84 { }; 85 template <typename First1, typename First2, typename F> 86 struct iterator_traits< ::boost::fusion::transform_view_iterator2<First1, First2, F> > 87 { }; 88 } 89 #endif 90 91 #endif 92 93