ceph/src/boost/boost/fusion/view/transform_view/transform_view_iterator.hpp

   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
  39         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
  66         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