ceph/src/boost/boost/container/detail/iterator.hpp

   1 //////////////////////////////////////////////////////////////////////////////
   2 //
   3 // (C) Copyright Ion Gaztanaga 2014-2014.
   4 //
   5 // Distributed under the Boost Software License, Version 1.0.
   6 // (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8 //
   9 // See http://www.boost.org/libs/container for documentation.
  10 //
  11 //////////////////////////////////////////////////////////////////////////////
  12
  13 #ifndef BOOST_CONTAINER_DETAIL_ITERATOR_HPP
  14 #define BOOST_CONTAINER_DETAIL_ITERATOR_HPP
  15
  16 #ifndef BOOST_CONFIG_HPP
  17 #  include <boost/config.hpp>
  18 #endif
  19
  20 #if defined(BOOST_HAS_PRAGMA_ONCE)
  21 #  pragma once
  22 #endif
  23
  24 #include <boost/intrusive/detail/iterator.hpp>
  25 #include <boost/move/utility_core.hpp>
  26 #include <boost/container/detail/mpl.hpp>
  27
  28 namespace boost {
  29 namespace container {
  30
  31 using ::boost::intrusive::iterator_traits;
  32 using ::boost::intrusive::iter_difference;
  33 using ::boost::intrusive::iter_category;
  34 using ::boost::intrusive::iter_value;
  35 using ::boost::intrusive::iter_size;
  36 using ::boost::intrusive::iterator_distance;
  37 using ::boost::intrusive::iterator_udistance;
  38 using ::boost::intrusive::iterator_advance;
  39 using ::boost::intrusive::iterator_uadvance;
  40 using ::boost::intrusive::iterator;
  41 using ::boost::intrusive::iterator_enable_if_tag;
  42 using ::boost::intrusive::iterator_disable_if_tag;
  43 using ::boost::intrusive::iterator_arrow_result;
  44
  45 template <class Container>
  46 class back_emplacer
  47 {
  48    private:
  49    Container& container;
  50
  51    public:
  52    typedef std::output_iterator_tag iterator_category;
  53    typedef void                     value_type;
  54    typedef void                     difference_type;
  55    typedef void                     pointer;
  56    typedef void                     reference;
  57
  58    back_emplacer(Container& x)
  59       : container(x)
  60    {}
  61
  62    template<class U>
  63    back_emplacer& operator=(BOOST_FWD_REF(U) value)
  64    {
  65       container.emplace_back(boost::forward<U>(value));
  66       return *this;
  67    }
  68    back_emplacer& operator*()    { return *this; }
  69    back_emplacer& operator++()   { return *this; }
  70    back_emplacer& operator++(int){ return *this; }
  71 };
  72
  73 #ifndef BOOST_CONTAINER_NO_CXX17_CTAD
  74
  75 template<class InputIterator>
  76 using it_based_non_const_first_type_t = typename dtl::remove_const<typename iterator_traits<InputIterator>::value_type::first_type>::type;
  77
  78 template<class InputIterator>
  79 using it_based_const_first_type_t = const typename dtl::remove_const<typename iterator_traits<InputIterator>::value_type::first_type>::type;
  80
  81 template<class InputIterator>
  82 using it_based_second_type_t = typename iterator_traits<InputIterator>::value_type::second_type;
  83
  84 template<class InputIterator>
  85 using it_based_value_type_t = typename iterator_traits<InputIterator>::value_type;
  86
  87 #endif
  88
  89 }  //namespace container {
  90 }  //namespace boost {
  91
  92 #endif   //#ifndef BOOST_CONTAINER_DETAIL_ITERATORS_HPP