ceph/src/boost/libs/range/include/boost/range/mutable_iterator.hpp

   1 // Boost.Range library
   2 //
   3 //  Copyright Thorsten Ottosen 2003-2004. Use, modification and
   4 //  distribution is subject to the Boost Software License, Version
   5 //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
   6 //  http://www.boost.org/LICENSE_1_0.txt)
   7 //
   8 // For more information, see http://www.boost.org/libs/range/
   9 //
  10
  11 #ifndef BOOST_RANGE_MUTABLE_ITERATOR_HPP
  12 #define BOOST_RANGE_MUTABLE_ITERATOR_HPP
  13
  14 #if defined(_MSC_VER)
  15 # pragma once
  16 #endif
  17
  18 #include <boost/range/config.hpp>
  19
  20 #include <boost/range/range_fwd.hpp>
  21 #include <boost/range/detail/extract_optional_type.hpp>
  22 #include <boost/type_traits/remove_reference.hpp>
  23 #include <boost/iterator/iterator_traits.hpp>
  24 #include <cstddef>
  25 #include <utility>
  26
  27 namespace boost
  28 {
  29
  30     //////////////////////////////////////////////////////////////////////////
  31     // default
  32     //////////////////////////////////////////////////////////////////////////
  33
  34     namespace range_detail
  35     {
  36
  37 BOOST_RANGE_EXTRACT_OPTIONAL_TYPE( iterator )
  38
  39 template< typename C >
  40 struct range_mutable_iterator
  41         : range_detail::extract_iterator<
  42             BOOST_DEDUCED_TYPENAME remove_reference<C>::type>
  43 {};
  44
  45 //////////////////////////////////////////////////////////////////////////
  46 // pair
  47 //////////////////////////////////////////////////////////////////////////
  48
  49 template< typename Iterator >
  50 struct range_mutable_iterator< std::pair<Iterator,Iterator> >
  51 {
  52     typedef Iterator type;
  53 };
  54
  55 //////////////////////////////////////////////////////////////////////////
  56 // array
  57 //////////////////////////////////////////////////////////////////////////
  58
  59 template< typename T, std::size_t sz >
  60 struct range_mutable_iterator< T[sz] >
  61 {
  62     typedef T* type;
  63 };
  64
  65     } // namespace range_detail
  66
  67 template<typename C, typename Enabler=void>
  68 struct range_mutable_iterator
  69         : range_detail::range_mutable_iterator<
  70             BOOST_DEDUCED_TYPENAME remove_reference<C>::type
  71         >
  72 {
  73 };
  74
  75 } // namespace boost
  76
  77 #include <boost/range/detail/msvc_has_iterator_workaround.hpp>
  78
  79 #endif