ceph/src/boost/libs/multi_index/include/boost/multi_index/detail/node_type.hpp

   1 /* Copyright 2003-2013 Joaquin M Lopez Munoz.
   2  * Distributed under the Boost Software License, Version 1.0.
   3  * (See accompanying file LICENSE_1_0.txt or copy at
   4  * http://www.boost.org/LICENSE_1_0.txt)
   5  *
   6  * See http://www.boost.org/libs/multi_index for library home page.
   7  */
   8
   9 #ifndef BOOST_MULTI_INDEX_DETAIL_NODE_TYPE_HPP
  10 #define BOOST_MULTI_INDEX_DETAIL_NODE_TYPE_HPP
  11
  12 #if defined(_MSC_VER)
  13 #pragma once
  14 #endif
  15
  16 #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
  17 #include <boost/detail/workaround.hpp>
  18 #include <boost/mpl/bind.hpp>
  19 #include <boost/mpl/reverse_iter_fold.hpp>
  20 #include <boost/mpl/deref.hpp>
  21 #include <boost/multi_index_container_fwd.hpp>
  22 #include <boost/multi_index/detail/header_holder.hpp>
  23 #include <boost/multi_index/detail/index_node_base.hpp>
  24 #include <boost/multi_index/detail/is_index_list.hpp>
  25 #include <boost/static_assert.hpp>
  26
  27 namespace boost{
  28
  29 namespace multi_index{
  30
  31 namespace detail{
  32
  33 /* MPL machinery to construct the internal node type associated to an
  34  * index list.
  35  */
  36
  37 struct index_node_applier
  38 {
  39   template<typename IndexSpecifierIterator,typename Super>
  40   struct apply
  41   {
  42     typedef typename mpl::deref<IndexSpecifierIterator>::type index_specifier;
  43     typedef typename index_specifier::
  44       BOOST_NESTED_TEMPLATE node_class<Super>::type type;
  45   };
  46 };
  47
  48 template<typename Value,typename IndexSpecifierList,typename Allocator>
  49 struct multi_index_node_type
  50 {
  51   BOOST_STATIC_ASSERT(detail::is_index_list<IndexSpecifierList>::value);
  52
  53   typedef typename mpl::reverse_iter_fold<
  54     IndexSpecifierList,
  55     index_node_base<Value,Allocator>,
  56     mpl::bind2<index_node_applier,mpl::_2,mpl::_1>
  57   >::type type;
  58 };
  59
  60 } /* namespace multi_index::detail */
  61
  62 } /* namespace multi_index */
  63
  64 } /* namespace boost */
  65
  66 #endif