ceph/src/boost/libs/intrusive/include/boost/intrusive/detail/is_stateful_value_traits.hpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 //
   3 // (C) Copyright Ion Gaztanaga  2009-2013.
   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/intrusive for documentation.
  10 //
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #ifndef BOOST_INTRUSIVE_DETAIL_IS_STATEFUL_VALUE_TRAITS_HPP
  14 #define BOOST_INTRUSIVE_DETAIL_IS_STATEFUL_VALUE_TRAITS_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 #if defined(_MSC_VER) && (_MSC_VER <= 1310)
  25
  26 #include <boost/intrusive/detail/mpl.hpp>
  27
  28 namespace boost {
  29 namespace intrusive {
  30 namespace detail {
  31
  32 template<class ValueTraits>
  33 struct is_stateful_value_traits
  34 {
  35    static const bool value = !detail::is_empty<ValueTraits>::value;
  36 };
  37
  38 }}}
  39
  40 #else
  41
  42 #include <boost/intrusive/detail/function_detector.hpp>
  43
  44 BOOST_INTRUSIVE_CREATE_FUNCTION_DETECTOR(to_node_ptr, boost_intrusive)
  45 BOOST_INTRUSIVE_CREATE_FUNCTION_DETECTOR(to_value_ptr, boost_intrusive)
  46
  47 namespace boost {
  48 namespace intrusive {
  49 namespace detail {
  50
  51 template<class ValueTraits>
  52 struct is_stateful_value_traits
  53 {
  54    typedef typename ValueTraits::node_ptr       node_ptr;
  55    typedef typename ValueTraits::pointer        pointer;
  56    typedef typename ValueTraits::value_type     value_type;
  57    typedef typename ValueTraits::const_node_ptr const_node_ptr;
  58    typedef typename ValueTraits::const_pointer  const_pointer;
  59
  60    typedef ValueTraits value_traits;
  61
  62    static const bool value =
  63       (boost::intrusive::function_detector::NonStaticFunction ==
  64          (BOOST_INTRUSIVE_DETECT_FUNCTION(ValueTraits, boost_intrusive, node_ptr, to_node_ptr, (value_type&) )))
  65       ||
  66       (boost::intrusive::function_detector::NonStaticFunction ==
  67          (BOOST_INTRUSIVE_DETECT_FUNCTION(ValueTraits, boost_intrusive, pointer, to_value_ptr, (node_ptr) )))
  68       ||
  69       (boost::intrusive::function_detector::NonStaticFunction ==
  70          (BOOST_INTRUSIVE_DETECT_FUNCTION(ValueTraits, boost_intrusive, const_node_ptr, to_node_ptr, (const value_type&) )))
  71       ||
  72       (boost::intrusive::function_detector::NonStaticFunction ==
  73          (BOOST_INTRUSIVE_DETECT_FUNCTION(ValueTraits, boost_intrusive, const_pointer, to_value_ptr, (const_node_ptr) )))
  74       ;
  75 };
  76
  77 }}}
  78
  79 #endif
  80
  81 #endif   //@ifndef BOOST_INTRUSIVE_DETAIL_IS_STATEFUL_VALUE_TRAITS_HPP