ceph/src/boost/boost/mpl/set/aux_/has_key_impl.hpp

   1
   2 #ifndef BOOST_MPL_SET_AUX_HAS_KEY_IMPL_HPP_INCLUDED
   3 #define BOOST_MPL_SET_AUX_HAS_KEY_IMPL_HPP_INCLUDED
   4
   5 // Copyright Aleksey Gurtovoy 2003-2004
   6 // Copyright David Abrahams 2003-2004
   7 //
   8 // Distributed under the Boost Software License, Version 1.0.
   9 // (See accompanying file LICENSE_1_0.txt or copy at
  10 // http://www.boost.org/LICENSE_1_0.txt)
  11 //
  12 // See http://www.boost.org/libs/mpl for documentation.
  13
  14 // $Id$
  15 // $Date$
  16 // $Revision$
  17
  18 #include <boost/mpl/set/aux_/tag.hpp>
  19 #include <boost/mpl/has_key_fwd.hpp>
  20 #include <boost/mpl/bool.hpp>
  21 #include <boost/mpl/aux_/overload_names.hpp>
  22 #include <boost/mpl/aux_/static_cast.hpp>
  23 #include <boost/mpl/aux_/yes_no.hpp>
  24 #include <boost/mpl/aux_/type_wrapper.hpp>
  25 #include <boost/mpl/aux_/config/workaround.hpp>
  26 #include <boost/mpl/aux_/config/static_constant.hpp>
  27
  28 namespace boost { namespace mpl {
  29
  30 template<>
  31 struct has_key_impl< aux::set_tag >
  32 {
  33     template< typename Set, typename T > struct apply
  34 #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1400)) \
  35     || BOOST_WORKAROUND(__EDG_VERSION__, <= 245)
  36     {
  37         BOOST_STATIC_CONSTANT(bool, value =
  38               ( sizeof( BOOST_MPL_AUX_OVERLOAD_CALL_IS_MASKED(
  39                     Set
  40                   , BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<T>*, 0)
  41                   ) ) == sizeof(aux::no_tag) )
  42             );
  43
  44         typedef bool_<value> type;
  45
  46 #else // ISO98 C++
  47         : bool_<
  48               ( sizeof( BOOST_MPL_AUX_OVERLOAD_CALL_IS_MASKED(
  49                     Set
  50                   , BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<T>*, 0)
  51                   ) ) == sizeof(aux::no_tag) )
  52             >
  53     {
  54 #endif
  55     };
  56 };
  57
  58 }}
  59
  60 #endif // BOOST_MPL_SET_AUX_HAS_KEY_IMPL_HPP_INCLUDED