ceph/src/boost/libs/mpl/include/boost/mpl/always.hpp

   1
   2 #ifndef BOOST_MPL_ALWAYS_HPP_INCLUDED
   3 #define BOOST_MPL_ALWAYS_HPP_INCLUDED
   4
   5 // Copyright Aleksey Gurtovoy 2001-2004
   6 //
   7 // Distributed under the Boost Software License, Version 1.0.
   8 // (See accompanying file LICENSE_1_0.txt or copy at
   9 // http://www.boost.org/LICENSE_1_0.txt)
  10 //
  11 // See http://www.boost.org/libs/mpl for documentation.
  12
  13 // $Id$
  14 // $Date$
  15 // $Revision$
  16
  17 #include <boost/mpl/aux_/preprocessor/default_params.hpp>
  18 #include <boost/mpl/aux_/na.hpp>
  19 #include <boost/mpl/aux_/arity_spec.hpp>
  20
  21 namespace boost { namespace mpl {
  22
  23 template< typename Value > struct always
  24 {
  25     template<
  26         BOOST_MPL_PP_DEFAULT_PARAMS(BOOST_MPL_LIMIT_METAFUNCTION_ARITY, typename T, na)
  27         >
  28     struct apply
  29     {
  30         typedef Value type;
  31     };
  32 };
  33
  34 BOOST_MPL_AUX_ARITY_SPEC(0, always)
  35
  36 }}
  37
  38 #endif // BOOST_MPL_ALWAYS_HPP_INCLUDED