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

   1
   2 #ifndef BOOST_MPL_AT_HPP_INCLUDED
   3 #define BOOST_MPL_AT_HPP_INCLUDED
   4
   5 // Copyright Aleksey Gurtovoy 2000-2004
   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/at_fwd.hpp>
  18 #include <boost/mpl/aux_/at_impl.hpp>
  19 #include <boost/mpl/long.hpp>
  20 #include <boost/mpl/sequence_tag.hpp>
  21 #include <boost/mpl/aux_/na_spec.hpp>
  22 #include <boost/mpl/aux_/lambda_support.hpp>
  23 #include <boost/mpl/aux_/nttp_decl.hpp>
  24
  25 namespace boost { namespace mpl {
  26
  27 template<
  28       typename BOOST_MPL_AUX_NA_PARAM(Sequence)
  29     , typename BOOST_MPL_AUX_NA_PARAM(N)
  30     >
  31 struct at
  32     : at_impl< typename sequence_tag<Sequence>::type >
  33         ::template apply< Sequence,N >
  34 {
  35     BOOST_MPL_AUX_LAMBDA_SUPPORT(2,at,(Sequence,N))
  36 };
  37
  38 template<
  39       typename Sequence
  40     , BOOST_MPL_AUX_NTTP_DECL(long, N)
  41     >
  42 struct at_c
  43     : at_impl< typename sequence_tag<Sequence>::type >
  44         ::template apply< Sequence,mpl::long_<N> >
  45 {
  46 };
  47
  48 BOOST_MPL_AUX_NA_SPEC(2, at)
  49
  50 }}
  51
  52 #endif // BOOST_MPL_AT_HPP_INCLUDED