value_type.hpp 1.1 KB

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  1. #ifndef BOOST_MPL_VALUE_TYPE_HPP_INCLUDED
  2. #define BOOST_MPL_VALUE_TYPE_HPP_INCLUDED
  3. // Copyright Aleksey Gurtovoy 2003-2004
  4. // Copyright David Abrahams 2003-2004
  5. //
  6. // Distributed under the Boost Software License, Version 1.0.
  7. // (See accompanying file LICENSE_1_0.txt or copy at
  8. // http://www.boost.org/LICENSE_1_0.txt)
  9. //
  10. // See http://www.boost.org/libs/mpl for documentation.
  11. // $Id$
  12. // $Date$
  13. // $Revision$
  14. #include <boost/mpl/value_type_fwd.hpp>
  15. #include <boost/mpl/sequence_tag.hpp>
  16. #include <boost/mpl/apply_wrap.hpp>
  17. #include <boost/mpl/aux_/na_spec.hpp>
  18. #include <boost/mpl/aux_/lambda_support.hpp>
  19. namespace boost { namespace mpl {
  20. template<
  21. typename BOOST_MPL_AUX_NA_PARAM(AssociativeSequence)
  22. , typename BOOST_MPL_AUX_NA_PARAM(T)
  23. >
  24. struct value_type
  25. : apply_wrap2<
  26. value_type_impl< typename sequence_tag<AssociativeSequence>::type >
  27. , AssociativeSequence, T >
  28. {
  29. BOOST_MPL_AUX_LAMBDA_SUPPORT(2,value_type,(AssociativeSequence,T))
  30. };
  31. BOOST_MPL_AUX_NA_SPEC(2, value_type)
  32. }}
  33. #endif // BOOST_MPL_VALUE_TYPE_HPP_INCLUDED