boost/mpl/value_type.hpp

0001
0002 #ifndef BOOST_MPL_VALUE_TYPE_HPP_INCLUDED
0003 #define BOOST_MPL_VALUE_TYPE_HPP_INCLUDED
0004
0005 // Copyright Aleksey Gurtovoy 2003-2004
0006 // Copyright David Abrahams 2003-2004
0007 //
0008 // Distributed under the Boost Software License, Version 1.0.
0009 // (See accompanying file LICENSE_1_0.txt or copy at
0010 // http://www.boost.org/LICENSE_1_0.txt)
0011 //
0012 // See http://www.boost.org/libs/mpl for documentation.
0013
0014 // $Id$
0015 // $Date$
0016 // $Revision$
0017
0018 #include <boost/mpl/value_type_fwd.hpp>
0019 #include <boost/mpl/sequence_tag.hpp>
0020 #include <boost/mpl/apply_wrap.hpp>
0021 #include <boost/mpl/aux_/na_spec.hpp>
0022 #include <boost/mpl/aux_/lambda_support.hpp>
0023
0024 namespace boost { namespace mpl {
0025
0026 template<
0027       typename BOOST_MPL_AUX_NA_PARAM(AssociativeSequence)
0028     , typename BOOST_MPL_AUX_NA_PARAM(T)
0029     >
0030 struct value_type
0031     : apply_wrap2<
0032           value_type_impl< typename sequence_tag<AssociativeSequence>::type >
0033         , AssociativeSequence, T >
0034 {
0035     BOOST_MPL_AUX_LAMBDA_SUPPORT(2,value_type,(AssociativeSequence,T))
0036 };
0037
0038 BOOST_MPL_AUX_NA_SPEC(2, value_type)
0039
0040 }}
0041
0042 #endif // BOOST_MPL_VALUE_TYPE_HPP_INCLUDED