Chris@16: 
Chris@16: #if !defined(BOOST_PP_IS_ITERATING)
Chris@16: 
Chris@16: ///// header body
Chris@16: 
Chris@16: #ifndef BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED
Chris@16: #define BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED
Chris@16: 
Chris@16: // Copyright Aleksey Gurtovoy 2002-2004
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. 
Chris@16: // (See accompanying file LICENSE_1_0.txt or copy at 
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org/libs/mpl for documentation.
Chris@16: 
Chris@101: // $Id$
Chris@101: // $Date$
Chris@101: // $Revision$
Chris@16: 
Chris@16: #if !defined(BOOST_MPL_PREPROCESSING_MODE)
Chris@16: #   include <boost/mpl/apply.hpp>
Chris@16: #   include <boost/mpl/at.hpp>
Chris@16: #   include <boost/mpl/size.hpp>
Chris@16: #   include <boost/mpl/aux_/nttp_decl.hpp>
Chris@16: #   include <boost/mpl/aux_/lambda_spec.hpp>
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/mpl/aux_/config/use_preprocessed.hpp>
Chris@16: 
Chris@16: #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
Chris@16:     && !defined(BOOST_MPL_PREPROCESSING_MODE)
Chris@16: 
Chris@16: #   define BOOST_MPL_PREPROCESSED_HEADER unpack_args.hpp
Chris@16: #   include <boost/mpl/aux_/include_preprocessed.hpp>
Chris@16: 
Chris@16: #else
Chris@16: 
Chris@16: #   include <boost/mpl/limits/arity.hpp>
Chris@16: #   include <boost/mpl/aux_/preprocessor/repeat.hpp>
Chris@16: #   include <boost/mpl/aux_/config/ctps.hpp>
Chris@16: #   include <boost/mpl/aux_/config/forwarding.hpp>
Chris@16: #   include <boost/preprocessor/iterate.hpp>
Chris@16: #   include <boost/preprocessor/cat.hpp>
Chris@16: 
Chris@16: 
Chris@16: namespace boost { namespace mpl {
Chris@16: 
Chris@16: // local macros, #undef-ined at the end of the header
Chris@16: 
Chris@16: #   define AUX778076_UNPACK(unused, i, Args) \
Chris@16:     , typename at_c<Args,i>::type \
Chris@16:     /**/
Chris@16: 
Chris@16: #   define AUX778076_UNPACKED_ARGS(n, Args) \
Chris@16:     BOOST_MPL_PP_REPEAT(n, AUX778076_UNPACK, Args) \
Chris@16:     /**/
Chris@16: 
Chris@16: namespace aux {
Chris@16: 
Chris@16: #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
Chris@16: template< int size, typename F, typename Args >
Chris@16: struct unpack_args_impl;
Chris@16: #else
Chris@16: template< BOOST_MPL_AUX_NTTP_DECL(int, size) > struct unpack_args_impl
Chris@16: {
Chris@16:     template< typename F, typename Args > struct apply;
Chris@16: };
Chris@16: #endif
Chris@16: 
Chris@16: #define BOOST_PP_ITERATION_PARAMS_1 \
Chris@16:     (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/unpack_args.hpp>))
Chris@16: #include BOOST_PP_ITERATE()
Chris@16: 
Chris@16: }
Chris@16: 
Chris@16: template<
Chris@16:       typename F
Chris@16:     >
Chris@16: struct unpack_args
Chris@16: {
Chris@16:     template< typename Args > struct apply
Chris@16: #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
Chris@16: #   if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
Chris@16:         : aux::unpack_args_impl< size<Args>::value,F,Args >
Chris@16: #   else
Chris@16:         : aux::unpack_args_impl< size<Args>::value >
Chris@16:             ::template apply< F,Args >
Chris@16: #   endif
Chris@16:     {
Chris@16: #else // BOOST_MPL_CFG_NO_NESTED_FORWARDING
Chris@16:     {
Chris@16:         typedef typename aux::unpack_args_impl< 
Chris@16:               size<Args>::value
Chris@16:             , F
Chris@16:             , Args
Chris@16:             >::type type;
Chris@16: #endif
Chris@16:     };
Chris@16: };
Chris@16: 
Chris@16: BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(1, unpack_args)
Chris@16: 
Chris@16: #   undef AUX778076_UNPACK
Chris@16: #   undef AUX778076_UNPACKED_ARGS
Chris@16: 
Chris@16: }}
Chris@16: 
Chris@16: #endif // BOOST_MPL_CFG_USE_PREPROCESSED_HEADERS
Chris@16: #endif // BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED
Chris@16: 
Chris@16: ///// iteration, depth == 1
Chris@16: 
Chris@16: // For gcc 4.4 compatability, we must include the
Chris@16: // BOOST_PP_ITERATION_DEPTH test inside an #else clause.
Chris@16: #else // BOOST_PP_IS_ITERATING
Chris@16: #if BOOST_PP_ITERATION_DEPTH() == 1
Chris@16: 
Chris@16: #   define i_ BOOST_PP_FRAME_ITERATION(1)
Chris@16: 
Chris@16: #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
Chris@16: 
Chris@16: template< typename F, typename Args >
Chris@16: struct unpack_args_impl<i_,F,Args>
Chris@16:     : BOOST_PP_CAT(apply,i_)<
Chris@16:           F
Chris@16:         AUX778076_UNPACKED_ARGS(i_, Args)
Chris@16:         >
Chris@16: {
Chris@16: };
Chris@16: 
Chris@16: #else
Chris@16: 
Chris@16: template<> struct unpack_args_impl<i_>
Chris@16: {
Chris@16:     template< typename F, typename Args > struct apply
Chris@16:         : BOOST_PP_CAT(apply,i_)<
Chris@16:               F
Chris@16:             AUX778076_UNPACKED_ARGS(i_, Args)
Chris@16:             >
Chris@16:     {
Chris@16:     };
Chris@16: };
Chris@16: 
Chris@16: #endif
Chris@16: 
Chris@16: #   undef i_
Chris@16: 
Chris@16: #endif // BOOST_PP_ITERATION_DEPTH()
Chris@16: #endif // BOOST_PP_IS_ITERATING