#if !defined(BOOST_PP_IS_ITERATING)

 ///// header body

 #ifndef BOOST_MPL_APPLY_WRAP_HPP_INCLUDED

 #define BOOST_MPL_APPLY_WRAP_HPP_INCLUDED

 // Copyright Aleksey Gurtovoy 2000-2004

 //

 // Distributed under the Boost Software License, Version 1.0. 

 // (See accompanying file LICENSE_1_0.txt or copy at 

 // http://www.boost.org/LICENSE_1_0.txt)

 //

 // See http://www.boost.org/libs/mpl for documentation.

 // $Source: /cvsroot/boost/boost/boost/mpl/apply_wrap.hpp,v $

 // $Date: 2004/09/03 15:56:55 $

 // $Revision: 1.3 $

 #if !defined(BOOST_MPL_PREPROCESSING_MODE)

 #   include <boost/mpl/aux_/arity.hpp>

 #   include <boost/mpl/aux_/has_apply.hpp>

 #   include <boost/mpl/aux_/na.hpp>

 #   include <boost/mpl/aux_/msvc_never_true.hpp>

 #endif

 #include <boost/mpl/aux_/config/use_preprocessed.hpp>

 #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \

     && !defined(BOOST_MPL_PREPROCESSING_MODE)

 #   define BOOST_MPL_PREPROCESSED_HEADER apply_wrap.hpp

 #   include <boost/mpl/aux_/include_preprocessed.hpp>

 #else

 #   include <boost/mpl/limits/arity.hpp>

 #   include <boost/mpl/aux_/preprocessor/params.hpp>

 #   include <boost/mpl/aux_/preprocessor/enum.hpp>

 #   include <boost/mpl/aux_/preprocessor/add.hpp>

 #   include <boost/mpl/aux_/config/dtp.hpp>

 #   include <boost/mpl/aux_/config/eti.hpp>

 #   include <boost/mpl/aux_/config/ctps.hpp>

 #   include <boost/mpl/aux_/config/msvc.hpp>

 #   include <boost/mpl/aux_/config/workaround.hpp>

 #   include <boost/preprocessor/comma_if.hpp>

 #   include <boost/preprocessor/logical/and.hpp>

 #   include <boost/preprocessor/inc.hpp>

 #   include <boost/preprocessor/iterate.hpp>

 namespace boost { namespace mpl {

 // local macros, #undef-ined at the end of the header

 #   define AUX778076_APPLY_WRAP_PARAMS(n, param) \

     BOOST_MPL_PP_PARAMS(n, param) \

     /**/

 #   define AUX778076_APPLY_WRAP_SPEC_PARAMS(n, param) \

     BOOST_MPL_PP_ENUM(BOOST_PP_INC(n), param) \

     /**/

 #define BOOST_PP_ITERATION_PARAMS_1 \

     (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/apply_wrap.hpp>))

 #include BOOST_PP_ITERATE()

 #   undef AUX778076_APPLY_WRAP_SPEC_PARAMS

 #   undef AUX778076_APPLY_WRAP_PARAMS

 }}

 #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS

 #endif // BOOST_MPL_APPLY_WRAP_HPP_INCLUDED

 ///// iteration, depth == 1

 #elif BOOST_PP_ITERATION_DEPTH() == 1

 #   define i_ BOOST_PP_FRAME_ITERATION(1)

 #   if BOOST_WORKAROUND(BOOST_MSVC, < 1300)

 // MSVC version

 #define AUX778076_MSVC_DTW_NAME BOOST_PP_CAT(msvc_apply,i_)

 #define AUX778076_MSVC_DTW_ORIGINAL_NAME apply

 #define AUX778076_MSVC_DTW_ARITY i_

 #include <boost/mpl/aux_/msvc_dtw.hpp>

 template<

       typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T)

     >

 struct BOOST_PP_CAT(apply_wrap,i_)

 {

     // Metafunction forwarding confuses vc6

     typedef typename BOOST_PP_CAT(msvc_apply,i_)<F>::template result_<

           AUX778076_APPLY_WRAP_PARAMS(i_, T)

         >::type type;

 };

 #   elif defined(BOOST_MPL_CFG_BROKEN_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)

 // MWCW/Borland version

 template<

       int N, typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T)

     >

 struct BOOST_PP_CAT(apply_wrap_impl,i_);

 #define BOOST_PP_ITERATION_PARAMS_2 \

     (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY - i_, <boost/mpl/apply_wrap.hpp>))

 #include BOOST_PP_ITERATE()

 template<

       typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T)

     >

 struct BOOST_PP_CAT(apply_wrap,i_)

     : BOOST_PP_CAT(apply_wrap_impl,i_)<

           ::boost::mpl::aux::arity<F,i_>::value

         , F

         BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, T)

         >::type

 {

 };

 #   else

 // ISO98 C++, with minor concession to vc7

 template<

       typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T)

 #if i_ == 0

     , typename has_apply_ = typename aux::has_apply<F>::type

 #endif

     >

 struct BOOST_PP_CAT(apply_wrap,i_)

 // metafunction forwarding confuses MSVC 7.0

 #if !BOOST_WORKAROUND(BOOST_MSVC, == 1300)

     : F::template apply< AUX778076_APPLY_WRAP_PARAMS(i_, T) >

 {

 #else

 {    

     typedef typename F::template apply<

          AUX778076_APPLY_WRAP_PARAMS(i_, T)

         >::type type;

 #endif

 };

 #if i_ == 0 && !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)

 template< typename F >

 struct BOOST_PP_CAT(apply_wrap,i_)<F,true_>

     : F::apply

 {

 };

 #endif

 #   endif // workarounds

 #if defined(BOOST_MPL_CFG_MSVC_ETI_BUG)

 /// workaround for ETI bug

 template<>

 struct BOOST_PP_CAT(apply_wrap,i_)<AUX778076_APPLY_WRAP_SPEC_PARAMS(i_, int)>

 {

     typedef int type;

 };

 #endif

 #   undef i_

 ///// iteration, depth == 2

 #elif BOOST_PP_ITERATION_DEPTH() == 2

 #   define j_ BOOST_PP_FRAME_ITERATION(2)

 template<

       typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T)

     >

 struct BOOST_PP_CAT(apply_wrap_impl,i_)<

           BOOST_MPL_PP_ADD(i_, j_)

         , F

         BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, T)

         >

 {

     typedef typename F::template apply<

           AUX778076_APPLY_WRAP_PARAMS(i_, T)

 #if i_ == 0 && j_ == 0

 /// since the defaults are "lost", we have to pass *something* even for nullary

 /// metafunction classes

         na

 #else

         BOOST_PP_COMMA_IF(BOOST_PP_AND(i_, j_)) BOOST_MPL_PP_ENUM(j_, na)

 #endif

         > type;

 };

 #   undef j_

 #endif // BOOST_PP_IS_ITERATING