#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 2000-2008

//

// 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.

// $Id: apply_wrap.hpp 49272 2008-10-11 06:50:46Z agurtovoy $

// $Date: 2008-10-11 02:50:46 -0400 (Sat, 11 Oct 2008) $

// $Revision: 49272 $

#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/bcc.hpp>

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

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

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

// For gcc 4.4 compatability, we must include the

// BOOST_PP_ITERATION_DEPTH test inside an #else clause.

#else // BOOST_PP_IS_ITERATING

#if 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)

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

    && defined(BOOST_MPL_CFG_BCC590_WORKAROUNDS) \

    && !defined(BOOST_MPL_CFG_NO_HAS_APPLY)

template< typename F, bool F_has_apply >

struct apply_wrap_impl0_bcb {

    typedef typename F::template apply< na > type;

};

template< typename F >

struct apply_wrap_impl0_bcb< F, true > {

    typedef typename F::apply type;

};

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 apply_wrap_impl0_bcb< F, aux::has_apply< F >::value >::type type;

};

#else

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;

};

#endif

#   undef j_

#endif // BOOST_PP_ITERATION_DEPTH()

#endif // BOOST_PP_IS_ITERATING