boost_mpl/include/boost/mpl/aux_/lambda_no_ctps.hpp

//-----------------------------------------------------------------------------
// boost mpl/lambda_no_ctps.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2001-02
// Aleksey Gurtovoy
//
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee, 
// provided that the above copyright notice appears in all copies and 
// that both the copyright notice and this permission notice appear in 
// supporting documentation. No representations are made about the 
// suitability of this software for any purpose. It is provided "as is" 
// without express or implied warranty.

#if !defined(BOOST_PP_IS_ITERATING)

///// header body

#ifndef BOOST_MPL_AUX_LAMBDA_NO_CTPS_HPP_INCLUDED
#define BOOST_MPL_AUX_LAMBDA_NO_CTPS_HPP_INCLUDED

#if !defined(BOOST_MPL_PREPROCESSING_MODE)
#   include "boost/mpl/lambda_fwd.hpp"
#   include "boost/mpl/bind.hpp"
#   include "boost/mpl/protect.hpp"
#   include "boost/mpl/bool.hpp"
#   include "boost/mpl/aux_/template_arity.hpp"
#endif

#include "boost/mpl/aux_/config/use_preprocessed.hpp"

#if !defined(BOOST_MPL_NO_PREPROCESSED_HEADERS) && \
    !defined(BOOST_MPL_PREPROCESSING_MODE)

#   define BOOST_MPL_PREPROCESSED_HEADER lambda_no_ctps.hpp
#   include "boost/mpl/aux_/include_preprocessed.hpp"

#else

#   include "boost/mpl/aux_/config/nttp.hpp"
#   include "boost/mpl/limits/arity.hpp"
#   include "boost/mpl/aux_/preprocessor/params.hpp"
#   include "boost/mpl/aux_/preprocessor/repeat.hpp"

#   include "boost/preprocessor/iterate.hpp"
#   include "boost/preprocessor/inc.hpp"
#   include "boost/preprocessor/cat.hpp"

#   include "boost/config.hpp"

namespace boost {
namespace mpl {

// local macros, #undef-ined at the end of the header
#   define AUX_LAMBDA_PARAMS(i, param) \
    BOOST_MPL_PP_PARAMS(i, param) \
    /**/

namespace aux {

template< BOOST_MPL_AUX_NTTP_DECL(int, arity_), bool Protect > struct lambda_impl
{
    template< typename T > struct result_
    {
        typedef T type;
    };
};

#define BOOST_PP_ITERATION_PARAMS_1 \
    (3,(1, BOOST_MPL_METAFUNCTION_MAX_ARITY, "boost/mpl/aux_/lambda_no_ctps.hpp"))
#include BOOST_PP_ITERATE()

} // namespace aux

template< typename T, bool Protect = true >
struct lambda
    : aux::lambda_impl<
          ::boost::mpl::aux::template_arity<T>::value
#if !defined(BOOST_MSVC) || BOOST_MSVC > 1200
        , Protect
#else
        , bool_<Protect>::value
#endif
        >::template result_<T>
{
};

#   undef AUX_LAMBDA_PARAMS

} // namespace mpl
} // namespace boost

#endif // BOOST_MPL_USE_PREPROCESSED_HEADERS
#endif // BOOST_MPL_AUX_LAMBDA_NO_CTPS_HPP_INCLUDED

///// iteration

#else
#define i BOOST_PP_FRAME_ITERATION(1)

#   define AUX_LAMBDA_INVOCATION(unused, i, T) \
    , typename lambda< \
          typename F::BOOST_PP_CAT(arg,BOOST_PP_INC(i)) \
        , false \
        >::type \
    /**/

template<> struct lambda_impl<i,false>
{
    template< typename F > struct result_
    {
        typedef typename F::rebind f_;
        typedef BOOST_PP_CAT(bind,i)<
              f_
            BOOST_MPL_PP_REPEAT(i, AUX_LAMBDA_INVOCATION, T)
            > type;
    };
};

template<> struct lambda_impl<i,true>
{
    template< typename F > struct result_
    {
        typedef typename F::rebind f_;
        typedef mpl::protect< BOOST_PP_CAT(bind,i)<
              f_
            BOOST_MPL_PP_REPEAT(i, AUX_LAMBDA_INVOCATION, T)
            > > type;
    };
};

#   undef AUX_LAMBDA_INVOCATION

#undef i
#endif // BOOST_PP_IS_ITERATING