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boost/mpl/aux_/lambda_support.hpp

//-----------------------------------------------------------------------------
// boost mpl/aux_/lambda_support.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.

#ifndef BOOST_MPL_AUX_LAMBDA_SUPPORT_HPP_INCLUDED
#define BOOST_MPL_AUX_LAMBDA_SUPPORT_HPP_INCLUDED

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

#if !defined(BOOST_MPL_NO_FULL_LAMBDA_SUPPORT)

#   define BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(i, name, params) /**/
#   define BOOST_MPL_AUX_LAMBDA_SUPPORT(i,name,params) /**/

#else

#   include "boost/mpl/aux_/config/workaround.hpp"
#   include "boost/mpl/aux_/preprocessor/params.hpp"
#   include "boost/preprocessor/tuple/to_list.hpp"
#   include "boost/preprocessor/list/for_each_i.hpp"
#   include "boost/preprocessor/inc.hpp"
#   include "boost/preprocessor/cat.hpp"

#   define BOOST_MPL_AUX_LAMBDA_SUPPORT_ARG_TYPEDEF_FUNC(R,typedef_,i,param) \
    typedef_ param BOOST_PP_CAT(arg,BOOST_PP_INC(i)); \
    /**/

// agurt, 07/mar/03: restore an old revision for the sake of SGI MIPSpro C++
#if BOOST_WORKAROUND(__EDG_VERSION__, <= 238) 

#   define BOOST_MPL_AUX_LAMBDA_SUPPORT(i, name, params) \
    BOOST_STATIC_CONSTANT(int, arity = i); \
    BOOST_PP_LIST_FOR_EACH_I_R( \
          1 \
        , BOOST_MPL_AUX_LAMBDA_SUPPORT_ARG_TYPEDEF_FUNC \
        , typedef \
        , BOOST_PP_TUPLE_TO_LIST(i,params) \
        ) \
    struct rebind \
    { \
        template< BOOST_MPL_PP_PARAMS(i,typename U) > struct apply \
            : name< BOOST_MPL_PP_PARAMS(i,U) > \
        { \
        }; \
    }; \
    /**/

#   define BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(i, name, params) \
    BOOST_MPL_AUX_LAMBDA_SUPPORT(i, name, params) \
    /**/

#elif BOOST_WORKAROUND(__EDG_VERSION__, <= 244) && !defined(BOOST_INTEL_CXX_VERSION)
// agurt, 18/jan/03: old EDG-based compilers actually enforce 11.4 para 9
// (in strict mode), so we have to provide an alternative to the 
// MSVC-optimized implementation

#   define BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(i, name, params) \
    BOOST_STATIC_CONSTANT(int, arity = i); \
    BOOST_PP_LIST_FOR_EACH_I_R( \
          1 \
        , BOOST_MPL_AUX_LAMBDA_SUPPORT_ARG_TYPEDEF_FUNC \
        , typedef \
        , BOOST_PP_TUPLE_TO_LIST(i,params) \
        ) \
    struct rebind; \
/**/

#   define BOOST_MPL_AUX_LAMBDA_SUPPORT(i, name, params) \
    BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(i, name, params) \
}; \
template< BOOST_MPL_PP_PARAMS(i,typename T) > \
struct name<BOOST_MPL_PP_PARAMS(i,T)>::rebind \
{ \
    template< BOOST_MPL_PP_PARAMS(i,typename U) > struct apply \
        : name< BOOST_MPL_PP_PARAMS(i,U) > \
    { \
    }; \
/**/

#else // __EDG_VERSION__

#   define BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(i, name, params) \
    BOOST_STATIC_CONSTANT(int, arity = i); \
    BOOST_PP_LIST_FOR_EACH_I_R( \
          1 \
        , BOOST_MPL_AUX_LAMBDA_SUPPORT_ARG_TYPEDEF_FUNC \
        , typedef \
        , BOOST_PP_TUPLE_TO_LIST(i,params) \
        ) \
    friend class BOOST_PP_CAT(name,_rebind); \
    typedef BOOST_PP_CAT(name,_rebind) rebind; \
/**/

#   if !defined(__BORLANDC__)
#   define BOOST_MPL_AUX_LAMBDA_SUPPORT(i, name, params) \
    BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(i, name, params) \
}; \
class BOOST_PP_CAT(name,_rebind) \
{ \
 public: \
    template< BOOST_MPL_PP_PARAMS(i,typename U) > struct apply \
        : name< BOOST_MPL_PP_PARAMS(i,U) > \
    { \
    }; \
/**/
#   else
#   define BOOST_MPL_AUX_LAMBDA_SUPPORT(i, name, params) \
    BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(i, name, params) \
}; \
class BOOST_PP_CAT(name,_rebind) \
{ \
 public: \
    template< BOOST_MPL_PP_PARAMS(i,typename U) > struct apply \
    { \
        typedef typename name< BOOST_MPL_PP_PARAMS(i,U) >::type type; \
    }; \
/**/
#   endif // __BORLANDC__

#endif // __EDG_VERSION__

#endif // BOOST_MPL_NO_FULL_LAMBDA_SUPPORT

#endif // BOOST_MPL_AUX_LAMBDA_SUPPORT_HPP_INCLUDED