boost/mpl/apply_fwd.hpp

   1
   2 #if !defined(BOOST_PP_IS_ITERATING)
   3
   4 ///// header body
   5
   6 #ifndef BOOST_MPL_APPLY_FWD_HPP_INCLUDED
   7 #define BOOST_MPL_APPLY_FWD_HPP_INCLUDED
   8
   9 // Copyright Aleksey Gurtovoy 2000-2004
  10 //
  11 // Distributed under the Boost Software License, Version 1.0.
  12 // (See accompanying file LICENSE_1_0.txt or copy at
  13 // http://www.boost.org/LICENSE_1_0.txt)
  14 //
  15 // See http://www.boost.org/libs/mpl for documentation.
  16
  17 // $Id: apply_fwd.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
  18 // $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
  19 // $Revision: 49267 $
  20
  21 #if !defined(BOOST_MPL_PREPROCESSING_MODE)
  22 #   include <boost/mpl/aux_/na.hpp>
  23 #endif
  24
  25 #include <boost/mpl/aux_/config/use_preprocessed.hpp>
  26
  27 #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
  28     && !defined(BOOST_MPL_PREPROCESSING_MODE)
  29
  30 #   define BOOST_MPL_PREPROCESSED_HEADER apply_fwd.hpp
  31 #   include <boost/mpl/aux_/include_preprocessed.hpp>
  32
  33 #else
  34
  35 #   include <boost/mpl/limits/arity.hpp>
  36 #   include <boost/mpl/aux_/preprocessor/params.hpp>
  37 #   include <boost/mpl/aux_/preprocessor/default_params.hpp>
  38 #   include <boost/mpl/aux_/config/ctps.hpp>
  39 #   include <boost/mpl/aux_/nttp_decl.hpp>
  40
  41 #   include <boost/preprocessor/comma_if.hpp>
  42 #   include <boost/preprocessor/iterate.hpp>
  43 #   include <boost/preprocessor/cat.hpp>
  44
  45 // agurt, 15/jan/02: top-level 'apply' template gives an ICE on MSVC
  46 // (for known reasons)
  47 #if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
  48 #   define BOOST_MPL_CFG_NO_APPLY_TEMPLATE
  49 #endif
  50
  51 namespace boost { namespace mpl {
  52
  53 // local macro, #undef-ined at the end of the header
  54 #   define AUX778076_APPLY_DEF_PARAMS(param, value) \
  55     BOOST_MPL_PP_DEFAULT_PARAMS( \
  56           BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
  57         , param \
  58         , value \
  59         ) \
  60     /**/
  61
  62 #   define AUX778076_APPLY_N_COMMA_PARAMS(n, param) \
  63     BOOST_PP_COMMA_IF(n) \
  64     BOOST_MPL_PP_PARAMS(n, param) \
  65     /**/
  66
  67 #   if !defined(BOOST_MPL_CFG_NO_APPLY_TEMPLATE)
  68
  69 #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
  70 // forward declaration
  71 template<
  72       typename F, AUX778076_APPLY_DEF_PARAMS(typename T, na)
  73     >
  74 struct apply;
  75 #else
  76 namespace aux {
  77 template< BOOST_AUX_NTTP_DECL(int, arity_) > struct apply_chooser;
  78 }
  79 #endif
  80
  81 #   endif // BOOST_MPL_CFG_NO_APPLY_TEMPLATE
  82
  83 #define BOOST_PP_ITERATION_PARAMS_1 \
  84     (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/apply_fwd.hpp>))
  85 #include BOOST_PP_ITERATE()
  86
  87
  88 #   undef AUX778076_APPLY_N_COMMA_PARAMS
  89 #   undef AUX778076_APPLY_DEF_PARAMS
  90
  91 }}
  92
  93 #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
  94 #endif // BOOST_MPL_APPLY_FWD_HPP_INCLUDED
  95
  96 ///// iteration
  97
  98 #else
  99 #define i_ BOOST_PP_FRAME_ITERATION(1)
 100
 101 template<
 102       typename F AUX778076_APPLY_N_COMMA_PARAMS(i_, typename T)
 103     >
 104 struct BOOST_PP_CAT(apply,i_);
 105
 106 #undef i_
 107 #endif // BOOST_PP_IS_ITERATING