ceph/src/boost/libs/mpl/include/boost/mpl/unpack_args.hpp

   1
   2 #if !defined(BOOST_PP_IS_ITERATING)
   3
   4 ///// header body
   5
   6 #ifndef BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED
   7 #define BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED
   8
   9 // Copyright Aleksey Gurtovoy 2002-2004
  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 // $Id$
  18 // $Date$
  19 // $Revision$
  20
  21 #if !defined(BOOST_MPL_PREPROCESSING_MODE)
  22 #   include <boost/mpl/apply.hpp>
  23 #   include <boost/mpl/at.hpp>
  24 #   include <boost/mpl/size.hpp>
  25 #   include <boost/mpl/aux_/nttp_decl.hpp>
  26 #   include <boost/mpl/aux_/lambda_spec.hpp>
  27 #endif
  28
  29 #include <boost/mpl/aux_/config/use_preprocessed.hpp>
  30
  31 #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
  32     && !defined(BOOST_MPL_PREPROCESSING_MODE)
  33
  34 #   define BOOST_MPL_PREPROCESSED_HEADER unpack_args.hpp
  35 #   include <boost/mpl/aux_/include_preprocessed.hpp>
  36
  37 #else
  38
  39 #   include <boost/mpl/limits/arity.hpp>
  40 #   include <boost/mpl/aux_/preprocessor/repeat.hpp>
  41 #   include <boost/mpl/aux_/config/ctps.hpp>
  42 #   include <boost/mpl/aux_/config/forwarding.hpp>
  43 #   include <boost/preprocessor/iterate.hpp>
  44 #   include <boost/preprocessor/cat.hpp>
  45
  46
  47 namespace boost { namespace mpl {
  48
  49 // local macros, #undef-ined at the end of the header
  50
  51 #   define AUX778076_UNPACK(unused, i, Args) \
  52     , typename at_c<Args,i>::type \
  53     /**/
  54
  55 #   define AUX778076_UNPACKED_ARGS(n, Args) \
  56     BOOST_MPL_PP_REPEAT(n, AUX778076_UNPACK, Args) \
  57     /**/
  58
  59 namespace aux {
  60
  61 #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
  62 template< int size, typename F, typename Args >
  63 struct unpack_args_impl;
  64 #else
  65 template< BOOST_MPL_AUX_NTTP_DECL(int, size) > struct unpack_args_impl
  66 {
  67     template< typename F, typename Args > struct apply;
  68 };
  69 #endif
  70
  71 #define BOOST_PP_ITERATION_PARAMS_1 \
  72     (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/unpack_args.hpp>))
  73 #include BOOST_PP_ITERATE()
  74
  75 }
  76
  77 template<
  78       typename F
  79     >
  80 struct unpack_args
  81 {
  82     template< typename Args > struct apply
  83 #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
  84 #   if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
  85         : aux::unpack_args_impl< size<Args>::value,F,Args >
  86 #   else
  87         : aux::unpack_args_impl< size<Args>::value >
  88             ::template apply< F,Args >
  89 #   endif
  90     {
  91 #else // BOOST_MPL_CFG_NO_NESTED_FORWARDING
  92     {
  93         typedef typename aux::unpack_args_impl<
  94               size<Args>::value
  95             , F
  96             , Args
  97             >::type type;
  98 #endif
  99     };
 100 };
 101
 102 BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(1, unpack_args)
 103
 104 #   undef AUX778076_UNPACK
 105 #   undef AUX778076_UNPACKED_ARGS
 106
 107 }}
 108
 109 #endif // BOOST_MPL_CFG_USE_PREPROCESSED_HEADERS
 110 #endif // BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED
 111
 112 ///// iteration, depth == 1
 113
 114 // For gcc 4.4 compatability, we must include the
 115 // BOOST_PP_ITERATION_DEPTH test inside an #else clause.
 116 #else // BOOST_PP_IS_ITERATING
 117 #if BOOST_PP_ITERATION_DEPTH() == 1
 118
 119 #   define i_ BOOST_PP_FRAME_ITERATION(1)
 120
 121 #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
 122
 123 template< typename F, typename Args >
 124 struct unpack_args_impl<i_,F,Args>
 125     : BOOST_PP_CAT(apply,i_)<
 126           F
 127         AUX778076_UNPACKED_ARGS(i_, Args)
 128         >
 129 {
 130 };
 131
 132 #else
 133
 134 template<> struct unpack_args_impl<i_>
 135 {
 136     template< typename F, typename Args > struct apply
 137         : BOOST_PP_CAT(apply,i_)<
 138               F
 139             AUX778076_UNPACKED_ARGS(i_, Args)
 140             >
 141     {
 142     };
 143 };
 144
 145 #endif
 146
 147 #   undef i_
 148
 149 #endif // BOOST_PP_ITERATION_DEPTH()
 150 #endif // BOOST_PP_IS_ITERATING