stc/exp/ml_stc_linux_make_v1.0/include/boost/mpl/aux_/template_arity.hpp

   1 \r
   2 #if !defined(BOOST_PP_IS_ITERATING)\r
   3 \r
   4 ///// header body\r
   5 \r
   6 #ifndef BOOST_MPL_AUX_TEMPLATE_ARITY_HPP_INCLUDED\r
   7 #define BOOST_MPL_AUX_TEMPLATE_ARITY_HPP_INCLUDED\r
   8 \r
   9 // Copyright Aleksey Gurtovoy 2001-2004\r
  10 //\r
  11 // Distributed under the Boost Software License, Version 1.0. \r
  12 // (See accompanying file LICENSE_1_0.txt or copy at \r
  13 // http://www.boost.org/LICENSE_1_0.txt)\r
  14 //\r
  15 // See http://www.boost.org/libs/mpl for documentation.\r
  16 \r
  17 // $Id: template_arity.hpp 49267 2008-10-11 06:19:02Z agurtovoy $\r
  18 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $\r
  19 // $Revision: 49267 $\r
  20 \r
  21 #include <boost/mpl/aux_/config/ttp.hpp>\r
  22 #include <boost/mpl/aux_/config/lambda.hpp>\r
  23 \r
  24 #if !defined(BOOST_MPL_PREPROCESSING_MODE)\r
  25 #   include <boost/mpl/aux_/template_arity_fwd.hpp>\r
  26 #   include <boost/mpl/int.hpp>\r
  27 #   if !defined(BOOST_MPL_CFG_NO_FULL_LAMBDA_SUPPORT)\r
  28 #   if defined(BOOST_MPL_CFG_EXTENDED_TEMPLATE_PARAMETERS_MATCHING)\r
  29 #       include <boost/mpl/aux_/type_wrapper.hpp>\r
  30 #   endif\r
  31 #   else\r
  32 #       include <boost/mpl/aux_/has_rebind.hpp>\r
  33 #   endif\r
  34 #endif\r
  35 \r
  36 #include <boost/mpl/aux_/config/static_constant.hpp>\r
  37 #include <boost/mpl/aux_/config/use_preprocessed.hpp>\r
  38 \r
  39 #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \\r
  40     && !defined(BOOST_MPL_PREPROCESSING_MODE)\r
  41 \r
  42 #   define BOOST_MPL_PREPROCESSED_HEADER template_arity.hpp\r
  43 #   include <boost/mpl/aux_/include_preprocessed.hpp>\r
  44 \r
  45 #else\r
  46 \r
  47 #   if !defined(BOOST_MPL_CFG_NO_FULL_LAMBDA_SUPPORT)\r
  48 #   if defined(BOOST_MPL_CFG_EXTENDED_TEMPLATE_PARAMETERS_MATCHING)\r
  49 \r
  50 #   include <boost/mpl/limits/arity.hpp>\r
  51 #   include <boost/mpl/aux_/preprocessor/range.hpp>\r
  52 #   include <boost/mpl/aux_/preprocessor/repeat.hpp>\r
  53 #   include <boost/mpl/aux_/preprocessor/params.hpp>\r
  54 #   include <boost/mpl/aux_/nttp_decl.hpp>\r
  55 \r
  56 #   include <boost/preprocessor/seq/fold_left.hpp>\r
  57 #   include <boost/preprocessor/comma_if.hpp>\r
  58 #   include <boost/preprocessor/iterate.hpp>\r
  59 #   include <boost/preprocessor/inc.hpp>\r
  60 #   include <boost/preprocessor/cat.hpp>\r
  61 \r
  62 #   define AUX778076_ARITY BOOST_PP_INC(BOOST_MPL_LIMIT_METAFUNCTION_ARITY)\r
  63 \r
  64 namespace boost { namespace mpl { namespace aux {\r
  65 \r
  66 template< BOOST_MPL_AUX_NTTP_DECL(int, N) > struct arity_tag\r
  67 {\r
  68     typedef char (&type)[N + 1];\r
  69 };\r
  70 \r
  71 #   define AUX778076_MAX_ARITY_OP(unused, state, i_) \\r
  72     ( BOOST_PP_CAT(C,i_) > 0 ? BOOST_PP_CAT(C,i_) : state ) \\r
  73 /**/\r
  74 \r
  75 template<\r
  76       BOOST_MPL_PP_PARAMS(AUX778076_ARITY, BOOST_MPL_AUX_NTTP_DECL(int, C))\r
  77     >\r
  78 struct max_arity\r
  79 {\r
  80     BOOST_STATIC_CONSTANT(int, value = \r
  81           BOOST_PP_SEQ_FOLD_LEFT(\r
  82               AUX778076_MAX_ARITY_OP\r
  83             , -1\r
  84             , BOOST_MPL_PP_RANGE(1, AUX778076_ARITY)\r
  85             )\r
  86         );\r
  87 };\r
  88 \r
  89 #   undef AUX778076_MAX_ARITY_OP\r
  90 \r
  91 arity_tag<0>::type arity_helper(...);\r
  92 \r
  93 #   define BOOST_PP_ITERATION_LIMITS (1, AUX778076_ARITY)\r
  94 #   define BOOST_PP_FILENAME_1 <boost/mpl/aux_/template_arity.hpp>\r
  95 #   include BOOST_PP_ITERATE()\r
  96 \r
  97 template< typename F, BOOST_MPL_AUX_NTTP_DECL(int, N) >\r
  98 struct template_arity_impl\r
  99 {\r
 100     BOOST_STATIC_CONSTANT(int, value = \r
 101           sizeof(arity_helper(type_wrapper<F>(),arity_tag<N>())) - 1\r
 102         );\r
 103 };\r
 104 \r
 105 #   define AUX778076_TEMPLATE_ARITY_IMPL_INVOCATION(unused, i_, F) \\r
 106     BOOST_PP_COMMA_IF(i_) template_arity_impl<F,BOOST_PP_INC(i_)>::value \\r
 107 /**/\r
 108 \r
 109 template< typename F >\r
 110 struct template_arity\r
 111 {\r
 112     BOOST_STATIC_CONSTANT(int, value = (\r
 113           max_arity< BOOST_MPL_PP_REPEAT(\r
 114               AUX778076_ARITY\r
 115             , AUX778076_TEMPLATE_ARITY_IMPL_INVOCATION\r
 116             , F\r
 117             ) >::value\r
 118         ));\r
 119         \r
 120     typedef mpl::int_<value> type;\r
 121 };\r
 122 \r
 123 #   undef AUX778076_TEMPLATE_ARITY_IMPL_INVOCATION\r
 124 \r
 125 #   undef AUX778076_ARITY\r
 126 \r
 127 }}}\r
 128 \r
 129 #   endif // BOOST_MPL_CFG_EXTENDED_TEMPLATE_PARAMETERS_MATCHING\r
 130 #   else // BOOST_MPL_CFG_NO_FULL_LAMBDA_SUPPORT\r
 131 \r
 132 #   include <boost/mpl/aux_/config/eti.hpp>\r
 133 \r
 134 namespace boost { namespace mpl { namespace aux {\r
 135 \r
 136 template< bool >\r
 137 struct template_arity_impl\r
 138 {\r
 139     template< typename F > struct result_\r
 140         : mpl::int_<-1>\r
 141     {\r
 142     };\r
 143 };\r
 144 \r
 145 template<>\r
 146 struct template_arity_impl<true>\r
 147 {\r
 148     template< typename F > struct result_\r
 149         : F::arity\r
 150     {\r
 151     };\r
 152 };\r
 153 \r
 154 template< typename F >\r
 155 struct template_arity\r
 156     : template_arity_impl< ::boost::mpl::aux::has_rebind<F>::value >\r
 157         ::template result_<F>\r
 158 {\r
 159 };\r
 160 \r
 161 #if defined(BOOST_MPL_CFG_MSVC_ETI_BUG)\r
 162 template<>\r
 163 struct template_arity<int>\r
 164     : mpl::int_<-1>\r
 165 {\r
 166 };\r
 167 #endif\r
 168 \r
 169 }}}\r
 170 \r
 171 #   endif // BOOST_MPL_CFG_NO_FULL_LAMBDA_SUPPORT\r
 172 \r
 173 #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS\r
 174 #endif // BOOST_MPL_AUX_TEMPLATE_ARITY_HPP_INCLUDED\r
 175 \r
 176 ///// iteration\r
 177 \r
 178 #else\r
 179 #define i_ BOOST_PP_FRAME_ITERATION(1)\r
 180 \r
 181 template<\r
 182       template< BOOST_MPL_PP_PARAMS(i_, typename P) > class F\r
 183     , BOOST_MPL_PP_PARAMS(i_, typename T)\r
 184     >\r
 185 typename arity_tag<i_>::type\r
 186 arity_helper(type_wrapper< F<BOOST_MPL_PP_PARAMS(i_, T)> >, arity_tag<i_>);\r
 187 \r
 188 #undef i_\r
 189 #endif // BOOST_PP_IS_ITERATING\r