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os/ossrv/ossrv_pub/boost_apis/boost/parameter/macros.hpp
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib. 
     1 // Copyright David Abrahams, Daniel Wallin 2003. Use, modification and 

     2 // distribution is subject to the Boost Software License, Version 1.0. 

     3 // (See accompanying file LICENSE_1_0.txt or copy at 

     4 // http://www.boost.org/LICENSE_1_0.txt)

     5 

     6 #ifndef BOOST_PARAMETER_MACROS_050412_HPP

     7 #define BOOST_PARAMETER_MACROS_050412_HPP

     8 

     9 #include <boost/preprocessor/tuple/elem.hpp>

    10 #include <boost/preprocessor/repetition/repeat_from_to.hpp>

    11 #include <boost/preprocessor/arithmetic/inc.hpp>

    12 #include <boost/preprocessor/logical/bool.hpp>

    13 #include <boost/preprocessor/punctuation/comma_if.hpp>

    14 #include <boost/preprocessor/control/expr_if.hpp>

    15 #include <boost/preprocessor/repetition/enum_params.hpp>

    16 #include <boost/preprocessor/repetition/enum_binary_params.hpp>

    17 #include <boost/preprocessor/cat.hpp>

    18 

    19 #define BOOST_PARAMETER_FUN_TEMPLATE_HEAD1(n) \

    20     template<BOOST_PP_ENUM_PARAMS(n, class T)>

    21 

    22 #define BOOST_PARAMETER_FUN_TEMPLATE_HEAD0(n)

    23 

    24 #ifndef BOOST_NO_SFINAE

    25 

    26 # define BOOST_PARAMETER_MATCH_TYPE(n, param)           \

    27             BOOST_PP_EXPR_IF(n, typename) param::match  \

    28             <                                           \

    29                 BOOST_PP_ENUM_PARAMS(n, T)              \

    30             >::type 

    31 

    32 #else

    33 

    34 # define BOOST_PARAMETER_MATCH_TYPE(n, param) param

    35 

    36 #endif

    37 

    38 #define BOOST_PARAMETER_FUN_DECL(z, n, params)                                      \

    39                                                                                     \

    40     BOOST_PP_CAT(BOOST_PARAMETER_FUN_TEMPLATE_HEAD, BOOST_PP_BOOL(n))(n)            \

    41                                                                                     \

    42     BOOST_PP_TUPLE_ELEM(3, 0, params)                                               \

    43         BOOST_PP_TUPLE_ELEM(3, 1, params)(                                          \

    44             BOOST_PP_ENUM_BINARY_PARAMS(n, T, const& p)                             \

    45             BOOST_PP_COMMA_IF(n)                                                    \

    46             BOOST_PARAMETER_MATCH_TYPE(n,BOOST_PP_TUPLE_ELEM(3, 2, params))         \

    47             kw = BOOST_PP_TUPLE_ELEM(3, 2, params)()                                \

    48         )                                                                           \

    49     {                                                                               \

    50         return BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(3, 1, params), _with_named_params)( \

    51             kw(BOOST_PP_ENUM_PARAMS(n, p))                                          \

    52         );                                                                          \

    53     }

    54 

    55 // Generates:

    56 //

    57 // template<class Params>

    58 // ret name ## _with_named_params(Params const&);

    59 //

    60 // template<class T0>

    61 // ret name(T0 const& p0, typename parameters::match<T0>::type kw = parameters())

    62 // {

    63 //     return name ## _with_named_params(kw(p0));

    64 // }

    65 //

    66 // template<class T0, ..., class TN>

    67 // ret name(T0 const& p0, ..., TN const& PN

    68 //    , typename parameters::match<T0, ..., TN>::type kw = parameters())

    69 // {

    70 //     return name ## _with_named_params(kw(p0, ..., pN));

    71 // }

    72 //

    73 // template<class Params>

    74 // ret name ## _with_named_params(Params const&)

    75 //

    76 // lo and hi determines the min and max arity of the generated functions.

    77 

    78 #define BOOST_PARAMETER_FUN(ret, name, lo, hi, parameters)                          \

    79                                                                                     \

    80     template<class Params>                                                          \

    81     ret BOOST_PP_CAT(name, _with_named_params)(Params const& p);                    \

    82                                                                                     \

    83     BOOST_PP_REPEAT_FROM_TO(                                                        \

    84         lo, BOOST_PP_INC(hi), BOOST_PARAMETER_FUN_DECL, (ret, name, parameters))    \

    85                                                                                     \

    86     template<class Params>                                                          \

    87     ret BOOST_PP_CAT(name, _with_named_params)(Params const& p)

    88 

    89 #define BOOST_PARAMETER_MEMFUN(ret, name, lo, hi, parameters)                       \

    90                                                                                     \

    91     BOOST_PP_REPEAT_FROM_TO(                                                        \

    92         lo, BOOST_PP_INC(hi), BOOST_PARAMETER_FUN_DECL, (ret, name, parameters))    \

    93                                                                                     \

    94     template<class Params>                                                          \

    95     ret BOOST_PP_CAT(name, _with_named_params)(Params const& p)

    96 

    97 #endif // BOOST_PARAMETER_MACROS_050412_HPP

    98
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