1 // Copyright David Abrahams 2005. Distributed under the Boost

     2 // Software License, Version 1.0. (See accompanying

     3 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

     4 #ifndef BOOST_PARAMETER_MATCH_DWA2005714_HPP

     5 # define BOOST_PARAMETER_MATCH_DWA2005714_HPP

     6 

     7 # include <boost/detail/workaround.hpp>

     8 # include <boost/preprocessor/seq/enum.hpp>

     9 

    10 # if BOOST_WORKAROUND(__MWERKS__, <= 0x3003)

    11 // Temporary version of BOOST_PP_SEQ_ENUM until Paul M. integrates the workaround.

    12 #  define BOOST_PARAMETER_SEQ_ENUM_I(size,seq) BOOST_PP_CAT(BOOST_PP_SEQ_ENUM_, size) seq

    13 #  define BOOST_PARAMETER_SEQ_ENUM(seq) BOOST_PARAMETER_SEQ_ENUM_I(BOOST_PP_SEQ_SIZE(seq), seq)

    14 # else

    15 #  define BOOST_PARAMETER_SEQ_ENUM(seq) BOOST_PP_SEQ_ENUM(seq)

    16 # endif 

    17 

    18 # if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))

    19 

    20 #  include <boost/parameter/config.hpp>

    21 #  include <boost/parameter/aux_/void.hpp>

    22 #  include <boost/preprocessor/arithmetic/sub.hpp>

    23 #  include <boost/preprocessor/facilities/intercept.hpp>

    24 #  include <boost/preprocessor/repetition/enum_trailing_params.hpp>

    25 

    26 #  define BOOST_PARAMETER_MATCH_DEFAULTS(ArgTypes)              \

    27         BOOST_PP_ENUM_TRAILING_PARAMS(                          \

    28             BOOST_PP_SUB(                                       \

    29                 BOOST_PARAMETER_MAX_ARITY                       \

    30               , BOOST_PP_SEQ_SIZE(ArgTypes)                     \

    31             )                                                   \

    32           , ::boost::parameter::void_ BOOST_PP_INTERCEPT   \

    33         )

    34 

    35 # else

    36 

    37 #  define BOOST_PARAMETER_MATCH_DEFAULTS(ArgTypes)

    38 

    39 # endif 

    40 

    41 //

    42 // Generates, e.g.

    43 //

    44 //    typename dfs_params::match<A1,A2>::type name = dfs_params()

    45 //

    46 // with workarounds for Borland compatibility.

    47 //

    48 

    49 # define BOOST_PARAMETER_MATCH(ParameterSpec, ArgTypes, name)   \

    50     typename ParameterSpec ::match<                             \

    51         BOOST_PARAMETER_SEQ_ENUM(ArgTypes)                      \

    52         BOOST_PARAMETER_MATCH_DEFAULTS(ArgTypes)                \

    53     >::type name = ParameterSpec ()

    54 

    55 #endif // BOOST_PARAMETER_MATCH_DWA2005714_HPP