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include/boost/spirit/dynamic/select.hpp  view on Meta::CPAN

    //          return result_t(tuple_t(
    //                  parser_t0::convert(p0),
    //                  ...
    //              ));
    //      }
    //
    //  The number of generated functions depends on the maximum tuple member 
    //  limit defined by the PHOENIX_LIMIT pp constant. 
    //
    ///////////////////////////////////////////////////////////////////////////
    #define BOOST_SPIRIT_SELECT_EMBEDDED(z, N, _)                           \
        typename impl::as_embedded_parser<BOOST_PP_CAT(ParserT, N)>::type   \
        /**/
    #define BOOST_SPIRIT_SELECT_EMBEDDED_TYPEDEF(z, N, _)                   \
        typedef impl::as_embedded_parser<BOOST_PP_CAT(ParserT, N)>          \
            BOOST_PP_CAT(parser_t, N);                                      \
        /**/
    #define BOOST_SPIRIT_SELECT_CONVERT(z, N, _)                            \
        BOOST_PP_CAT(parser_t, N)::convert(BOOST_PP_CAT(p, N))              \
        /**/
        
    #define BOOST_SPIRIT_SELECT_PARSER(z, N, _)                             \
        template <                                                          \
            BOOST_PP_ENUM_PARAMS_Z(z, BOOST_PP_INC(N), typename ParserT)    \
        >                                                                   \
        select_parser<                                                      \
            phoenix::tuple<                                                 \
                BOOST_PP_ENUM_ ## z(BOOST_PP_INC(N),                        \
                    BOOST_SPIRIT_SELECT_EMBEDDED, _)                        \
            >,                                                              \
            BehaviourT,                                                     \
            T                                                               \
        >                                                                   \
        operator()(                                                         \
            BOOST_PP_ENUM_BINARY_PARAMS_Z(z, BOOST_PP_INC(N),               \
                ParserT, const &p)                                          \
        ) const                                                             \
        {                                                                   \
            BOOST_PP_REPEAT_ ## z(BOOST_PP_INC(N),                          \
                BOOST_SPIRIT_SELECT_EMBEDDED_TYPEDEF, _)                    \
                                                                            \
            typedef phoenix::tuple<                                         \
                    BOOST_PP_ENUM_BINARY_PARAMS_Z(z, BOOST_PP_INC(N),       \
                        typename parser_t, ::type BOOST_PP_INTERCEPT)       \
                > tuple_t;                                                  \
            typedef select_parser<tuple_t, BehaviourT, T> result_t;         \
                                                                            \
            return result_t(tuple_t(                                        \
                    BOOST_PP_ENUM_ ## z(BOOST_PP_INC(N),                    \
                        BOOST_SPIRIT_SELECT_CONVERT, _)                     \
                ));                                                         \
        }                                                                   \
        /**/
        
    BOOST_PP_REPEAT(BOOST_SPIRIT_SELECT_LIMIT_A, 
        BOOST_SPIRIT_SELECT_PARSER, _)
        
    #undef BOOST_SPIRIT_SELECT_PARSER
    #undef BOOST_SPIRIT_SELECT_CONVERT
    #undef BOOST_SPIRIT_SELECT_EMBEDDED_TYPEDEF
    #undef BOOST_SPIRIT_SELECT_EMBEDDED
    ///////////////////////////////////////////////////////////////////////////
};

///////////////////////////////////////////////////////////////////////////////
//
//  Predefined parser generator helper objects
//
///////////////////////////////////////////////////////////////////////////////
select_parser_gen<select_default_no_fail> const select_p = 
    select_parser_gen<select_default_no_fail>();