1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071 |
- // Copyright Daniel Wallin 2006.
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- #ifndef BOOST_PARAMETER_AUX_PREPROCESSOR_IMPL_SPLIT_ARGS_HPP
- #define BOOST_PARAMETER_AUX_PREPROCESSOR_IMPL_SPLIT_ARGS_HPP
- #include <boost/preprocessor/tuple/elem.hpp>
- // Accessor macros for the split_args tuple.
- #define BOOST_PARAMETER_SPLIT_ARG_REQ_COUNT(x) BOOST_PP_TUPLE_ELEM(4, 0, x)
- #define BOOST_PARAMETER_SPLIT_ARG_REQ_SEQ(x) BOOST_PP_TUPLE_ELEM(4, 1, x)
- #define BOOST_PARAMETER_SPLIT_ARG_OPT_COUNT(x) BOOST_PP_TUPLE_ELEM(4, 2, x)
- #define BOOST_PARAMETER_SPLIT_ARG_OPT_SEQ(x) BOOST_PP_TUPLE_ELEM(4, 3, x)
- #include <boost/preprocessor/arithmetic/inc.hpp>
- #include <boost/preprocessor/seq/push_back.hpp>
- // Helper macros for BOOST_PARAMETER_FUNCTION_SPLIT_ARGS.
- #define BOOST_PARAMETER_FUNCTION_SPLIT_ARG_required(s_a, arg) \
- ( \
- BOOST_PP_INC(BOOST_PARAMETER_SPLIT_ARG_REQ_COUNT(s_a)) \
- , BOOST_PP_SEQ_PUSH_BACK(BOOST_PARAMETER_SPLIT_ARG_REQ_SEQ(s_a), arg) \
- , BOOST_PARAMETER_SPLIT_ARG_OPT_COUNT(s_a) \
- , BOOST_PARAMETER_SPLIT_ARG_OPT_SEQ(s_a) \
- )
- /**/
- #define BOOST_PARAMETER_FUNCTION_SPLIT_ARG_deduced_required(split_args, arg) \
- BOOST_PARAMETER_FUNCTION_SPLIT_ARG_required(split_args, arg)
- /**/
- #define BOOST_PARAMETER_FUNCTION_SPLIT_ARG_optional(s_a, arg) \
- ( \
- BOOST_PARAMETER_SPLIT_ARG_REQ_COUNT(s_a) \
- , BOOST_PARAMETER_SPLIT_ARG_REQ_SEQ(s_a) \
- , BOOST_PP_INC(BOOST_PARAMETER_SPLIT_ARG_OPT_COUNT(s_a)) \
- , BOOST_PP_SEQ_PUSH_BACK(BOOST_PARAMETER_SPLIT_ARG_OPT_SEQ(s_a), arg) \
- )
- /**/
- #define BOOST_PARAMETER_FUNCTION_SPLIT_ARG_deduced_optional(split_args, arg) \
- BOOST_PARAMETER_FUNCTION_SPLIT_ARG_optional(split_args, arg)
- /**/
- #include <boost/parameter/aux_/preprocessor/impl/argument_specs.hpp>
- #include <boost/preprocessor/cat.hpp>
- #define BOOST_PARAMETER_FUNCTION_SPLIT_ARG(s, split_args, arg) \
- BOOST_PP_CAT( \
- BOOST_PARAMETER_FUNCTION_SPLIT_ARG_ \
- , BOOST_PARAMETER_FN_ARG_QUALIFIER(arg) \
- )(split_args, arg)
- /**/
- #include <boost/preprocessor/seq/fold_left.hpp>
- #include <boost/preprocessor/seq/seq.hpp>
- // Expands from the flattened BOOST_PARAMETER_FUNCTION et. al. arg sequence to
- // the tuple (required_count, required_args, optional_count, optional_args).
- #define BOOST_PARAMETER_FUNCTION_SPLIT_ARGS(args) \
- BOOST_PP_SEQ_FOLD_LEFT( \
- BOOST_PARAMETER_FUNCTION_SPLIT_ARG \
- , (0, BOOST_PP_SEQ_NIL, 0, BOOST_PP_SEQ_NIL) \
- , args \
- )
- /**/
- #endif // include guard
|