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- // Copyright (C) 2009-2012 Lorenzo Caminiti
- // Distributed under the Boost Software License, Version 1.0
- // (see accompanying file LICENSE_1_0.txt or a copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- // Home at http://www.boost.org/libs/local_function
- #ifndef BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_PARAMS_HPP_
- #define BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_PARAMS_HPP_
- #include <boost/local_function/aux_/preprocessor/traits/decl_/index.hpp>
- #include <boost/local_function/aux_/preprocessor/traits/param.hpp>
- #include <boost/local_function/detail/preprocessor/keyword/default.hpp>
- #include <boost/preprocessor/tuple/elem.hpp>
- #include <boost/preprocessor/tuple/eat.hpp>
- #include <boost/preprocessor/tuple/rem.hpp>
- #include <boost/preprocessor/arithmetic/inc.hpp>
- #include <boost/preprocessor/control/iif.hpp>
- #include <boost/preprocessor/logical/compl.hpp>
- #include <boost/preprocessor/facilities/is_empty.hpp>
- #include <boost/preprocessor/list/adt.hpp>
- #include <boost/preprocessor/list/fold_left.hpp>
- // PRIVATE //
- #define BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_PARAMS_DEFAULT_OP_(s, \
- default_count, param_traits) \
- BOOST_PP_IIF(BOOST_PP_IS_EMPTY( \
- BOOST_LOCAL_FUNCTION_AUX_PP_PARAM_TRAITS_DEFAULT(param_traits)), \
- BOOST_PP_TUPLE_REM(1) \
- , \
- BOOST_PP_INC \
- )(default_count)
- // Precondition: params is a pp-list which is not nil.
- #define BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_PARAMS_DEFAULT_COUNT_(params) \
- BOOST_PP_LIST_FOLD_LEFT( \
- BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_PARAMS_DEFAULT_OP_, \
- 0 /* start with defaults_count to 0 */, params)
- // PUBLIC //
- // Expand: pp-list of param-traits (no bound variables).
- #define BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_PARAMS(decl_traits) \
- BOOST_PP_TUPLE_ELEM(BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_INDEX_MAX, \
- BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_INDEX_PARAMS, decl_traits)
- // Expand: number of parameters with default values (0 if no default).
- #define BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_PARAMS_DEFAULT_COUNT( \
- decl_traits) \
- BOOST_PP_IIF(BOOST_PP_LIST_IS_CONS( \
- BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_PARAMS(decl_traits)), \
- BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_PARAMS_DEFAULT_COUNT_ \
- , \
- 0 BOOST_PP_TUPLE_EAT(1) \
- )(BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_PARAMS(decl_traits))
- #endif // #include guard
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