projects / ceph.git / blame
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|---|---|---|
| 7c673cae FG |
1 | |
| 2 | // Copyright (C) 2009-2012 Lorenzo Caminiti | |
| 3 | // Distributed under the Boost Software License, Version 1.0 | |
| 4 | // (see accompanying file LICENSE_1_0.txt or a copy at | |
| 5 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 6 | // Home at http://www.boost.org/libs/local_function | |
| 7 | ||
| 8 | #ifndef BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_VALIDATE_RETURN_COUNT_HPP_ | |
| 9 | #define BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_VALIDATE_RETURN_COUNT_HPP_ | |
| 10 | ||
| 11 | #include <boost/local_function/aux_/preprocessor/traits/decl_/set_error.hpp> | |
| 12 | #include <boost/local_function/aux_/preprocessor/traits/decl_returns.hpp> | |
| 13 | #include <boost/preprocessor/control/iif.hpp> | |
| 14 | #include <boost/preprocessor/facilities/empty.hpp> | |
| 15 | #include <boost/preprocessor/tuple/eat.hpp> | |
| 16 | #include <boost/preprocessor/comparison/greater.hpp> | |
| 17 | #include <boost/preprocessor/list/size.hpp> | |
| 18 | ||
| 19 | // PRIVATE // | |
| 20 | ||
| 21 | #define BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_VALIDATE_RETURN_COUNT( \ | |
| 22 | decl_traits) \ | |
| 23 | BOOST_PP_IIF(BOOST_PP_GREATER(BOOST_PP_LIST_SIZE( \ | |
| 24 | BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_RETURNS(decl_traits)), 1), \ | |
| 25 | BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_SET_ERROR \ | |
| 26 | , /* else do nothing (keeping previous error, if any) */ \ | |
| 27 | decl_traits BOOST_PP_TUPLE_EAT(2) \ | |
| 28 | )(decl_traits, /* trailing `EMPTY` because error might not be present */ \ | |
| 29 | ERROR_cannot_specify_more_than_one_return_type BOOST_PP_EMPTY) | |
| 30 | ||
| 31 | #endif // #include guard | |
| 32 |