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Diffstat (limited to 'boost/test/detail/pp_variadic.hpp')
| -rw-r--r-- | boost/test/detail/pp_variadic.hpp | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/boost/test/detail/pp_variadic.hpp b/boost/test/detail/pp_variadic.hpp new file mode 100644 index 0000000000..3d31cd1705 --- /dev/null +++ b/boost/test/detail/pp_variadic.hpp @@ -0,0 +1,49 @@ +// (C) Copyright Gennadiy Rozental 2015. +// 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) + +// See http://www.boost.org/libs/test for the library home page. +// +//!@file +//!@brief few helpers for working with variadic macros +// *************************************************************************** + +#ifndef BOOST_TEST_PP_VARIADIC_HPP_021515GER +#define BOOST_TEST_PP_VARIADIC_HPP_021515GER + +// Boost +#include <boost/preprocessor/control/iif.hpp> +#include <boost/preprocessor/comparison/equal.hpp> +#include <boost/preprocessor/variadic/size.hpp> + +//____________________________________________________________________________// + +#if BOOST_PP_VARIADICS + +#if BOOST_PP_VARIADICS_MSVC +# define BOOST_TEST_INVOKE_VARIADIC( tool, ... ) BOOST_PP_CAT( tool (__VA_ARGS__), ) +#else +# define BOOST_TEST_INVOKE_VARIADIC( tool, ... ) tool (__VA_ARGS__) +#endif + +//____________________________________________________________________________// + +/// if sizeof(__VA_ARGS__) == N: F1(__VA_ARGS__) +/// else: F2(__VA_ARGS__) +#define BOOST_TEST_INVOKE_IF_N_ARGS( N, F1, F2, ... ) \ + BOOST_TEST_INVOKE_VARIADIC( \ + BOOST_PP_IIF( \ + BOOST_PP_EQUAL(BOOST_PP_VARIADIC_SIZE(__VA_ARGS__), N), \ + F1, \ + F2), \ + __VA_ARGS__ ) \ +/**/ + +//____________________________________________________________________________// + +#endif /* BOOST_PP_VARIADICS */ + +#endif // BOOST_TEST_PP_VARIADIC_HPP_021515GER + +// EOF |