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// (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
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