50 lines
1.8 KiB
C++
50 lines
1.8 KiB
C++
// (C) Copyright Gennadiy Rozental 2001.
|
|
// 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
|