boost/preprocessor/variadic/size.hpp
# /* ************************************************************************** # * * # * (C) Copyright Edward Diener 2011. * # * (C) Copyright Paul Mensonides 2011. * # * 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) * # * * # ************************************************************************** */ # # /* Revised by Edward Diener (2020) */ # # /* See http://www.boost.org for most recent version. */ # # ifndef BOOST_PREPROCESSOR_VARIADIC_SIZE_HPP # define BOOST_PREPROCESSOR_VARIADIC_SIZE_HPP # # include <boost/preprocessor/cat.hpp> # include <boost/preprocessor/config/config.hpp> # include <boost/preprocessor/control/iif.hpp> # include <boost/preprocessor/facilities/check_empty.hpp> # # /* BOOST_PP_VARIADIC_SIZE */ # # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT() # # if BOOST_PP_VARIADIC_HAS_OPT() # if BOOST_PP_VARIADICS_MSVC # define BOOST_PP_VARIADIC_SIZE_NOT_EMPTY(...) BOOST_PP_CAT(BOOST_PP_VARIADIC_SIZE_I(__VA_ARGS__, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1,),) # else # define BOOST_PP_VARIADIC_SIZE_NOT_EMPTY(...) BOOST_PP_VARIADIC_SIZE_I(__VA_ARGS__, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1,) # endif # define BOOST_PP_VARIADIC_SIZE_EMPTY(...) 0 # define BOOST_PP_VARIADIC_SIZE(...) BOOST_PP_IIF(BOOST_PP_CHECK_EMPTY(__VA_ARGS__),BOOST_PP_VARIADIC_SIZE_EMPTY,BOOST_PP_VARIADIC_SIZE_NOT_EMPTY)(__VA_ARGS__) # elif BOOST_PP_VARIADICS_MSVC # define BOOST_PP_VARIADIC_SIZE(...) BOOST_PP_CAT(BOOST_PP_VARIADIC_SIZE_I(__VA_ARGS__, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1,),) # else # define BOOST_PP_VARIADIC_SIZE(...) BOOST_PP_VARIADIC_SIZE_I(__VA_ARGS__, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1,) # endif # define BOOST_PP_VARIADIC_SIZE_I(e0, e1, e2, e3, e4, e5, e6, e7, e8, e9, e10, e11, e12, e13, e14, e15, e16, e17, e18, e19, e20, e21, e22, e23, e24, e25, e26, e27, e28, e29, e30, e31, e32, e33, e34, e35, e36, e37, e38, e39, e40, e41, e42, e43, e44, e45, e46, e47, e48, e49, e50, e51, e52, e53, e54, e55, e56, e57, e58, e59, e60, e61, e62, e63, size, ...) size # # else # # if BOOST_PP_VARIADIC_HAS_OPT() # define BOOST_PP_VARIADIC_SIZE_EMPTY(...) 0 # define BOOST_PP_VARIADIC_SIZE(...) BOOST_PP_IIF(BOOST_PP_CHECK_EMPTY(__VA_ARGS__),BOOST_PP_VARIADIC_SIZE_EMPTY,BOOST_PP_VARIADIC_DO_SIZE)(__VA_ARGS__) # else # define BOOST_PP_VARIADIC_SIZE(...) BOOST_PP_VARIADIC_DO_SIZE(__VA_ARGS__) # endif # # include <boost/preprocessor/config/limits.hpp> # # if BOOST_PP_LIMIT_VARIADIC == 64 # include <boost/preprocessor/variadic/limits/size_64.hpp> # elif BOOST_PP_LIMIT_VARIADIC == 128 # include <boost/preprocessor/variadic/limits/size_128.hpp> # elif BOOST_PP_LIMIT_VARIADIC == 256 # include <boost/preprocessor/variadic/limits/size_256.hpp> # else # error Incorrect value for the BOOST_PP_LIMIT_TUPLE limit # endif # # endif # # endif