// (C) Copyright Edward Diener 2015 // Use, modification and distribution are subject to 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). #if !defined(BOOST_VMD_SEQ_TO_ARRAY_HPP) #define BOOST_VMD_SEQ_TO_ARRAY_HPP #include <boost/vmd/detail/setup.hpp> #if BOOST_PP_VARIADICS #include <boost/preprocessor/control/iif.hpp> #include <boost/preprocessor/seq/to_array.hpp> #include <boost/vmd/identity.hpp> #include <boost/vmd/is_empty.hpp> /* The succeeding comments in this file are in doxygen format. */ /** \file */ /** \def BOOST_VMD_SEQ_TO_ARRAY(seq) \brief converts a seq to an array. seq = seq to be converted. If the seq is an empty seq it is converted to an array with 0 elements. Otherwise the seq is converted to an array with the same number of elements as the seq. */ #define BOOST_VMD_SEQ_TO_ARRAY(seq) \ BOOST_VMD_IDENTITY_RESULT \ ( \ BOOST_PP_IIF \ ( \ BOOST_VMD_IS_EMPTY(seq), \ BOOST_VMD_IDENTITY((0,())), \ BOOST_PP_SEQ_TO_ARRAY \ ) \ (seq) \ ) \ /**/ #endif /* BOOST_PP_VARIADICS */ #endif /* BOOST_VMD_SEQ_TO_ARRAY_HPP */