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boost_preprocessor/include/boost/preprocessor/seq/elem.hpp
2020-07-27 20:59:29 -04:00

65 lines
2.6 KiB
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# /* **************************************************************************
# * *
# * (C) Copyright Paul Mensonides 2002.
# * 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_SEQ_ELEM_HPP
# define BOOST_PREPROCESSOR_SEQ_ELEM_HPP
#
# include <boost/preprocessor/cat.hpp>
# include <boost/preprocessor/config/config.hpp>
# include <boost/preprocessor/facilities/empty.hpp>
#
# /* BOOST_PP_SEQ_ELEM */
#
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
# define BOOST_PP_SEQ_ELEM(i, seq) BOOST_PP_SEQ_ELEM_I(i, seq)
# else
# define BOOST_PP_SEQ_ELEM(i, seq) BOOST_PP_SEQ_ELEM_I((i, seq))
# endif
#
# if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
# define BOOST_PP_SEQ_ELEM_I(i, seq) BOOST_PP_SEQ_ELEM_II((BOOST_PP_SEQ_ELEM_ ## i seq))
# define BOOST_PP_SEQ_ELEM_II(res) BOOST_PP_SEQ_ELEM_IV(BOOST_PP_SEQ_ELEM_III res)
# define BOOST_PP_SEQ_ELEM_III(x, _) x BOOST_PP_EMPTY()
# define BOOST_PP_SEQ_ELEM_IV(x) x
# elif BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
# define BOOST_PP_SEQ_ELEM_I(par) BOOST_PP_SEQ_ELEM_II ## par
# define BOOST_PP_SEQ_ELEM_II(i, seq) BOOST_PP_SEQ_ELEM_III(BOOST_PP_SEQ_ELEM_ ## i ## seq)
# define BOOST_PP_SEQ_ELEM_III(im) BOOST_PP_SEQ_ELEM_IV(im)
# define BOOST_PP_SEQ_ELEM_IV(x, _) x
# else
# if defined(__IBMC__) || defined(__IBMCPP__)
# define BOOST_PP_SEQ_ELEM_I(i, seq) BOOST_PP_SEQ_ELEM_II(BOOST_PP_CAT(BOOST_PP_SEQ_ELEM_ ## i, seq))
# else
# define BOOST_PP_SEQ_ELEM_I(i, seq) BOOST_PP_SEQ_ELEM_II(BOOST_PP_SEQ_ELEM_ ## i seq)
# endif
# define BOOST_PP_SEQ_ELEM_II(im) BOOST_PP_SEQ_ELEM_III(im)
# define BOOST_PP_SEQ_ELEM_III(x, _) x
# endif
#
# include <boost/preprocessor/config/limits.hpp>
#
# if BOOST_PP_LIMIT_SEQ == 256
# include <boost/preprocessor/seq/limits/elem_256.hpp>
# elif BOOST_PP_LIMIT_SEQ == 512
# include <boost/preprocessor/seq/limits/elem_256.hpp>
# include <boost/preprocessor/seq/limits/elem_512.hpp>
# elif BOOST_PP_LIMIT_SEQ == 1024
# include <boost/preprocessor/seq/limits/elem_256.hpp>
# include <boost/preprocessor/seq/limits/elem_512.hpp>
# include <boost/preprocessor/seq/limits/elem_1024.hpp>
# else
# error Incorrect value for the BOOST_PP_LIMIT_SEQ limit
# endif
#
# endif