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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)
# * *
# ************************************************************************** */
#
# /* See http://www.boost.org for most recent version. */
#
# ifndef BOOST_PREPROCESSOR_SEQ_CAT_HPP
# define BOOST_PREPROCESSOR_SEQ_CAT_HPP
#
# include <boost/preprocessor/arithmetic/dec.hpp>
# include <boost/preprocessor/config/config.hpp>
# include <boost/preprocessor/control/if.hpp>
# include <boost/preprocessor/seq/fold_left.hpp>
# include <boost/preprocessor/seq/seq.hpp>
# include <boost/preprocessor/seq/size.hpp>
# include <boost/preprocessor/tuple/eat.hpp>
#
# /* BOOST_PP_SEQ_CAT */
#
# define BOOST_PP_SEQ_CAT(seq) \
BOOST_PP_IF( \
BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(seq)), \
BOOST_PP_SEQ_CAT_I, \
BOOST_PP_SEQ_HEAD(seq) BOOST_PP_TUPLE_EAT_1 \
)(seq) \
/**/
# define BOOST_PP_SEQ_CAT_I(seq) BOOST_PP_SEQ_FOLD_LEFT(BOOST_PP_SEQ_CAT_O, BOOST_PP_SEQ_HEAD(seq), BOOST_PP_SEQ_TAIL(seq))
#
# define BOOST_PP_SEQ_CAT_O(s, st, elem) BOOST_PP_SEQ_CAT_O_I(st, elem)
# define BOOST_PP_SEQ_CAT_O_I(a, b) a ## b
#
# /* BOOST_PP_SEQ_CAT_S */
#
# define BOOST_PP_SEQ_CAT_S(s, seq) \
BOOST_PP_IF( \
BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(seq)), \
BOOST_PP_SEQ_CAT_S_I, \
BOOST_PP_SEQ_HEAD(seq) BOOST_PP_TUPLE_EAT_2 \
)(s, seq) \
/**/
# define BOOST_PP_SEQ_CAT_S_I(s, seq) BOOST_PP_SEQ_FOLD_LEFT_ ## s(BOOST_PP_SEQ_CAT_O, BOOST_PP_SEQ_HEAD(seq), BOOST_PP_SEQ_TAIL(seq))
#
# endif