ext-boost/boost/preprocessor/seq/rest_n.hpp
2015-08-16 20:45:50 -03:00

47 lines
1.9 KiB
C++

# /* **************************************************************************
# * *
# * (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_REST_N_HPP
# define BOOST_PREPROCESSOR_SEQ_REST_N_HPP
#
# include <boost/preprocessor/arithmetic/inc.hpp>
# include <boost/preprocessor/comparison/not_equal.hpp>
# include <boost/preprocessor/config/config.hpp>
# include <boost/preprocessor/control/expr_iif.hpp>
# include <boost/preprocessor/facilities/identity.hpp>
# include <boost/preprocessor/logical/bitand.hpp>
# include <boost/preprocessor/seq/detail/is_empty.hpp>
# include <boost/preprocessor/seq/detail/split.hpp>
# include <boost/preprocessor/tuple/elem.hpp>
#
# /* BOOST_PP_SEQ_REST_N */
#
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
# define BOOST_PP_SEQ_REST_N(n, seq) BOOST_PP_SEQ_REST_N_DETAIL_EXEC(n, seq, BOOST_PP_SEQ_DETAIL_EMPTY_SIZE(seq))
# else
# define BOOST_PP_SEQ_REST_N(n, seq) BOOST_PP_SEQ_REST_N_I(n, seq)
# define BOOST_PP_SEQ_REST_N_I(n, seq) BOOST_PP_SEQ_REST_N_DETAIL_EXEC(n, seq, BOOST_PP_SEQ_DETAIL_EMPTY_SIZE(seq))
# endif
#
# define BOOST_PP_SEQ_REST_N_DETAIL_EXEC(n, seq, size) \
BOOST_PP_EXPR_IIF \
( \
BOOST_PP_BITAND \
( \
BOOST_PP_SEQ_DETAIL_IS_NOT_EMPTY_SIZE(size), \
BOOST_PP_NOT_EQUAL(n,size) \
), \
BOOST_PP_TUPLE_ELEM(2, 1, BOOST_PP_SEQ_SPLIT(BOOST_PP_INC(n), BOOST_PP_IDENTITY( (nil) seq )))() \
) \
/**/
#
# endif