| Jeff Thompson | a28eed8 | 2013-08-22 16:21:10 -0700 | [diff] [blame] | 1 | # /* ************************************************************************** |
| 2 | # * * |
| 3 | # * (C) Copyright Paul Mensonides 2002. |
| 4 | # * Distributed under the Boost Software License, Version 1.0. (See |
| 5 | # * accompanying file LICENSE_1_0.txt or copy at |
| 6 | # * http://www.boost.org/LICENSE_1_0.txt) |
| 7 | # * * |
| 8 | # ************************************************************************** */ |
| 9 | # |
| 10 | # /* See http://www.boost.org for most recent version. */ |
| 11 | # |
| 12 | # ifndef BOOST_PREPROCESSOR_SEQ_FIRST_N_HPP |
| 13 | # define BOOST_PREPROCESSOR_SEQ_FIRST_N_HPP |
| 14 | # |
| 15 | # include <ndnboost/preprocessor/config/config.hpp> |
| 16 | # include <ndnboost/preprocessor/control/if.hpp> |
| 17 | # include <ndnboost/preprocessor/seq/detail/split.hpp> |
| 18 | # include <ndnboost/preprocessor/tuple/eat.hpp> |
| 19 | # include <ndnboost/preprocessor/tuple/elem.hpp> |
| 20 | # |
| 21 | # /* BOOST_PP_SEQ_FIRST_N */ |
| 22 | # |
| 23 | # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() |
| 24 | # define BOOST_PP_SEQ_FIRST_N(n, seq) BOOST_PP_IF(n, BOOST_PP_TUPLE_ELEM, BOOST_PP_TUPLE_EAT_3)(2, 0, BOOST_PP_SEQ_SPLIT(n, seq (nil))) |
| 25 | # else |
| 26 | # define BOOST_PP_SEQ_FIRST_N(n, seq) BOOST_PP_SEQ_FIRST_N_I(n, seq) |
| 27 | # define BOOST_PP_SEQ_FIRST_N_I(n, seq) BOOST_PP_IF(n, BOOST_PP_TUPLE_ELEM, BOOST_PP_TUPLE_EAT_3)(2, 0, BOOST_PP_SEQ_SPLIT(n, seq (nil))) |
| 28 | # endif |
| 29 | # |
| 30 | # endif |