[857] | 1 | # /* Copyright (C) 2001
|
---|
| 2 | # * Housemarque Oy
|
---|
| 3 | # * http://www.housemarque.com
|
---|
| 4 | # *
|
---|
| 5 | # * Distributed under the Boost Software License, Version 1.0. (See
|
---|
| 6 | # * accompanying file LICENSE_1_0.txt or copy at
|
---|
| 7 | # * http://www.boost.org/LICENSE_1_0.txt)
|
---|
| 8 | # */
|
---|
| 9 | #
|
---|
| 10 | # /* Revised by Paul Mensonides (2002) */
|
---|
| 11 | #
|
---|
| 12 | # /* See http://www.boost.org for most recent version. */
|
---|
| 13 | #
|
---|
| 14 | # ifndef BOOST_PREPROCESSOR_LIST_FIRST_N_HPP
|
---|
| 15 | # define BOOST_PREPROCESSOR_LIST_FIRST_N_HPP
|
---|
| 16 | #
|
---|
| 17 | # include <boost/preprocessor/arithmetic/dec.hpp>
|
---|
| 18 | # include <boost/preprocessor/config/config.hpp>
|
---|
| 19 | # include <boost/preprocessor/control/while.hpp>
|
---|
| 20 | # include <boost/preprocessor/list/adt.hpp>
|
---|
| 21 | # include <boost/preprocessor/list/reverse.hpp>
|
---|
| 22 | # include <boost/preprocessor/tuple/elem.hpp>
|
---|
| 23 | # include <boost/preprocessor/tuple/rem.hpp>
|
---|
| 24 | #
|
---|
| 25 | # /* BOOST_PP_LIST_FIRST_N */
|
---|
| 26 | #
|
---|
| 27 | # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
|
---|
| 28 | # define BOOST_PP_LIST_FIRST_N(count, list) BOOST_PP_LIST_REVERSE(BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_WHILE(BOOST_PP_LIST_FIRST_N_P, BOOST_PP_LIST_FIRST_N_O, (count, list, BOOST_PP_NIL))))
|
---|
| 29 | # else
|
---|
| 30 | # define BOOST_PP_LIST_FIRST_N(count, list) BOOST_PP_LIST_FIRST_N_I(count, list)
|
---|
| 31 | # define BOOST_PP_LIST_FIRST_N_I(count, list) BOOST_PP_LIST_REVERSE(BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_WHILE(BOOST_PP_LIST_FIRST_N_P, BOOST_PP_LIST_FIRST_N_O, (count, list, BOOST_PP_NIL))))
|
---|
| 32 | # endif
|
---|
| 33 | #
|
---|
| 34 | # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
|
---|
| 35 | # define BOOST_PP_LIST_FIRST_N_P(d, data) BOOST_PP_TUPLE_ELEM(3, 0, data)
|
---|
| 36 | # else
|
---|
| 37 | # define BOOST_PP_LIST_FIRST_N_P(d, data) BOOST_PP_LIST_FIRST_N_P_I data
|
---|
| 38 | # define BOOST_PP_LIST_FIRST_N_P_I(c, l, nl) c
|
---|
| 39 | # endif
|
---|
| 40 | #
|
---|
| 41 | # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
|
---|
| 42 | # define BOOST_PP_LIST_FIRST_N_O(d, data) BOOST_PP_LIST_FIRST_N_O_D data
|
---|
| 43 | # else
|
---|
| 44 | # define BOOST_PP_LIST_FIRST_N_O(d, data) BOOST_PP_LIST_FIRST_N_O_D(BOOST_PP_TUPLE_ELEM(3, 0, data), BOOST_PP_TUPLE_ELEM(3, 1, data), BOOST_PP_TUPLE_ELEM(3, 2, data))
|
---|
| 45 | # endif
|
---|
| 46 | #
|
---|
| 47 | # define BOOST_PP_LIST_FIRST_N_O_D(c, l, nl) (BOOST_PP_DEC(c), BOOST_PP_LIST_REST(l), (BOOST_PP_LIST_FIRST(l), nl))
|
---|
| 48 | #
|
---|
| 49 | # /* BOOST_PP_LIST_FIRST_N_D */
|
---|
| 50 | #
|
---|
| 51 | # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
|
---|
| 52 | # define BOOST_PP_LIST_FIRST_N_D(d, count, list) BOOST_PP_LIST_REVERSE_D(d, BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_WHILE_ ## d(BOOST_PP_LIST_FIRST_N_P, BOOST_PP_LIST_FIRST_N_O, (count, list, BOOST_PP_NIL))))
|
---|
| 53 | # else
|
---|
| 54 | # define BOOST_PP_LIST_FIRST_N_D(d, count, list) BOOST_PP_LIST_FIRST_N_D_I(d, count, list)
|
---|
| 55 | # define BOOST_PP_LIST_FIRST_N_D_I(d, count, list) BOOST_PP_LIST_REVERSE_D(d, BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_WHILE_ ## d(BOOST_PP_LIST_FIRST_N_P, BOOST_PP_LIST_FIRST_N_O, (count, list, BOOST_PP_NIL))))
|
---|
| 56 | # endif
|
---|
| 57 | #
|
---|
| 58 | # endif
|
---|