preprocessor/seq/for_each.hpp

0001 # /* **************************************************************************
0002 #  *                                                                          *
0003 #  *     (C) Copyright Paul Mensonides 2002.
0004 #  *     Distributed under the Boost Software License, Version 1.0. (See
0005 #  *     accompanying file LICENSE_1_0.txt or copy at
0006 #  *     http://www.boost.org/LICENSE_1_0.txt)
0007 #  *                                                                          *
0008 #  ************************************************************************** */
0009 0010 ">#
0011 # /* See http://www.boost.org for most recent version. */
0012 0013 ">#
0014 # ifndef BOOST_PREPROCESSOR_SEQ_FOR_EACH_HPP
0015 # define BOOST_PREPROCESSOR_SEQ_FOR_EACH_HPP
0016 0017 ">#
0018 # include <boost/preprocessor/arithmetic/dec.hpp>
0019 # include <boost/preprocessor/config/config.hpp>
0020 # include <boost/preprocessor/control/if.hpp>
0021 # include <boost/preprocessor/control/iif.hpp>
0022 # include <boost/preprocessor/repetition/for.hpp>
0023 # include <boost/preprocessor/seq/seq.hpp>
0024 # include <boost/preprocessor/seq/size.hpp>
0025 # include <boost/preprocessor/seq/detail/is_empty.hpp>
0026 # include <boost/preprocessor/tuple/elem.hpp>
0027 # include <boost/preprocessor/tuple/rem.hpp>
0028 0029 ">#
0030 # /* BOOST_PP_SEQ_FOR_EACH */
0031 0032 ">#
0033 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
0034 #    define BOOST_PP_SEQ_FOR_EACH(macro, data, seq) BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK(macro, data, seq)
0035 # else
0036 #    define BOOST_PP_SEQ_FOR_EACH(macro, data, seq) BOOST_PP_SEQ_FOR_EACH_D(macro, data, seq)
0037 #    define BOOST_PP_SEQ_FOR_EACH_D(macro, data, seq) BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK(macro, data, seq)
0038 # endif
0039 0040 ">#
0041 #    define BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK_EXEC(macro, data, seq) BOOST_PP_FOR((macro, data, seq, BOOST_PP_SEQ_SIZE(seq)), BOOST_PP_SEQ_FOR_EACH_P, BOOST_PP_SEQ_FOR_EACH_O, BOOST_PP_SEQ_FOR_EACH_M)
0042 #    define BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK_EMPTY(macro, data, seq)
0043 0044 ">#
0045 #    define BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK(macro, data, seq) \
0046         BOOST_PP_IIF \
0047             ( \
0048             BOOST_PP_SEQ_DETAIL_IS_NOT_EMPTY(seq), \
0049             BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK_EXEC, \
0050             BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK_EMPTY \
0051             ) \
0052         (macro, data, seq) \
0053 /**/
0054 0055 ">#
0056 # define BOOST_PP_SEQ_FOR_EACH_P(r, x) BOOST_PP_TUPLE_ELEM(4, 3, x)
0057 0058 ">#
0059 # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT()
0060 #    define BOOST_PP_SEQ_FOR_EACH_O(r, x) BOOST_PP_SEQ_FOR_EACH_O_I x
0061 # else
0062 #    define BOOST_PP_SEQ_FOR_EACH_O(r, x) BOOST_PP_SEQ_FOR_EACH_O_I(BOOST_PP_TUPLE_ELEM(4, 0, x), BOOST_PP_TUPLE_ELEM(4, 1, x), BOOST_PP_TUPLE_ELEM(4, 2, x), BOOST_PP_TUPLE_ELEM(4, 3, x))
0063 # endif
0064 0065 ">#
0066 # define BOOST_PP_SEQ_FOR_EACH_O_I(macro, data, seq, sz) \
0067     BOOST_PP_SEQ_FOR_EACH_O_I_DEC(macro, data, seq, BOOST_PP_DEC(sz)) \
0068 /**/
0069 # define BOOST_PP_SEQ_FOR_EACH_O_I_DEC(macro, data, seq, sz) \
0070     ( \
0071     macro, \
0072     data, \
0073     BOOST_PP_IF \
0074         ( \
0075         sz, \
0076         BOOST_PP_SEQ_FOR_EACH_O_I_TAIL, \
0077         BOOST_PP_SEQ_FOR_EACH_O_I_NIL \
0078         ) \
0079     (seq), \
0080     sz \
0081     ) \
0082 /**/
0083 # define BOOST_PP_SEQ_FOR_EACH_O_I_TAIL(seq) BOOST_PP_SEQ_TAIL(seq)
0084 # define BOOST_PP_SEQ_FOR_EACH_O_I_NIL(seq) BOOST_PP_NIL
0085 0086 ">#
0087 # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT()
0088 #    define BOOST_PP_SEQ_FOR_EACH_M(r, x) BOOST_PP_SEQ_FOR_EACH_M_IM(r, BOOST_PP_TUPLE_REM_4 x)
0089 #    define BOOST_PP_SEQ_FOR_EACH_M_IM(r, im) BOOST_PP_SEQ_FOR_EACH_M_I(r, im)
0090 # else
0091 #    define BOOST_PP_SEQ_FOR_EACH_M(r, x) BOOST_PP_SEQ_FOR_EACH_M_I(r, BOOST_PP_TUPLE_ELEM(4, 0, x), BOOST_PP_TUPLE_ELEM(4, 1, x), BOOST_PP_TUPLE_ELEM(4, 2, x), BOOST_PP_TUPLE_ELEM(4, 3, x))
0092 # endif
0093 0094 ">#
0095 # define BOOST_PP_SEQ_FOR_EACH_M_I(r, macro, data, seq, sz) macro(r, data, BOOST_PP_SEQ_HEAD(seq))
0096 0097 ">#
0098 # /* BOOST_PP_SEQ_FOR_EACH_R */
0099 0100 ">#
0101 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
0102 #    define BOOST_PP_SEQ_FOR_EACH_R(r, macro, data, seq) BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK_R(r, macro, data, seq)
0103 # else
0104 #    define BOOST_PP_SEQ_FOR_EACH_R(r, macro, data, seq) BOOST_PP_SEQ_FOR_EACH_R_I(r, macro, data, seq)
0105 #    define BOOST_PP_SEQ_FOR_EACH_R_I(r, macro, data, seq) BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK_R(r, macro, data, seq)
0106 # endif
0107 0108 ">#
0109 #    define BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK_EXEC_R(r, macro, data, seq) BOOST_PP_FOR_ ## r((macro, data, seq, BOOST_PP_SEQ_SIZE(seq)), BOOST_PP_SEQ_FOR_EACH_P, BOOST_PP_SEQ_FOR_EACH_O, BOOST_PP_SEQ_FOR_EACH_M)
0110 #    define BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK_EMPTY_R(r, macro, data, seq)
0111 0112 ">#
0113 #    define BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK_R(r, macro, data, seq) \
0114         BOOST_PP_IIF \
0115             ( \
0116             BOOST_PP_SEQ_DETAIL_IS_NOT_EMPTY(seq), \
0117             BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK_EXEC_R, \
0118             BOOST_PP_SEQ_FOR_EACH_DETAIL_CHECK_EMPTY_R \
0119             ) \
0120         (r, macro, data, seq) \
0121 /**/
0122 0123 ">#
0124 # endif