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_FOR_EACH_I_HPP
13# define BOOST_PREPROCESSOR_SEQ_FOR_EACH_I_HPP
14#
15# include <boost/preprocessor/arithmetic/dec.hpp>
16# include <boost/preprocessor/arithmetic/inc.hpp>
17# include <boost/preprocessor/config/config.hpp>
18# include <boost/preprocessor/control/if.hpp>
19# include <boost/preprocessor/control/iif.hpp>
20# include <boost/preprocessor/repetition/for.hpp>
21# include <boost/preprocessor/seq/seq.hpp>
22# include <boost/preprocessor/seq/size.hpp>
23# include <boost/preprocessor/seq/detail/is_empty.hpp>
24# include <boost/preprocessor/tuple/elem.hpp>
25# include <boost/preprocessor/tuple/rem.hpp>
26#
27# /* BOOST_PP_SEQ_FOR_EACH_I */
28#
29# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
30# define BOOST_PP_SEQ_FOR_EACH_I(macro, data, seq) BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK(macro, data, seq)
31# else
32# define BOOST_PP_SEQ_FOR_EACH_I(macro, data, seq) BOOST_PP_SEQ_FOR_EACH_I_I(macro, data, seq)
33# define BOOST_PP_SEQ_FOR_EACH_I_I(macro, data, seq) BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK(macro, data, seq)
34# endif
35#
36# define BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK_EXEC(macro, data, seq) BOOST_PP_FOR((macro, data, seq, 0, BOOST_PP_SEQ_SIZE(seq)), BOOST_PP_SEQ_FOR_EACH_I_P, BOOST_PP_SEQ_FOR_EACH_I_O, BOOST_PP_SEQ_FOR_EACH_I_M)
37# define BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK_EMPTY(macro, data, seq)
38#
39# define BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK(macro, data, seq) \
40 BOOST_PP_IIF \
41 ( \
42 BOOST_PP_SEQ_DETAIL_IS_NOT_EMPTY(seq), \
43 BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK_EXEC, \
44 BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK_EMPTY \
45 ) \
46 (macro, data, seq) \
47/**/
48#
49# define BOOST_PP_SEQ_FOR_EACH_I_P(r, x) BOOST_PP_TUPLE_ELEM(5, 4, x)
50#
51# if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT()
52# define BOOST_PP_SEQ_FOR_EACH_I_O(r, x) BOOST_PP_SEQ_FOR_EACH_I_O_I x
53# else
54# define BOOST_PP_SEQ_FOR_EACH_I_O(r, x) BOOST_PP_SEQ_FOR_EACH_I_O_I(BOOST_PP_TUPLE_ELEM(5, 0, x), BOOST_PP_TUPLE_ELEM(5, 1, x), BOOST_PP_TUPLE_ELEM(5, 2, x), BOOST_PP_TUPLE_ELEM(5, 3, x), BOOST_PP_TUPLE_ELEM(5, 4, x))
55# endif
56#
57# define BOOST_PP_SEQ_FOR_EACH_I_O_I(macro, data, seq, i, sz) \
58 BOOST_PP_SEQ_FOR_EACH_I_O_I_DEC(macro, data, seq, i, BOOST_PP_DEC(sz)) \
59/**/
60# define BOOST_PP_SEQ_FOR_EACH_I_O_I_DEC(macro, data, seq, i, sz) \
61 ( \
62 macro, \
63 data, \
64 BOOST_PP_IF \
65 ( \
66 sz, \
67 BOOST_PP_SEQ_FOR_EACH_I_O_I_TAIL, \
68 BOOST_PP_SEQ_FOR_EACH_I_O_I_NIL \
69 ) \
70 (seq), \
71 BOOST_PP_INC(i), \
72 sz \
73 ) \
74/**/
75# define BOOST_PP_SEQ_FOR_EACH_I_O_I_TAIL(seq) BOOST_PP_SEQ_TAIL(seq)
76# define BOOST_PP_SEQ_FOR_EACH_I_O_I_NIL(seq) BOOST_PP_NIL
77#
78# if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT()
79# define BOOST_PP_SEQ_FOR_EACH_I_M(r, x) BOOST_PP_SEQ_FOR_EACH_I_M_IM(r, BOOST_PP_TUPLE_REM_5 x)
80# define BOOST_PP_SEQ_FOR_EACH_I_M_IM(r, im) BOOST_PP_SEQ_FOR_EACH_I_M_I(r, im)
81# else
82# define BOOST_PP_SEQ_FOR_EACH_I_M(r, x) BOOST_PP_SEQ_FOR_EACH_I_M_I(r, BOOST_PP_TUPLE_ELEM(5, 0, x), BOOST_PP_TUPLE_ELEM(5, 1, x), BOOST_PP_TUPLE_ELEM(5, 2, x), BOOST_PP_TUPLE_ELEM(5, 3, x), BOOST_PP_TUPLE_ELEM(5, 4, x))
83# endif
84#
85# define BOOST_PP_SEQ_FOR_EACH_I_M_I(r, macro, data, seq, i, sz) macro(r, data, i, BOOST_PP_SEQ_HEAD(seq))
86#
87# /* BOOST_PP_SEQ_FOR_EACH_I_R */
88#
89# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
90# define BOOST_PP_SEQ_FOR_EACH_I_R(r, macro, data, seq) BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK(r, macro, data, seq)
91# else
92# define BOOST_PP_SEQ_FOR_EACH_I_R(r, macro, data, seq) BOOST_PP_SEQ_FOR_EACH_I_R_I(r, macro, data, seq)
93# define BOOST_PP_SEQ_FOR_EACH_I_R_I(r, macro, data, seq) BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK(r, macro, data, seq)
94# endif
95#
96# define BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK_EXEC(r, macro, data, seq) BOOST_PP_FOR_ ## r((macro, data, seq, 0, BOOST_PP_SEQ_SIZE(seq)), BOOST_PP_SEQ_FOR_EACH_I_P, BOOST_PP_SEQ_FOR_EACH_I_O, BOOST_PP_SEQ_FOR_EACH_I_M)
97# define BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK_EMPTY(r, macro, data, seq)
98#
99# define BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK(r, macro, data, seq) \
100 BOOST_PP_IIF \
101 ( \
102 BOOST_PP_SEQ_DETAIL_IS_NOT_EMPTY(seq), \
103 BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK_EXEC, \
104 BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK_EMPTY \
105 ) \
106 (r, macro, data, seq) \
107/**/
108#
109# endif
110

source code of include/boost/preprocessor/seq/for_each_i.hpp