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1 /*=============================================================================
2     Copyright (c) 2013-2014 Damien Buhl
3 
4     Distributed under the Boost Software License, Version 1.0. (See accompanying
5     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 ==============================================================================*/
7 
8 #ifndef BOOST_FUSION_ADAPTED_STRUCT_DETAIL_ADAPT_BASE_ATTR_FILLER_HPP
9 #define BOOST_FUSION_ADAPTED_STRUCT_DETAIL_ADAPT_BASE_ATTR_FILLER_HPP
10 
11 #include <boost/config.hpp>
12 
13 #include <boost/fusion/adapted/struct/detail/adapt_auto.hpp>
14 #include <boost/fusion/adapted/struct/detail/preprocessor/is_seq.hpp>
15 
16 #include <boost/mpl/aux_/preprocessor/token_equal.hpp>
17 
18 #include <boost/preprocessor/config/config.hpp>
19 #include <boost/preprocessor/control/iif.hpp>
20 #include <boost/preprocessor/control/expr_iif.hpp>
21 #include <boost/preprocessor/logical/compl.hpp>
22 #include <boost/preprocessor/tuple/elem.hpp>
23 #include <boost/preprocessor/seq/for_each.hpp>
24 #include <boost/preprocessor/seq/push_front.hpp>
25 #include <boost/preprocessor/facilities/expand.hpp>
26 #include <boost/preprocessor/facilities/is_empty.hpp>
27 
28 
29 #define BOOST_FUSION_ADAPT_STRUCT_FILLER_0(X, Y)                                \
30     BOOST_FUSION_ADAPT_STRUCT_WRAP_ATTR(X,Y)                                    \
31     BOOST_FUSION_ADAPT_STRUCT_FILLER_1
32 
33 #define BOOST_FUSION_ADAPT_STRUCT_FILLER_1(X, Y)                                \
34     BOOST_FUSION_ADAPT_STRUCT_WRAP_ATTR(X,Y)                                    \
35     BOOST_FUSION_ADAPT_STRUCT_FILLER_0
36 
37 #define BOOST_FUSION_ADAPT_STRUCT_FILLER_0_END
38 #define BOOST_FUSION_ADAPT_STRUCT_FILLER_1_END
39 
40 #define BOOST_FUSION_ADAPT_STRUCT_WRAP_ATTR(X, Y)                               \
41     BOOST_PP_IIF(BOOST_MPL_PP_TOKEN_EQUAL(auto, BOOST_PP_EXPAND(X)),            \
42       ((1, (Y))),                                                               \
43       ((2, (X,Y)))                                                              \
44     )
45 
46 #define BOOST_FUSION_ADAPT_STRUCT_WRAPPEDATTR_SIZE(ATTRIBUTE)                   \
47   BOOST_PP_TUPLE_ELEM(2, 0, ATTRIBUTE)
48 
49 #define BOOST_FUSION_ADAPT_STRUCT_WRAPPEDATTR(ATTRIBUTE)                        \
50   BOOST_PP_TUPLE_ELEM(2, 1, ATTRIBUTE)
51 
52 
53 #if BOOST_PP_VARIADICS
54 
55 #   define BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER_OP(r, unused, elem)      \
56         BOOST_PP_IIF(BOOST_FUSION_PP_IS_SEQ(elem),                              \
57             BOOST_PP_CAT(BOOST_FUSION_ADAPT_STRUCT_FILLER_0 elem ,_END),        \
58             BOOST_PP_EXPR_IIF(BOOST_PP_COMPL(BOOST_PP_IS_EMPTY(elem)),          \
59                 BOOST_FUSION_ADAPT_STRUCT_WRAP_ATTR(auto, elem)))
60 
61 #   define BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER(VA_ARGS_SEQ)             \
62         BOOST_PP_SEQ_PUSH_FRONT(                                                \
63             BOOST_PP_SEQ_FOR_EACH(                                              \
64                 BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER_OP,                 \
65                 unused, VA_ARGS_SEQ),                                           \
66             (0,0))
67 
68 #endif // BOOST_PP_VARIADICS
69 
70 #endif
71