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Diffstat (limited to 'boost/fusion/adapted/adt/detail/adapt_base_attr_filler.hpp')
| -rw-r--r-- | boost/fusion/adapted/adt/detail/adapt_base_attr_filler.hpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/boost/fusion/adapted/adt/detail/adapt_base_attr_filler.hpp b/boost/fusion/adapted/adt/detail/adapt_base_attr_filler.hpp new file mode 100644 index 0000000000..09bd4014ed --- /dev/null +++ b/boost/fusion/adapted/adt/detail/adapt_base_attr_filler.hpp @@ -0,0 +1,90 @@ +/*============================================================================= + Copyright (c) 2013-2014 Damien Buhl + + Distributed under the Boost Software License, Version 1.0. (See accompanying + file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +==============================================================================*/ + +#ifndef BOOST_FUSION_ADAPTED_ADT_DETAIL_ADAPT_BASE_ATTR_FILLER_HPP +#define BOOST_FUSION_ADAPTED_ADT_DETAIL_ADAPT_BASE_ATTR_FILLER_HPP + +#include <boost/config.hpp> +#include <boost/fusion/adapted/struct/detail/preprocessor/is_seq.hpp> + +#include <boost/preprocessor/arithmetic/sub.hpp> +#include <boost/preprocessor/control/if.hpp> +#include <boost/preprocessor/logical/or.hpp> +#include <boost/preprocessor/empty.hpp> +#include <boost/preprocessor/tuple/size.hpp> +#include <boost/preprocessor/tuple/elem.hpp> +#include <boost/preprocessor/facilities/is_empty.hpp> +#include <boost/preprocessor/variadic/to_seq.hpp> +#include <boost/preprocessor/variadic/to_tuple.hpp> +#include <boost/preprocessor/variadic/elem.hpp> +#include <boost/preprocessor/seq/for_each.hpp> +#include <boost/preprocessor/seq/push_front.hpp> +#include <boost/preprocessor/seq/rest_n.hpp> + +#include <boost/preprocessor/tuple/reverse.hpp> + + +#define BOOST_FUSION_ADAPT_ADT_WRAPPEDATTR_SIZE(ATTRIBUTE) \ + BOOST_PP_TUPLE_ELEM(2, 0, ATTRIBUTE) + +#define BOOST_FUSION_ADAPT_ADT_WRAPPEDATTR(ATTRIBUTE) \ + BOOST_PP_TUPLE_ELEM(2, 1, ATTRIBUTE) + +#if BOOST_PP_VARIADICS + +# define BOOST_FUSION_ADAPT_ADT_FILLER_0(...) \ + BOOST_FUSION_ADAPT_ADT_FILLER(__VA_ARGS__) \ + BOOST_FUSION_ADAPT_ADT_FILLER_1 + +# define BOOST_FUSION_ADAPT_ADT_FILLER_1(...) \ + BOOST_FUSION_ADAPT_ADT_FILLER(__VA_ARGS__) \ + BOOST_FUSION_ADAPT_ADT_FILLER_0 + +# define BOOST_FUSION_ADAPT_ADT_FILLER_0_END +# define BOOST_FUSION_ADAPT_ADT_FILLER_1_END + +# define BOOST_FUSION_ADAPT_ADT_FILLER(...) \ + BOOST_PP_IF( \ + BOOST_PP_OR( \ + BOOST_PP_IS_EMPTY(BOOST_PP_VARIADIC_ELEM(0, __VA_ARGS__)), \ + BOOST_PP_IS_EMPTY(BOOST_PP_VARIADIC_ELEM(1, __VA_ARGS__))), \ + BOOST_FUSION_ADAPT_ADT_WRAP_ATTR( \ + BOOST_PP_VARIADIC_ELEM(2, __VA_ARGS__), \ + BOOST_FUSION_WORKAROUND_VARIADIC_EMPTINESS_LAST_ELEM(__VA_ARGS__) \ + ), \ + BOOST_FUSION_ADAPT_ADT_WRAP_ATTR(__VA_ARGS__)) + +# define BOOST_FUSION_ADAPT_ADT_WRAP_ATTR(...) \ + ((BOOST_PP_VARIADIC_SIZE(__VA_ARGS__), (__VA_ARGS__))) + +# define BOOST_FUSION_WORKAROUND_VARIADIC_EMPTINESS_LAST_ELEM(...) \ + BOOST_PP_SEQ_HEAD(BOOST_PP_SEQ_REST_N( \ + BOOST_PP_SUB(BOOST_PP_VARIADIC_SIZE(__VA_ARGS__), 1), \ + BOOST_PP_VARIADIC_TO_SEQ(__VA_ARGS__))) + +#else // BOOST_PP_VARIADICS + +# define BOOST_FUSION_ADAPT_ADT_FILLER_0(A, B, C, D) \ + BOOST_FUSION_ADAPT_ADT_WRAP_ATTR(A,B,C,D) \ + BOOST_FUSION_ADAPT_ADT_FILLER_1 + +# define BOOST_FUSION_ADAPT_ADT_FILLER_1(A, B, C, D) \ + BOOST_FUSION_ADAPT_ADT_WRAP_ATTR(A,B,C,D) \ + BOOST_FUSION_ADAPT_ADT_FILLER_0 + +# define BOOST_FUSION_ADAPT_ADT_FILLER_0_END +# define BOOST_FUSION_ADAPT_ADT_FILLER_1_END + +# define BOOST_FUSION_ADAPT_ADT_WRAP_ATTR(A, B, C, D) \ + BOOST_PP_IF(BOOST_PP_IS_EMPTY(A), \ + ((2, (C,D))), \ + ((4, (A,B,C,D))) \ + ) + +#endif // BOOST_PP_VARIADICS + +#endif |