diff --git a/include/boost/fusion/adapted/struct/adapt_struct.hpp b/include/boost/fusion/adapted/struct/adapt_struct.hpp index e96e7c76..2744f5b2 100644 --- a/include/boost/fusion/adapted/struct/adapt_struct.hpp +++ b/include/boost/fusion/adapted/struct/adapt_struct.hpp @@ -17,6 +17,8 @@ #include #include #include +#include +#include #include #include #include @@ -61,25 +63,28 @@ (1)NAME_SEQ, \ struct_tag, \ 0, \ - BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER(__VA_ARGS__), \ + BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER( \ + BOOST_PP_VARIADIC_TO_SEQ(__VA_ARGS__)), \ BOOST_FUSION_ADAPT_STRUCT_C) -# define BOOST_FUSION_ADAPT_STRUCT(NAME, ...) \ +# define BOOST_FUSION_ADAPT_STRUCT(...) \ BOOST_FUSION_ADAPT_STRUCT_BASE( \ (0), \ - (0)(NAME), \ + (0)(BOOST_PP_SEQ_HEAD(BOOST_PP_VARIADIC_TO_SEQ(__VA_ARGS__))), \ struct_tag, \ 0, \ - BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER(__VA_ARGS__), \ + BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER( \ + BOOST_PP_SEQ_TAIL(BOOST_PP_VARIADIC_TO_SEQ(__VA_ARGS__))), \ BOOST_FUSION_ADAPT_STRUCT_C) -# define BOOST_FUSION_ADAPT_STRUCT_AS_VIEW(NAME, ...) \ +# define BOOST_FUSION_ADAPT_STRUCT_AS_VIEW(...) \ BOOST_FUSION_ADAPT_STRUCT_BASE( \ (0), \ - (0)(NAME), \ + (0)(BOOST_PP_SEQ_HEAD(BOOST_PP_VARIADIC_TO_SEQ(__VA_ARGS__))), \ struct_tag, \ 1, \ - BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER(__VA_ARGS__), \ + BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER( \ + BOOST_PP_SEQ_TAIL(BOOST_PP_VARIADIC_TO_SEQ(__VA_ARGS__))), \ BOOST_FUSION_ADAPT_STRUCT_C) #else // BOOST_PP_VARIADICS diff --git a/include/boost/fusion/adapted/struct/detail/adapt_base_attr_filler.hpp b/include/boost/fusion/adapted/struct/detail/adapt_base_attr_filler.hpp index 69d5b204..7a83bb34 100644 --- a/include/boost/fusion/adapted/struct/detail/adapt_base_attr_filler.hpp +++ b/include/boost/fusion/adapted/struct/detail/adapt_base_attr_filler.hpp @@ -49,14 +49,16 @@ # define BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER_OP(r, unused, elem) \ BOOST_PP_IF(BOOST_FUSION_PP_IS_SEQ(elem), \ BOOST_PP_CAT( BOOST_FUSION_ADAPT_STRUCT_FILLER_0 elem ,_END), \ - BOOST_FUSION_ADAPT_STRUCT_WRAP_ATTR(BOOST_FUSION_ADAPT_AUTO, \ - elem)) + BOOST_PP_IF(BOOST_PP_IS_EMPTY(elem), \ + BOOST_PP_EMPTY(), \ + BOOST_FUSION_ADAPT_STRUCT_WRAP_ATTR(BOOST_FUSION_ADAPT_AUTO,elem))\ + ) -# define BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER(...) \ +# define BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER(VA_ARGS_SEQ) \ BOOST_PP_SEQ_PUSH_FRONT( \ BOOST_PP_SEQ_FOR_EACH( \ BOOST_FUSION_ADAPT_STRUCT_ATTRIBUTES_FILLER_OP, \ - unused, BOOST_PP_VARIADIC_TO_SEQ(__VA_ARGS__)), \ + unused, VA_ARGS_SEQ), \ (0,0)) #endif // BOOST_PP_VARIADICS diff --git a/test/sequence/adapt_struct.cpp b/test/sequence/adapt_struct.cpp index 121827f5..37b76923 100644 --- a/test/sequence/adapt_struct.cpp +++ b/test/sequence/adapt_struct.cpp @@ -149,6 +149,9 @@ namespace ns #endif +struct empty_struct {}; +BOOST_FUSION_ADAPT_STRUCT(empty_struct,); + int main() {