:
#define GLK_PP_DETAIL_SEQ_DOUBLE_PARENS_0(...) \
((__VA_ARGS__)) GLK_PP_DETAIL_SEQ_DOUBLE_PARENS_1
#define GLK_PP_DETAIL_SEQ_DOUBLE_PARENS_1(...) \
((__VA_ARGS__)) GLK_PP_DETAIL_SEQ_DOUBLE_PARENS_0
#define GLK_PP_DETAIL_SEQ_DOUBLE_PARENS_0_END
#define GLK_PP_DETAIL_SEQ_DOUBLE_PARENS_1_END
// Double the parentheses of a Boost.PP sequence
// I.e. (a, b)(c, d) becomes ((a, b))((c, d))
#define GLK_PP_SEQ_DOUBLE_PARENS(seq) \
BOOST_PP_CAT(GLK_PP_DETAIL_SEQ_DOUBLE_PARENS_0 seq, _END)
#define MAKE_ONE_VARIABLE(r, data, elem) \
BOOST_PP_TUPLE_ELEM(1, elem) BOOST_PP_TUPLE_ELEM(0, elem) = BOOST_PP_TUPLE_ELEM(2, elem);
#define MAKE_VARIABLES(seq) \
BOOST_PP_SEQ_FOR_EACH(MAKE_ONE_VARIABLE, ~, GLK_PP_SEQ_DOUBLE_PARENS(seq))
사용법 :
#define TYPES (height,int,10)(width,int,20)
int main() {
MAKE_VARIABLES(TYPES)
}
가로 전처리 :
int main() {
int height = 10; int width = 20;
}
See it live on Coliru
부스트를하지 않아도 GLK_PP_SEQ_DOUBLE_PARENS와 (과) 비슷한 항목이 있습니까? – James
@Phantom 내가 아는 것은 아니지만, 불행히도. – Quentin