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// https://govnokod.ru/27340#comment621647
#include <iostream>
#include <cstdlib>
#define SPLICE(a,b) SPLICE_1(a,b)
#define SPLICE_1(a,b) SPLICE_2(a,b)
#define SPLICE_2(a,b) a##b
#define PP_ARG_N( \
_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, \
_11, _12, _13, _14, _15, _16, _17, _18, _19, _20, \
_21, _22, _23, _24, _25, _26, _27, _28, _29, _30, \
_31, _32, _33, _34, _35, _36, _37, _38, _39, _40, \
_41, _42, _43, _44, _45, _46, _47, _48, _49, _50, \
_51, _52, _53, _54, _55, _56, _57, _58, _59, _60, \
_61, _62, _63, N, ...) N
/* Note 63 is removed */
#define PP_RSEQ_N() \
62, 61, 60, \
59, 58, 57, 56, 55, 54, 53, 52, 51, 50, \
49, 48, 47, 46, 45, 44, 43, 42, 41, 40, \
39, 38, 37, 36, 35, 34, 33, 32, 31, 30, \
29, 28, 27, 26, 25, 24, 23, 22, 21, 20, \
19, 18, 17, 16, 15, 14, 13, 12, 11, 10, \
9, 8, 7, 6, 5, 4, 3, 2, 1, 0
#define PP_NARG_(...) PP_ARG_N(__VA_ARGS__)
/* Note dummy first argument _ and ##__VA_ARGS__ instead of __VA_ARGS__ */
// note: using __VA_OPT__ shit instead ##__VA_ARGS__
#define PP_NARG(...) PP_NARG_(_ __VA_OPT__(,) __VA_ARGS__, PP_RSEQ_N())
#define MK_VAR_T(type, name) \
typeof(type) name
#define TYPE_ADD_0()
#define TYPE_ADD_1(VAR) \
MK_VAR_T VAR;
#define TYPE_ADD_2(VAR, ...) \
MK_VAR_T VAR; TYPE_ADD_1(__VA_ARGS__)
#define TYPE_ADD_3(VAR, ...) \
MK_VAR_T VAR; TYPE_ADD_2(__VA_ARGS__)
#define TYPE_ADD_4(VAR, ...) \
MK_VAR_T VAR; TYPE_ADD_3(__VA_ARGS__)
#define TYPE_ADD_5(VAR, ...) \
MK_VAR_T VAR; TYPE_ADD_4(__VA_ARGS__)
#define TYPE_ADD_6(VAR, ...) \
MK_VAR_T VAR; TYPE_ADD_5(__VA_ARGS__)
#define TYPE_ADD_7(VAR, ...) \
MK_VAR_T VAR; TYPE_ADD_6(__VA_ARGS__)
#define TYPE_ADD_8(VAR, ...) \
MK_VAR_T VAR; TYPE_ADD_7(__VA_ARGS__)
#define TYPE_ADD_9(VAR, ...) \
MK_VAR_T VAR; TYPE_ADD_8(__VA_ARGS__)
#define TYPE_ADD_10(VAR, ...) \
MK_VAR_T VAR; TYPE_ADD_9(__VA_ARGS__)
#define TYPE_ADD_11(VAR, ...) \
MK_VAR_T VAR; TYPE_ADD_10(__VA_ARGS__)
#define TYPE_ADD_(N, ...) \
SPLICE(TYPE_ADD_, N)(__VA_ARGS__)
#define TYPE_ADD(...) \
TYPE_ADD_(PP_NARG(__VA_ARGS__), __VA_ARGS__)
#define REM_BRACKET(...) __VA_ARGS__
#define LAMBDA(name, vars, code) \
struct name {TYPE_ADD vars void operator()() const REM_BRACKET code}
int main()
{
LAMBDA
(
some_type_name,
((int, a), (float, b), (double, c)),
({
std::cout << "Hello, world! " << a << " " << b << " " << c << std::endl;
})
);
auto lambda = some_type_name(1, 3.14f, 0.25);
lambda();
}
j123123 11.04.2021 03:59 # +1
MAKAKA 11.04.2021 04:01 # +1
>TYPE_ADD_11
веселый ты парень
j123123 11.04.2021 04:03 # 0
JloJle4Ka 11.04.2021 04:11 # 0
j123123 11.04.2021 04:14 # +1
bormand 14.04.2021 10:53 # 0
BOOST PP я вызываю тебя!
Емнип, у них там какая-то ёбаная магия через рекурсивные инклуды была для этого.
j123123 14.04.2021 08:43 # 0
j123123 14.04.2021 08:46 # 0
j123123 14.04.2021 08:54 # 0