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
64
65
66
67
68
69
70
71
|
#ifndef TYPEASVALUE_SRC_FUNCTION_APPLY_H_
#define TYPEASVALUE_SRC_FUNCTION_APPLY_H_
#include <type_traits>
#include "list/list.h"
#include "list/operation/nth.h"
namespace tav {
namespace detail {
struct placeholder_tag { };
template <typename Type>
using is_placeholder = tav::Boolean<
std::is_base_of<placeholder_tag, Type>::value
>;
template <int Index>
struct placeholder : placeholder_tag { };
template <
typename Partials,
typename Argument
>
struct resolve_placeholder {
typedef Argument type;
};
template <
typename Partials,
int Index
>
struct resolve_placeholder<Partials, placeholder<Index>> {
typedef typename Nth<Size<Index>, Partials>::type type;
};
}
typedef detail::placeholder<0> _0;
typedef detail::placeholder<1> _1;
typedef detail::placeholder<2> _2;
typedef detail::placeholder<3> _3;
template <
template<typename...> class Function,
typename... Arguments
>
struct Apply {
template <typename... Partials>
using variadic_type = Function<
typename detail::resolve_placeholder<
typename tav::List<Partials...>::type,
Arguments
>::type...
>;
template <typename Partial>
using single_type = variadic_type<Partial>;
template <typename Partial0, typename Partial1>
using pair_type = variadic_type<Partial0, Partial1>;
template <typename Partial0, typename Partial1, typename Partial2>
using triple_type = variadic_type<Partial0, Partial1, Partial2>;
};
}
#endif // TYPEASVALUE_SRC_FUNCTION_APPLY_H_
|
