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
|
#ifndef RFL_INTERNAL_HASTOCLASSMETHODV_HPP_
#define RFL_INTERNAL_HASTOCLASSMETHODV_HPP_
#include <type_traits>
namespace rfl {
namespace internal {
template <typename Wrapper>
using to_class_method_t = decltype(std::declval<const Wrapper>().to_class());
template <typename Wrapper, typename = std::void_t<>>
struct has_to_class_m : std::false_type {};
template <typename Wrapper>
struct has_to_class_m<Wrapper, std::void_t<to_class_method_t<Wrapper>>>
: std::true_type {};
/// Utility parameter for named tuple parsing, can be used by the
/// parsers to determine whether a class or struct has a method
/// called "to_class".
template <typename Wrapper>
constexpr bool has_to_class_method_v = has_to_class_m<Wrapper>::value;
} // namespace internal
} // namespace rfl
#endif
|
