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