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#pragma once
#include <type_traits>
/* Concepts:
* Container
* RemovalContainer
*/
namespace NFlatHash::NConcepts {
#define DCV(type) std::declval<type>()
#define DCT(object) decltype(object)
template <class T, class = void>
struct Container : std::false_type {};
template <class T>
struct Container<T, std::void_t<
typename T::value_type,
typename T::size_type,
typename T::difference_type,
DCT(DCV(T).Node(DCV(typename T::size_type))),
DCT(DCV(const T).Node(DCV(typename T::size_type))),
DCT(DCV(const T).Size()),
DCT(DCV(const T).Taken()),
DCT(DCV(const T).Empty()),
DCT(DCV(const T).IsEmpty(DCV(typename T::size_type))),
DCT(DCV(const T).IsTaken(DCV(typename T::size_type))),
DCT(DCV(T).Swap(DCV(T&))),
DCT(DCV(const T).Clone(DCV(typename T::size_type)))>>
: std::conjunction<std::is_same<DCT(DCV(T).Node(DCV(typename T::size_type))),
typename T::value_type&>,
std::is_same<DCT(DCV(const T).Node(DCV(typename T::size_type))),
const typename T::value_type&>,
std::is_same<DCT(DCV(const T).Size()), typename T::size_type>,
std::is_same<DCT(DCV(const T).Taken()), typename T::size_type>,
std::is_same<DCT(DCV(const T).Empty()), typename T::size_type>,
std::is_same<DCT(DCV(const T).IsEmpty(DCV(typename T::size_type))), bool>,
std::is_same<DCT(DCV(const T).IsTaken(DCV(typename T::size_type))), bool>,
std::is_same<DCT(DCV(const T).Clone(DCV(typename T::size_type))), T>,
std::is_copy_constructible<T>,
std::is_move_constructible<T>,
std::is_copy_assignable<T>,
std::is_move_assignable<T>> {};
template <class T>
constexpr bool ContainerV = Container<T>::value;
template <class T, class = void>
struct RemovalContainer : std::false_type {};
template <class T>
struct RemovalContainer<T, std::void_t<
DCT(DCV(T).DeleteNode(DCV(typename T::size_type))),
DCT(DCV(const T).IsDeleted(DCV(typename T::size_type)))>>
: std::conjunction<Container<T>,
std::is_same<DCT(DCV(const T).IsDeleted(DCV(typename T::size_type))),
bool>> {};
template <class T>
constexpr bool RemovalContainerV = RemovalContainer<T>::value;
#undef DCV
#undef DCT
} // namespace NFlatHash::NConcepts
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