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#pragma once
#include "concepts/value_marker.h"
#include <type_traits>
#include <tuple>
namespace NFlatHash {
namespace NSet {
template <auto Value>
struct TStaticValueMarker {
using value_type = decltype(Value);
constexpr auto Create() const noexcept {
return Value;
}
template <class U>
bool Equals(const U& rhs) const {
return Value == rhs;
}
};
static_assert(NConcepts::ValueMarkerV<TStaticValueMarker<5>>);
template <class T>
class TEqValueMarker {
public:
using value_type = T;
template <class V, class = std::enable_if_t<std::is_constructible_v<T, std::decay_t<V>>>>
TEqValueMarker(V&& v) : Value_(std::forward<V>(v)) {}
TEqValueMarker(const TEqValueMarker&) = default;
TEqValueMarker(TEqValueMarker&&) = default;
TEqValueMarker& operator=(const TEqValueMarker&) = default;
TEqValueMarker& operator=(TEqValueMarker&&) = default;
const T& Create() const noexcept {
return Value_;
}
template <class U>
bool Equals(const U& rhs) const {
return Value_ == rhs;
}
private:
T Value_;
};
static_assert(NConcepts::ValueMarkerV<TEqValueMarker<int>>);
} // namespace NSet
namespace NMap {
template <auto Key, class T>
class TStaticValueMarker {
static_assert(std::is_default_constructible_v<T>);
public:
using value_type = std::pair<decltype(Key), T>;
TStaticValueMarker() = default;
TStaticValueMarker(const TStaticValueMarker&) {}
TStaticValueMarker(TStaticValueMarker&&) {}
TStaticValueMarker& operator=(const TStaticValueMarker&) noexcept { return *this; }
TStaticValueMarker& operator=(TStaticValueMarker&&) noexcept { return *this; }
std::pair<decltype(Key), const T&> Create() const noexcept { return { Key, Value_ }; }
template <class U>
bool Equals(const U& rhs) const {
return Key == rhs.first;
}
private:
T Value_;
};
static_assert(NConcepts::ValueMarkerV<TStaticValueMarker<5, int>>);
template <class Key, class T>
class TEqValueMarker {
static_assert(std::is_default_constructible_v<T>);
public:
using value_type = std::pair<Key, T>;
template <class V, class = std::enable_if_t<std::is_constructible_v<Key, std::decay_t<V>>>>
TEqValueMarker(V&& v) : Key_(std::forward<V>(v)) {}
TEqValueMarker(const TEqValueMarker& vm)
: Key_(vm.Key_) {}
TEqValueMarker(TEqValueMarker&& vm) noexcept(std::is_nothrow_move_constructible_v<Key>
&& std::is_nothrow_constructible_v<T>)
: Key_(std::move(vm.Key_)) {}
TEqValueMarker& operator=(const TEqValueMarker& vm) {
Key_ = vm.Key_;
return *this;
}
TEqValueMarker& operator=(TEqValueMarker&& vm) noexcept(std::is_nothrow_move_assignable_v<Key>) {
Key_ = std::move(vm.Key_);
return *this;
}
auto Create() const noexcept { return std::tie(Key_, Value_); }
template <class U>
bool Equals(const U& rhs) const {
return Key_ == rhs.first;
}
private:
Key Key_;
T Value_;
};
static_assert(NConcepts::ValueMarkerV<TEqValueMarker<int, int>>);
} // namespace NMap
} // namespace NFlatHash
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