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#pragma once
#include "borrowed-ptr-fwd.hpp"
namespace floormat::detail_borrowed_ptr {
struct control_block;
template<typename From, typename To>
concept DerivedFrom = requires(From* x) {
requires !std::is_same_v<From, To>;
requires std::is_nothrow_convertible_v<From*, To*>;
};
} // namespace floormat::detail_borrowed_ptr
namespace floormat {
template<typename T> class bptr;
template<typename T>
class bptr final // NOLINT(*-special-member-functions)
{
mutable T* casted_ptr;
detail_borrowed_ptr::control_block* blk;
explicit bptr(DirectInitT, T* casted_ptr, detail_borrowed_ptr::control_block* blk) noexcept;
struct private_tag_t final {};
static constexpr private_tag_t private_tag{};
template<typename Y> bptr(const bptr<Y>& other, private_tag_t) noexcept;
template<typename Y> bptr& _copy_assign(const bptr<Y>& other) noexcept;
template<typename Y> bptr(bptr<Y>&& other, private_tag_t) noexcept;
template<typename Y> bptr& _move_assign(bptr<Y>&& other) noexcept;
public:
template<typename... Ts>
requires std::is_constructible_v<T, Ts&&...>
explicit bptr(InPlaceInitT, Ts&&... args) noexcept;
explicit bptr(T* ptr) noexcept;
bptr() noexcept;
~bptr() noexcept;
bptr(std::nullptr_t) noexcept; // NOLINT(*-explicit-conversions)
bptr& operator=(std::nullptr_t) noexcept;
bptr(const bptr&) noexcept;
bptr& operator=(const bptr&) noexcept;
template<detail_borrowed_ptr::DerivedFrom<T> Y> bptr(const bptr<Y>&) noexcept;
template<detail_borrowed_ptr::DerivedFrom<T> Y> bptr& operator=(const bptr<Y>&) noexcept;
bptr(bptr&&) noexcept;
bptr& operator=(bptr&&) noexcept;
template<detail_borrowed_ptr::DerivedFrom<T> Y> bptr(bptr<Y>&&) noexcept;
template<detail_borrowed_ptr::DerivedFrom<T> Y> bptr& operator=(bptr<Y>&&) noexcept;
void reset() noexcept;
template<bool MaybeEmpty = true> void destroy() noexcept;
void swap(bptr& other) noexcept;
uint32_t use_count() const noexcept;
T* get() const noexcept;
T* operator->() const noexcept;
T& operator*() const noexcept;
explicit operator bool() const noexcept;
friend bool operator==<T>(const bptr<T>& a, const bptr<T>& b) noexcept;
template<typename U> friend class bptr;
template<typename U, typename Tʹ> friend bptr<U> static_pointer_cast(const bptr<Tʹ>& p) noexcept;
};
} // namespace floormat
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