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#pragma once
namespace floormat::detail_borrowed_ptr {
struct control_block_;
} // namespace floormat::detail_borrowed_ptr
namespace floormat {
template<typename T> class bptr;
template<typename T> bptr<T> static_pointer_cast(const bptr<T>& p);
template<typename T>
class bptr final // NOLINT(*-special-member-functions)
{
T* ptr; // todo add simple_bptr that doesn't allow casting. should only have the control block element.
detail_borrowed_ptr::control_block_* blk;
constexpr bptr(NoInitT) noexcept;
public:
template<typename... Ts>
requires std::is_constructible_v<T, Ts&&...>
explicit bptr(InPlaceInitT, Ts&&... args) noexcept;
constexpr bptr(std::nullptr_t) noexcept; // NOLINT(*-explicit-conversions)
constexpr bptr() noexcept;
explicit bptr(T* ptr) noexcept;
~bptr() noexcept;
template<typename Y> requires std::is_convertible_v<Y*, T*> bptr(const bptr<Y>&) noexcept;
template<typename Y> requires std::is_convertible_v<Y*, T*> bptr(bptr<Y>&&) noexcept;
template<typename Y> requires std::is_convertible_v<Y*, T*> bptr& operator=(const bptr<Y>&) noexcept;
template<typename Y> requires std::is_convertible_v<Y*, T*> bptr& operator=(bptr<Y>&&) noexcept;
void swap() noexcept;
T* get() noexcept;
const T* get() const noexcept;
T& operator*() const noexcept;
T* operator->() const noexcept;
uint32_t use_count() const noexcept;
explicit operator bool() const noexcept;
friend bptr<T> static_pointer_cast<T>(const bptr<T>& p);
};
template<typename T> constexpr bptr<T>::bptr(NoInitT) noexcept {};
template<typename T> constexpr bptr<T>::bptr(std::nullptr_t) noexcept: ptr{nullptr}, blk{nullptr} {}
template<typename T> constexpr bptr<T>::bptr() noexcept: bptr{nullptr} {}
template<typename T> bptr(T* ptr) -> bptr<T>;
} // namespace floormat
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