MacroLibX/runtime/Includes/Utils/NonOwningPtr.h

#ifndef __MLX_NON_OWNING_PTR__
#define __MLX_NON_OWNING_PTR__

namespace mlx
{
	template<typename T>
	class NonOwningPtr
	{
		public:
			NonOwningPtr(T* ptr = nullptr);
			NonOwningPtr(const NonOwningPtr&) = default;
			NonOwningPtr(NonOwningPtr&& ptr) noexcept;

			NonOwningPtr& operator=(T* ptr);
			NonOwningPtr& operator=(const NonOwningPtr&) = default;
			NonOwningPtr& operator=(NonOwningPtr&& ptr) noexcept;

			inline operator bool() const noexcept;

			inline T* Get() const noexcept;
			inline T* operator->() const noexcept;
			inline T& operator*() const noexcept;

			~NonOwningPtr() = default;

		private:
			T* p_ptr = nullptr;
	};
}

#include <Utils/NonOwningPtr.inl>

namespace std
{
	template <typename T>
	struct hash<mlx::NonOwningPtr<T>>
	{
		std::size_t operator()(const mlx::NonOwningPtr<T>& ptr) const noexcept
		{
			return std::hash<T*>{}(ptr.Get());
		}
	};
}

#endif