RuntimeTextureDescriptorLease.h

#pragma once
 
#include <cstdint>
#include <limits>
 
namespace Engine::Core
{
    class AssetManager;
}
 
namespace Engine::Assets
{
    class RuntimeTextureDescriptorLease
    {
    public:
        RuntimeTextureDescriptorLease() = default;
        ~RuntimeTextureDescriptorLease();
 
        RuntimeTextureDescriptorLease( const RuntimeTextureDescriptorLease & ) = delete;
        RuntimeTextureDescriptorLease & operator=( const RuntimeTextureDescriptorLease & ) = delete;
 
        RuntimeTextureDescriptorLease( RuntimeTextureDescriptorLease && other ) noexcept;
        RuntimeTextureDescriptorLease & operator=( RuntimeTextureDescriptorLease && other ) noexcept;
 
        [[nodiscard]] uint32_t index() const { return descriptorIndex_; }
        [[nodiscard]] bool isValid() const { return owner_ != nullptr; }
        explicit operator bool() const { return isValid(); }
 
        void reset();
 
    private:
        friend class Core::AssetManager;
 
        RuntimeTextureDescriptorLease( Core::AssetManager * owner, uint32_t descriptorIndex )
          : owner_( owner ), descriptorIndex_( descriptorIndex )
        {
        }
 
        Core::AssetManager * owner_ = nullptr;
        uint32_t descriptorIndex_ = std::numeric_limits<uint32_t>::max();
    };
}  // namespace Engine::Assets