Separated reference counting from Resources

Former-commit-id: 7380818cfee9e249c11fd15da9ff7883a6e76565

include/Nazara/Core/ObjectRef.inl

@@ -0,0 +1,131 @@
+// Copyright (C) 2014 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Core/Initializer.hpp>
+#include <Nazara/Core/Debug.hpp>
+
+template<typename T>
+NzObjectRef<T>::NzObjectRef() :
+m_resource(nullptr)
+{
+}
+
+template<typename T>
+NzObjectRef<T>::NzObjectRef(T* resource) :
+m_resource(resource)
+{
+	if (m_resource)
+		m_resource->AddReference();
+}
+
+template<typename T>
+NzObjectRef<T>::NzObjectRef(const NzObjectRef& ref) :
+m_resource(ref.m_resource)
+{
+	if (m_resource)
+		m_resource->AddReference();
+}
+
+template<typename T>
+NzObjectRef<T>::NzObjectRef(NzObjectRef&& ref) noexcept :
+m_resource(ref.m_resource)
+{
+	ref.m_resource = nullptr; // On vole la référence
+}
+
+template<typename T>
+NzObjectRef<T>::~NzObjectRef()
+{
+	if (m_resource)
+		m_resource->RemoveReference();
+}
+
+template<typename T>
+bool NzObjectRef<T>::IsValid() const
+{
+	return m_resource != nullptr;
+}
+
+template<typename T>
+T* NzObjectRef<T>::Release()
+{
+	T* resource = m_resource;
+	m_resource = nullptr;
+
+	return resource;
+}
+
+template<typename T>
+bool NzObjectRef<T>::Reset(T* resource)
+{
+	bool destroyed = false;
+	if (m_resource != resource)
+	{
+		if (m_resource)
+		{
+			destroyed = m_resource->RemoveReference();
+			m_resource = nullptr;
+		}
+
+		m_resource = resource;
+		if (m_resource)
+			m_resource->AddReference();
+	}
+
+	return destroyed;
+}
+
+template<typename T>
+NzObjectRef<T>& NzObjectRef<T>::Swap(NzObjectRef& ref)
+{
+	std::swap(m_resource, ref.m_resource);
+
+	return *this;
+}
+
+template<typename T>
+NzObjectRef<T>::operator bool() const
+{
+	return IsValid();
+}
+
+template<typename T>
+NzObjectRef<T>::operator T*() const
+{
+	return m_resource;
+}
+
+template<typename T>
+T* NzObjectRef<T>::operator->() const
+{
+	return m_resource;
+}
+
+template<typename T>
+NzObjectRef<T>& NzObjectRef<T>::operator=(T* resource)
+{
+	Reset(resource);
+
+	return *this;
+}
+
+template<typename T>
+NzObjectRef<T>& NzObjectRef<T>::operator=(const NzObjectRef& ref)
+{
+	Reset(ref.m_resource);
+
+	return *this;
+}
+
+template<typename T>
+NzObjectRef<T>& NzObjectRef<T>::operator=(NzObjectRef&& ref) noexcept
+{
+	Reset();
+
+	std::swap(m_resource, ref.m_resource);
+
+	return *this;
+}
+
+#include <Nazara/Core/DebugOff.hpp>