Added SparsePtr class

Which is basically a pointer with a different stride than it's type size


Former-commit-id: a025889d7f9fa70f99e9cd5944682aebbd02317e

include/Nazara/Core/SparsePtr.hpp

@@ -0,0 +1,60 @@
+// Copyright (C) 2014 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Graphics module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_SPARSEPTR_HPP
+#define NAZARA_SPARSEPTR_HPP
+
+///FIXME: Est-ce que SparsePtr est vraiment le meilleur nom pour cette classe ?
+
+#include <Nazara/Prerequesites.hpp>
+
+template<typename T>
+class NzSparsePtr
+{
+	public:
+		NzSparsePtr();
+		NzSparsePtr(void* ptr, unsigned int stride);
+		NzSparsePtr(const NzSparsePtr& ptr) = default;
+		~NzSparsePtr() = default;
+
+		void* Get() const;
+		unsigned int GetStride() const;
+		void Set(void* ptr);
+		void SetStride(unsigned int stride);
+
+		T& operator*();
+		T& operator->();
+		T& operator[](unsigned int index);
+
+		NzSparsePtr operator+(unsigned int count);
+		NzSparsePtr operator-(unsigned int count);
+
+		NzSparsePtr& operator+=(unsigned int count);
+		NzSparsePtr& operator-=(unsigned int count);
+
+		NzSparsePtr& operator++();
+		NzSparsePtr operator++(int);
+
+		NzSparsePtr& operator--();
+		NzSparsePtr operator--(int);
+
+		bool operator==(const NzSparsePtr& ptr) const;
+		bool operator!=(const NzSparsePtr& ptr) const;
+		bool operator<(const NzSparsePtr& ptr) const;
+		bool operator>(const NzSparsePtr& ptr) const;
+		bool operator<=(const NzSparsePtr& ptr) const;
+		bool operator>=(const NzSparsePtr& ptr) const;
+
+		NzSparsePtr& operator=(const NzSparsePtr& ptr) = default;
+
+	private:
+		nzUInt8* m_ptr;
+		unsigned int m_stride;
+};
+
+#include <Nazara/Core/SparsePtr.inl>
+
+#endif // NAZARA_SPARSEPTR_HPP