Added index iterators

Former-commit-id: de3ed77ba9e3c48aa68020e23ded679066b9878f

include/Nazara/Utility/IndexIterator.hpp

@@ -0,0 +1,79 @@
+// Copyright (C) 2013 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Utility module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_INDEXITERATOR_HPP
+#define NAZARA_INDEXITERATOR_HPP
+
+#include <Nazara/Prerequesites.hpp>
+
+class NzIndexMapper;
+
+class NzIndexIterator
+{
+	friend NzIndexMapper;
+
+	public:
+		class Reference;
+
+		NzIndexIterator();
+		NzIndexIterator(const NzIndexIterator& iterator);
+		~NzIndexIterator() = default;
+
+		Reference operator*() const;
+
+		Reference operator[](unsigned int index) const;
+
+		NzIndexIterator& operator=(const NzIndexIterator& iterator);
+
+		NzIndexIterator operator+(unsigned int indexCount);
+		NzIndexIterator operator-(unsigned int indexCount);
+
+		NzIndexIterator& operator+=(unsigned int indexCount);
+		NzIndexIterator& operator-=(unsigned int indexCount);
+
+		NzIndexIterator& operator++();
+		NzIndexIterator operator++(int);
+
+		NzIndexIterator& operator--();
+		NzIndexIterator operator--(int);
+
+		friend bool operator==(const NzIndexIterator& lhs, const NzIndexIterator& rhs);
+		friend bool operator!=(const NzIndexIterator& lhs, const NzIndexIterator& rhs);
+		friend bool operator<(const NzIndexIterator& lhs, const NzIndexIterator& rhs);
+		friend bool operator<=(const NzIndexIterator& lhs, const NzIndexIterator& rhs);
+		friend bool operator>(const NzIndexIterator& lhs, const NzIndexIterator& rhs);
+		friend bool operator>=(const NzIndexIterator& lhs, const NzIndexIterator& rhs);
+
+	private:
+		NzIndexIterator(NzIndexMapper* mapper, unsigned int index);
+
+		NzIndexMapper* m_mapper;
+		unsigned int m_index;
+};
+
+class NzIndexIterator::Reference
+{
+	friend NzIndexIterator;
+
+	public:
+		Reference(const Reference& reference) = default;
+		~Reference() = default;
+
+		Reference& operator=(nzUInt32 value);
+		Reference& operator=(const Reference& reference);
+
+		operator nzUInt32() const;
+
+	private:
+		Reference(NzIndexMapper* mapper, unsigned int index);
+
+		NzIndexMapper* m_mapper;
+		unsigned int m_index;
+};
+
+#include <Nazara/Utility/IndexIterator.inl>
+
+#endif // NAZARA_INDEXITERATOR_HPP