84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - Core module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#pragma once
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#ifndef NAZARA_CORE_SPARSEPTR_HPP
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#define NAZARA_CORE_SPARSEPTR_HPP
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///FIXME: Is SparsePtr a really good name for this class ?
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#include <Nazara/Prerequisites.hpp>
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#include <cstddef>
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#include <type_traits>
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namespace Nz
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{
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template<typename T>
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class SparsePtr
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{
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public:
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using BytePtr = typename std::conditional<std::is_const<T>::value, const UInt8*, UInt8*>::type;
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using VoidPtr = typename std::conditional<std::is_const<T>::value, const void*, void*>::type;
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SparsePtr();
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SparsePtr(T* ptr);
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SparsePtr(VoidPtr ptr, int stride);
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SparsePtr(VoidPtr ptr, std::size_t stride);
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template<typename U> SparsePtr(const SparsePtr<U>& ptr);
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SparsePtr(const SparsePtr& ptr) = default;
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~SparsePtr() = default;
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VoidPtr GetPtr() const;
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int GetStride() const;
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void Reset();
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void Reset(T* ptr);
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void Reset(VoidPtr ptr, int stride);
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void Reset(const SparsePtr& ptr);
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template<typename U> void Reset(const SparsePtr<U>& ptr);
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void SetPtr(VoidPtr ptr);
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void SetStride(int stride);
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explicit operator bool() const;
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explicit operator T*() const;
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T& operator*() const;
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T* operator->() const;
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T& operator[](std::size_t index) const;
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SparsePtr& operator=(const SparsePtr& ptr) = default;
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SparsePtr operator+(int count) const;
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SparsePtr operator+(unsigned int count) const;
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SparsePtr operator-(int count) const;
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SparsePtr operator-(unsigned int count) const;
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std::ptrdiff_t operator-(const SparsePtr& ptr) const;
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SparsePtr& operator+=(int count);
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SparsePtr& operator-=(int count);
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SparsePtr& operator++();
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SparsePtr operator++(int);
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SparsePtr& operator--();
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SparsePtr operator--(int);
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bool operator==(const SparsePtr& ptr) const;
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bool operator!=(const SparsePtr& ptr) const;
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bool operator<(const SparsePtr& ptr) const;
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bool operator>(const SparsePtr& ptr) const;
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bool operator<=(const SparsePtr& ptr) const;
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bool operator>=(const SparsePtr& ptr) const;
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private:
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BytePtr m_ptr;
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int m_stride;
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};
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}
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#include <Nazara/Core/SparsePtr.inl>
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#endif // NAZARA_CORE_SPARSEPTR_HPP
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