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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Leon Albrecht <leon2002.la@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Assertions.h>
#include <AK/Types.h>
namespace AK {
template<typename T>
class Ptr32 {
public:
constexpr Ptr32() = default;
Ptr32(T* const ptr)
: m_ptr((u32) reinterpret_cast<FlatPtr>(ptr))
{
VERIFY((reinterpret_cast<FlatPtr>(ptr) & 0xFFFFFFFFULL) == static_cast<FlatPtr>(m_ptr));
}
T& operator*() { return *static_cast<T*>(*this); }
T const& operator*() const { return *static_cast<T const*>(*this); }
T* operator->() { return *this; }
T const* operator->() const { return *this; }
operator T*() { return reinterpret_cast<T*>(static_cast<FlatPtr>(m_ptr)); }
operator T const*() const { return reinterpret_cast<T const*>(static_cast<FlatPtr>(m_ptr)); }
T& operator[](size_t index) { return static_cast<T*>(*this)[index]; }
T const& operator[](size_t index) const { return static_cast<T const*>(*this)[index]; }
constexpr explicit operator bool() { return m_ptr; }
template<typename U>
constexpr bool operator==(Ptr32<U> other) { return m_ptr == other.m_ptr; }
constexpr Ptr32<T> operator+(u32 other) const
{
Ptr32<T> ptr {};
ptr.m_ptr = m_ptr + other;
return ptr;
}
constexpr Ptr32<T> operator-(u32 other) const
{
Ptr32<T> ptr {};
ptr.m_ptr = m_ptr - other;
return ptr;
}
private:
u32 m_ptr { 0 };
};
}
#if USING_AK_GLOBALLY
using AK::Ptr32;
#endif
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