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https://github.com/SerenityOS/serenity
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ae3ffdd521
This patch adds the `USING_AK_GLOBALLY` macro which is enabled by default, but can be overridden by build flags. This is a step towards integrating Jakt and AK types.
62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Leon Albrecht <leon2002.la@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Assertions.h>
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#include <AK/Types.h>
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namespace AK {
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template<typename T>
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class Ptr32 {
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public:
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constexpr Ptr32() = default;
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Ptr32(T* const ptr)
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: m_ptr((u32) reinterpret_cast<FlatPtr>(ptr))
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{
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VERIFY((reinterpret_cast<FlatPtr>(ptr) & 0xFFFFFFFFULL) == static_cast<FlatPtr>(m_ptr));
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}
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T& operator*() { return *static_cast<T*>(*this); }
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T const& operator*() const { return *static_cast<T const*>(*this); }
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T* operator->() { return *this; }
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T const* operator->() const { return *this; }
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operator T*() { return reinterpret_cast<T*>(static_cast<FlatPtr>(m_ptr)); }
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operator T const*() const { return reinterpret_cast<T const*>(static_cast<FlatPtr>(m_ptr)); }
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T& operator[](size_t index) { return static_cast<T*>(*this)[index]; }
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T const& operator[](size_t index) const { return static_cast<T const*>(*this)[index]; }
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constexpr explicit operator bool() { return m_ptr; }
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template<typename U>
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constexpr bool operator==(Ptr32<U> other) { return m_ptr == other.m_ptr; }
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constexpr Ptr32<T> operator+(u32 other) const
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{
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Ptr32<T> ptr {};
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ptr.m_ptr = m_ptr + other;
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return ptr;
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}
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constexpr Ptr32<T> operator-(u32 other) const
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{
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Ptr32<T> ptr {};
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ptr.m_ptr = m_ptr - other;
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return ptr;
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}
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private:
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u32 m_ptr { 0 };
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};
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}
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#if USING_AK_GLOBALLY
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using AK::Ptr32;
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#endif
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