serenity/AK/UUID.h
Daniel Bertalan 4296425bd8 Everywhere: Remove redundant inequality comparison operators
C++20 can automatically synthesize `operator!=` from `operator==`, so
there is no point in writing such functions by hand if all they do is
call through to `operator==`.

This fixes a compile error with compilers that implement P2468 (Clang
16 currently). This paper restores the C++17 behavior that if both
`T::operator==(U)` and `T::operator!=(U)` exist, `U == T` won't be
rewritten in reverse to call `T::operator==(U)`. Removing `!=` operators
makes the rewriting possible again.
See https://reviews.llvm.org/D134529#3853062
2022-11-06 10:25:08 -07:00

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/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Array.h>
#include <AK/ByteBuffer.h>
#include <AK/StringView.h>
#include <AK/Types.h>
#ifdef KERNEL
# include <Kernel/KString.h>
#else
# include <AK/String.h>
#endif
namespace AK {
class UUID {
public:
enum class Endianness {
Mixed,
Little
};
UUID() = default;
UUID(Array<u8, 16> uuid_buffer);
UUID(StringView, Endianness endianness = Endianness::Little);
~UUID() = default;
bool operator==(const UUID&) const = default;
#ifdef KERNEL
ErrorOr<NonnullOwnPtr<Kernel::KString>> to_string() const;
#else
String to_string() const;
#endif
bool is_zero() const;
private:
void convert_string_view_to_little_endian_uuid(StringView);
void convert_string_view_to_mixed_endian_uuid(StringView);
Array<u8, 16> m_uuid_buffer {};
};
}
using AK::UUID;