yuzu/src/common/uuid.h
Lioncash df72480395 common: Make use of [[nodiscard]] where applicable
Now that clang-format makes [[nodiscard]] attributes format sensibly, we
can apply them to several functions within the common library to allow
the compiler to complain about any misuses of the functions.
2020-08-15 17:17:52 -04:00

53 lines
1.5 KiB
C++

// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <string>
#include "common/common_types.h"
namespace Common {
constexpr u128 INVALID_UUID{{0, 0}};
struct UUID {
// UUIDs which are 0 are considered invalid!
u128 uuid = INVALID_UUID;
constexpr UUID() = default;
constexpr explicit UUID(const u128& id) : uuid{id} {}
constexpr explicit UUID(const u64 lo, const u64 hi) : uuid{{lo, hi}} {}
[[nodiscard]] constexpr explicit operator bool() const {
return uuid[0] != INVALID_UUID[0] && uuid[1] != INVALID_UUID[1];
}
[[nodiscard]] constexpr bool operator==(const UUID& rhs) const {
// TODO(DarkLordZach): Replace with uuid == rhs.uuid with C++20
return uuid[0] == rhs.uuid[0] && uuid[1] == rhs.uuid[1];
}
[[nodiscard]] constexpr bool operator!=(const UUID& rhs) const {
return !operator==(rhs);
}
// TODO(ogniK): Properly generate uuids based on RFC-4122
[[nodiscard]] static UUID Generate();
// Set the UUID to {0,0} to be considered an invalid user
constexpr void Invalidate() {
uuid = INVALID_UUID;
}
// TODO(ogniK): Properly generate a Nintendo ID
[[nodiscard]] constexpr u64 GetNintendoID() const {
return uuid[0];
}
[[nodiscard]] std::string Format() const;
[[nodiscard]] std::string FormatSwitch() const;
};
static_assert(sizeof(UUID) == 16, "UUID is an invalid size!");
} // namespace Common