chromium/device/bluetooth/public/cpp/bluetooth_uuid.h

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef DEVICE_BLUETOOTH_PUBLIC_CPP_BLUETOOTH_UUID_H_
#define DEVICE_BLUETOOTH_PUBLIC_CPP_BLUETOOTH_UUID_H_

#include <cstdint>
#include <ostream>
#include <string>
#include <vector>

#include "base/containers/span.h"
#include "build/build_config.h"

#if BUILDFLAG(IS_WIN)
#include <string_view>

#include "base/win/windows_types.h"
#endif  // BUILDFLAG(IS_WIN)

namespace device {

// Opaque wrapper around a Bluetooth UUID. Instances of UUID represent the
// 128-bit universally unique identifiers (UUIDs) of profiles and attributes
// used in Bluetooth based communication, such as a peripheral's services,
// characteristics, and characteristic descriptors. An instance are
// constructed using a string representing 16, 32, or 128 bit UUID formats.
class BluetoothUUID { … };

// Output the 128-bit canonical string representation of `uuid` to `os`.
std::ostream& operator<<(std::ostream& os, BluetoothUUID uuid);

struct BluetoothUUIDHash { … };

}  // namespace device

#endif  // DEVICE_BLUETOOTH_PUBLIC_CPP_BLUETOOTH_UUID_H_