Method update

src/SFML/Window/macOS/JoystickImpl.cpp:394–543

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JoystickState JoystickImpl::update()
{
    const AutoreleasePool          pool;
    static constexpr JoystickState disconnectedState; // return this if joystick was disconnected
    JoystickState                  state;             // otherwise return that
    state.connected = true;

    // Note: free up is done in close() which is called, if required,
    //       by the joystick manager. So we don't release buttons nor axes here.

    // First, let's determine if the joystick is still connected
    const Location selfLoc = m_locationIDs[m_index];

    // Get all devices
    CFSetRef devices = HIDJoystickManager::getInstance().copyJoysticks();
    if (devices == nullptr)
        return disconnectedState;

    // Get a usable copy of the joysticks devices.
    const CFIndex          joysticksCount = CFSetGetCount(devices);
    std::vector<CFTypeRef> devicesArray(static_cast<std::size_t>(joysticksCount));
    CFSetGetValues(devices, devicesArray.data());

    // Search for it
    bool found = false;
    for (CFIndex i(0); !found && i < joysticksCount; ++i)
    {
        auto* d = static_cast<IOHIDDeviceRef>(const_cast<void*>(devicesArray[static_cast<std::size_t>(i)]));
        if (selfLoc == HIDInputManager::getLocationID(d))
            found = true;
    }

    // Release unused stuff
    CFRelease(devices);

    // If not found we consider it disconnected
    if (!found)
        return disconnectedState;

    // Update buttons' state
    unsigned int i = 0;
    for (auto it = m_buttons.begin(); it != m_buttons.end(); ++it, ++i)
    {
        IOHIDValueRef value = nil;
        IOHIDDeviceGetValue(IOHIDElementGetDevice(*it), *it, &value);

        // Check for plug out.
        if (!value)
        {
            return disconnectedState;
        }

        // 1 means pressed, others mean released
        state.buttons[i] = IOHIDValueGetIntegerValue(value) == 1;
    }

    // Update axes' state
    for (const auto& [axis, iohidElementRef] : m_axis)