fidl_fuchsia_hardware_usb_policy/

fidl_fuchsia_hardware_usb_policy.rs

// WARNING: This file is machine generated by fidlgen.

#![warn(clippy::all)]
#![allow(unused_parens, unused_mut, unused_imports, nonstandard_style)]

use bitflags::bitflags;
use fidl::client::QueryResponseFut;
use fidl::encoding::{MessageBufFor, ProxyChannelBox, ResourceDialect};
use fidl::endpoints::{ControlHandle as _, Responder as _};
pub use fidl_fuchsia_hardware_usb_policy__common::*;
use futures::future::{self, MaybeDone, TryFutureExt};
use zx_status;

#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct ControllerMarker;

impl fidl::endpoints::ProtocolMarker for ControllerMarker {
    type Proxy = ControllerProxy;
    type RequestStream = ControllerRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = ControllerSynchronousProxy;

    const DEBUG_NAME: &'static str = "(anonymous) Controller";
}

pub trait ControllerProxyInterface: Send + Sync {
    type WatchDeviceStateResponseFut: std::future::Future<Output = Result<DeviceStateWatcherWatchDeviceStateResult, fidl::Error>>
        + Send;
    fn r#watch_device_state(&self) -> Self::WatchDeviceStateResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct ControllerSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for ControllerSynchronousProxy {
    type Proxy = ControllerProxy;
    type Protocol = ControllerMarker;

    fn from_channel(inner: fidl::Channel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    fn as_channel(&self) -> &fidl::Channel {
        self.client.as_channel()
    }
}

#[cfg(target_os = "fuchsia")]
impl ControllerSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        Self { client: fidl::client::sync::Client::new(channel) }
    }

    pub fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    /// Waits until an event arrives and returns it. It is safe for other
    /// threads to make concurrent requests while waiting for an event.
    pub fn wait_for_event(
        &self,
        deadline: zx::MonotonicInstant,
    ) -> Result<ControllerEvent, fidl::Error> {
        ControllerEvent::decode(self.client.wait_for_event::<ControllerMarker>(deadline)?)
    }

    /// Notify a client of an updated device state value via a hanging get.
    /// The first time this is called, it will return right away with the
    /// current state. Subsequent calls will hang until there is a change
    /// to report.
    /// Returns a table containing the updated device state.
    pub fn r#watch_device_state(
        &self,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<DeviceStateWatcherWatchDeviceStateResult, fidl::Error> {
        let _response = self.client.send_query::<
            fidl::encoding::EmptyPayload,
            fidl::encoding::FlexibleResultType<DeviceStateUpdate, i32>,
            ControllerMarker,
        >(
            (),
            0x44628a2275753738,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            ___deadline,
        )?
        .into_result::<ControllerMarker>("watch_device_state")?;
        Ok(_response.map(|x| x))
    }
}

#[cfg(target_os = "fuchsia")]
impl From<ControllerSynchronousProxy> for zx::NullableHandle {
    fn from(value: ControllerSynchronousProxy) -> Self {
        value.into_channel().into()
    }
}

#[cfg(target_os = "fuchsia")]
impl From<fidl::Channel> for ControllerSynchronousProxy {
    fn from(value: fidl::Channel) -> Self {
        Self::new(value)
    }
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::FromClient for ControllerSynchronousProxy {
    type Protocol = ControllerMarker;

    fn from_client(value: fidl::endpoints::ClientEnd<ControllerMarker>) -> Self {
        Self::new(value.into_channel())
    }
}

#[derive(Debug, Clone)]
pub struct ControllerProxy {
    client: fidl::client::Client<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl fidl::endpoints::Proxy for ControllerProxy {
    type Protocol = ControllerMarker;

    fn from_channel(inner: ::fidl::AsyncChannel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> Result<::fidl::AsyncChannel, Self> {
        self.client.into_channel().map_err(|client| Self { client })
    }

    fn as_channel(&self) -> &::fidl::AsyncChannel {
        self.client.as_channel()
    }
}

impl ControllerProxy {
    /// Create a new Proxy for fuchsia.hardware.usb.policy/Controller.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <ControllerMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::Client::new(channel, protocol_name) }
    }

    /// Get a Stream of events from the remote end of the protocol.
    ///
    /// # Panics
    ///
    /// Panics if the event stream was already taken.
    pub fn take_event_stream(&self) -> ControllerEventStream {
        ControllerEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Notify a client of an updated device state value via a hanging get.
    /// The first time this is called, it will return right away with the
    /// current state. Subsequent calls will hang until there is a change
    /// to report.
    /// Returns a table containing the updated device state.
    pub fn r#watch_device_state(
        &self,
    ) -> fidl::client::QueryResponseFut<
        DeviceStateWatcherWatchDeviceStateResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        ControllerProxyInterface::r#watch_device_state(self)
    }
}

impl ControllerProxyInterface for ControllerProxy {
    type WatchDeviceStateResponseFut = fidl::client::QueryResponseFut<
        DeviceStateWatcherWatchDeviceStateResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#watch_device_state(&self) -> Self::WatchDeviceStateResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<DeviceStateWatcherWatchDeviceStateResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::FlexibleResultType<DeviceStateUpdate, i32>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x44628a2275753738,
            >(_buf?)?
            .into_result::<ControllerMarker>("watch_device_state")?;
            Ok(_response.map(|x| x))
        }
        self.client.send_query_and_decode::<
            fidl::encoding::EmptyPayload,
            DeviceStateWatcherWatchDeviceStateResult,
        >(
            (),
            0x44628a2275753738,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            _decode,
        )
    }
}

pub struct ControllerEventStream {
    event_receiver: fidl::client::EventReceiver<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl std::marker::Unpin for ControllerEventStream {}

impl futures::stream::FusedStream for ControllerEventStream {
    fn is_terminated(&self) -> bool {
        self.event_receiver.is_terminated()
    }
}

impl futures::Stream for ControllerEventStream {
    type Item = Result<ControllerEvent, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        match futures::ready!(futures::stream::StreamExt::poll_next_unpin(
            &mut self.event_receiver,
            cx
        )?) {
            Some(buf) => std::task::Poll::Ready(Some(ControllerEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

#[derive(Debug)]
pub enum ControllerEvent {
    #[non_exhaustive]
    _UnknownEvent {
        /// Ordinal of the event that was sent.
        ordinal: u64,
    },
}

impl ControllerEvent {
    /// Decodes a message buffer as a [`ControllerEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<ControllerEvent, fidl::Error> {
        let (bytes, _handles) = buf.split_mut();
        let (tx_header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;
        debug_assert_eq!(tx_header.tx_id, 0);
        match tx_header.ordinal {
            _ if tx_header.dynamic_flags().contains(fidl::encoding::DynamicFlags::FLEXIBLE) => {
                Ok(ControllerEvent::_UnknownEvent { ordinal: tx_header.ordinal })
            }
            _ => Err(fidl::Error::UnknownOrdinal {
                ordinal: tx_header.ordinal,
                protocol_name: <ControllerMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

/// A Stream of incoming requests for fuchsia.hardware.usb.policy/Controller.
pub struct ControllerRequestStream {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
    is_terminated: bool,
}

impl std::marker::Unpin for ControllerRequestStream {}

impl futures::stream::FusedStream for ControllerRequestStream {
    fn is_terminated(&self) -> bool {
        self.is_terminated
    }
}

impl fidl::endpoints::RequestStream for ControllerRequestStream {
    type Protocol = ControllerMarker;
    type ControlHandle = ControllerControlHandle;

    fn from_channel(channel: ::fidl::AsyncChannel) -> Self {
        Self { inner: std::sync::Arc::new(fidl::ServeInner::new(channel)), is_terminated: false }
    }

    fn control_handle(&self) -> Self::ControlHandle {
        ControllerControlHandle { inner: self.inner.clone() }
    }

    fn into_inner(
        self,
    ) -> (::std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>, bool)
    {
        (self.inner, self.is_terminated)
    }

    fn from_inner(
        inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
        is_terminated: bool,
    ) -> Self {
        Self { inner, is_terminated }
    }
}

impl futures::Stream for ControllerRequestStream {
    type Item = Result<ControllerRequest, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        let this = &mut *self;
        if this.inner.check_shutdown(cx) {
            this.is_terminated = true;
            return std::task::Poll::Ready(None);
        }
        if this.is_terminated {
            panic!("polled ControllerRequestStream after completion");
        }
        fidl::encoding::with_tls_decode_buf::<_, fidl::encoding::DefaultFuchsiaResourceDialect>(
            |bytes, handles| {
                match this.inner.channel().read_etc(cx, bytes, handles) {
                    std::task::Poll::Ready(Ok(())) => {}
                    std::task::Poll::Pending => return std::task::Poll::Pending,
                    std::task::Poll::Ready(Err(zx_status::Status::PEER_CLOSED)) => {
                        this.is_terminated = true;
                        return std::task::Poll::Ready(None);
                    }
                    std::task::Poll::Ready(Err(e)) => {
                        return std::task::Poll::Ready(Some(Err(fidl::Error::ServerRequestRead(
                            e.into(),
                        ))));
                    }
                }

                // A message has been received from the channel
                let (header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;

                std::task::Poll::Ready(Some(match header.ordinal {
                    0x44628a2275753738 => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            fidl::encoding::EmptyPayload,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<fidl::encoding::EmptyPayload>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = ControllerControlHandle { inner: this.inner.clone() };
                        Ok(ControllerRequest::WatchDeviceState {
                            responder: ControllerWatchDeviceStateResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    _ if header.tx_id == 0
                        && header
                            .dynamic_flags()
                            .contains(fidl::encoding::DynamicFlags::FLEXIBLE) =>
                    {
                        Ok(ControllerRequest::_UnknownMethod {
                            ordinal: header.ordinal,
                            control_handle: ControllerControlHandle { inner: this.inner.clone() },
                            method_type: fidl::MethodType::OneWay,
                        })
                    }
                    _ if header
                        .dynamic_flags()
                        .contains(fidl::encoding::DynamicFlags::FLEXIBLE) =>
                    {
                        this.inner.send_framework_err(
                            fidl::encoding::FrameworkErr::UnknownMethod,
                            header.tx_id,
                            header.ordinal,
                            header.dynamic_flags(),
                            (bytes, handles),
                        )?;
                        Ok(ControllerRequest::_UnknownMethod {
                            ordinal: header.ordinal,
                            control_handle: ControllerControlHandle { inner: this.inner.clone() },
                            method_type: fidl::MethodType::TwoWay,
                        })
                    }
                    _ => Err(fidl::Error::UnknownOrdinal {
                        ordinal: header.ordinal,
                        protocol_name:
                            <ControllerMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                    }),
                }))
            },
        )
    }
}

/// Protocol for communicating with a low-level USB hardware controller.
///
/// This interface allows the USB policy component to act as a client and monitor
/// the hardware's state.
#[derive(Debug)]
pub enum ControllerRequest {
    /// Notify a client of an updated device state value via a hanging get.
    /// The first time this is called, it will return right away with the
    /// current state. Subsequent calls will hang until there is a change
    /// to report.
    /// Returns a table containing the updated device state.
    WatchDeviceState { responder: ControllerWatchDeviceStateResponder },
    /// An interaction was received which does not match any known method.
    #[non_exhaustive]
    _UnknownMethod {
        /// Ordinal of the method that was called.
        ordinal: u64,
        control_handle: ControllerControlHandle,
        method_type: fidl::MethodType,
    },
}

impl ControllerRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_watch_device_state(self) -> Option<(ControllerWatchDeviceStateResponder)> {
        if let ControllerRequest::WatchDeviceState { responder } = self {
            Some((responder))
        } else {
            None
        }
    }

    /// Name of the method defined in FIDL
    pub fn method_name(&self) -> &'static str {
        match *self {
            ControllerRequest::WatchDeviceState { .. } => "watch_device_state",
            ControllerRequest::_UnknownMethod { method_type: fidl::MethodType::OneWay, .. } => {
                "unknown one-way method"
            }
            ControllerRequest::_UnknownMethod { method_type: fidl::MethodType::TwoWay, .. } => {
                "unknown two-way method"
            }
        }
    }
}

#[derive(Debug, Clone)]
pub struct ControllerControlHandle {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
}

impl fidl::endpoints::ControlHandle for ControllerControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }

    fn shutdown_with_epitaph(&self, status: zx_status::Status) {
        self.inner.shutdown_with_epitaph(status)
    }

    fn is_closed(&self) -> bool {
        self.inner.channel().is_closed()
    }
    fn on_closed(&self) -> fidl::OnSignalsRef<'_> {
        self.inner.channel().on_closed()
    }

    #[cfg(target_os = "fuchsia")]
    fn signal_peer(
        &self,
        clear_mask: zx::Signals,
        set_mask: zx::Signals,
    ) -> Result<(), zx_status::Status> {
        use fidl::Peered;
        self.inner.channel().signal_peer(clear_mask, set_mask)
    }
}

impl ControllerControlHandle {}

#[must_use = "FIDL methods require a response to be sent"]
#[derive(Debug)]
pub struct ControllerWatchDeviceStateResponder {
    control_handle: std::mem::ManuallyDrop<ControllerControlHandle>,
    tx_id: u32,
}

/// Set the the channel to be shutdown (see [`ControllerControlHandle::shutdown`])
/// if the responder is dropped without sending a response, so that the client
/// doesn't hang. To prevent this behavior, call `drop_without_shutdown`.
impl std::ops::Drop for ControllerWatchDeviceStateResponder {
    fn drop(&mut self) {
        self.control_handle.shutdown();
        // Safety: drops once, never accessed again
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
    }
}

impl fidl::endpoints::Responder for ControllerWatchDeviceStateResponder {
    type ControlHandle = ControllerControlHandle;

    fn control_handle(&self) -> &ControllerControlHandle {
        &self.control_handle
    }

    fn drop_without_shutdown(mut self) {
        // Safety: drops once, never accessed again due to mem::forget
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
        // Prevent Drop from running (which would shut down the channel)
        std::mem::forget(self);
    }
}

impl ControllerWatchDeviceStateResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut result: Result<&DeviceStateUpdate, i32>) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        if _result.is_err() {
            self.control_handle.shutdown();
        }
        self.drop_without_shutdown();
        _result
    }

    /// Similar to "send" but does not shutdown the channel if an error occurs.
    pub fn send_no_shutdown_on_err(
        self,
        mut result: Result<&DeviceStateUpdate, i32>,
    ) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut result: Result<&DeviceStateUpdate, i32>) -> Result<(), fidl::Error> {
        self.control_handle
            .inner
            .send::<fidl::encoding::FlexibleResultType<DeviceStateUpdate, i32>>(
                fidl::encoding::FlexibleResult::new(result),
                self.tx_id,
                0x44628a2275753738,
                fidl::encoding::DynamicFlags::FLEXIBLE,
            )
    }
}

#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct DeviceStateWatcherMarker;

impl fidl::endpoints::ProtocolMarker for DeviceStateWatcherMarker {
    type Proxy = DeviceStateWatcherProxy;
    type RequestStream = DeviceStateWatcherRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = DeviceStateWatcherSynchronousProxy;

    const DEBUG_NAME: &'static str = "(anonymous) DeviceStateWatcher";
}
pub type DeviceStateWatcherWatchDeviceStateResult = Result<DeviceStateUpdate, i32>;

pub trait DeviceStateWatcherProxyInterface: Send + Sync {
    type WatchDeviceStateResponseFut: std::future::Future<Output = Result<DeviceStateWatcherWatchDeviceStateResult, fidl::Error>>
        + Send;
    fn r#watch_device_state(&self) -> Self::WatchDeviceStateResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct DeviceStateWatcherSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for DeviceStateWatcherSynchronousProxy {
    type Proxy = DeviceStateWatcherProxy;
    type Protocol = DeviceStateWatcherMarker;

    fn from_channel(inner: fidl::Channel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    fn as_channel(&self) -> &fidl::Channel {
        self.client.as_channel()
    }
}

#[cfg(target_os = "fuchsia")]
impl DeviceStateWatcherSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        Self { client: fidl::client::sync::Client::new(channel) }
    }

    pub fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    /// Waits until an event arrives and returns it. It is safe for other
    /// threads to make concurrent requests while waiting for an event.
    pub fn wait_for_event(
        &self,
        deadline: zx::MonotonicInstant,
    ) -> Result<DeviceStateWatcherEvent, fidl::Error> {
        DeviceStateWatcherEvent::decode(
            self.client.wait_for_event::<DeviceStateWatcherMarker>(deadline)?,
        )
    }

    /// Notify a client of an updated device state value via a hanging get.
    /// The first time this is called, it will return right away with the
    /// current state. Subsequent calls will hang until there is a change
    /// to report.
    /// Returns a table containing the updated device state.
    pub fn r#watch_device_state(
        &self,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<DeviceStateWatcherWatchDeviceStateResult, fidl::Error> {
        let _response = self.client.send_query::<
            fidl::encoding::EmptyPayload,
            fidl::encoding::FlexibleResultType<DeviceStateUpdate, i32>,
            DeviceStateWatcherMarker,
        >(
            (),
            0x44628a2275753738,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            ___deadline,
        )?
        .into_result::<DeviceStateWatcherMarker>("watch_device_state")?;
        Ok(_response.map(|x| x))
    }
}

#[cfg(target_os = "fuchsia")]
impl From<DeviceStateWatcherSynchronousProxy> for zx::NullableHandle {
    fn from(value: DeviceStateWatcherSynchronousProxy) -> Self {
        value.into_channel().into()
    }
}

#[cfg(target_os = "fuchsia")]
impl From<fidl::Channel> for DeviceStateWatcherSynchronousProxy {
    fn from(value: fidl::Channel) -> Self {
        Self::new(value)
    }
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::FromClient for DeviceStateWatcherSynchronousProxy {
    type Protocol = DeviceStateWatcherMarker;

    fn from_client(value: fidl::endpoints::ClientEnd<DeviceStateWatcherMarker>) -> Self {
        Self::new(value.into_channel())
    }
}

#[derive(Debug, Clone)]
pub struct DeviceStateWatcherProxy {
    client: fidl::client::Client<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl fidl::endpoints::Proxy for DeviceStateWatcherProxy {
    type Protocol = DeviceStateWatcherMarker;

    fn from_channel(inner: ::fidl::AsyncChannel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> Result<::fidl::AsyncChannel, Self> {
        self.client.into_channel().map_err(|client| Self { client })
    }

    fn as_channel(&self) -> &::fidl::AsyncChannel {
        self.client.as_channel()
    }
}

impl DeviceStateWatcherProxy {
    /// Create a new Proxy for fuchsia.hardware.usb.policy/DeviceStateWatcher.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name =
            <DeviceStateWatcherMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::Client::new(channel, protocol_name) }
    }

    /// Get a Stream of events from the remote end of the protocol.
    ///
    /// # Panics
    ///
    /// Panics if the event stream was already taken.
    pub fn take_event_stream(&self) -> DeviceStateWatcherEventStream {
        DeviceStateWatcherEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Notify a client of an updated device state value via a hanging get.
    /// The first time this is called, it will return right away with the
    /// current state. Subsequent calls will hang until there is a change
    /// to report.
    /// Returns a table containing the updated device state.
    pub fn r#watch_device_state(
        &self,
    ) -> fidl::client::QueryResponseFut<
        DeviceStateWatcherWatchDeviceStateResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        DeviceStateWatcherProxyInterface::r#watch_device_state(self)
    }
}

impl DeviceStateWatcherProxyInterface for DeviceStateWatcherProxy {
    type WatchDeviceStateResponseFut = fidl::client::QueryResponseFut<
        DeviceStateWatcherWatchDeviceStateResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#watch_device_state(&self) -> Self::WatchDeviceStateResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<DeviceStateWatcherWatchDeviceStateResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::FlexibleResultType<DeviceStateUpdate, i32>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x44628a2275753738,
            >(_buf?)?
            .into_result::<DeviceStateWatcherMarker>("watch_device_state")?;
            Ok(_response.map(|x| x))
        }
        self.client.send_query_and_decode::<
            fidl::encoding::EmptyPayload,
            DeviceStateWatcherWatchDeviceStateResult,
        >(
            (),
            0x44628a2275753738,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            _decode,
        )
    }
}

pub struct DeviceStateWatcherEventStream {
    event_receiver: fidl::client::EventReceiver<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl std::marker::Unpin for DeviceStateWatcherEventStream {}

impl futures::stream::FusedStream for DeviceStateWatcherEventStream {
    fn is_terminated(&self) -> bool {
        self.event_receiver.is_terminated()
    }
}

impl futures::Stream for DeviceStateWatcherEventStream {
    type Item = Result<DeviceStateWatcherEvent, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        match futures::ready!(futures::stream::StreamExt::poll_next_unpin(
            &mut self.event_receiver,
            cx
        )?) {
            Some(buf) => std::task::Poll::Ready(Some(DeviceStateWatcherEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

#[derive(Debug)]
pub enum DeviceStateWatcherEvent {
    #[non_exhaustive]
    _UnknownEvent {
        /// Ordinal of the event that was sent.
        ordinal: u64,
    },
}

impl DeviceStateWatcherEvent {
    /// Decodes a message buffer as a [`DeviceStateWatcherEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<DeviceStateWatcherEvent, fidl::Error> {
        let (bytes, _handles) = buf.split_mut();
        let (tx_header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;
        debug_assert_eq!(tx_header.tx_id, 0);
        match tx_header.ordinal {
            _ if tx_header.dynamic_flags().contains(fidl::encoding::DynamicFlags::FLEXIBLE) => {
                Ok(DeviceStateWatcherEvent::_UnknownEvent { ordinal: tx_header.ordinal })
            }
            _ => Err(fidl::Error::UnknownOrdinal {
                ordinal: tx_header.ordinal,
                protocol_name:
                    <DeviceStateWatcherMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

/// A Stream of incoming requests for fuchsia.hardware.usb.policy/DeviceStateWatcher.
pub struct DeviceStateWatcherRequestStream {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
    is_terminated: bool,
}

impl std::marker::Unpin for DeviceStateWatcherRequestStream {}

impl futures::stream::FusedStream for DeviceStateWatcherRequestStream {
    fn is_terminated(&self) -> bool {
        self.is_terminated
    }
}

impl fidl::endpoints::RequestStream for DeviceStateWatcherRequestStream {
    type Protocol = DeviceStateWatcherMarker;
    type ControlHandle = DeviceStateWatcherControlHandle;

    fn from_channel(channel: ::fidl::AsyncChannel) -> Self {
        Self { inner: std::sync::Arc::new(fidl::ServeInner::new(channel)), is_terminated: false }
    }

    fn control_handle(&self) -> Self::ControlHandle {
        DeviceStateWatcherControlHandle { inner: self.inner.clone() }
    }

    fn into_inner(
        self,
    ) -> (::std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>, bool)
    {
        (self.inner, self.is_terminated)
    }

    fn from_inner(
        inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
        is_terminated: bool,
    ) -> Self {
        Self { inner, is_terminated }
    }
}

impl futures::Stream for DeviceStateWatcherRequestStream {
    type Item = Result<DeviceStateWatcherRequest, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        let this = &mut *self;
        if this.inner.check_shutdown(cx) {
            this.is_terminated = true;
            return std::task::Poll::Ready(None);
        }
        if this.is_terminated {
            panic!("polled DeviceStateWatcherRequestStream after completion");
        }
        fidl::encoding::with_tls_decode_buf::<_, fidl::encoding::DefaultFuchsiaResourceDialect>(
            |bytes, handles| {
                match this.inner.channel().read_etc(cx, bytes, handles) {
                    std::task::Poll::Ready(Ok(())) => {}
                    std::task::Poll::Pending => return std::task::Poll::Pending,
                    std::task::Poll::Ready(Err(zx_status::Status::PEER_CLOSED)) => {
                        this.is_terminated = true;
                        return std::task::Poll::Ready(None);
                    }
                    std::task::Poll::Ready(Err(e)) => {
                        return std::task::Poll::Ready(Some(Err(fidl::Error::ServerRequestRead(
                            e.into(),
                        ))));
                    }
                }

                // A message has been received from the channel
                let (header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;

                std::task::Poll::Ready(Some(match header.ordinal {
                0x44628a2275753738 => {
                    header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                    let mut req = fidl::new_empty!(fidl::encoding::EmptyPayload, fidl::encoding::DefaultFuchsiaResourceDialect);
                    fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<fidl::encoding::EmptyPayload>(&header, _body_bytes, handles, &mut req)?;
                    let control_handle = DeviceStateWatcherControlHandle {
                        inner: this.inner.clone(),
                    };
                    Ok(DeviceStateWatcherRequest::WatchDeviceState {
                        responder: DeviceStateWatcherWatchDeviceStateResponder {
                            control_handle: std::mem::ManuallyDrop::new(control_handle),
                            tx_id: header.tx_id,
                        },
                    })
                }
                _ if header.tx_id == 0 && header.dynamic_flags().contains(fidl::encoding::DynamicFlags::FLEXIBLE) => {
                    Ok(DeviceStateWatcherRequest::_UnknownMethod {
                        ordinal: header.ordinal,
                        control_handle: DeviceStateWatcherControlHandle { inner: this.inner.clone() },
                        method_type: fidl::MethodType::OneWay,
                    })
                }
                _ if header.dynamic_flags().contains(fidl::encoding::DynamicFlags::FLEXIBLE) => {
                    this.inner.send_framework_err(
                        fidl::encoding::FrameworkErr::UnknownMethod,
                        header.tx_id,
                        header.ordinal,
                        header.dynamic_flags(),
                        (bytes, handles),
                    )?;
                    Ok(DeviceStateWatcherRequest::_UnknownMethod {
                        ordinal: header.ordinal,
                        control_handle: DeviceStateWatcherControlHandle { inner: this.inner.clone() },
                        method_type: fidl::MethodType::TwoWay,
                    })
                }
                _ => Err(fidl::Error::UnknownOrdinal {
                    ordinal: header.ordinal,
                    protocol_name: <DeviceStateWatcherMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                }),
            }))
            },
        )
    }
}

/// An interface to watch for updates to the USB device state.
#[derive(Debug)]
pub enum DeviceStateWatcherRequest {
    /// Notify a client of an updated device state value via a hanging get.
    /// The first time this is called, it will return right away with the
    /// current state. Subsequent calls will hang until there is a change
    /// to report.
    /// Returns a table containing the updated device state.
    WatchDeviceState { responder: DeviceStateWatcherWatchDeviceStateResponder },
    /// An interaction was received which does not match any known method.
    #[non_exhaustive]
    _UnknownMethod {
        /// Ordinal of the method that was called.
        ordinal: u64,
        control_handle: DeviceStateWatcherControlHandle,
        method_type: fidl::MethodType,
    },
}

impl DeviceStateWatcherRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_watch_device_state(self) -> Option<(DeviceStateWatcherWatchDeviceStateResponder)> {
        if let DeviceStateWatcherRequest::WatchDeviceState { responder } = self {
            Some((responder))
        } else {
            None
        }
    }

    /// Name of the method defined in FIDL
    pub fn method_name(&self) -> &'static str {
        match *self {
            DeviceStateWatcherRequest::WatchDeviceState { .. } => "watch_device_state",
            DeviceStateWatcherRequest::_UnknownMethod {
                method_type: fidl::MethodType::OneWay,
                ..
            } => "unknown one-way method",
            DeviceStateWatcherRequest::_UnknownMethod {
                method_type: fidl::MethodType::TwoWay,
                ..
            } => "unknown two-way method",
        }
    }
}

#[derive(Debug, Clone)]
pub struct DeviceStateWatcherControlHandle {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
}

impl fidl::endpoints::ControlHandle for DeviceStateWatcherControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }

    fn shutdown_with_epitaph(&self, status: zx_status::Status) {
        self.inner.shutdown_with_epitaph(status)
    }

    fn is_closed(&self) -> bool {
        self.inner.channel().is_closed()
    }
    fn on_closed(&self) -> fidl::OnSignalsRef<'_> {
        self.inner.channel().on_closed()
    }

    #[cfg(target_os = "fuchsia")]
    fn signal_peer(
        &self,
        clear_mask: zx::Signals,
        set_mask: zx::Signals,
    ) -> Result<(), zx_status::Status> {
        use fidl::Peered;
        self.inner.channel().signal_peer(clear_mask, set_mask)
    }
}

impl DeviceStateWatcherControlHandle {}

#[must_use = "FIDL methods require a response to be sent"]
#[derive(Debug)]
pub struct DeviceStateWatcherWatchDeviceStateResponder {
    control_handle: std::mem::ManuallyDrop<DeviceStateWatcherControlHandle>,
    tx_id: u32,
}

/// Set the the channel to be shutdown (see [`DeviceStateWatcherControlHandle::shutdown`])
/// if the responder is dropped without sending a response, so that the client
/// doesn't hang. To prevent this behavior, call `drop_without_shutdown`.
impl std::ops::Drop for DeviceStateWatcherWatchDeviceStateResponder {
    fn drop(&mut self) {
        self.control_handle.shutdown();
        // Safety: drops once, never accessed again
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
    }
}

impl fidl::endpoints::Responder for DeviceStateWatcherWatchDeviceStateResponder {
    type ControlHandle = DeviceStateWatcherControlHandle;

    fn control_handle(&self) -> &DeviceStateWatcherControlHandle {
        &self.control_handle
    }

    fn drop_without_shutdown(mut self) {
        // Safety: drops once, never accessed again due to mem::forget
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
        // Prevent Drop from running (which would shut down the channel)
        std::mem::forget(self);
    }
}

impl DeviceStateWatcherWatchDeviceStateResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut result: Result<&DeviceStateUpdate, i32>) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        if _result.is_err() {
            self.control_handle.shutdown();
        }
        self.drop_without_shutdown();
        _result
    }

    /// Similar to "send" but does not shutdown the channel if an error occurs.
    pub fn send_no_shutdown_on_err(
        self,
        mut result: Result<&DeviceStateUpdate, i32>,
    ) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut result: Result<&DeviceStateUpdate, i32>) -> Result<(), fidl::Error> {
        self.control_handle
            .inner
            .send::<fidl::encoding::FlexibleResultType<DeviceStateUpdate, i32>>(
                fidl::encoding::FlexibleResult::new(result),
                self.tx_id,
                0x44628a2275753738,
                fidl::encoding::DynamicFlags::FLEXIBLE,
            )
    }
}

#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct ServiceMarker;

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::ServiceMarker for ServiceMarker {
    type Proxy = ServiceProxy;
    type Request = ServiceRequest;
    const SERVICE_NAME: &'static str = "fuchsia.hardware.usb.policy.Service";
}

/// A request for one of the member protocols of Service.
///
/// A service definition for hardware USB policy, exposing the controller.
#[cfg(target_os = "fuchsia")]
pub enum ServiceRequest {
    /// A client end to connect to the Controller protocol.
    Controller(ControllerRequestStream),
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::ServiceRequest for ServiceRequest {
    type Service = ServiceMarker;

    fn dispatch(name: &str, _channel: fidl::AsyncChannel) -> Self {
        match name {
            "controller" => Self::Controller(
                <ControllerRequestStream as fidl::endpoints::RequestStream>::from_channel(_channel),
            ),
            _ => panic!("no such member protocol name for service Service"),
        }
    }

    fn member_names() -> &'static [&'static str] {
        &["controller"]
    }
}
/// A service definition for hardware USB policy, exposing the controller.
#[cfg(target_os = "fuchsia")]
pub struct ServiceProxy(#[allow(dead_code)] Box<dyn fidl::endpoints::MemberOpener>);

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::ServiceProxy for ServiceProxy {
    type Service = ServiceMarker;

    fn from_member_opener(opener: Box<dyn fidl::endpoints::MemberOpener>) -> Self {
        Self(opener)
    }
}

#[cfg(target_os = "fuchsia")]
impl ServiceProxy {
    /// A client end to connect to the Controller protocol.
    pub fn connect_to_controller(&self) -> Result<ControllerProxy, fidl::Error> {
        let (proxy, server_end) = fidl::endpoints::create_proxy::<ControllerMarker>();
        self.connect_channel_to_controller(server_end)?;
        Ok(proxy)
    }

    /// Like `connect_to_controller`, but returns a sync proxy.
    /// See [`Self::connect_to_controller`] for more details.
    pub fn connect_to_controller_sync(&self) -> Result<ControllerSynchronousProxy, fidl::Error> {
        let (proxy, server_end) = fidl::endpoints::create_sync_proxy::<ControllerMarker>();
        self.connect_channel_to_controller(server_end)?;
        Ok(proxy)
    }

    /// Like `connect_to_controller`, but accepts a server end.
    /// See [`Self::connect_to_controller`] for more details.
    pub fn connect_channel_to_controller(
        &self,
        server_end: fidl::endpoints::ServerEnd<ControllerMarker>,
    ) -> Result<(), fidl::Error> {
        self.0.open_member("controller", server_end.into_channel())
    }

    pub fn instance_name(&self) -> &str {
        self.0.instance_name()
    }
}

mod internal {
    use super::*;
}