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

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

use {
    bitflags::bitflags,
    fidl::{
        client::QueryResponseFut,
        endpoints::{ControlHandle as _, Responder as _},
    },
    fuchsia_zircon_status as zx_status,
    futures::future::{self, MaybeDone, TryFutureExt},
};

#[cfg(target_os = "fuchsia")]
use fuchsia_zircon as zx;

/// Used to return data from read transfers.
pub type ReadData = Vec<u8>;

/// The maximum number of transactions that can be specified in a call to `Transfer`.
pub const MAX_COUNT_TRANSACTIONS: u32 = 256;

/// Maximum length of the I2C Channel name.
pub const MAX_I2_C_NAME_LEN: u32 = 64;

/// Clients should be aware of the max channel message size when using large transfers or many
/// transactions. It is possible to generate a message that uses values less than the limits below
/// but is still too big for the channel.
///
/// The maximum number of bytes that can be read or written in a single `Transaction`.
pub const MAX_TRANSFER_SIZE: u32 = 32768;

#[derive(Clone, Debug, PartialEq)]
pub struct DeviceTransferRequest {
    pub transactions: Vec<Transaction>,
}

impl fidl::Persistable for DeviceTransferRequest {}

#[derive(Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct DeviceGetNameResponse {
    pub name: String,
}

impl fidl::Persistable for DeviceGetNameResponse {}

#[derive(Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct DeviceTransferResponse {
    pub read_data: Vec<Vec<u8>>,
}

impl fidl::Persistable for DeviceTransferResponse {}

/// `data_transfer` is mandatory, and specifies whether this transaction has a read or a write
/// transfer (see above).
/// `stop` is optional, and specifies whether this transaction is terminated by a stop condition (if
/// true) or by a repeated-start (if false or unspecified). If this transaction is the last in the
/// list then a stop condition is generated regardless of the value of `stop`.
#[derive(Clone, Debug, Default, PartialEq)]
pub struct Transaction {
    pub data_transfer: Option<DataTransfer>,
    pub stop: Option<bool>,
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

impl fidl::Persistable for Transaction {}

/// If `read_size` is set: This is a read transfer, and `read_size` bytes will be read from the
/// target.
/// If `write_data` is set: This is a write transfer, and `write_data` will be written to the
/// target.
#[derive(Clone, Debug)]
pub enum DataTransfer {
    ReadSize(u32),
    WriteData(Vec<u8>),
    #[doc(hidden)]
    __SourceBreaking {
        unknown_ordinal: u64,
    },
}

/// Pattern that matches an unknown `DataTransfer` member.
#[macro_export]
macro_rules! DataTransferUnknown {
    () => {
        _
    };
}

// Custom PartialEq so that unknown variants are not equal to themselves.
impl PartialEq for DataTransfer {
    fn eq(&self, other: &Self) -> bool {
        match (self, other) {
            (Self::ReadSize(x), Self::ReadSize(y)) => *x == *y,
            (Self::WriteData(x), Self::WriteData(y)) => *x == *y,
            _ => false,
        }
    }
}

impl DataTransfer {
    #[inline]
    pub fn ordinal(&self) -> u64 {
        match *self {
            Self::ReadSize(_) => 1,
            Self::WriteData(_) => 2,
            Self::__SourceBreaking { unknown_ordinal } => unknown_ordinal,
        }
    }

    #[inline]
    pub fn unknown_variant_for_testing() -> Self {
        Self::__SourceBreaking { unknown_ordinal: 0 }
    }

    #[inline]
    pub fn is_unknown(&self) -> bool {
        match self {
            Self::__SourceBreaking { .. } => true,
            _ => false,
        }
    }
}

impl fidl::Persistable for DataTransfer {}

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

impl fidl::endpoints::ProtocolMarker for DeviceMarker {
    type Proxy = DeviceProxy;
    type RequestStream = DeviceRequestStream;

    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = DeviceSynchronousProxy;

    const DEBUG_NAME: &'static str = "fuchsia.hardware.i2c.Device";
}
impl fidl::endpoints::DiscoverableProtocolMarker for DeviceMarker {}
pub type DeviceTransferResult = Result<Vec<Vec<u8>>, i32>;
pub type DeviceGetNameResult = Result<String, i32>;

pub trait DeviceProxyInterface: Send + Sync {
    type TransferResponseFut: std::future::Future<Output = Result<DeviceTransferResult, fidl::Error>>
        + Send;
    fn r#transfer(&self, transactions: &[Transaction]) -> Self::TransferResponseFut;
    type GetNameResponseFut: std::future::Future<Output = Result<DeviceGetNameResult, fidl::Error>>
        + Send;
    fn r#get_name(&self) -> Self::GetNameResponseFut;
}

#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct DeviceSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for DeviceSynchronousProxy {
    type Proxy = DeviceProxy;
    type Protocol = DeviceMarker;

    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 DeviceSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        let protocol_name = <DeviceMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::sync::Client::new(channel, protocol_name) }
    }

    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::Time) -> Result<DeviceEvent, fidl::Error> {
        DeviceEvent::decode(self.client.wait_for_event(deadline)?)
    }

    /// Issue one or more transactions to a particular I2C device.
    ///
    /// Each `Transaction` is performed in the order in which it appears in `transactions`. Data for
    /// read transfers (if there are any) is returned through `read_data`, which has one entry for
    /// each read transfer in `transactions`. Transaction processing continues until all transfers
    /// have been completed, an error occurs, or the target issues a NACK in response to a write
    /// transfer.
    ///
    /// The possible error values are:
    ///   ZX_ERR_INVALID_ARGS: `transactions` has zero elements, `data_transfer` was not specified
    ///     for a `Transaction`, or there was a zero-length `DataTransfer`.
    ///   ZX_ERR_OUT_OF_RANGE: A `DataTransfer` was too large to be handled by this I2C controller.
    ///   ZX_ERR_IO_NOT_PRESENT: The device did not respond to its I2C address.
    ///   ZX_ERR_IO_REFUSED: The device issued a NACK before the end of a write transfer.
    pub fn r#transfer(
        &self,
        mut transactions: &[Transaction],
        ___deadline: zx::Time,
    ) -> Result<DeviceTransferResult, fidl::Error> {
        let _response = self.client.send_query::<
            DeviceTransferRequest,
            fidl::encoding::ResultType<DeviceTransferResponse, i32>,
        >(
            (transactions,),
            0xc169f6c7849333b,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok(_response.map(|x| x.read_data))
    }

    /// Get the name of this I2C Device. Returns ZX_ERR_NOT_SUPPORTED if the
    /// name is unspecified or the empty string.
    pub fn r#get_name(&self, ___deadline: zx::Time) -> Result<DeviceGetNameResult, fidl::Error> {
        let _response = self.client.send_query::<
            fidl::encoding::EmptyPayload,
            fidl::encoding::ResultType<DeviceGetNameResponse, i32>,
        >(
            (),
            0x745268a50651f102,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok(_response.map(|x| x.name))
    }
}

#[derive(Debug, Clone)]
pub struct DeviceProxy {
    client: fidl::client::Client,
}

impl fidl::endpoints::Proxy for DeviceProxy {
    type Protocol = DeviceMarker;

    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 DeviceProxy {
    /// Create a new Proxy for fuchsia.hardware.i2c/Device.
    pub fn new(channel: fidl::AsyncChannel) -> Self {
        let protocol_name = <DeviceMarker 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) -> DeviceEventStream {
        DeviceEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Issue one or more transactions to a particular I2C device.
    ///
    /// Each `Transaction` is performed in the order in which it appears in `transactions`. Data for
    /// read transfers (if there are any) is returned through `read_data`, which has one entry for
    /// each read transfer in `transactions`. Transaction processing continues until all transfers
    /// have been completed, an error occurs, or the target issues a NACK in response to a write
    /// transfer.
    ///
    /// The possible error values are:
    ///   ZX_ERR_INVALID_ARGS: `transactions` has zero elements, `data_transfer` was not specified
    ///     for a `Transaction`, or there was a zero-length `DataTransfer`.
    ///   ZX_ERR_OUT_OF_RANGE: A `DataTransfer` was too large to be handled by this I2C controller.
    ///   ZX_ERR_IO_NOT_PRESENT: The device did not respond to its I2C address.
    ///   ZX_ERR_IO_REFUSED: The device issued a NACK before the end of a write transfer.
    pub fn r#transfer(
        &self,
        mut transactions: &[Transaction],
    ) -> fidl::client::QueryResponseFut<DeviceTransferResult> {
        DeviceProxyInterface::r#transfer(self, transactions)
    }

    /// Get the name of this I2C Device. Returns ZX_ERR_NOT_SUPPORTED if the
    /// name is unspecified or the empty string.
    pub fn r#get_name(&self) -> fidl::client::QueryResponseFut<DeviceGetNameResult> {
        DeviceProxyInterface::r#get_name(self)
    }
}

impl DeviceProxyInterface for DeviceProxy {
    type TransferResponseFut = fidl::client::QueryResponseFut<DeviceTransferResult>;
    fn r#transfer(&self, mut transactions: &[Transaction]) -> Self::TransferResponseFut {
        fn _decode(
            mut _buf: Result<fidl::MessageBufEtc, fidl::Error>,
        ) -> Result<DeviceTransferResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::ResultType<DeviceTransferResponse, i32>,
                0xc169f6c7849333b,
            >(_buf?)?;
            Ok(_response.map(|x| x.read_data))
        }
        self.client.send_query_and_decode::<DeviceTransferRequest, DeviceTransferResult>(
            (transactions,),
            0xc169f6c7849333b,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }

    type GetNameResponseFut = fidl::client::QueryResponseFut<DeviceGetNameResult>;
    fn r#get_name(&self) -> Self::GetNameResponseFut {
        fn _decode(
            mut _buf: Result<fidl::MessageBufEtc, fidl::Error>,
        ) -> Result<DeviceGetNameResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::ResultType<DeviceGetNameResponse, i32>,
                0x745268a50651f102,
            >(_buf?)?;
            Ok(_response.map(|x| x.name))
        }
        self.client.send_query_and_decode::<fidl::encoding::EmptyPayload, DeviceGetNameResult>(
            (),
            0x745268a50651f102,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }
}

pub struct DeviceEventStream {
    event_receiver: fidl::client::EventReceiver,
}

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

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

impl futures::Stream for DeviceEventStream {
    type Item = Result<DeviceEvent, 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(DeviceEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

#[derive(Debug)]
pub enum DeviceEvent {}

impl DeviceEvent {
    /// Decodes a message buffer as a [`DeviceEvent`].
    fn decode(mut buf: fidl::MessageBufEtc) -> Result<DeviceEvent, 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 {
            _ => Err(fidl::Error::UnknownOrdinal {
                ordinal: tx_header.ordinal,
                protocol_name: <DeviceMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

/// A Stream of incoming requests for fuchsia.hardware.i2c/Device.
pub struct DeviceRequestStream {
    inner: std::sync::Arc<fidl::ServeInner>,
    is_terminated: bool,
}

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

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

impl fidl::endpoints::RequestStream for DeviceRequestStream {
    type Protocol = DeviceMarker;
    type ControlHandle = DeviceControlHandle;

    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 {
        DeviceControlHandle { inner: self.inner.clone() }
    }

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

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

impl futures::Stream for DeviceRequestStream {
    type Item = Result<DeviceRequest, 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 DeviceRequestStream after completion");
        }
        fidl::encoding::with_tls_decode_buf(|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))))
                }
            }

            // 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 {
                0xc169f6c7849333b => {
                    header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                    let mut req = fidl::new_empty!(DeviceTransferRequest);
                    fidl::encoding::Decoder::decode_into::<DeviceTransferRequest>(
                        &header,
                        _body_bytes,
                        handles,
                        &mut req,
                    )?;
                    let control_handle = DeviceControlHandle { inner: this.inner.clone() };
                    Ok(DeviceRequest::Transfer {
                        transactions: req.transactions,

                        responder: DeviceTransferResponder {
                            control_handle: std::mem::ManuallyDrop::new(control_handle),
                            tx_id: header.tx_id,
                        },
                    })
                }
                0x745268a50651f102 => {
                    header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                    let mut req = fidl::new_empty!(fidl::encoding::EmptyPayload);
                    fidl::encoding::Decoder::decode_into::<fidl::encoding::EmptyPayload>(
                        &header,
                        _body_bytes,
                        handles,
                        &mut req,
                    )?;
                    let control_handle = DeviceControlHandle { inner: this.inner.clone() };
                    Ok(DeviceRequest::GetName {
                        responder: DeviceGetNameResponder {
                            control_handle: std::mem::ManuallyDrop::new(control_handle),
                            tx_id: header.tx_id,
                        },
                    })
                }
                _ => Err(fidl::Error::UnknownOrdinal {
                    ordinal: header.ordinal,
                    protocol_name: <DeviceMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                }),
            }))
        })
    }
}

#[derive(Debug)]
pub enum DeviceRequest {
    /// Issue one or more transactions to a particular I2C device.
    ///
    /// Each `Transaction` is performed in the order in which it appears in `transactions`. Data for
    /// read transfers (if there are any) is returned through `read_data`, which has one entry for
    /// each read transfer in `transactions`. Transaction processing continues until all transfers
    /// have been completed, an error occurs, or the target issues a NACK in response to a write
    /// transfer.
    ///
    /// The possible error values are:
    ///   ZX_ERR_INVALID_ARGS: `transactions` has zero elements, `data_transfer` was not specified
    ///     for a `Transaction`, or there was a zero-length `DataTransfer`.
    ///   ZX_ERR_OUT_OF_RANGE: A `DataTransfer` was too large to be handled by this I2C controller.
    ///   ZX_ERR_IO_NOT_PRESENT: The device did not respond to its I2C address.
    ///   ZX_ERR_IO_REFUSED: The device issued a NACK before the end of a write transfer.
    Transfer { transactions: Vec<Transaction>, responder: DeviceTransferResponder },
    /// Get the name of this I2C Device. Returns ZX_ERR_NOT_SUPPORTED if the
    /// name is unspecified or the empty string.
    GetName { responder: DeviceGetNameResponder },
}

impl DeviceRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_transfer(self) -> Option<(Vec<Transaction>, DeviceTransferResponder)> {
        if let DeviceRequest::Transfer { transactions, responder } = self {
            Some((transactions, responder))
        } else {
            None
        }
    }

    #[allow(irrefutable_let_patterns)]
    pub fn into_get_name(self) -> Option<(DeviceGetNameResponder)> {
        if let DeviceRequest::GetName { responder } = self {
            Some((responder))
        } else {
            None
        }
    }

    /// Name of the method defined in FIDL
    pub fn method_name(&self) -> &'static str {
        match *self {
            DeviceRequest::Transfer { .. } => "transfer",
            DeviceRequest::GetName { .. } => "get_name",
        }
    }
}

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

impl fidl::endpoints::ControlHandle for DeviceControlHandle {
    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()
    }
}

impl DeviceControlHandle {}

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

/// Set the the channel to be shutdown (see [`DeviceControlHandle::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 DeviceTransferResponder {
    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 DeviceTransferResponder {
    type ControlHandle = DeviceControlHandle;

    fn control_handle(&self) -> &DeviceControlHandle {
        &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 DeviceTransferResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut result: Result<&[Vec<u8>], 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<&[Vec<u8>], i32>,
    ) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut result: Result<&[Vec<u8>], i32>) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::ResultType<DeviceTransferResponse, i32>>(
            result.map(|read_data| (read_data,)),
            self.tx_id,
            0xc169f6c7849333b,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

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

/// Set the the channel to be shutdown (see [`DeviceControlHandle::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 DeviceGetNameResponder {
    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 DeviceGetNameResponder {
    type ControlHandle = DeviceControlHandle;

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

    fn send_raw(&self, mut result: Result<&str, i32>) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::ResultType<DeviceGetNameResponse, i32>>(
            result.map(|name| (name,)),
            self.tx_id,
            0x745268a50651f102,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

#[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.i2c.Service";
}

/// A request for one of the member protocols of Service.
///
#[cfg(target_os = "fuchsia")]
pub enum ServiceRequest {
    Device(DeviceRequestStream),
}

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

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

    fn member_names() -> &'static [&'static str] {
        &["device"]
    }
}
#[cfg(target_os = "fuchsia")]
pub struct ServiceProxy(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 {
    pub fn connect_to_device(&self) -> Result<DeviceProxy, fidl::Error> {
        let (proxy, server_end) = fidl::endpoints::create_proxy::<DeviceMarker>()?;
        self.connect_channel_to_device(server_end)?;
        Ok(proxy)
    }

    /// Like `connect_to_device`, but accepts a server end.
    pub fn connect_channel_to_device(
        &self,
        server_end: fidl::endpoints::ServerEnd<DeviceMarker>,
    ) -> Result<(), fidl::Error> {
        self.0.open_member("device", server_end.into_channel())
    }
}

mod internal {
    use super::*;

    unsafe impl fidl::encoding::TypeMarker for DeviceTransferRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }
    impl fidl::encoding::ValueTypeMarker for DeviceTransferRequest {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<DeviceTransferRequest> for &DeviceTransferRequest {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<DeviceTransferRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<DeviceTransferRequest>::encode(
                (
                    <fidl::encoding::Vector<Transaction, 256> as fidl::encoding::ValueTypeMarker>::borrow(&self.transactions),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<T0: fidl::encoding::Encode<fidl::encoding::Vector<Transaction, 256>>>
        fidl::encoding::Encode<DeviceTransferRequest> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<DeviceTransferRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for DeviceTransferRequest {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { transactions: fidl::new_empty!(fidl::encoding::Vector<Transaction, 256>) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(fidl::encoding::Vector<Transaction, 256>, &mut self.transactions, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    unsafe impl fidl::encoding::TypeMarker for DeviceGetNameResponse {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }
    impl fidl::encoding::ValueTypeMarker for DeviceGetNameResponse {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<DeviceGetNameResponse> for &DeviceGetNameResponse {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<DeviceGetNameResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<DeviceGetNameResponse>::encode(
                (<fidl::encoding::BoundedString<64> as fidl::encoding::ValueTypeMarker>::borrow(
                    &self.name,
                ),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<T0: fidl::encoding::Encode<fidl::encoding::BoundedString<64>>>
        fidl::encoding::Encode<DeviceGetNameResponse> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<DeviceGetNameResponse>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for DeviceGetNameResponse {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { name: fidl::new_empty!(fidl::encoding::BoundedString<64>) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(
                fidl::encoding::BoundedString<64>,
                &mut self.name,
                decoder,
                offset + 0,
                _depth
            )?;
            Ok(())
        }
    }

    unsafe impl fidl::encoding::TypeMarker for DeviceTransferResponse {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }
    impl fidl::encoding::ValueTypeMarker for DeviceTransferResponse {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<DeviceTransferResponse> for &DeviceTransferResponse {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<DeviceTransferResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<DeviceTransferResponse>::encode(
                (
                    <fidl::encoding::Vector<fidl::encoding::Vector<u8, 32768>, 256> as fidl::encoding::ValueTypeMarker>::borrow(&self.read_data),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            T0: fidl::encoding::Encode<fidl::encoding::Vector<fidl::encoding::Vector<u8, 32768>, 256>>,
        > fidl::encoding::Encode<DeviceTransferResponse> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<DeviceTransferResponse>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for DeviceTransferResponse {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                read_data: fidl::new_empty!(
                    fidl::encoding::Vector<fidl::encoding::Vector<u8, 32768>, 256>
                ),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(
                fidl::encoding::Vector<fidl::encoding::Vector<u8, 32768>, 256>,
                &mut self.read_data,
                decoder,
                offset + 0,
                _depth
            )?;
            Ok(())
        }
    }

    impl Transaction {
        #[inline(always)]
        fn max_ordinal_present(&self) -> u64 {
            if let Some(_) = self.stop {
                return 2;
            }
            if let Some(_) = self.data_transfer {
                return 1;
            }
            0
        }
    }

    unsafe impl fidl::encoding::TypeMarker for Transaction {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }
    impl fidl::encoding::ValueTypeMarker for Transaction {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<Transaction> for &Transaction {
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Transaction>(offset);
            // Vector header
            let max_ordinal: u64 = self.max_ordinal_present();
            encoder.write_num(max_ordinal, offset);
            encoder.write_num(fidl::encoding::ALLOC_PRESENT_U64, offset + 8);
            // Calling encoder.out_of_line_offset(0) is not allowed.
            if max_ordinal == 0 {
                return Ok(());
            }
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = max_ordinal as usize * envelope_size;
            #[allow(unused_variables)]
            let offset = encoder.out_of_line_offset(bytes_len);
            let mut _prev_end_offset: usize = 0;
            if 1 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (1 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<DataTransfer>(
                self.data_transfer
                    .as_ref()
                    .map(<DataTransfer as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;
            if 2 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (2 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<bool>(
                self.stop.as_ref().map(<bool as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;

            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for Transaction {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::default()
        }

        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let len = match fidl::encoding::decode_vector_header(decoder, offset)? {
                None => return Err(fidl::Error::NotNullable),
                Some(len) => len,
            };
            // Calling decoder.out_of_line_offset(0) is not allowed.
            if len == 0 {
                return Ok(());
            };
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = len * envelope_size;
            let offset = decoder.out_of_line_offset(bytes_len)?;
            // Decode the envelope for each type.
            let mut _next_ordinal_to_read = 0;
            let mut next_offset = offset;
            let end_offset = offset + bytes_len;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 1 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size =
                    <DataTransfer as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref =
                    self.data_transfer.get_or_insert_with(|| fidl::new_empty!(DataTransfer));
                fidl::decode!(DataTransfer, val_ref, decoder, inner_offset, inner_depth)?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 2 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size =
                    <bool as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.stop.get_or_insert_with(|| fidl::new_empty!(bool));
                fidl::decode!(bool, val_ref, decoder, inner_offset, inner_depth)?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;

            // Decode the remaining unknown envelopes.
            while next_offset < end_offset {
                _next_ordinal_to_read += 1;
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                next_offset += envelope_size;
            }

            Ok(())
        }
    }

    unsafe impl fidl::encoding::TypeMarker for DataTransfer {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }
    impl fidl::encoding::ValueTypeMarker for DataTransfer {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<DataTransfer> for &DataTransfer {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<DataTransfer>(offset);
            encoder.write_num::<u64>(self.ordinal(), offset);
            match self {
                DataTransfer::ReadSize(ref val) => fidl::encoding::encode_in_envelope::<u32>(
                    <u32 as fidl::encoding::ValueTypeMarker>::borrow(val),
                    encoder,
                    offset + 8,
                    _depth,
                ),
                DataTransfer::WriteData(ref val) => fidl::encoding::encode_in_envelope::<
                    fidl::encoding::Vector<u8, 32768>,
                >(
                    <fidl::encoding::Vector<u8, 32768> as fidl::encoding::ValueTypeMarker>::borrow(
                        val,
                    ),
                    encoder,
                    offset + 8,
                    _depth,
                ),
                DataTransfer::__SourceBreaking { .. } => Err(fidl::Error::UnknownUnionTag),
            }
        }
    }

    impl fidl::encoding::Decode<Self> for DataTransfer {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::__SourceBreaking { unknown_ordinal: 0 }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            #[allow(unused_variables)]
            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            let (ordinal, inlined, num_bytes, num_handles) =
                fidl::encoding::decode_union_inline_portion(decoder, offset)?;

            let member_inline_size = match ordinal {
                1 => <u32 as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                2 => {
                    <fidl::encoding::Vector<u8, 32768> as fidl::encoding::TypeMarker>::inline_size(
                        decoder.context,
                    )
                }
                0 => return Err(fidl::Error::UnknownUnionTag),
                _ => num_bytes as usize,
            };

            if inlined != (member_inline_size <= 4) {
                return Err(fidl::Error::InvalidInlineBitInEnvelope);
            }
            let _inner_offset;
            if inlined {
                decoder.check_inline_envelope_padding(offset + 8, member_inline_size)?;
                _inner_offset = offset + 8;
            } else {
                depth.increment()?;
                _inner_offset = decoder.out_of_line_offset(member_inline_size)?;
            }
            match ordinal {
                1 => {
                    #[allow(irrefutable_let_patterns)]
                    if let DataTransfer::ReadSize(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = DataTransfer::ReadSize(fidl::new_empty!(u32));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let DataTransfer::ReadSize(ref mut val) = self {
                        fidl::decode!(u32, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                2 => {
                    #[allow(irrefutable_let_patterns)]
                    if let DataTransfer::WriteData(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = DataTransfer::WriteData(
                            fidl::new_empty!(fidl::encoding::Vector<u8, 32768>),
                        );
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let DataTransfer::WriteData(ref mut val) = self {
                        fidl::decode!(fidl::encoding::Vector<u8, 32768>, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                #[allow(deprecated)]
                ordinal => {
                    for _ in 0..num_handles {
                        decoder.drop_next_handle()?;
                    }
                    *self = DataTransfer::__SourceBreaking { unknown_ordinal: ordinal };
                }
            }
            if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize) {
                return Err(fidl::Error::InvalidNumBytesInEnvelope);
            }
            if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                return Err(fidl::Error::InvalidNumHandlesInEnvelope);
            }
            Ok(())
        }
    }
}