fidl_fuchsia_storage_mapping/

fidl_fuchsia_storage_mapping.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_storage_mapping_common::*;
use futures::future::{self, MaybeDone, TryFutureExt};
use zx_status;

#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct MappingProviderOpenSessionRequest {
    pub session: fidl::endpoints::ServerEnd<MappingSessionMarker>,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect>
    for MappingProviderOpenSessionRequest
{
}

#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct MappingProviderOpenSessionResponse {
    pub mapping_vmo: fidl::Vmo,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect>
    for MappingProviderOpenSessionResponse
{
}

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

impl fidl::endpoints::ProtocolMarker for MappingProviderMarker {
    type Proxy = MappingProviderProxy;
    type RequestStream = MappingProviderRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = MappingProviderSynchronousProxy;

    const DEBUG_NAME: &'static str = "fuchsia.storage.mapping.MappingProvider";
}
impl fidl::endpoints::DiscoverableProtocolMarker for MappingProviderMarker {}
pub type MappingProviderOpenSessionResult = Result<fidl::Vmo, i32>;

pub trait MappingProviderProxyInterface: Send + Sync {
    type OpenSessionResponseFut: std::future::Future<Output = Result<MappingProviderOpenSessionResult, fidl::Error>>
        + Send;
    fn r#open_session(
        &self,
        session: fidl::endpoints::ServerEnd<MappingSessionMarker>,
    ) -> Self::OpenSessionResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct MappingProviderSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for MappingProviderSynchronousProxy {
    type Proxy = MappingProviderProxy;
    type Protocol = MappingProviderMarker;

    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 MappingProviderSynchronousProxy {
    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<MappingProviderEvent, fidl::Error> {
        MappingProviderEvent::decode(self.client.wait_for_event::<MappingProviderMarker>(deadline)?)
    }

    /// Establishes a new mapping session, returning the mapping VMO.
    pub fn r#open_session(
        &self,
        mut session: fidl::endpoints::ServerEnd<MappingSessionMarker>,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<MappingProviderOpenSessionResult, fidl::Error> {
        let _response = self.client.send_query::<
            MappingProviderOpenSessionRequest,
            fidl::encoding::FlexibleResultType<MappingProviderOpenSessionResponse, i32>,
            MappingProviderMarker,
        >(
            (session,),
            0x392ee248d504919a,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            ___deadline,
        )?
        .into_result::<MappingProviderMarker>("open_session")?;
        Ok(_response.map(|x| x.mapping_vmo))
    }
}

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

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

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

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

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

impl fidl::endpoints::Proxy for MappingProviderProxy {
    type Protocol = MappingProviderMarker;

    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 MappingProviderProxy {
    /// Create a new Proxy for fuchsia.storage.mapping/MappingProvider.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <MappingProviderMarker 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) -> MappingProviderEventStream {
        MappingProviderEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Establishes a new mapping session, returning the mapping VMO.
    pub fn r#open_session(
        &self,
        mut session: fidl::endpoints::ServerEnd<MappingSessionMarker>,
    ) -> fidl::client::QueryResponseFut<
        MappingProviderOpenSessionResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        MappingProviderProxyInterface::r#open_session(self, session)
    }
}

impl MappingProviderProxyInterface for MappingProviderProxy {
    type OpenSessionResponseFut = fidl::client::QueryResponseFut<
        MappingProviderOpenSessionResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#open_session(
        &self,
        mut session: fidl::endpoints::ServerEnd<MappingSessionMarker>,
    ) -> Self::OpenSessionResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<MappingProviderOpenSessionResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::FlexibleResultType<MappingProviderOpenSessionResponse, i32>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x392ee248d504919a,
            >(_buf?)?
            .into_result::<MappingProviderMarker>("open_session")?;
            Ok(_response.map(|x| x.mapping_vmo))
        }
        self.client.send_query_and_decode::<
            MappingProviderOpenSessionRequest,
            MappingProviderOpenSessionResult,
        >(
            (session,),
            0x392ee248d504919a,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            _decode,
        )
    }
}

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

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

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

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

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

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

/// A Stream of incoming requests for fuchsia.storage.mapping/MappingProvider.
pub struct MappingProviderRequestStream {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
    is_terminated: bool,
}

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

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

impl fidl::endpoints::RequestStream for MappingProviderRequestStream {
    type Protocol = MappingProviderMarker;
    type ControlHandle = MappingProviderControlHandle;

    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 {
        MappingProviderControlHandle { 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 MappingProviderRequestStream {
    type Item = Result<MappingProviderRequest, 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 MappingProviderRequestStream 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 {
                    0x392ee248d504919a => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            MappingProviderOpenSessionRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<MappingProviderOpenSessionRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle =
                            MappingProviderControlHandle { inner: this.inner.clone() };
                        Ok(MappingProviderRequest::OpenSession {
                            session: req.session,

                            responder: MappingProviderOpenSessionResponder {
                                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(MappingProviderRequest::_UnknownMethod {
                            ordinal: header.ordinal,
                            control_handle: MappingProviderControlHandle {
                                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(MappingProviderRequest::_UnknownMethod {
                            ordinal: header.ordinal,
                            control_handle: MappingProviderControlHandle {
                                inner: this.inner.clone(),
                            },
                            method_type: fidl::MethodType::TwoWay,
                        })
                    }
                    _ => Err(fidl::Error::UnknownOrdinal {
                        ordinal: header.ordinal,
                        protocol_name:
                            <MappingProviderMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                    }),
                }))
            },
        )
    }
}

#[derive(Debug)]
pub enum MappingProviderRequest {
    /// Establishes a new mapping session, returning the mapping VMO.
    OpenSession {
        session: fidl::endpoints::ServerEnd<MappingSessionMarker>,
        responder: MappingProviderOpenSessionResponder,
    },
    /// 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: MappingProviderControlHandle,
        method_type: fidl::MethodType,
    },
}

impl MappingProviderRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_open_session(
        self,
    ) -> Option<(
        fidl::endpoints::ServerEnd<MappingSessionMarker>,
        MappingProviderOpenSessionResponder,
    )> {
        if let MappingProviderRequest::OpenSession { session, responder } = self {
            Some((session, responder))
        } else {
            None
        }
    }

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

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

impl MappingProviderControlHandle {
    pub fn shutdown_with_epitaph(&self, status: impl Into<fidl::Epitaph>) {
        self.inner.shutdown_with_epitaph(status.into())
    }
}

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

    fn shutdown_with_epitaph(&self, status: fidl::Epitaph) {
        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 MappingProviderControlHandle {}

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

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

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

    fn send_raw(&self, mut result: Result<fidl::Vmo, i32>) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::FlexibleResultType<
            MappingProviderOpenSessionResponse,
            i32,
        >>(
            fidl::encoding::FlexibleResult::new(result.map(|mapping_vmo| (mapping_vmo,))),
            self.tx_id,
            0x392ee248d504919a,
            fidl::encoding::DynamicFlags::FLEXIBLE,
        )
    }
}

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

impl fidl::endpoints::ProtocolMarker for MappingSessionMarker {
    type Proxy = MappingSessionProxy;
    type RequestStream = MappingSessionRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = MappingSessionSynchronousProxy;

    const DEBUG_NAME: &'static str = "(anonymous) MappingSession";
}
pub type MappingSessionOpenResult = Result<u64, i32>;
pub type MappingSessionCloseResult = Result<(), i32>;

pub trait MappingSessionProxyInterface: Send + Sync {
    type OpenResponseFut: std::future::Future<Output = Result<MappingSessionOpenResult, fidl::Error>>
        + Send;
    fn r#open(&self, key: u64, identifier: &[u8]) -> Self::OpenResponseFut;
    type CloseResponseFut: std::future::Future<Output = Result<MappingSessionCloseResult, fidl::Error>>
        + Send;
    fn r#close(&self, key: u64) -> Self::CloseResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct MappingSessionSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for MappingSessionSynchronousProxy {
    type Proxy = MappingSessionProxy;
    type Protocol = MappingSessionMarker;

    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 MappingSessionSynchronousProxy {
    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<MappingSessionEvent, fidl::Error> {
        MappingSessionEvent::decode(self.client.wait_for_event::<MappingSessionMarker>(deadline)?)
    }

    /// Registers a node's extents in the mapping session, returning its uncompressed size in bytes.
    ///
    /// The filesystem resolves the `identifier` to locate the node on disk and transmits its
    /// extent mappings to the block driver associated with `key`.
    pub fn r#open(
        &self,
        mut key: u64,
        mut identifier: &[u8],
        ___deadline: zx::MonotonicInstant,
    ) -> Result<MappingSessionOpenResult, fidl::Error> {
        let _response = self.client.send_query::<
            MappingSessionOpenRequest,
            fidl::encoding::FlexibleResultType<MappingSessionOpenResponse, i32>,
            MappingSessionMarker,
        >(
            (key, identifier,),
            0x1b3f5b2b1e68472b,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            ___deadline,
        )?
        .into_result::<MappingSessionMarker>("open")?;
        Ok(_response.map(|x| x.size))
    }

    /// Unregisters a node's extents from the session by its session-unique key.
    pub fn r#close(
        &self,
        mut key: u64,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<MappingSessionCloseResult, fidl::Error> {
        let _response = self.client.send_query::<
            MappingSessionCloseRequest,
            fidl::encoding::FlexibleResultType<fidl::encoding::EmptyStruct, i32>,
            MappingSessionMarker,
        >(
            (key,),
            0x34708ae0c1044d20,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            ___deadline,
        )?
        .into_result::<MappingSessionMarker>("close")?;
        Ok(_response.map(|x| x))
    }
}

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

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

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

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

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

impl fidl::endpoints::Proxy for MappingSessionProxy {
    type Protocol = MappingSessionMarker;

    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 MappingSessionProxy {
    /// Create a new Proxy for fuchsia.storage.mapping/MappingSession.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <MappingSessionMarker 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) -> MappingSessionEventStream {
        MappingSessionEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Registers a node's extents in the mapping session, returning its uncompressed size in bytes.
    ///
    /// The filesystem resolves the `identifier` to locate the node on disk and transmits its
    /// extent mappings to the block driver associated with `key`.
    pub fn r#open(
        &self,
        mut key: u64,
        mut identifier: &[u8],
    ) -> fidl::client::QueryResponseFut<
        MappingSessionOpenResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        MappingSessionProxyInterface::r#open(self, key, identifier)
    }

    /// Unregisters a node's extents from the session by its session-unique key.
    pub fn r#close(
        &self,
        mut key: u64,
    ) -> fidl::client::QueryResponseFut<
        MappingSessionCloseResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        MappingSessionProxyInterface::r#close(self, key)
    }
}

impl MappingSessionProxyInterface for MappingSessionProxy {
    type OpenResponseFut = fidl::client::QueryResponseFut<
        MappingSessionOpenResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#open(&self, mut key: u64, mut identifier: &[u8]) -> Self::OpenResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<MappingSessionOpenResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::FlexibleResultType<MappingSessionOpenResponse, i32>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x1b3f5b2b1e68472b,
            >(_buf?)?
            .into_result::<MappingSessionMarker>("open")?;
            Ok(_response.map(|x| x.size))
        }
        self.client.send_query_and_decode::<MappingSessionOpenRequest, MappingSessionOpenResult>(
            (key, identifier),
            0x1b3f5b2b1e68472b,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            _decode,
        )
    }

    type CloseResponseFut = fidl::client::QueryResponseFut<
        MappingSessionCloseResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#close(&self, mut key: u64) -> Self::CloseResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<MappingSessionCloseResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::FlexibleResultType<fidl::encoding::EmptyStruct, i32>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x34708ae0c1044d20,
            >(_buf?)?
            .into_result::<MappingSessionMarker>("close")?;
            Ok(_response.map(|x| x))
        }
        self.client.send_query_and_decode::<MappingSessionCloseRequest, MappingSessionCloseResult>(
            (key,),
            0x34708ae0c1044d20,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            _decode,
        )
    }
}

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

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

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

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

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

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

/// A Stream of incoming requests for fuchsia.storage.mapping/MappingSession.
pub struct MappingSessionRequestStream {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
    is_terminated: bool,
}

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

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

impl fidl::endpoints::RequestStream for MappingSessionRequestStream {
    type Protocol = MappingSessionMarker;
    type ControlHandle = MappingSessionControlHandle;

    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 {
        MappingSessionControlHandle { 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 MappingSessionRequestStream {
    type Item = Result<MappingSessionRequest, 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 MappingSessionRequestStream 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 {
                    0x1b3f5b2b1e68472b => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            MappingSessionOpenRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<MappingSessionOpenRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle =
                            MappingSessionControlHandle { inner: this.inner.clone() };
                        Ok(MappingSessionRequest::Open {
                            key: req.key,
                            identifier: req.identifier,

                            responder: MappingSessionOpenResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    0x34708ae0c1044d20 => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            MappingSessionCloseRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<MappingSessionCloseRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle =
                            MappingSessionControlHandle { inner: this.inner.clone() };
                        Ok(MappingSessionRequest::Close {
                            key: req.key,

                            responder: MappingSessionCloseResponder {
                                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(MappingSessionRequest::_UnknownMethod {
                            ordinal: header.ordinal,
                            control_handle: MappingSessionControlHandle {
                                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(MappingSessionRequest::_UnknownMethod {
                            ordinal: header.ordinal,
                            control_handle: MappingSessionControlHandle {
                                inner: this.inner.clone(),
                            },
                            method_type: fidl::MethodType::TwoWay,
                        })
                    }
                    _ => Err(fidl::Error::UnknownOrdinal {
                        ordinal: header.ordinal,
                        protocol_name:
                            <MappingSessionMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                    }),
                }))
            },
        )
    }
}

#[derive(Debug)]
pub enum MappingSessionRequest {
    /// Registers a node's extents in the mapping session, returning its uncompressed size in bytes.
    ///
    /// The filesystem resolves the `identifier` to locate the node on disk and transmits its
    /// extent mappings to the block driver associated with `key`.
    Open { key: u64, identifier: Vec<u8>, responder: MappingSessionOpenResponder },
    /// Unregisters a node's extents from the session by its session-unique key.
    Close { key: u64, responder: MappingSessionCloseResponder },
    /// 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: MappingSessionControlHandle,
        method_type: fidl::MethodType,
    },
}

impl MappingSessionRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_open(self) -> Option<(u64, Vec<u8>, MappingSessionOpenResponder)> {
        if let MappingSessionRequest::Open { key, identifier, responder } = self {
            Some((key, identifier, responder))
        } else {
            None
        }
    }

    #[allow(irrefutable_let_patterns)]
    pub fn into_close(self) -> Option<(u64, MappingSessionCloseResponder)> {
        if let MappingSessionRequest::Close { key, responder } = self {
            Some((key, responder))
        } else {
            None
        }
    }

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

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

impl MappingSessionControlHandle {
    pub fn shutdown_with_epitaph(&self, status: impl Into<fidl::Epitaph>) {
        self.inner.shutdown_with_epitaph(status.into())
    }
}

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

    fn shutdown_with_epitaph(&self, status: fidl::Epitaph) {
        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 MappingSessionControlHandle {}

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

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

    fn control_handle(&self) -> &MappingSessionControlHandle {
        &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 MappingSessionOpenResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut result: Result<u64, 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<u64, i32>) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut result: Result<u64, i32>) -> Result<(), fidl::Error> {
        self.control_handle
            .inner
            .send::<fidl::encoding::FlexibleResultType<MappingSessionOpenResponse, i32>>(
                fidl::encoding::FlexibleResult::new(result.map(|size| (size,))),
                self.tx_id,
                0x1b3f5b2b1e68472b,
                fidl::encoding::DynamicFlags::FLEXIBLE,
            )
    }
}

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

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

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

    fn send_raw(&self, mut result: Result<(), i32>) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::FlexibleResultType<
            fidl::encoding::EmptyStruct,
            i32,
        >>(
            fidl::encoding::FlexibleResult::new(result),
            self.tx_id,
            0x34708ae0c1044d20,
            fidl::encoding::DynamicFlags::FLEXIBLE,
        )
    }
}

mod internal {
    use super::*;

    impl fidl::encoding::ResourceTypeMarker for MappingProviderOpenSessionRequest {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

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

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            4
        }
    }

    unsafe impl
        fidl::encoding::Encode<
            MappingProviderOpenSessionRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut MappingProviderOpenSessionRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<MappingProviderOpenSessionRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<MappingProviderOpenSessionRequest, fidl::encoding::DefaultFuchsiaResourceDialect>::encode(
                (
                    <fidl::encoding::Endpoint<fidl::endpoints::ServerEnd<MappingSessionMarker>> as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.session),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::Endpoint<fidl::endpoints::ServerEnd<MappingSessionMarker>>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    >
        fidl::encoding::Encode<
            MappingProviderOpenSessionRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<MappingProviderOpenSessionRequest>(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, fidl::encoding::DefaultFuchsiaResourceDialect>
        for MappingProviderOpenSessionRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                session: fidl::new_empty!(
                    fidl::encoding::Endpoint<fidl::endpoints::ServerEnd<MappingSessionMarker>>,
                    fidl::encoding::DefaultFuchsiaResourceDialect
                ),
            }
        }

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

    impl fidl::encoding::ResourceTypeMarker for MappingProviderOpenSessionResponse {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

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

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            4
        }
    }

    unsafe impl
        fidl::encoding::Encode<
            MappingProviderOpenSessionResponse,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut MappingProviderOpenSessionResponse
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<MappingProviderOpenSessionResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<
                MappingProviderOpenSessionResponse,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >::encode(
                (<fidl::encoding::HandleType<
                    fidl::Vmo,
                    { fidl::ObjectType::VMO.into_raw() },
                    2147483648,
                > as fidl::encoding::ResourceTypeMarker>::take_or_borrow(
                    &mut self.mapping_vmo
                ),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::HandleType<
                    fidl::Vmo,
                    { fidl::ObjectType::VMO.into_raw() },
                    2147483648,
                >,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    >
        fidl::encoding::Encode<
            MappingProviderOpenSessionResponse,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<MappingProviderOpenSessionResponse>(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, fidl::encoding::DefaultFuchsiaResourceDialect>
        for MappingProviderOpenSessionResponse
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                mapping_vmo: fidl::new_empty!(fidl::encoding::HandleType<fidl::Vmo, { fidl::ObjectType::VMO.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(fidl::encoding::HandleType<fidl::Vmo, { fidl::ObjectType::VMO.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.mapping_vmo, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }
}