fidl_examples_canvas_clientrequesteddraw/

fidl_examples_canvas_clientrequesteddraw.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_examples_canvas_clientrequesteddraw__common::*;
use futures::future::{self, MaybeDone, TryFutureExt};
use zx_status;

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

impl fidl::endpoints::ProtocolMarker for InstanceMarker {
    type Proxy = InstanceProxy;
    type RequestStream = InstanceRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = InstanceSynchronousProxy;

    const DEBUG_NAME: &'static str = "examples.canvas.clientrequesteddraw.Instance";
}
impl fidl::endpoints::DiscoverableProtocolMarker for InstanceMarker {}

pub trait InstanceProxyInterface: Send + Sync {
    fn r#add_lines(&self, lines: &[[Point; 2]]) -> Result<(), fidl::Error>;
    type ReadyResponseFut: std::future::Future<Output = Result<(), fidl::Error>> + Send;
    fn r#ready(&self) -> Self::ReadyResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct InstanceSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for InstanceSynchronousProxy {
    type Proxy = InstanceProxy;
    type Protocol = InstanceMarker;

    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 InstanceSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        let protocol_name = <InstanceMarker 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::MonotonicInstant,
    ) -> Result<InstanceEvent, fidl::Error> {
        InstanceEvent::decode(self.client.wait_for_event(deadline)?)
    }

    /// Add multiple lines to the canvas. We are able to reduce protocol chatter and the number of
    /// requests needed by batching instead of calling the simpler `AddLine(...)` one line at a
    /// time.
    pub fn r#add_lines(&self, mut lines: &[[Point; 2]]) -> Result<(), fidl::Error> {
        self.client.send::<InstanceAddLinesRequest>(
            (lines,),
            0x5a82f0b30f970bd6,
            fidl::encoding::DynamicFlags::FLEXIBLE,
        )
    }

    /// Rather than the server randomly performing draws, or trying to guess when to do so, the
    /// client must explicitly ask for them. This creates a bit of extra chatter with the additional
    /// method invocation, but allows much greater client-side control of when the canvas is "ready"
    /// for a view update, thereby eliminating unnecessary draws.
    ///
    /// This method also has the benefit of "throttling" the `-> OnDrawn(...)` event - rather than
    /// allowing a potentially unlimited flood of `-> OnDrawn(...)` calls, we now have the runtime
    /// enforced semantic that each `-> OnDrawn(...)` call must follow a unique `Ready() -> ()` call
    /// from the client. An unprompted `-> OnDrawn(...)` is invalid, and should cause the channel to
    /// immediately close.
    pub fn r#ready(&self, ___deadline: zx::MonotonicInstant) -> Result<(), fidl::Error> {
        let _response = self.client.send_query::<
            fidl::encoding::EmptyPayload,
            fidl::encoding::FlexibleType<fidl::encoding::EmptyStruct>,
        >(
            (),
            0x3458d7a668873150,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            ___deadline,
        )?
        .into_result::<InstanceMarker>("ready")?;
        Ok(_response)
    }
}

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

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

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

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

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

impl fidl::endpoints::Proxy for InstanceProxy {
    type Protocol = InstanceMarker;

    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 InstanceProxy {
    /// Create a new Proxy for examples.canvas.clientrequesteddraw/Instance.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <InstanceMarker 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) -> InstanceEventStream {
        InstanceEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Add multiple lines to the canvas. We are able to reduce protocol chatter and the number of
    /// requests needed by batching instead of calling the simpler `AddLine(...)` one line at a
    /// time.
    pub fn r#add_lines(&self, mut lines: &[[Point; 2]]) -> Result<(), fidl::Error> {
        InstanceProxyInterface::r#add_lines(self, lines)
    }

    /// Rather than the server randomly performing draws, or trying to guess when to do so, the
    /// client must explicitly ask for them. This creates a bit of extra chatter with the additional
    /// method invocation, but allows much greater client-side control of when the canvas is "ready"
    /// for a view update, thereby eliminating unnecessary draws.
    ///
    /// This method also has the benefit of "throttling" the `-> OnDrawn(...)` event - rather than
    /// allowing a potentially unlimited flood of `-> OnDrawn(...)` calls, we now have the runtime
    /// enforced semantic that each `-> OnDrawn(...)` call must follow a unique `Ready() -> ()` call
    /// from the client. An unprompted `-> OnDrawn(...)` is invalid, and should cause the channel to
    /// immediately close.
    pub fn r#ready(
        &self,
    ) -> fidl::client::QueryResponseFut<(), fidl::encoding::DefaultFuchsiaResourceDialect> {
        InstanceProxyInterface::r#ready(self)
    }
}

impl InstanceProxyInterface for InstanceProxy {
    fn r#add_lines(&self, mut lines: &[[Point; 2]]) -> Result<(), fidl::Error> {
        self.client.send::<InstanceAddLinesRequest>(
            (lines,),
            0x5a82f0b30f970bd6,
            fidl::encoding::DynamicFlags::FLEXIBLE,
        )
    }

    type ReadyResponseFut =
        fidl::client::QueryResponseFut<(), fidl::encoding::DefaultFuchsiaResourceDialect>;
    fn r#ready(&self) -> Self::ReadyResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<(), fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::FlexibleType<fidl::encoding::EmptyStruct>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x3458d7a668873150,
            >(_buf?)?
            .into_result::<InstanceMarker>("ready")?;
            Ok(_response)
        }
        self.client.send_query_and_decode::<fidl::encoding::EmptyPayload, ()>(
            (),
            0x3458d7a668873150,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            _decode,
        )
    }
}

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

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

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

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

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

impl InstanceEvent {
    #[allow(irrefutable_let_patterns)]
    pub fn into_on_drawn(self) -> Option<(Point, Point)> {
        if let InstanceEvent::OnDrawn { top_left, bottom_right } = self {
            Some((top_left, bottom_right))
        } else {
            None
        }
    }

    /// Decodes a message buffer as a [`InstanceEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<InstanceEvent, 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 {
            0x25e6d8494623419a => {
                let mut out =
                    fidl::new_empty!(BoundingBox, fidl::encoding::DefaultFuchsiaResourceDialect);
                fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<BoundingBox>(&tx_header, _body_bytes, _handles, &mut out)?;
                Ok((InstanceEvent::OnDrawn {
                    top_left: out.top_left,
                    bottom_right: out.bottom_right,
                }))
            }
            _ if tx_header.dynamic_flags().contains(fidl::encoding::DynamicFlags::FLEXIBLE) => {
                Ok(InstanceEvent::_UnknownEvent { ordinal: tx_header.ordinal })
            }
            _ => Err(fidl::Error::UnknownOrdinal {
                ordinal: tx_header.ordinal,
                protocol_name: <InstanceMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

/// A Stream of incoming requests for examples.canvas.clientrequesteddraw/Instance.
pub struct InstanceRequestStream {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
    is_terminated: bool,
}

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

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

impl fidl::endpoints::RequestStream for InstanceRequestStream {
    type Protocol = InstanceMarker;
    type ControlHandle = InstanceControlHandle;

    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 {
        InstanceControlHandle { 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 InstanceRequestStream {
    type Item = Result<InstanceRequest, 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 InstanceRequestStream 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 {
                    0x5a82f0b30f970bd6 => {
                        header.validate_request_tx_id(fidl::MethodType::OneWay)?;
                        let mut req = fidl::new_empty!(
                            InstanceAddLinesRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<InstanceAddLinesRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = InstanceControlHandle { inner: this.inner.clone() };
                        Ok(InstanceRequest::AddLines { lines: req.lines, control_handle })
                    }
                    0x3458d7a668873150 => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            fidl::encoding::EmptyPayload,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<fidl::encoding::EmptyPayload>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = InstanceControlHandle { inner: this.inner.clone() };
                        Ok(InstanceRequest::Ready {
                            responder: InstanceReadyResponder {
                                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(InstanceRequest::_UnknownMethod {
                            ordinal: header.ordinal,
                            control_handle: InstanceControlHandle { 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(InstanceRequest::_UnknownMethod {
                            ordinal: header.ordinal,
                            control_handle: InstanceControlHandle { inner: this.inner.clone() },
                            method_type: fidl::MethodType::TwoWay,
                        })
                    }
                    _ => Err(fidl::Error::UnknownOrdinal {
                        ordinal: header.ordinal,
                        protocol_name:
                            <InstanceMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                    }),
                }))
            },
        )
    }
}

/// Manages a single instance of a canvas. Each session of this protocol is responsible for a new
/// canvas.
#[derive(Debug)]
pub enum InstanceRequest {
    /// Add multiple lines to the canvas. We are able to reduce protocol chatter and the number of
    /// requests needed by batching instead of calling the simpler `AddLine(...)` one line at a
    /// time.
    AddLines { lines: Vec<[Point; 2]>, control_handle: InstanceControlHandle },
    /// Rather than the server randomly performing draws, or trying to guess when to do so, the
    /// client must explicitly ask for them. This creates a bit of extra chatter with the additional
    /// method invocation, but allows much greater client-side control of when the canvas is "ready"
    /// for a view update, thereby eliminating unnecessary draws.
    ///
    /// This method also has the benefit of "throttling" the `-> OnDrawn(...)` event - rather than
    /// allowing a potentially unlimited flood of `-> OnDrawn(...)` calls, we now have the runtime
    /// enforced semantic that each `-> OnDrawn(...)` call must follow a unique `Ready() -> ()` call
    /// from the client. An unprompted `-> OnDrawn(...)` is invalid, and should cause the channel to
    /// immediately close.
    Ready { responder: InstanceReadyResponder },
    /// 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: InstanceControlHandle,
        method_type: fidl::MethodType,
    },
}

impl InstanceRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_add_lines(self) -> Option<(Vec<[Point; 2]>, InstanceControlHandle)> {
        if let InstanceRequest::AddLines { lines, control_handle } = self {
            Some((lines, control_handle))
        } else {
            None
        }
    }

    #[allow(irrefutable_let_patterns)]
    pub fn into_ready(self) -> Option<(InstanceReadyResponder)> {
        if let InstanceRequest::Ready { responder } = self {
            Some((responder))
        } else {
            None
        }
    }

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

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

impl fidl::endpoints::ControlHandle for InstanceControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }
    fn shutdown_with_epitaph(&self, status: zx_status::Status) {
        self.inner.shutdown_with_epitaph(status)
    }

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

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

impl InstanceControlHandle {
    pub fn send_on_drawn(
        &self,
        mut top_left: &Point,
        mut bottom_right: &Point,
    ) -> Result<(), fidl::Error> {
        self.inner.send::<BoundingBox>(
            (top_left, bottom_right),
            0,
            0x25e6d8494623419a,
            fidl::encoding::DynamicFlags::FLEXIBLE,
        )
    }
}

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

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

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

    fn send_raw(&self) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::FlexibleType<fidl::encoding::EmptyStruct>>(
            fidl::encoding::Flexible::new(()),
            self.tx_id,
            0x3458d7a668873150,
            fidl::encoding::DynamicFlags::FLEXIBLE,
        )
    }
}

mod internal {
    use super::*;
}