fidl_examples_canvas_addlinemetered/
fidl_examples_canvas_addlinemetered.rs

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1// WARNING: This file is machine generated by fidlgen.
2
3#![warn(clippy::all)]
4#![allow(unused_parens, unused_mut, unused_imports, nonstandard_style)]
5
6use bitflags::bitflags;
7use fidl::client::QueryResponseFut;
8use fidl::encoding::{MessageBufFor, ProxyChannelBox, ResourceDialect};
9use fidl::endpoints::{ControlHandle as _, Responder as _};
10pub use fidl_examples_canvas_addlinemetered_common::*;
11use futures::future::{self, MaybeDone, TryFutureExt};
12use zx_status;
13
14#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
15pub struct InstanceMarker;
16
17impl fidl::endpoints::ProtocolMarker for InstanceMarker {
18    type Proxy = InstanceProxy;
19    type RequestStream = InstanceRequestStream;
20    #[cfg(target_os = "fuchsia")]
21    type SynchronousProxy = InstanceSynchronousProxy;
22
23    const DEBUG_NAME: &'static str = "examples.canvas.addlinemetered.Instance";
24}
25impl fidl::endpoints::DiscoverableProtocolMarker for InstanceMarker {}
26
27pub trait InstanceProxyInterface: Send + Sync {
28    type AddLineResponseFut: std::future::Future<Output = Result<(), fidl::Error>> + Send;
29    fn r#add_line(&self, line: &[Point; 2]) -> Self::AddLineResponseFut;
30}
31#[derive(Debug)]
32#[cfg(target_os = "fuchsia")]
33pub struct InstanceSynchronousProxy {
34    client: fidl::client::sync::Client,
35}
36
37#[cfg(target_os = "fuchsia")]
38impl fidl::endpoints::SynchronousProxy for InstanceSynchronousProxy {
39    type Proxy = InstanceProxy;
40    type Protocol = InstanceMarker;
41
42    fn from_channel(inner: fidl::Channel) -> Self {
43        Self::new(inner)
44    }
45
46    fn into_channel(self) -> fidl::Channel {
47        self.client.into_channel()
48    }
49
50    fn as_channel(&self) -> &fidl::Channel {
51        self.client.as_channel()
52    }
53}
54
55#[cfg(target_os = "fuchsia")]
56impl InstanceSynchronousProxy {
57    pub fn new(channel: fidl::Channel) -> Self {
58        let protocol_name = <InstanceMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
59        Self { client: fidl::client::sync::Client::new(channel, protocol_name) }
60    }
61
62    pub fn into_channel(self) -> fidl::Channel {
63        self.client.into_channel()
64    }
65
66    /// Waits until an event arrives and returns it. It is safe for other
67    /// threads to make concurrent requests while waiting for an event.
68    pub fn wait_for_event(
69        &self,
70        deadline: zx::MonotonicInstant,
71    ) -> Result<InstanceEvent, fidl::Error> {
72        InstanceEvent::decode(self.client.wait_for_event(deadline)?)
73    }
74
75    /// Add a line to the canvas.
76    ///
77    /// This method can be considered an improvement over the one-way case from a flow control
78    /// perspective, as it is now much more difficult for a well-behaved client to "get ahead" of
79    /// the server and overwhelm. This is because the client now waits for each request to be acked
80    /// by the server before proceeding. This change represents a trade-off: we get much greater
81    /// synchronization of message flow between the client and the server, at the cost of worse
82    /// performance at the limit due to the extra wait imposed by each ack.
83    pub fn r#add_line(
84        &self,
85        mut line: &[Point; 2],
86        ___deadline: zx::MonotonicInstant,
87    ) -> Result<(), fidl::Error> {
88        let _response = self.client.send_query::<
89            InstanceAddLineRequest,
90            fidl::encoding::FlexibleType<fidl::encoding::EmptyStruct>,
91        >(
92            (line,),
93            0x4eff6e5348bfc151,
94            fidl::encoding::DynamicFlags::FLEXIBLE,
95            ___deadline,
96        )?
97        .into_result::<InstanceMarker>("add_line")?;
98        Ok(_response)
99    }
100}
101
102#[derive(Debug, Clone)]
103pub struct InstanceProxy {
104    client: fidl::client::Client<fidl::encoding::DefaultFuchsiaResourceDialect>,
105}
106
107impl fidl::endpoints::Proxy for InstanceProxy {
108    type Protocol = InstanceMarker;
109
110    fn from_channel(inner: ::fidl::AsyncChannel) -> Self {
111        Self::new(inner)
112    }
113
114    fn into_channel(self) -> Result<::fidl::AsyncChannel, Self> {
115        self.client.into_channel().map_err(|client| Self { client })
116    }
117
118    fn as_channel(&self) -> &::fidl::AsyncChannel {
119        self.client.as_channel()
120    }
121}
122
123impl InstanceProxy {
124    /// Create a new Proxy for examples.canvas.addlinemetered/Instance.
125    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
126        let protocol_name = <InstanceMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
127        Self { client: fidl::client::Client::new(channel, protocol_name) }
128    }
129
130    /// Get a Stream of events from the remote end of the protocol.
131    ///
132    /// # Panics
133    ///
134    /// Panics if the event stream was already taken.
135    pub fn take_event_stream(&self) -> InstanceEventStream {
136        InstanceEventStream { event_receiver: self.client.take_event_receiver() }
137    }
138
139    /// Add a line to the canvas.
140    ///
141    /// This method can be considered an improvement over the one-way case from a flow control
142    /// perspective, as it is now much more difficult for a well-behaved client to "get ahead" of
143    /// the server and overwhelm. This is because the client now waits for each request to be acked
144    /// by the server before proceeding. This change represents a trade-off: we get much greater
145    /// synchronization of message flow between the client and the server, at the cost of worse
146    /// performance at the limit due to the extra wait imposed by each ack.
147    pub fn r#add_line(
148        &self,
149        mut line: &[Point; 2],
150    ) -> fidl::client::QueryResponseFut<(), fidl::encoding::DefaultFuchsiaResourceDialect> {
151        InstanceProxyInterface::r#add_line(self, line)
152    }
153}
154
155impl InstanceProxyInterface for InstanceProxy {
156    type AddLineResponseFut =
157        fidl::client::QueryResponseFut<(), fidl::encoding::DefaultFuchsiaResourceDialect>;
158    fn r#add_line(&self, mut line: &[Point; 2]) -> Self::AddLineResponseFut {
159        fn _decode(
160            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
161        ) -> Result<(), fidl::Error> {
162            let _response = fidl::client::decode_transaction_body::<
163                fidl::encoding::FlexibleType<fidl::encoding::EmptyStruct>,
164                fidl::encoding::DefaultFuchsiaResourceDialect,
165                0x4eff6e5348bfc151,
166            >(_buf?)?
167            .into_result::<InstanceMarker>("add_line")?;
168            Ok(_response)
169        }
170        self.client.send_query_and_decode::<InstanceAddLineRequest, ()>(
171            (line,),
172            0x4eff6e5348bfc151,
173            fidl::encoding::DynamicFlags::FLEXIBLE,
174            _decode,
175        )
176    }
177}
178
179pub struct InstanceEventStream {
180    event_receiver: fidl::client::EventReceiver<fidl::encoding::DefaultFuchsiaResourceDialect>,
181}
182
183impl std::marker::Unpin for InstanceEventStream {}
184
185impl futures::stream::FusedStream for InstanceEventStream {
186    fn is_terminated(&self) -> bool {
187        self.event_receiver.is_terminated()
188    }
189}
190
191impl futures::Stream for InstanceEventStream {
192    type Item = Result<InstanceEvent, fidl::Error>;
193
194    fn poll_next(
195        mut self: std::pin::Pin<&mut Self>,
196        cx: &mut std::task::Context<'_>,
197    ) -> std::task::Poll<Option<Self::Item>> {
198        match futures::ready!(futures::stream::StreamExt::poll_next_unpin(
199            &mut self.event_receiver,
200            cx
201        )?) {
202            Some(buf) => std::task::Poll::Ready(Some(InstanceEvent::decode(buf))),
203            None => std::task::Poll::Ready(None),
204        }
205    }
206}
207
208#[derive(Debug)]
209pub enum InstanceEvent {
210    OnDrawn {
211        top_left: Point,
212        bottom_right: Point,
213    },
214    #[non_exhaustive]
215    _UnknownEvent {
216        /// Ordinal of the event that was sent.
217        ordinal: u64,
218    },
219}
220
221impl InstanceEvent {
222    #[allow(irrefutable_let_patterns)]
223    pub fn into_on_drawn(self) -> Option<(Point, Point)> {
224        if let InstanceEvent::OnDrawn { top_left, bottom_right } = self {
225            Some((top_left, bottom_right))
226        } else {
227            None
228        }
229    }
230
231    /// Decodes a message buffer as a [`InstanceEvent`].
232    fn decode(
233        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
234    ) -> Result<InstanceEvent, fidl::Error> {
235        let (bytes, _handles) = buf.split_mut();
236        let (tx_header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;
237        debug_assert_eq!(tx_header.tx_id, 0);
238        match tx_header.ordinal {
239            0x2f9e344d1ce361b7 => {
240                let mut out =
241                    fidl::new_empty!(BoundingBox, fidl::encoding::DefaultFuchsiaResourceDialect);
242                fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<BoundingBox>(&tx_header, _body_bytes, _handles, &mut out)?;
243                Ok((InstanceEvent::OnDrawn {
244                    top_left: out.top_left,
245                    bottom_right: out.bottom_right,
246                }))
247            }
248            _ if tx_header.dynamic_flags().contains(fidl::encoding::DynamicFlags::FLEXIBLE) => {
249                Ok(InstanceEvent::_UnknownEvent { ordinal: tx_header.ordinal })
250            }
251            _ => Err(fidl::Error::UnknownOrdinal {
252                ordinal: tx_header.ordinal,
253                protocol_name: <InstanceMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
254            }),
255        }
256    }
257}
258
259/// A Stream of incoming requests for examples.canvas.addlinemetered/Instance.
260pub struct InstanceRequestStream {
261    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
262    is_terminated: bool,
263}
264
265impl std::marker::Unpin for InstanceRequestStream {}
266
267impl futures::stream::FusedStream for InstanceRequestStream {
268    fn is_terminated(&self) -> bool {
269        self.is_terminated
270    }
271}
272
273impl fidl::endpoints::RequestStream for InstanceRequestStream {
274    type Protocol = InstanceMarker;
275    type ControlHandle = InstanceControlHandle;
276
277    fn from_channel(channel: ::fidl::AsyncChannel) -> Self {
278        Self { inner: std::sync::Arc::new(fidl::ServeInner::new(channel)), is_terminated: false }
279    }
280
281    fn control_handle(&self) -> Self::ControlHandle {
282        InstanceControlHandle { inner: self.inner.clone() }
283    }
284
285    fn into_inner(
286        self,
287    ) -> (::std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>, bool)
288    {
289        (self.inner, self.is_terminated)
290    }
291
292    fn from_inner(
293        inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
294        is_terminated: bool,
295    ) -> Self {
296        Self { inner, is_terminated }
297    }
298}
299
300impl futures::Stream for InstanceRequestStream {
301    type Item = Result<InstanceRequest, fidl::Error>;
302
303    fn poll_next(
304        mut self: std::pin::Pin<&mut Self>,
305        cx: &mut std::task::Context<'_>,
306    ) -> std::task::Poll<Option<Self::Item>> {
307        let this = &mut *self;
308        if this.inner.check_shutdown(cx) {
309            this.is_terminated = true;
310            return std::task::Poll::Ready(None);
311        }
312        if this.is_terminated {
313            panic!("polled InstanceRequestStream after completion");
314        }
315        fidl::encoding::with_tls_decode_buf::<_, fidl::encoding::DefaultFuchsiaResourceDialect>(
316            |bytes, handles| {
317                match this.inner.channel().read_etc(cx, bytes, handles) {
318                    std::task::Poll::Ready(Ok(())) => {}
319                    std::task::Poll::Pending => return std::task::Poll::Pending,
320                    std::task::Poll::Ready(Err(zx_status::Status::PEER_CLOSED)) => {
321                        this.is_terminated = true;
322                        return std::task::Poll::Ready(None);
323                    }
324                    std::task::Poll::Ready(Err(e)) => {
325                        return std::task::Poll::Ready(Some(Err(fidl::Error::ServerRequestRead(
326                            e.into(),
327                        ))))
328                    }
329                }
330
331                // A message has been received from the channel
332                let (header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;
333
334                std::task::Poll::Ready(Some(match header.ordinal {
335                    0x4eff6e5348bfc151 => {
336                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
337                        let mut req = fidl::new_empty!(
338                            InstanceAddLineRequest,
339                            fidl::encoding::DefaultFuchsiaResourceDialect
340                        );
341                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<InstanceAddLineRequest>(&header, _body_bytes, handles, &mut req)?;
342                        let control_handle = InstanceControlHandle { inner: this.inner.clone() };
343                        Ok(InstanceRequest::AddLine {
344                            line: req.line,
345
346                            responder: InstanceAddLineResponder {
347                                control_handle: std::mem::ManuallyDrop::new(control_handle),
348                                tx_id: header.tx_id,
349                            },
350                        })
351                    }
352                    _ if header.tx_id == 0
353                        && header
354                            .dynamic_flags()
355                            .contains(fidl::encoding::DynamicFlags::FLEXIBLE) =>
356                    {
357                        Ok(InstanceRequest::_UnknownMethod {
358                            ordinal: header.ordinal,
359                            control_handle: InstanceControlHandle { inner: this.inner.clone() },
360                            method_type: fidl::MethodType::OneWay,
361                        })
362                    }
363                    _ if header
364                        .dynamic_flags()
365                        .contains(fidl::encoding::DynamicFlags::FLEXIBLE) =>
366                    {
367                        this.inner.send_framework_err(
368                            fidl::encoding::FrameworkErr::UnknownMethod,
369                            header.tx_id,
370                            header.ordinal,
371                            header.dynamic_flags(),
372                            (bytes, handles),
373                        )?;
374                        Ok(InstanceRequest::_UnknownMethod {
375                            ordinal: header.ordinal,
376                            control_handle: InstanceControlHandle { inner: this.inner.clone() },
377                            method_type: fidl::MethodType::TwoWay,
378                        })
379                    }
380                    _ => Err(fidl::Error::UnknownOrdinal {
381                        ordinal: header.ordinal,
382                        protocol_name:
383                            <InstanceMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
384                    }),
385                }))
386            },
387        )
388    }
389}
390
391/// Manages a single instance of a canvas. Each session of this protocol is responsible for a new
392/// canvas.
393#[derive(Debug)]
394pub enum InstanceRequest {
395    /// Add a line to the canvas.
396    ///
397    /// This method can be considered an improvement over the one-way case from a flow control
398    /// perspective, as it is now much more difficult for a well-behaved client to "get ahead" of
399    /// the server and overwhelm. This is because the client now waits for each request to be acked
400    /// by the server before proceeding. This change represents a trade-off: we get much greater
401    /// synchronization of message flow between the client and the server, at the cost of worse
402    /// performance at the limit due to the extra wait imposed by each ack.
403    AddLine { line: [Point; 2], responder: InstanceAddLineResponder },
404    /// An interaction was received which does not match any known method.
405    #[non_exhaustive]
406    _UnknownMethod {
407        /// Ordinal of the method that was called.
408        ordinal: u64,
409        control_handle: InstanceControlHandle,
410        method_type: fidl::MethodType,
411    },
412}
413
414impl InstanceRequest {
415    #[allow(irrefutable_let_patterns)]
416    pub fn into_add_line(self) -> Option<([Point; 2], InstanceAddLineResponder)> {
417        if let InstanceRequest::AddLine { line, responder } = self {
418            Some((line, responder))
419        } else {
420            None
421        }
422    }
423
424    /// Name of the method defined in FIDL
425    pub fn method_name(&self) -> &'static str {
426        match *self {
427            InstanceRequest::AddLine { .. } => "add_line",
428            InstanceRequest::_UnknownMethod { method_type: fidl::MethodType::OneWay, .. } => {
429                "unknown one-way method"
430            }
431            InstanceRequest::_UnknownMethod { method_type: fidl::MethodType::TwoWay, .. } => {
432                "unknown two-way method"
433            }
434        }
435    }
436}
437
438#[derive(Debug, Clone)]
439pub struct InstanceControlHandle {
440    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
441}
442
443impl fidl::endpoints::ControlHandle for InstanceControlHandle {
444    fn shutdown(&self) {
445        self.inner.shutdown()
446    }
447    fn shutdown_with_epitaph(&self, status: zx_status::Status) {
448        self.inner.shutdown_with_epitaph(status)
449    }
450
451    fn is_closed(&self) -> bool {
452        self.inner.channel().is_closed()
453    }
454    fn on_closed(&self) -> fidl::OnSignalsRef<'_> {
455        self.inner.channel().on_closed()
456    }
457
458    #[cfg(target_os = "fuchsia")]
459    fn signal_peer(
460        &self,
461        clear_mask: zx::Signals,
462        set_mask: zx::Signals,
463    ) -> Result<(), zx_status::Status> {
464        use fidl::Peered;
465        self.inner.channel().signal_peer(clear_mask, set_mask)
466    }
467}
468
469impl InstanceControlHandle {
470    pub fn send_on_drawn(
471        &self,
472        mut top_left: &Point,
473        mut bottom_right: &Point,
474    ) -> Result<(), fidl::Error> {
475        self.inner.send::<BoundingBox>(
476            (top_left, bottom_right),
477            0,
478            0x2f9e344d1ce361b7,
479            fidl::encoding::DynamicFlags::FLEXIBLE,
480        )
481    }
482}
483
484#[must_use = "FIDL methods require a response to be sent"]
485#[derive(Debug)]
486pub struct InstanceAddLineResponder {
487    control_handle: std::mem::ManuallyDrop<InstanceControlHandle>,
488    tx_id: u32,
489}
490
491/// Set the the channel to be shutdown (see [`InstanceControlHandle::shutdown`])
492/// if the responder is dropped without sending a response, so that the client
493/// doesn't hang. To prevent this behavior, call `drop_without_shutdown`.
494impl std::ops::Drop for InstanceAddLineResponder {
495    fn drop(&mut self) {
496        self.control_handle.shutdown();
497        // Safety: drops once, never accessed again
498        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
499    }
500}
501
502impl fidl::endpoints::Responder for InstanceAddLineResponder {
503    type ControlHandle = InstanceControlHandle;
504
505    fn control_handle(&self) -> &InstanceControlHandle {
506        &self.control_handle
507    }
508
509    fn drop_without_shutdown(mut self) {
510        // Safety: drops once, never accessed again due to mem::forget
511        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
512        // Prevent Drop from running (which would shut down the channel)
513        std::mem::forget(self);
514    }
515}
516
517impl InstanceAddLineResponder {
518    /// Sends a response to the FIDL transaction.
519    ///
520    /// Sets the channel to shutdown if an error occurs.
521    pub fn send(self) -> Result<(), fidl::Error> {
522        let _result = self.send_raw();
523        if _result.is_err() {
524            self.control_handle.shutdown();
525        }
526        self.drop_without_shutdown();
527        _result
528    }
529
530    /// Similar to "send" but does not shutdown the channel if an error occurs.
531    pub fn send_no_shutdown_on_err(self) -> Result<(), fidl::Error> {
532        let _result = self.send_raw();
533        self.drop_without_shutdown();
534        _result
535    }
536
537    fn send_raw(&self) -> Result<(), fidl::Error> {
538        self.control_handle.inner.send::<fidl::encoding::FlexibleType<fidl::encoding::EmptyStruct>>(
539            fidl::encoding::Flexible::new(()),
540            self.tx_id,
541            0x4eff6e5348bfc151,
542            fidl::encoding::DynamicFlags::FLEXIBLE,
543        )
544    }
545}
546
547mod internal {
548    use super::*;
549}
fidl_examples_canvas_addlinemetered/fidl_examples_canvas_addlinemetered.rs

fidl_examples_canvas_addlinemetered/
fidl_examples_canvas_addlinemetered.rs
