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219 changes: 219 additions & 0 deletions
219
crates/libs/windows/src/extensions/Foundation/AsyncReady.rs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,219 @@ | ||
| use super::Async::Async; | ||
| use crate::{core::*, Foundation::*}; | ||
| use std::sync::atomic::{AtomicBool, Ordering}; | ||
|
|
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| struct ReadyState<T: Async> { | ||
| set_completed: AtomicBool, | ||
| result: Result<T::Output>, | ||
| } | ||
|
|
||
| impl<T: Async> ReadyState<T> { | ||
| fn new(result: Result<T::Output>) -> Self { | ||
| Self { set_completed: AtomicBool::new(false), result } | ||
| } | ||
|
|
||
| fn status(&self) -> AsyncStatus { | ||
| if self.result.is_ok() { | ||
| AsyncStatus::Completed | ||
| } else { | ||
| AsyncStatus::Error | ||
| } | ||
| } | ||
|
|
||
| // The "Ready" implementations don't need to store the handler since the handler is invoked immediately | ||
| // but still need to confirm that `SetCompleted` is called at most once. | ||
| fn invoke_completed(&self, sender: &T, handler: Option<&T::CompletedHandler>) -> Result<()> { | ||
| if self.set_completed.swap(true, Ordering::SeqCst) == false { | ||
| if let Some(handler) = handler { | ||
| sender.invoke_completed(handler, self.status()); | ||
| } | ||
| Ok(()) | ||
| } else { | ||
| Err(Error::from_hresult(HRESULT(0x80000018u32 as i32))) // E_ILLEGAL_DELEGATE_ASSIGNMENT | ||
| } | ||
| } | ||
|
|
||
| // The `From` implementation is not used here since we don't want to transfer any error object to the calling thread. | ||
| // That happens when `GetResults` is called. | ||
| fn error_code(&self) -> Result<HRESULT> { | ||
| Ok(match &self.result { | ||
| Ok(_) => HRESULT(0), | ||
| Err(error) => error.code(), | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| #[implement(IAsyncAction, IAsyncInfo)] | ||
| struct ReadyAction(ReadyState<IAsyncAction>); | ||
|
|
||
| #[implement(IAsyncOperation<T>, IAsyncInfo)] | ||
| struct ReadyOperation<T>(ReadyState<IAsyncOperation<T>>) | ||
| where | ||
| T: RuntimeType + 'static; | ||
|
|
||
| #[implement(IAsyncActionWithProgress<P>, IAsyncInfo)] | ||
| struct ReadyActionWithProgress<P>(ReadyState<IAsyncActionWithProgress<P>>) | ||
| where | ||
| P: RuntimeType + 'static; | ||
|
|
||
| #[implement(IAsyncOperationWithProgress<T, P>, IAsyncInfo)] | ||
| struct ReadyOperationWithProgress<T, P>(ReadyState<IAsyncOperationWithProgress<T, P>>) | ||
| where | ||
| T: RuntimeType + 'static, | ||
| P: RuntimeType + 'static; | ||
|
|
||
| impl IAsyncInfo_Impl for ReadyAction_Impl { | ||
| fn Id(&self) -> Result<u32> { | ||
| Ok(1) | ||
| } | ||
| fn Status(&self) -> Result<AsyncStatus> { | ||
| Ok(self.0.status()) | ||
| } | ||
| fn ErrorCode(&self) -> Result<HRESULT> { | ||
| self.0.error_code() | ||
| } | ||
| fn Cancel(&self) -> Result<()> { | ||
| Ok(()) | ||
| } | ||
| fn Close(&self) -> Result<()> { | ||
| Ok(()) | ||
| } | ||
| } | ||
|
|
||
| impl<T: RuntimeType> IAsyncInfo_Impl for ReadyOperation_Impl<T> { | ||
| fn Id(&self) -> Result<u32> { | ||
| Ok(1) | ||
| } | ||
| fn Status(&self) -> Result<AsyncStatus> { | ||
| Ok(self.0.status()) | ||
| } | ||
| fn ErrorCode(&self) -> Result<HRESULT> { | ||
| self.0.error_code() | ||
| } | ||
| fn Cancel(&self) -> Result<()> { | ||
| Ok(()) | ||
| } | ||
| fn Close(&self) -> Result<()> { | ||
| Ok(()) | ||
| } | ||
| } | ||
|
|
||
| impl<P: RuntimeType> IAsyncInfo_Impl for ReadyActionWithProgress_Impl<P> { | ||
| fn Id(&self) -> Result<u32> { | ||
| Ok(1) | ||
| } | ||
| fn Status(&self) -> Result<AsyncStatus> { | ||
| Ok(self.0.status()) | ||
| } | ||
| fn ErrorCode(&self) -> Result<HRESULT> { | ||
| self.0.error_code() | ||
| } | ||
| fn Cancel(&self) -> Result<()> { | ||
| Ok(()) | ||
| } | ||
| fn Close(&self) -> Result<()> { | ||
| Ok(()) | ||
| } | ||
| } | ||
|
|
||
| impl<T: RuntimeType, P: RuntimeType> IAsyncInfo_Impl for ReadyOperationWithProgress_Impl<T, P> { | ||
| fn Id(&self) -> Result<u32> { | ||
| Ok(1) | ||
| } | ||
| fn Status(&self) -> Result<AsyncStatus> { | ||
| Ok(self.0.status()) | ||
| } | ||
| fn ErrorCode(&self) -> Result<HRESULT> { | ||
| self.0.error_code() | ||
| } | ||
| fn Cancel(&self) -> Result<()> { | ||
| Ok(()) | ||
| } | ||
| fn Close(&self) -> Result<()> { | ||
| Ok(()) | ||
| } | ||
| } | ||
|
|
||
| impl IAsyncAction_Impl for ReadyAction_Impl { | ||
| fn SetCompleted(&self, handler: Option<&AsyncActionCompletedHandler>) -> Result<()> { | ||
| self.0.invoke_completed(&self.as_interface(), handler) | ||
| } | ||
| fn Completed(&self) -> Result<AsyncActionCompletedHandler> { | ||
| Err(Error::empty()) | ||
| } | ||
| fn GetResults(&self) -> Result<()> { | ||
| self.0.result.clone() | ||
| } | ||
| } | ||
|
|
||
| impl<T: RuntimeType> IAsyncOperation_Impl<T> for ReadyOperation_Impl<T> { | ||
| fn SetCompleted(&self, handler: Option<&AsyncOperationCompletedHandler<T>>) -> Result<()> { | ||
| self.0.invoke_completed(&self.as_interface(), handler) | ||
| } | ||
| fn Completed(&self) -> Result<AsyncOperationCompletedHandler<T>> { | ||
| Err(Error::empty()) | ||
| } | ||
| fn GetResults(&self) -> Result<T> { | ||
| self.0.result.clone() | ||
| } | ||
| } | ||
|
|
||
| impl<P: RuntimeType> IAsyncActionWithProgress_Impl<P> for ReadyActionWithProgress_Impl<P> { | ||
| fn SetCompleted(&self, handler: Option<&AsyncActionWithProgressCompletedHandler<P>>) -> Result<()> { | ||
| self.0.invoke_completed(&self.as_interface(), handler) | ||
| } | ||
| fn Completed(&self) -> Result<AsyncActionWithProgressCompletedHandler<P>> { | ||
| Err(Error::empty()) | ||
| } | ||
| fn GetResults(&self) -> Result<()> { | ||
| self.0.result.clone() | ||
| } | ||
| fn SetProgress(&self, _: Option<&AsyncActionProgressHandler<P>>) -> Result<()> { | ||
| Ok(()) | ||
| } | ||
| fn Progress(&self) -> Result<AsyncActionProgressHandler<P>> { | ||
| Err(Error::empty()) | ||
| } | ||
| } | ||
|
|
||
| impl<T: RuntimeType, P: RuntimeType> IAsyncOperationWithProgress_Impl<T, P> for ReadyOperationWithProgress_Impl<T, P> { | ||
| fn SetCompleted(&self, handler: Option<&AsyncOperationWithProgressCompletedHandler<T, P>>) -> Result<()> { | ||
| self.0.invoke_completed(&self.as_interface(), handler) | ||
| } | ||
| fn Completed(&self) -> Result<AsyncOperationWithProgressCompletedHandler<T, P>> { | ||
| Err(Error::empty()) | ||
| } | ||
| fn GetResults(&self) -> Result<T> { | ||
| self.0.result.clone() | ||
| } | ||
| fn SetProgress(&self, _: Option<&AsyncOperationProgressHandler<T, P>>) -> Result<()> { | ||
| Ok(()) | ||
| } | ||
| fn Progress(&self) -> Result<AsyncOperationProgressHandler<T, P>> { | ||
| Err(Error::empty()) | ||
| } | ||
| } | ||
|
|
||
| impl IAsyncAction { | ||
| pub fn ready(result: Result<()>) -> Self { | ||
| ReadyAction(ReadyState::new(result)).into() | ||
| } | ||
| } | ||
|
|
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| impl<T: RuntimeType> IAsyncOperation<T> { | ||
| pub fn ready(result: Result<T>) -> Self { | ||
| ReadyOperation(ReadyState::new(result)).into() | ||
| } | ||
| } | ||
|
|
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| impl<P: RuntimeType> IAsyncActionWithProgress<P> { | ||
| pub fn ready(result: Result<()>) -> Self { | ||
| ReadyActionWithProgress(ReadyState::new(result)).into() | ||
| } | ||
| } | ||
|
|
||
| impl<T: RuntimeType, P: RuntimeType> IAsyncOperationWithProgress<T, P> { | ||
| pub fn ready(result: Result<T>) -> Self { | ||
| ReadyOperationWithProgress(ReadyState::new(result)).into() | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| [package] | ||
| name = "test_futures_impl" | ||
| version = "0.0.0" | ||
| edition = "2021" | ||
| publish = false | ||
|
|
||
| [lib] | ||
| doc = false | ||
| doctest = false | ||
|
|
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| [dependencies.windows] | ||
| path = "../../libs/windows" | ||
| features = [ | ||
| "implement", | ||
| "Foundation", | ||
| "Win32_Foundation", | ||
| ] |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
|
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