MapRet

multipart_write::write

Struct MapRet 

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pub struct MapRet<Wr, F> { /* private fields */ }
Expand description

MultipartWrite for map_ret.

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impl<Wr, F> MapRet<Wr, F>

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pub fn get_ref(&self) -> &Wr

Acquires a reference to the underlying writer.

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pub fn get_mut(&mut self) -> &mut Wr

Acquires a mutable reference to the underlying writer.

It is inadvisable to directly write to the underlying writer.

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pub fn get_pin_mut(self: Pin<&mut Self>) -> Pin<&mut Wr>

Acquires a pinned mutable reference to the underlying writer.

It is inadvisable to directly write to the underlying writer.

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impl<Wr: Debug, F: Debug> Debug for MapRet<Wr, F>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<U, Wr, F, Part> FusedMultipartWrite<Part> for MapRet<Wr, F>
where Wr: FusedMultipartWrite<Part>, F: FnMut(Wr::Ret) -> U,

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fn is_terminated(&self) -> bool

Returns true if the writer should no longer be polled.
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impl<U, Wr, F, Part> MultipartWrite<Part> for MapRet<Wr, F>
where Wr: MultipartWrite<Part>, F: FnMut(Wr::Ret) -> U,

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type Ret = U

The type of value returned when writing the part began successfully.
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type Output = <Wr as MultipartWrite<Part>>::Output

The type of value returned when all parts are written.
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type Error = <Wr as MultipartWrite<Part>>::Error

The type of value returned when an operation fails.
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fn poll_ready( self: Pin<&mut Self>, cx: &mut Context<'_>, ) -> Poll<Result<(), Self::Error>>

Attempts to prepare the MultipartWrite to receive a new part. Read more
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fn start_send( self: Pin<&mut Self>, part: Part, ) -> Result<Self::Ret, Self::Error>

Begin the process of writing a part to this writer, returning the associated type confirming this was done successfully. Read more
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fn poll_flush( self: Pin<&mut Self>, cx: &mut Context<'_>, ) -> Poll<Result<(), Self::Error>>

Flush any remaining output from the writer. Read more
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fn poll_complete( self: Pin<&mut Self>, cx: &mut Context<'_>, ) -> Poll<Result<Self::Output, Self::Error>>

Complete this writer, returning the output. Read more
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impl<'pin, Wr, F> Unpin for MapRet<Wr, F>
where PinnedFieldsOf<__MapRet<'pin, Wr, F>>: Unpin,

Auto Trait Implementations§

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impl<Wr, F> Freeze for MapRet<Wr, F>
where Wr: Freeze, F: Freeze,

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impl<Wr, F> RefUnwindSafe for MapRet<Wr, F>
where Wr: RefUnwindSafe, F: RefUnwindSafe,

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impl<Wr, F> Send for MapRet<Wr, F>
where Wr: Send, F: Send,

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impl<Wr, F> Sync for MapRet<Wr, F>
where Wr: Sync, F: Sync,

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impl<Wr, F> UnwindSafe for MapRet<Wr, F>
where Wr: UnwindSafe, F: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<Wr, Part> MultipartWriteExt<Part> for Wr
where Wr: MultipartWrite<Part>,

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fn buffered(self, capacity: impl Into<Option<usize>>) -> Buffered<Self, Part>
where Self: Sized,

Adds a fixed size buffer to the current writer. Read more
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fn complete(&mut self) -> Complete<'_, Self, Part> ⓘ
where Self: Unpin,

A future that runs this writer to completion, returning the associated output.
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fn fanout<U>(self, other: U) -> Fanout<Self, U, Part>
where Part: Clone, U: MultipartWrite<Part, Error = Self::Error>, Self: Sized,

Fanout the part to multiple writers. Read more
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fn feed(&mut self, part: Part) -> Feed<'_, Self, Part> ⓘ
where Self: Unpin,

A future that completes after the given part has been received by the writer. Read more
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fn flush(&mut self) -> Flush<'_, Self, Part> ⓘ
where Self: Unpin,

A future that completes when the underlying writer has been flushed.
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fn fold_ret<T, F>(self, id: T, f: F) -> FoldRet<Self, F, T>
where F: FnMut(T, &Self::Ret) -> T, Self: Sized,

Accumulate this writer’s returned values, returning a new multipart writer that pairs the underlying writer’s output with the result of the accumulating function.
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fn map<U, F>(self, f: F) -> Map<Self, F>
where F: FnMut(Self::Output) -> U, Self: Sized,

Map this writer’s output type to a different type, returning a new multipart writer with the given output type.
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fn map_err<E, F>(self, f: F) -> MapErr<Self, F>
where F: FnMut(Self::Error) -> E, Self: Sized,

Map this writer’s error type to a different value, returning a new multipart writer with the given error type.
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fn map_part<U, F>(self, f: F) -> MapPart<Self, F>
where F: FnMut(U) -> Result<Part, Self::Error>, Self: MultipartWrite<Part> + Sized,

Pre-compose the underlying writer with a function that transforms a the input part type.
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fn map_ret<U, F>(self, f: F) -> MapRet<Self, F>
where F: FnMut(Self::Ret) -> U, Self: Sized,

Map this writer’s return type to a different value, returning a new multipart writer with the given return type.
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fn on_complete<S, F, Fut>(self, s: S, f: F) -> OnComplete<Self, S, F, Fut>
where F: FnMut(&mut S) -> Fut, Fut: Future<Output = Result<Self, Self::Error>>, Self: Sized,

Returns a writer wrapping this one and having the property that it creates a new self after each poll_complete. Read more
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fn poll_ready_unpin( &mut self, cx: &mut Context<'_>, ) -> Poll<Result<(), Self::Error>>
where Self: Unpin,

A convenience method for calling poll_ready on Unpin writer types.
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fn poll_flush_unpin( &mut self, cx: &mut Context<'_>, ) -> Poll<Result<(), Self::Error>>
where Self: Unpin,

A convenience method for calling poll_flush on Unpin writer types.
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fn poll_complete_unpin( &mut self, cx: &mut Context<'_>, ) -> Poll<Result<Self::Output, Self::Error>>
where Self: Unpin,

A convenience method for calling poll_complete on Unpin writer types.
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fn send(&mut self, part: Part) -> Send<'_, Self, Part> ⓘ
where Self: Unpin,

A future that completes when a part has been fully processed into the writer, including flushing.
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fn then<U, F, Fut>(self, f: F) -> Then<Self, F, Fut>
where F: FnMut(Self::Output) -> Fut, Fut: Future<Output = U>, Self: Sized,

Chain a computation on the output of a writer.
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fn with<U, Fut, F, E>(self, f: F) -> With<Self, Part, U, Fut, F>
where F: FnMut(U) -> Fut, Fut: Future<Output = Result<Part, E>>, E: From<Self::Error>, Self: Sized,

Composes a function in front of the MultipartWrite. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.