Struct futures::compat::Compat

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[+] Expand attributes
#[must_use = "futures do nothing unless you `.await` or poll them"]pub struct Compat<T> { /* fields omitted */ }

[−] Expand description

Converts a futures 0.3 TryFuture or TryStream into a futures 0.1 Future or Stream.

Implementations

impl<T> Compat<T>[−]

pub fn new(inner: T) -> Compat<T>[−]

Creates a new Compat.

For types which implement appropriate futures 0.3 traits, the result will be a type which implements the corresponding futures 0.1 type.

pub fn get_ref(&self) -> &T[−]

Get a reference to 0.3 Future, Stream, AsyncRead, or AsyncWrite object contained within.

pub fn get_mut(&mut self) -> &mut T[−]

Get a mutable reference to 0.3 Future, Stream, AsyncRead, or AsyncWrite object contained within.

pub fn into_inner(self) -> T[−]

Returns the inner item.

Trait Implementations

impl<T> Clone for Compat<T> where
    T: Clone, [+]

[+] Show hidden undocumented items

pub fn clone(&self) -> Compat<T>[−]

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl<T> Copy for Compat<T> where
    T: Copy, 

impl<T> Debug for Compat<T> where
    T: Debug, [+]

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pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>[−]

Formats the value using the given formatter.

impl<Sp, Fut> Executor<Fut> for Compat<Sp> where
    Fut: Future<Item = (), Error = ()> + Send + 'static,
    &'a Sp: for<'a> Spawn, [+]

[+] Show hidden undocumented items

pub fn execute(&self, future: Fut) -> Result<(), ExecuteError<Fut>>[−]

Spawns a future to run on this Executor, typically in the “background”.

impl<Fut> Future for Compat<Fut> where
    Fut: TryFuture + Unpin, [+]

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type Item = <Fut as TryFuture>::Ok

The type of value that this future will resolved with if it is successful.

type Error = <Fut as TryFuture>::Error

The type of error that this future will resolve with if it fails in a normal fashion.

pub fn poll(
    &mut self
) -> Result<Async<<Compat<Fut> as Future>::Item>, <Compat<Fut> as Future>::Error>[−]

Query this future to see if its value has become available, registering interest if it is not.

pub fn wait(self) -> Result<Self::Item, Self::Error>[−]

Block the current thread until this future is resolved.

pub fn map<F, U>(self, f: F) -> Map<Self, F> where
    F: FnOnce(Self::Item) -> U, [−]

Map this future’s result to a different type, returning a new future of the resulting type.

pub fn map_err<F, E>(self, f: F) -> MapErr<Self, F> where
    F: FnOnce(Self::Error) -> E, [−]

Map this future’s error to a different error, returning a new future.

pub fn from_err<E>(self) -> FromErr<Self, E> where
    E: From<Self::Error>, [−]

Map this future’s error to any error implementing From for this future’s Error, returning a new future.

pub fn then<F, B>(self, f: F) -> Then<Self, B, F> where
    B: IntoFuture,
    F: FnOnce(Result<Self::Item, Self::Error>) -> B, [−]

Chain on a computation for when a future finished, passing the result of the future to the provided closure f.

pub fn and_then<F, B>(self, f: F) -> AndThen<Self, B, F> where
    B: IntoFuture<Error = Self::Error>,
    F: FnOnce(Self::Item) -> B, [−]

Execute another future after this one has resolved successfully.

pub fn or_else<F, B>(self, f: F) -> OrElse<Self, B, F> where
    B: IntoFuture<Item = Self::Item>,
    F: FnOnce(Self::Error) -> B, [−]

Execute another future if this one resolves with an error.

pub fn select<B>(self, other: B) -> Select<Self, <B as IntoFuture>::Future> where
    B: IntoFuture<Item = Self::Item, Error = Self::Error>, [−]

Waits for either one of two futures to complete.

pub fn select2<B>(self, other: B) -> Select2<Self, <B as IntoFuture>::Future> where
    B: IntoFuture, [−]

Waits for either one of two differently-typed futures to complete.

pub fn join<B>(self, other: B) -> Join<Self, <B as IntoFuture>::Future> where
    B: IntoFuture<Error = Self::Error>, [−]

Joins the result of two futures, waiting for them both to complete.

pub fn join3<B, C>(
    self,
    b: B,
    c: C
) -> Join3<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future> where
    C: IntoFuture<Error = Self::Error>,
    B: IntoFuture<Error = Self::Error>, [−]

Same as join, but with more futures.

pub fn join4<B, C, D>(
    self,
    b: B,
    c: C,
    d: D
) -> Join4<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future> where
    C: IntoFuture<Error = Self::Error>,
    B: IntoFuture<Error = Self::Error>,
    D: IntoFuture<Error = Self::Error>, [−]

Same as join, but with more futures.

pub fn join5<B, C, D, E>(
    self,
    b: B,
    c: C,
    d: D,
    e: E
) -> Join5<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future, <E as IntoFuture>::Future> where
    C: IntoFuture<Error = Self::Error>,
    E: IntoFuture<Error = Self::Error>,
    B: IntoFuture<Error = Self::Error>,
    D: IntoFuture<Error = Self::Error>, [−]

Same as join, but with more futures.

pub fn into_stream(self) -> IntoStream<Self>[−]

Convert this future into a single element stream.

pub fn flatten(self) -> Flatten<Self> where
    Self::Item: IntoFuture,
    <Self::Item as IntoFuture>::Error: From<Self::Error>, [−]

Flatten the execution of this future when the successful result of this future is itself another future.

pub fn flatten_stream(self) -> FlattenStream<Self> where
    Self::Item: Stream,
    <Self::Item as Stream>::Error == Self::Error, [−]

Flatten the execution of this future when the successful result of this future is a stream.

pub fn fuse(self) -> Fuse<Self>[−]

Fuse a future such that poll will never again be called once it has completed.

pub fn inspect<F>(self, f: F) -> Inspect<Self, F> where
    F: FnOnce(&Self::Item), [−]

Do something with the item of a future, passing it on.

pub fn catch_unwind(self) -> CatchUnwind<Self> where
    Self: UnwindSafe, [−]

Catches unwinding panics while polling the future.

pub fn shared(self) -> Shared<Self>[−]

Create a cloneable handle to this future where all handles will resolve to the same result.

impl<St> Stream for Compat<St> where
    St: TryStream + Unpin, [+]

[+] Show hidden undocumented items

type Item = <St as TryStream>::Ok

The type of item this stream will yield on success.

type Error = <St as TryStream>::Error

The type of error this stream may generate.

pub fn poll(
    &mut self
) -> Result<Async<Option<<Compat<St> as Stream>::Item>>, <Compat<St> as Stream>::Error>[−]

Attempt to pull out the next value of this stream, returning None if the stream is finished.

pub fn wait(self) -> Wait<Self>[−]

Creates an iterator which blocks the current thread until each item of this stream is resolved.

pub fn into_future(self) -> StreamFuture<Self>[−]

Converts this stream into a Future.

pub fn map<U, F>(self, f: F) -> Map<Self, F> where
    F: FnMut(Self::Item) -> U, [−]

Converts a stream of type T to a stream of type U.

pub fn map_err<U, F>(self, f: F) -> MapErr<Self, F> where
    F: FnMut(Self::Error) -> U, [−]

Converts a stream of error type T to a stream of error type U.

pub fn filter<F>(self, f: F) -> Filter<Self, F> where
    F: FnMut(&Self::Item) -> bool, [−]

Filters the values produced by this stream according to the provided predicate.

pub fn filter_map<F, B>(self, f: F) -> FilterMap<Self, F> where
    F: FnMut(Self::Item) -> Option<B>, [−]

Filters the values produced by this stream while simultaneously mapping them to a different type.

pub fn then<F, U>(self, f: F) -> Then<Self, F, U> where
    F: FnMut(Result<Self::Item, Self::Error>) -> U,
    U: IntoFuture, [−]

Chain on a computation for when a value is ready, passing the resulting item to the provided closure f.

pub fn and_then<F, U>(self, f: F) -> AndThen<Self, F, U> where
    F: FnMut(Self::Item) -> U,
    U: IntoFuture<Error = Self::Error>, [−]

Chain on a computation for when a value is ready, passing the successful results to the provided closure f.

pub fn or_else<F, U>(self, f: F) -> OrElse<Self, F, U> where
    F: FnMut(Self::Error) -> U,
    U: IntoFuture<Item = Self::Item>, [−]

Chain on a computation for when an error happens, passing the erroneous result to the provided closure f.

pub fn collect(self) -> Collect<Self>[−]

Collect all of the values of this stream into a vector, returning a future representing the result of that computation.

pub fn concat2(self) -> Concat2<Self> where
    Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
    Self::Item: IntoIterator,
    Self::Item: Default, [−]

Concatenate all results of a stream into a single extendable destination, returning a future representing the end result.

pub fn concat(self) -> Concat<Self> where
    Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
    Self::Item: IntoIterator, [−]

👎 Deprecated since 0.1.14:

please use Stream::concat2 instead

Concatenate all results of a stream into a single extendable destination, returning a future representing the end result.

pub fn fold<F, T, Fut>(self, init: T, f: F) -> Fold<Self, F, Fut, T> where
    F: FnMut(T, Self::Item) -> Fut,
    Fut: IntoFuture<Item = T>,
    Self::Error: From<<Fut as IntoFuture>::Error>, [−]

Execute an accumulating computation over a stream, collecting all the values into one final result.

pub fn flatten(self) -> Flatten<Self> where
    Self::Item: Stream,
    <Self::Item as Stream>::Error: From<Self::Error>, [−]

Flattens a stream of streams into just one continuous stream.

pub fn skip_while<P, R>(self, pred: P) -> SkipWhile<Self, P, R> where
    P: FnMut(&Self::Item) -> R,
    R: IntoFuture<Item = bool, Error = Self::Error>, [−]

Skip elements on this stream while the predicate provided resolves to true.

pub fn take_while<P, R>(self, pred: P) -> TakeWhile<Self, P, R> where
    P: FnMut(&Self::Item) -> R,
    R: IntoFuture<Item = bool, Error = Self::Error>, [−]

Take elements from this stream while the predicate provided resolves to true.

pub fn for_each<F, U>(self, f: F) -> ForEach<Self, F, U> where
    F: FnMut(Self::Item) -> U,
    U: IntoFuture<Item = (), Error = Self::Error>, [−]

Runs this stream to completion, executing the provided closure for each element on the stream.

pub fn from_err<E>(self) -> FromErr<Self, E> where
    E: From<Self::Error>, [−]

Map this stream’s error to any error implementing From for this stream’s Error, returning a new stream.

pub fn take(self, amt: u64) -> Take<Self>[−]

Creates a new stream of at most amt items of the underlying stream.

pub fn skip(self, amt: u64) -> Skip<Self>[−]

Creates a new stream which skips amt items of the underlying stream.

pub fn fuse(self) -> Fuse<Self>[−]

Fuse a stream such that poll will never again be called once it has finished.

pub fn by_ref(&mut self) -> &mut Self[−]

Borrows a stream, rather than consuming it.

pub fn catch_unwind(self) -> CatchUnwind<Self> where
    Self: UnwindSafe, [−]

Catches unwinding panics while polling the stream.

pub fn buffered(self, amt: usize) -> Buffered<Self> where
    Self::Item: IntoFuture,
    <Self::Item as IntoFuture>::Error == Self::Error, [−]

An adaptor for creating a buffered list of pending futures.

pub fn buffer_unordered(self, amt: usize) -> BufferUnordered<Self> where
    Self::Item: IntoFuture,
    <Self::Item as IntoFuture>::Error == Self::Error, [−]

An adaptor for creating a buffered list of pending futures (unordered).

pub fn merge<S>(self, other: S) -> Merge<Self, S> where
    S: Stream<Error = Self::Error>, [−]

👎 Deprecated:

functionality provided by select now

An adapter for merging the output of two streams.

pub fn zip<S>(self, other: S) -> Zip<Self, S> where
    S: Stream<Error = Self::Error>, [−]

An adapter for zipping two streams together.

pub fn chain<S>(self, other: S) -> Chain<Self, S> where
    S: Stream<Item = Self::Item, Error = Self::Error>, [−]

Adapter for chaining two stream.

pub fn peekable(self) -> Peekable<Self>[−]

Creates a new stream which exposes a peek method.

pub fn chunks(self, capacity: usize) -> Chunks<Self>[−]

An adaptor for chunking up items of the stream inside a vector.

pub fn select<S>(self, other: S) -> Select<Self, S> where
    S: Stream<Item = Self::Item, Error = Self::Error>, [−]

Creates a stream that selects the next element from either this stream or the provided one, whichever is ready first.

pub fn forward<S>(self, sink: S) -> Forward<Self, S> where
    S: Sink<SinkItem = Self::Item>,
    Self::Error: From<<S as Sink>::SinkError>, [−]

A future that completes after the given stream has been fully processed into the sink, including flushing.

pub fn split(self) -> (SplitSink<Self>, SplitStream<Self>) where
    Self: Sink, [−]

Splits this Stream + Sink object into separate Stream and Sink objects.

pub fn inspect<F>(self, f: F) -> Inspect<Self, F> where
    F: FnMut(&Self::Item), [−]

Do something with each item of this stream, afterwards passing it on.

pub fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
    F: FnMut(&Self::Error), [−]

Do something with the error of this stream, afterwards passing it on.