Struct futures_core::future::LocalFutureObj[−][src]

pub struct LocalFutureObj<'a, T> { /* fields omitted */ }

A custom trait object for polling futures, roughly akin to Box<dyn Future<Output = T> + 'a>.

This custom trait object was introduced as currently it is not possible to take dyn Trait by value and Box<dyn Trait> is not available in no_std contexts.

Implementations

`impl<'a, T> LocalFutureObj<'a, T>`[src]

`pub fn new<F: UnsafeFutureObj<'a, T> + 'a>(f: F) -> LocalFutureObj<'a, T>ⓘNotable traits for LocalFutureObj<'_, T> impl<T> Future for LocalFutureObj<'_, T> type Output = T;`[src]

Create a LocalFutureObj from a custom trait object representation.

`pub unsafe fn into_future_obj(self) -> FutureObj<'a, T>ⓘNotable traits for FutureObj<'_, T> impl<T> Future for FutureObj<'_, T> type Output = T;`[src]

Converts the LocalFutureObj into a FutureObj To make this operation safe one has to ensure that the UnsafeFutureObj instance from which this LocalFutureObj was created actually implements Send.

Trait Implementations

`impl<T> Debug for LocalFutureObj<'_, T>`[src]

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

`impl<T> Drop for LocalFutureObj<'_, T>`[src]

`fn drop(&mut self)`[src]

`impl<'a, F: Future<Output = ()> + 'a> From<Box<F, Global>> for LocalFutureObj<'a, ()>`[src]

`fn from(boxed: Box<F>) -> Self`[src]

`impl<'a> From<Box<dyn Future<Output = ()> + 'a, Global>> for LocalFutureObj<'a, ()>`[src]

`fn from(boxed: Box<dyn Future<Output = ()> + 'a>) -> Self`[src]

`impl<'a, T> From<FutureObj<'a, T>> for LocalFutureObj<'a, T>`[src]

`fn from(f: FutureObj<'a, T>) -> LocalFutureObj<'a, T>ⓘNotable traits for LocalFutureObj<'_, T> impl<T> Future for LocalFutureObj<'_, T> type Output = T;`[src]

`impl<'a, F: Future<Output = ()> + 'a> From<Pin<Box<F, Global>>> for LocalFutureObj<'a, ()>`[src]

`fn from(boxed: Pin<Box<F>>) -> Self`[src]

`impl<'a> From<Pin<Box<dyn Future<Output = ()> + 'a, Global>>> for LocalFutureObj<'a, ()>`[src]

`fn from(boxed: Pin<Box<dyn Future<Output = ()> + 'a>>) -> Self`[src]

`impl<T> Future for LocalFutureObj<'_, T>`[src]

`type Output = T`

The type of value produced on completion.

`fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<T>`[src]

`impl<T> Unpin for LocalFutureObj<'_, T>`[src]

Auto Trait Implementations

`impl<'a, T> !RefUnwindSafe for LocalFutureObj<'a, T>`

`impl<'a, T> !Send for LocalFutureObj<'a, T>`

`impl<'a, T> !Sync for LocalFutureObj<'a, T>`

`impl<'a, T> !UnwindSafe for LocalFutureObj<'a, T>`

Blanket Implementations

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`pub fn type_id(&self) -> TypeId`[src]

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

`pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut F impl<'_, F> Future for &'_ mut F where F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;`[src]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

`pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut F impl<'_, F> Future for &'_ mut F where F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;`[src]

`impl<T> From<T> for T`[src]

`pub fn from(t: T) -> T`[src]

`impl<T, U> Into for T where U: From<T>,` [src]

`pub fn into(self) -> U`[src]

`impl<F> IntoFuture for F where F: Future,` [src]

`type Output = <F as Future>::Output`

🔬 This is a nightly-only experimental API. (into_future)

The output that the future will produce on completion.

`type Future = F`

🔬 This is a nightly-only experimental API. (into_future)

Which kind of future are we turning this into?

`pub fn into_future(self) -> <F as IntoFuture>::Future`[src]

`impl<T, U> TryFrom for T where U: Into<T>,` [src]

`type Error = Infallible`

The type returned in the event of a conversion error.

`pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>`[src]

`impl<F, T, E> TryFuture for F where F: Future<Output = Result<T, E>> + ?Sized,` [src]

`type Ok = T`

The type of successful values yielded by this future

`type Error = E`

The type of failures yielded by this future

`pub fn try_poll(Pin<&mut F>, &mut Context<'_>) -> Poll<<F as Future>::Output>`[src]

`impl<T, U> TryInto for T where U: TryFrom<T>,` [src]

`type Error = >::Error`

The type returned in the event of a conversion error.

Struct futures_core::future::LocalFutureObj[−][src]

Implementations

impl<'a, T> LocalFutureObj<'a, T>[src]

pub fn new<F: UnsafeFutureObj<'a, T> + 'a>(f: F) -> LocalFutureObj<'a, T>ⓘNotable traits for LocalFutureObj<'_, T>impl<T> Future for LocalFutureObj<'_, T> type Output = T;[src]

Notable traits for LocalFutureObj<'_, T>

pub unsafe fn into_future_obj(self) -> FutureObj<'a, T>ⓘNotable traits for FutureObj<'_, T>impl<T> Future for FutureObj<'_, T> type Output = T;[src]

Notable traits for FutureObj<'_, T>

Trait Implementations

impl<T> Debug for LocalFutureObj<'_, T>[src]

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

impl<T> Drop for LocalFutureObj<'_, T>[src]

fn drop(&mut self)[src]

impl<'a, F: Future<Output = ()> + 'a> From<Box<F, Global>> for LocalFutureObj<'a, ()>[src]

fn from(boxed: Box<F>) -> Self[src]

impl<'a> From<Box<dyn Future<Output = ()> + 'a, Global>> for LocalFutureObj<'a, ()>[src]

fn from(boxed: Box<dyn Future<Output = ()> + 'a>) -> Self[src]

impl<'a, T> From<FutureObj<'a, T>> for LocalFutureObj<'a, T>[src]

fn from(f: FutureObj<'a, T>) -> LocalFutureObj<'a, T>ⓘNotable traits for LocalFutureObj<'_, T>impl<T> Future for LocalFutureObj<'_, T> type Output = T;[src]

Notable traits for LocalFutureObj<'_, T>

impl<'a, F: Future<Output = ()> + 'a> From<Pin<Box<F, Global>>> for LocalFutureObj<'a, ()>[src]

fn from(boxed: Pin<Box<F>>) -> Self[src]

impl<'a> From<Pin<Box<dyn Future<Output = ()> + 'a, Global>>> for LocalFutureObj<'a, ()>[src]

fn from(boxed: Pin<Box<dyn Future<Output = ()> + 'a>>) -> Self[src]

impl<T> Future for LocalFutureObj<'_, T>[src]

type Output = T

fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<T>[src]

impl<T> Unpin for LocalFutureObj<'_, T>[src]

Auto Trait Implementations

impl<'a, T> !RefUnwindSafe for LocalFutureObj<'a, T>

impl<'a, T> !Send for LocalFutureObj<'a, T>

impl<'a, T> !Sync for LocalFutureObj<'a, T>

impl<'a, T> !UnwindSafe for LocalFutureObj<'a, T>

Blanket Implementations

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

pub fn type_id(&self) -> TypeId[src]

impl<T> Borrow<T> for T where T: ?Sized, [src]

pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut Fimpl<'_, F> Future for &'_ mut F where F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;[src]

Notable traits for &'_ mut F

impl<T> BorrowMut<T> for T where T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut Fimpl<'_, F> Future for &'_ mut F where F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;[src]

Notable traits for &'_ mut F

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

impl<T, U> Into<U> for T where U: From<T>, [src]

pub fn into(self) -> U[src]

impl<F> IntoFuture for F where F: Future, [src]

type Output = <F as Future>::Output

type Future = F

pub fn into_future(self) -> <F as IntoFuture>::Future[src]

impl<T, U> TryFrom<U> for T where U: Into<T>, [src]

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

impl<F, T, E> TryFuture for F where F: Future<Output = Result<T, E>> + ?Sized, [src]

type Ok = T

type Error = E

pub fn try_poll(Pin<&mut F>, &mut Context<'_>) -> Poll<<F as Future>::Output>[src]

impl<T, U> TryInto<U> for T where U: TryFrom<T>, [src]

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

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]