pub struct Empty<D> { /* private fields */ }Expand description
A body that is always empty.
Implementations
Trait Implementations
sourceimpl<D: Buf> Body for Empty<D>
impl<D: Buf> Body for Empty<D>
type Data = D
type Data = D
Values yielded by the Body.
type Error = Infallible
type Error = Infallible
The error type this Body might generate.
sourcefn poll_data(
self: Pin<&mut Self>,
_cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Data, Self::Error>>>
fn poll_data(
self: Pin<&mut Self>,
_cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Data, Self::Error>>>
Attempt to pull out the next data buffer of this stream.
sourcefn poll_trailers(
self: Pin<&mut Self>,
_cx: &mut Context<'_>
) -> Poll<Result<Option<HeaderMap>, Self::Error>>
fn poll_trailers(
self: Pin<&mut Self>,
_cx: &mut Context<'_>
) -> Poll<Result<Option<HeaderMap>, Self::Error>>
Poll for an optional single HeaderMap of trailers. Read more
sourcefn is_end_stream(&self) -> bool
fn is_end_stream(&self) -> bool
Returns true when the end of stream has been reached. Read more
sourcefn size_hint(&self) -> SizeHint
fn size_hint(&self) -> SizeHint
Returns the bounds on the remaining length of the stream. Read more
sourcefn data(&mut self) -> Data<'_, Self>ⓘNotable traits for Data<'a, T>impl<'a, T: Body + Unpin + ?Sized> Future for Data<'a, T> type Output = Option<Result<T::Data, T::Error>>; where
Self: Unpin + Sized,
fn data(&mut self) -> Data<'_, Self>ⓘNotable traits for Data<'a, T>impl<'a, T: Body + Unpin + ?Sized> Future for Data<'a, T> type Output = Option<Result<T::Data, T::Error>>; where
Self: Unpin + Sized,
Returns future that resolves to next data chunk, if any.
sourcefn trailers(&mut self) -> Trailers<'_, Self>ⓘNotable traits for Trailers<'a, T>impl<'a, T: Body + Unpin + ?Sized> Future for Trailers<'a, T> type Output = Result<Option<HeaderMap>, T::Error>; where
Self: Unpin + Sized,
fn trailers(&mut self) -> Trailers<'_, Self>ⓘNotable traits for Trailers<'a, T>impl<'a, T: Body + Unpin + ?Sized> Future for Trailers<'a, T> type Output = Result<Option<HeaderMap>, T::Error>; where
Self: Unpin + Sized,
Returns future that resolves to trailers, if any.
sourcefn map_data<F, B>(self, f: F) -> MapData<Self, F> where
Self: Sized,
F: FnMut(Self::Data) -> B,
B: Buf,
fn map_data<F, B>(self, f: F) -> MapData<Self, F> where
Self: Sized,
F: FnMut(Self::Data) -> B,
B: Buf,
Maps this body’s data value to a different value.
sourcefn map_err<F, E>(self, f: F) -> MapErr<Self, F> where
Self: Sized,
F: FnMut(Self::Error) -> E,
fn map_err<F, E>(self, f: F) -> MapErr<Self, F> where
Self: Sized,
F: FnMut(Self::Error) -> E,
Maps this body’s error value to a different value.
sourcefn boxed(self) -> BoxBody<Self::Data, Self::Error> where
Self: Sized + Send + Sync + 'static,
fn boxed(self) -> BoxBody<Self::Data, Self::Error> where
Self: Sized + Send + Sync + 'static,
Turn this body into a boxed trait object.
sourcefn boxed_unsync(self) -> UnsyncBoxBody<Self::Data, Self::Error> where
Self: Sized + Send + 'static,
fn boxed_unsync(self) -> UnsyncBoxBody<Self::Data, Self::Error> where
Self: Sized + Send + 'static,
Turn this body into a boxed trait object that is !Sync.
impl<D> Copy for Empty<D>
Auto Trait Implementations
impl<D> RefUnwindSafe for Empty<D>
impl<D> Send for Empty<D>
impl<D> Sync for Empty<D>
impl<D> Unpin for Empty<D>
impl<D> UnwindSafe for Empty<D>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcepub fn to_owned(&self) -> T
pub fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
sourcepub fn clone_into(&self, target: &mut T)
pub fn clone_into(&self, target: &mut T)
toowned_clone_into)Uses borrowed data to replace owned data, usually by cloning. Read more