xitca_web::handler::state

Struct StateRef

pub struct StateRef<'a, S>(pub &'a S)
where
    S: ?Sized;

Expand description

App state extractor. S type must be the same with the type passed to App::with_xxx_state(S).

Tuple Fields§

§0: &'a S

Trait Implementations§

impl<S> Debug for StateRef<'_, S>
where S: Debug,

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

Formats the value using the given formatter. Read more

impl<S> Deref for StateRef<'_, S>

type Target = S

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<S> Display for StateRef<'_, S>
where S: Display,

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

Formats the value using the given formatter. Read more

impl<'a, 'r, C, B, T> FromRequest<'a, WebContext<'r, C, B>> for StateRef<'a, T>
where C: BorrowState<T>, T: ?Sized + 'static,

type Type<'b> = StateRef<'b, T>

type Error = Error

async fn from_request( ctx: &'a WebContext<'r, C, B>, ) -> Result<Self, Self::Error>

Auto Trait Implementations§

impl<'a, S> Freeze for StateRef<'a, S>
where S: ?Sized,

impl<'a, S> RefUnwindSafe for StateRef<'a, S>
where S: RefUnwindSafe + ?Sized,

impl<'a, S> Send for StateRef<'a, S>
where S: Sync + ?Sized,

impl<'a, S> Sync for StateRef<'a, S>
where S: Sync + ?Sized,

impl<'a, S> Unpin for StateRef<'a, S>
where S: ?Sized,

impl<'a, S> UnwindSafe for StateRef<'a, S>
where S: RefUnwindSafe + ?Sized,

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more

impl<T> BorrowState<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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

fn into(self) -> U

Calls U::from(self).

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

impl<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

type Target = T

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

The target type on which the method may be called.

impl<T> Same for T

type Output = T

Should always be Self

impl<T> ToString for T
where T: Display + ?Sized,

fn to_string(&self) -> String

Converts the given value to a String. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn vzip(self) -> V

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

impl<T> Formattable for T
where T: Deref, <T as Deref>::Target: Formattable,

impl<T> Parsable for T
where T: Deref, <T as Deref>::Target: Parsable,