Trait tsukuyomi::Extractor

pub trait Extractor: Send + Sync + 'static {
    type Output: Tuple;
    type Error: Into<Error>;
    type Future: Future<Item = Self::Output, Error = Self::Error> + Send + 'static;

    fn extract(&self, input: &mut Input<'_>) -> Extract<Self>;

    fn into_builder(self) -> Builder<Self>
    where
        Self: Sized,
    { ... }
}

A trait abstracting the extraction of values from Input.

Required Associated Types

type Output: Tuple

The type of output value from this extractor.

type Error: Into<Error>

The error type which will be returned from this extractor.

type Future: Future<Item = Self::Output, Error = Self::Error> + Send + 'static

The type representing asyncrhonous computations performed during extraction.

Required Methods

fn extract(&self, input: &mut Input<'_>) -> Extract<Self>

Performs extraction from the specified Input.

Provided Methods

fn into_builder(self) -> Builder<Self>where
    Self: Sized,

Implementations on Foreign Types

impl<E> Extractor for Box<E>where
    E: Extractor,

type Output = <E as Extractor>::Output

type Error = <E as Extractor>::Error

type Future = <E as Extractor>::Future

fn extract(&self, input: &mut Input<'_>) -> Extract<Self>

impl<E> Extractor for Arc<E>where
    E: Extractor,

type Output = <E as Extractor>::Output

type Error = <E as Extractor>::Error

type Future = <E as Extractor>::Future

fn extract(&self, input: &mut Input<'_>) -> Extract<Self>

impl Extractor for ()

type Output = ()

type Error = Never

type Future = Placeholder<<() as Extractor>::Output, <() as Extractor>::Error>

fn extract(&self, _: &mut Input<'_>) -> Extract<Self>

Implementors

impl<E> Extractor for Builder<E>where
    E: Extractor,

type Output = <E as Extractor>::Output

type Error = <E as Extractor>::Error

type Future = <E as Extractor>::Future