Struct runtime_injector::ConstantProvider

pub struct ConstantProvider<R> where
    R: Service,  { /* fields omitted */ }

A provider which returns a constant, predetermined value. Note that this is technically a singleton service in that it does not recreate the value each time it is requested.

Implementations

impl<R> ConstantProvider<R> where
    R: Service, 

#[must_use]

pub fn new(value: R) -> Self

Creates a new ConstantProvider using a predetermined value.

Trait Implementations

impl<T: Service> From<T> for ConstantProvider<T>

fn from(value: T) -> Self

Performs the conversion.

impl<R> TypedProvider for ConstantProvider<R> where
    R: Service, 

type Result = R

The type of service this can provide.

fn provide_typed(
    &mut self,
    _injector: &Injector,
    _request_info: &RequestInfo
) -> InjectResult<Svc<Self::Result>>

Provides an instance of the service. The Injector passed in can be used to retrieve instances of any dependencies this service has.

fn provide_owned_typed(
    &mut self,
    _injector: &Injector,
    _request_info: &RequestInfo
) -> InjectResult<Box<Self::Result>>

Provides an owned instance of the service. Not all providers can provide an owned variant of the service.

fn with_interface<I: ?Sized + InterfaceFor<Self::Result>>(
    self
) -> InterfaceProvider<I, Self>

Provides this service as an implementation of a particular interface. Rather than requesting this service with its concrete type, it can instead be requested by its interface type.