Struct arc_swap::access::AccessConvert[−][src]

pub struct AccessConvert<D>(pub D);
Expand description

DynAccess to Access wrapper.

A workaround to allow double-dyn mapping, since Box<dyn DynAccess> doesn’t implement Access and Map needs that.

use std::sync::Arc;

use arc_swap::ArcSwap;
use arc_swap::access::{AccessConvert, DynAccess, Map};

struct Inner {
    val: usize,
}

struct Middle {
    inner: Inner,
}

struct Outer {
    middle: Middle,
}

let outer = Arc::new(ArcSwap::from_pointee(Outer {
    middle: Middle {
        inner: Inner {
            val: 42,
        }
    }
}));

let middle: Arc<dyn DynAccess<Middle>> =
    Arc::new(Map::new(outer, |outer: &Outer| &outer.middle));
let inner: Arc<dyn DynAccess<Inner>> =
    Arc::new(Map::new(AccessConvert(middle), |middle: &Middle| &middle.inner));
let guard = inner.load();
assert_eq!(42, guard.val);

Trait Implementations

impl<T, D> Access<T> for AccessConvert<D> where
    D: Deref,
    D::Target: DynAccess<T>, [src]

type Guard = DynGuard<T>

A guard object containing the value and keeping it alive. Read more

fn load(&self) -> Self::Guard[src]

The loading method. Read more

Auto Trait Implementations

impl<D> RefUnwindSafe for AccessConvert<D> where
    D: RefUnwindSafe, 

impl<D> Send for AccessConvert<D> where
    D: Send, 

impl<D> Sync for AccessConvert<D> where
    D: Sync, 

impl<D> Unpin for AccessConvert<D> where
    D: Unpin, 

impl<D> UnwindSafe for AccessConvert<D> where
    D: UnwindSafe, 

Blanket Implementations

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

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

Gets the TypeId of self. Read more

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

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

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

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T, A> DynAccess<T> for A where
    A: Access<T>,
    <A as Access<T>>::Guard: 'static, [src]

pub fn load(&Self) -> DynGuard<T>[src]

The equivalent of Access::load.

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

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

Performs the conversion.

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

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

Performs the conversion.

impl<T, U> TryFrom<U> 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<U>>::Error>[src]

Performs the conversion.

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

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

The type returned in the event of a conversion error.

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

Performs the conversion.