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OrchardFallback

zebra_consensus::halo2

Struct OrchardFallback 

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pub struct OrchardFallback {
    vk: &'static ItemVerifyingKey,
}
Expand description

The single-item fallback service for one Orchard circuit era.

When a batch fails, [Fallback] re-runs each item individually through this service. It holds the same verifying key as the batch it backs, so the fallback can never validate an item against a different era’s key than the batch did. The key is named once, when the verifier is built (see batch_verifier).

This is a tiny named service rather than a service_fn closure because the closure would have to capture vk, and a capturing closure has an unnameable, non-Clone type — but the global verifier must be Clone to hand out per-call handles. A &'static field keeps this Copy.

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§vk: &'static ItemVerifyingKey

The verifying key for this era, shared with the batch verifier it backs.

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impl Clone for OrchardFallback

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fn clone(&self) -> OrchardFallback

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for OrchardFallback

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impl Service<Item> for OrchardFallback

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type Response = ()

Responses given by the service.
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type Error = Box<dyn Error + Send + Sync>

Errors produced by the service.
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type Future = Pin<Box<dyn Future<Output = Result<(), Box<dyn Error + Send + Sync>>> + Send>>

The future response value.
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fn poll_ready(&mut self, _cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>

Returns Poll::Ready(Ok(())) when the service is able to process requests. Read more
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fn call(&mut self, item: Item) -> Self::Future

Process the request and return the response asynchronously. Read more

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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fn and_then<F>(self, f: F) -> AndThen<Self, F>
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fn then<F, Response, Error, Fut>(self, f: F) -> Then<Self, F>
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fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.
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fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
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fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> TryConv for T

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fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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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
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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impl<T> WithSubscriber for T

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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
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fn with_current_subscriber(self) -> WithDispatch<Self>

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

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 8 bytes