Enum sp_runtime::generic::DigestItemRef[−][src]

pub enum DigestItemRef<'a, Hash: 'a> {
    ChangesTrieRoot(&'a Hash),
    PreRuntime(&'a ConsensusEngineId, &'a Vec<u8>),
    Consensus(&'a ConsensusEngineId, &'a Vec<u8>),
    Seal(&'a ConsensusEngineId, &'a Vec<u8>),
    ChangesTrieSignal(&'a ChangesTrieSignal),
    Other(&'a Vec<u8>),
}

Expand description

A ‘referencing view’ for digest item. Does not own its contents. Used by final runtime implementations for encoding/decoding its log items.

Variants

ChangesTrieRoot(&'a Hash)

Reference to DigestItem::ChangesTrieRoot.

PreRuntime(&'a ConsensusEngineId, &'a Vec<u8>)

A pre-runtime digest.

These are messages from the consensus engine to the runtime, although the consensus engine can (and should) read them itself to avoid code and state duplication. It is erroneous for a runtime to produce these, but this is not (yet) checked.

Consensus(&'a ConsensusEngineId, &'a Vec<u8>)

A message from the runtime to the consensus engine. This should never be generated by the native code of any consensus engine, but this is not checked (yet).

Seal(&'a ConsensusEngineId, &'a Vec<u8>)

Put a Seal on it. This is only used by native code, and is never seen by runtimes.

ChangesTrieSignal(&'a ChangesTrieSignal)

Digest item that contains signal from changes tries manager to the native code.

Other(&'a Vec<u8>)

Any ‘non-system’ digest item, opaque to the native code.

Implementations

impl<'a, Hash> DigestItemRef<'a, Hash>

pub fn as_changes_trie_root(&self) -> Option<&'a Hash>

Cast this digest item into ChangesTrieRoot.

pub fn as_pre_runtime(&self) -> Option<(ConsensusEngineId, &'a [u8])>

Cast this digest item into PreRuntime

pub fn as_consensus(&self) -> Option<(ConsensusEngineId, &'a [u8])>

Cast this digest item into Consensus

pub fn as_seal(&self) -> Option<(ConsensusEngineId, &'a [u8])>

Cast this digest item into Seal

pub fn as_changes_trie_signal(&self) -> Option<&'a ChangesTrieSignal>

Cast this digest item into ChangesTrieSignal.

pub fn as_other(&self) -> Option<&'a [u8]>

Cast this digest item into PreRuntime

pub fn try_as_raw(&self, id: OpaqueDigestItemId<'_>) -> Option<&'a [u8]>

Try to match this digest item to the given opaque item identifier; if it matches, then return the opaque data it contains.

pub fn try_to<T: Decode>(&self, id: OpaqueDigestItemId<'_>) -> Option<T>

Try to match this digest item to the given opaque item identifier; if it matches, then try to cast to the given data type; if that works, return it.

pub fn seal_try_to<T: Decode>(&self, id: &ConsensusEngineId) -> Option<T>

Try to match this to a Self::Seal, check id matches and decode it.

Returns None if this isn’t a seal item, the id doesn’t match or when the decoding fails.

pub fn consensus_try_to<T: Decode>(&self, id: &ConsensusEngineId) -> Option<T>

Try to match this to a Self::Consensus, check id matches and decode it.

Returns None if this isn’t a consensus item, the id doesn’t match or when the decoding fails.

pub fn pre_runtime_try_to<T: Decode>(&self, id: &ConsensusEngineId) -> Option<T>

Try to match this to a Self::PreRuntime, check id matches and decode it.

Returns None if this isn’t a pre-runtime item, the id doesn’t match or when the decoding fails.

Trait Implementations

impl<'a, Hash: Clone + 'a> Clone for DigestItemRef<'a, Hash>

fn clone(&self) -> DigestItemRef<'a, Hash>

Returns a copy of the value. Read more

1.0.0[src]

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

Performs copy-assignment from source. Read more

impl<'a, Hash: 'a> Debug for DigestItemRef<'a, Hash> where
    Hash: Debug,

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

Formats the value using the given formatter. Read more

impl<'a, Hash: Encode> Encode for DigestItemRef<'a, Hash>

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding. Read more

fn encode_to<T>(&self, dest: &mut T) where
    T: Output + ?Sized,

Convert self to a slice and append it to the destination.

fn using_encoded<R, F>(&self, f: F) -> R where
    F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size. Read more

impl<'a, Hash: PartialEq + 'a> PartialEq<DigestItemRef<'a, Hash>> for DigestItemRef<'a, Hash>

fn eq(&self, other: &DigestItemRef<'a, Hash>) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

fn ne(&self, other: &DigestItemRef<'a, Hash>) -> bool

This method tests for !=.

impl<'a, Hash: Encode> EncodeLike<DigestItemRef<'a, Hash>> for DigestItemRef<'a, Hash>

impl<'a, Hash: Eq + 'a> Eq for DigestItemRef<'a, Hash>

impl<'a, Hash: 'a> StructuralEq for DigestItemRef<'a, Hash>

impl<'a, Hash: 'a> StructuralPartialEq for DigestItemRef<'a, Hash>

Auto Trait Implementations

impl<'a, Hash> RefUnwindSafe for DigestItemRef<'a, Hash> where
    Hash: RefUnwindSafe,

impl<'a, Hash> Send for DigestItemRef<'a, Hash> where
    Hash: Sync,

impl<'a, Hash> Sync for DigestItemRef<'a, Hash> where
    Hash: Sync,

impl<'a, Hash> Unpin for DigestItemRef<'a, Hash>

impl<'a, Hash> UnwindSafe for DigestItemRef<'a, Hash> where
    Hash: RefUnwindSafe,

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

impl<T> CheckedConversion for T

fn checked_from<T>(t: T) -> Option<Self> where
    Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more

fn checked_into<T>(self) -> Option<T> where
    Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more

impl<T> Downcast for T where
    T: Any,

pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>ⓘNotable traits for Box<R, Global>
impl<R> Read for Box<R, Global> where
    R: Read + ?Sized, impl<W> Write for Box<W, Global> where
    W: Write + ?Sized, impl<F, A> Future for Box<F, A> where
    F: Future + Unpin + ?Sized,
    A: Allocator + 'static,     type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
    I: Iterator + ?Sized,
    A: Allocator,     type Item = <I as Iterator>::Item;

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read more

pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more

pub fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s. Read more

pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s. Read more

impl<T> DowncastSync for T where
    T: Any + Send + Sync,

pub fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send + 'static>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait. Read more

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    T: Clone,

pub fn __clone_box(&self, Private) -> *mut ()

impl<T> From<T> for T

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Performs the conversion.

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

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

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    U: From<T>,

pub fn into(self) -> U

Performs the conversion.

impl<T, Outer> IsWrappedBy<Outer> for T where
    T: From<Outer>,
    Outer: AsRef<T> + AsMut<T> + From<T>,

pub fn from_ref(outer: &Outer) -> &T

Get a reference to the inner from the outer.

pub fn from_mut(outer: &mut Outer) -> &mut T

Get a mutable reference to the inner from the outer.

impl<T> Same<T> for T

type Output = T

Should always be Self

impl<T> SaturatedConversion for T

fn saturated_from<T>(t: T) -> Self where
    Self: UniqueSaturatedFrom<T>,

Convert from a value of T into an equivalent instance of Self. Read more

fn saturated_into<T>(self) -> T where
    Self: UniqueSaturatedInto<T>,

Consume self to return an equivalent value of T. Read more

impl<T> ToOwned for T where
    T: Clone,

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)

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

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

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    U: Into<T>,

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>

Performs the conversion.

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    U: TryFrom<T>,

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>

Performs the conversion.

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    T: UncheckedFrom<S>,

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The counterpart to unchecked_from.

impl<T, S> UniqueSaturatedInto<T> for S where
    T: Bounded,
    S: TryInto<T>,

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Consume self to return an equivalent value of T.

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    V: MultiLane<T>,

pub fn vzip(self) -> V

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    T: Encode,

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    T: Encode,

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