Enum pallet_mmr_primitives::DataOrHash[−][src]

pub enum DataOrHash<H: Hash, L> {
    Data(L),
    Hash(H::Output),
}

Expand description

An element representing either full data or it’s hash.

See Compact to see how it may be used in practice to reduce the size of proofs in case multiple LeafDataProviders are composed together. This is also used internally by the MMR to differentiate leaf nodes (data) and inner nodes (hashes).

DataOrHash::hash method calculates the hash of this element in it’s compact form, so should be used instead of hashing the encoded form (which will always be non-compact).

Variants

Data(L)

Arbitrary data in it’s full form.

Hash(H::Output)

A hash of some data.

Implementations

impl<H: Hash, L: FullLeaf> DataOrHash<H, L>

pub fn hash(&self) -> H::Output

Retrieve a hash of this item.

Depending on the node type it’s going to either be a contained value for DataOrHash::Hash node, or a hash of SCALE-encoded DataOrHash::Data data.

Trait Implementations

impl<H: Clone + Hash, L: Clone> Clone for DataOrHash<H, L> where
    H::Output: Clone,

fn clone(&self) -> DataOrHash<H, L>

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<H: Hash, L> Debug for DataOrHash<H, L> where
    H: Debug,
    L: Debug,

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

Formats the value using the given formatter. Read more

impl<H: Hash, L: FullLeaf + Decode> Decode for DataOrHash<H, L>

fn decode<I: Input>(value: &mut I) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn skip<I>(input: &mut I) -> Result<(), Error> where
    I: Input,

Attempt to skip the encoded value from input. Read more

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type. Read more

impl<H: Hash, L: FullLeaf> Encode for DataOrHash<H, L>

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

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

fn size_hint(&self) -> usize

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

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

Convert self to an owned vector.

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<H: Hash, L> From<L> for DataOrHash<H, L>

fn from(l: L) -> Self

Performs the conversion.

impl<H: PartialEq + Hash, L: PartialEq> PartialEq<DataOrHash<H, L>> for DataOrHash<H, L> where
    H::Output: PartialEq,

fn eq(&self, other: &DataOrHash<H, L>) -> bool

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

fn ne(&self, other: &DataOrHash<H, L>) -> bool

This method tests for !=.

impl<H: Hash, L> StructuralPartialEq for DataOrHash<H, L>

Auto Trait Implementations

impl<H, L> RefUnwindSafe for DataOrHash<H, L> where
    L: RefUnwindSafe,
    <H as Hash>::Output: RefUnwindSafe,

impl<H, L> Send for DataOrHash<H, L> where
    L: Send,

impl<H, L> Sync for DataOrHash<H, L> where
    L: Sync,

impl<H, L> Unpin for DataOrHash<H, L> where
    L: Unpin,
    <H as Hash>::Output: Unpin,

impl<H, L> UnwindSafe for DataOrHash<H, L> where
    L: UnwindSafe,
    <H as Hash>::Output: UnwindSafe,

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> DecodeAll for T where
    T: Decode,

pub fn decode_all(input: &[u8]) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more

impl<T> DecodeLimit for T where
    T: Decode,

pub fn decode_all_with_depth_limit(limit: u32, input: &[u8]) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more

pub fn decode_with_depth_limit(limit: u32, input: &[u8]) -> Result<T, Error>

Decode Self with the given maximum recursion depth. Read more

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

pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

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

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

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

impl<T> From<!> for T

pub fn from(t: !) -> T

Performs the conversion.

impl<T> From<T> for T

pub fn from(t: T) -> T

Performs the conversion.

impl<T> FullLeaf for T where
    T: Encode + Decode + Clone + PartialEq<T> + Debug,

pub fn using_encoded<R, F>(&Self, F, bool) -> R where
    F: FnOnce(&[u8]) -> R,

Encode the leaf either in it’s full or compact form. Read more

impl<T> Hashable for T where
    T: Codec,

pub fn blake2_128(&self) -> [u8; 16]

pub fn blake2_256(&self) -> [u8; 32]

pub fn blake2_128_concat(&self) -> Vec<u8, Global>

pub fn twox_128(&self) -> [u8; 16]

pub fn twox_256(&self) -> [u8; 32]

pub fn twox_64_concat(&self) -> Vec<u8, Global>

pub fn identity(&self) -> Vec<u8, Global>

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

fn in_current_span(self) -> Instrumented<Self>

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

impl<T, U> Into<U> for T where
    U: From<T>,

pub fn into(self) -> U

Performs the conversion.

impl<T> IsType<T> for T

pub fn from_ref(t: &T) -> &T

Cast reference.

pub fn into_ref(&self) -> &T

Cast reference.

pub fn from_mut(t: &mut T) -> &mut T

Cast mutable reference.

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

Cast mutable reference.

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> KeyedVec for T where
    T: Codec,

pub fn to_keyed_vec(&self, prepend_key: &[u8]) -> Vec<u8, Global>

Return an encoding of Self prepended by given slice.

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

impl<T, U> TryFrom<U> for T where
    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.

impl<T, U> TryInto<U> for T where
    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.

impl<S, T> UncheckedInto<T> for S where
    T: UncheckedFrom<S>,

pub fn unchecked_into(self) -> T

The counterpart to unchecked_from.

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

pub fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of T.

impl<V, T> VZip<V> for T where
    V: MultiLane<T>,

pub fn vzip(self) -> V

impl<S> Codec for S where
    S: Decode + Encode,

impl<'_, '_, T> EncodeLike<&'_ &'_ T> for T where
    T: Encode,

impl<'_, T> EncodeLike<&'_ T> for T where
    T: Encode,

impl<'_, T> EncodeLike<&'_ mut T> for T where
    T: Encode,

impl<T> EncodeLike<Arc<T>> for T where
    T: Encode,

impl<T> EncodeLike<Box<T, Global>> for T where
    T: Encode,

impl<'a, T> EncodeLike<Cow<'a, T>> for T where
    T: ToOwned + Encode,

impl<T> EncodeLike<Rc<T>> for T where
    T: Encode,

impl<T> MaybeDebug for T where
    T: Debug,

impl<T> MaybeDebug for T where
    T: Debug,

impl<T> MaybeRefUnwindSafe for T where
    T: RefUnwindSafe,