Struct Immutable 

pub struct Immutable<T, H = NoHash> { /* private fields */ }

An Immutable<T, H> stores an immutable T plus various derived values.

One of the derived values is the hash of the encoded T, which has type H. H may be NoHash if we do not care about this hash.

Implementations

impl<T, H: HashOrNoHash> Immutable<T, H>

pub fn from_parts(value: T, hash: H, encoded: Bytes) -> Self

Construct an Immutable<T, H> from a T, its hash and its encoding.

pub fn from_value_and_encoded(value: T, encoded: Bytes) -> Self

Construct an Immutable<T, H> from a T and its encoding.

pub fn encoded(&self) -> &Bytes

Returns the encoding of the wrapped value.

pub fn encoded_len(&self) -> usize

Returns the length of the encoding of the wrapped value.

pub fn into_value(self) -> T

Returns the wrapped value.

pub fn into_encoded(self) -> Bytes

Returns the encoding of the wrapped value.

pub fn into_value_and_encoded(self) -> (T, Bytes)

Returns the wrapped value and its encoding.

pub fn into_parts(self) -> (T, Bytes, H)

Returns the wrapped value, hash and its encoding.

impl<T, H: Into<Hash> + Copy> Immutable<T, H>

pub fn hash(&self) -> H

Returns the hash of the encoding of the wrapped value.

impl<T: Encode, H: HashOrNoHash> Immutable<T, H>

pub fn modify_and_encode(&mut self, f: impl FnOnce(&mut T))

Trait Implementations

impl<T, H> Borrow<T> for Immutable<T, H>

fn borrow(&self) -> &T

Immutably borrows from an owned value.

impl<T: Clone, H: Clone> Clone for Immutable<T, H>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug, H: Debug> Debug for Immutable<T, H>

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

Formats the value using the given formatter.

impl<T: Decode, H: HashOrNoHash> Decode for Immutable<T, H>

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

Attempt to deserialise the value from input.

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

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

impl<T, H> Deref for Immutable<T, H>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.

impl<T, H> Encode for Immutable<T, H>

fn size_hint(&self) -> usize

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

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

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

fn encoded_size(&self) -> usize

Calculates the encoded size.

fn encode_to<T>(&self, dest: &mut T)

where T: Output + ?Sized,

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

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

Convert self to an owned vector.

impl From<&Immutable<WrappedWorkPackage<ImmutableWrap>, WorkPackageHash>> for WorkPackageOutline

fn from(package: &ImmutableWorkPackage) -> Self

Converts to this type from the input type.

impl<T: Encode, H: HashOrNoHash> From<T> for Immutable<T, H>

fn from(value: T) -> Self

Converts to this type from the input type.

impl<T: MaxEncodedLen, H> MaxEncodedLen for Immutable<T, H>

fn max_encoded_len() -> usize

Upper bound, in bytes, of the maximum encoded size of this item.