Struct staging_xcm::DoubleEncoded

pub struct DoubleEncoded<T> { /* private fields */ }

Wrapper around the encoded and decoded versions of a value. Caches the decoded value once computed.

Implementations

impl<T> DoubleEncoded<T>

pub fn into<S>(self) -> DoubleEncoded<S>

pub fn from<S>(e: DoubleEncoded<S>) -> Self

pub fn as_ref(&self) -> Option<&T>

Provides an API similar to AsRef that provides access to the inner value. AsRef implementation would expect an &Option<T> return type.

impl<T: Decode> DoubleEncoded<T>

pub fn ensure_decoded(&mut self) -> Result<&T, ()>

Decode the inner encoded value and store it. Returns a reference to the value in case of success and Err(()) in case the decoding fails.

pub fn take_decoded(&mut self) -> Result<T, ()>

Move the decoded value out or (if not present) decode encoded.

pub fn try_into(self) -> Result<T, ()>

Provides an API similar to TryInto that allows fallible conversion to the inner value type. TryInto implementation would collide with std blanket implementation based on TryFrom.

Trait Implementations

impl<T> Clone for DoubleEncoded<T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Debug for DoubleEncoded<T>

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

Formats the value using the given formatter.

impl<T> Decode for DoubleEncoded<T>

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy ) -> Result<Self, Error>

Attempt to deserialise the value from input.

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.

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

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<T> Encode for DoubleEncoded<T>

fn size_hint(&self) -> usize

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

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy )

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

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

Convert self to an owned vector.

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

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

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<T> From<Vec<u8>> for DoubleEncoded<T>

fn from(encoded: Vec<u8>) -> Self

Converts to this type from the input type.

impl<T> PartialEq for DoubleEncoded<T>

fn eq(&self, other: &Self) -> bool

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

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> TypeInfo for DoubleEncoded<T>

where T: 'static,

type Identity = DoubleEncoded<T>

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl<T> EncodeLike for DoubleEncoded<T>

impl<T> Eq for DoubleEncoded<T>