Struct WrapperKeepOpaque 

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

A wrapper for any type T which implement encode/decode in a way compatible with Vec<u8>. WrapperKeepOpaque stores the type only in its opaque format, aka as a Vec<u8>. To access the real type T Self::try_decode needs to be used.

Implementations

impl<T> WrapperKeepOpaque<T>

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

where T: Decode,

Try to decode the wrapped type from the inner data.

Returns None if the decoding failed.

pub fn encoded_len(&self) -> usize

Returns the length of the encoded T.

pub fn encoded(&self) -> &[u8]

Returns the encoded data.

pub fn from_encoded(data: Vec<u8>) -> Self

Create from the given encoded data.

pub fn from_value(value: T) -> Self

where T: Encode,

Create from some raw value by encoding it.

Trait Implementations

impl<T> Clone for WrapperKeepOpaque<T>

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 for WrapperKeepOpaque<T>

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

Formats the value using the given formatter.

impl<T> Decode for WrapperKeepOpaque<T>

where PhantomDataSendSync<T>: Decode,

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> Default for WrapperKeepOpaque<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T> Encode for WrapperKeepOpaque<T>

where PhantomDataSendSync<T>: Encode,

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<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.

impl<T> EncodeAsType for WrapperKeepOpaque<T>

fn encode_as_type_to<R: TypeResolver>( &self, type_id: R::TypeId, types: &R, out: &mut Vec<u8>, ) -> Result<(), Error>

Given some type_id, types, a context and some output target for the SCALE encoded bytes, attempt to SCALE encode the current value into the type given by type_id.

fn encode_as_type<R>( &self, type_id: <R as TypeResolver>::TypeId, types: &R, ) -> Result<Vec<u8>, Error>

where R: TypeResolver,

This is a helper function which internally calls EncodeAsType::encode_as_type_to. Prefer to implement that instead.

impl<T> Hash for WrapperKeepOpaque<T>

fn hash<__H: Hasher>(&self, __state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T> IntoVisitor for WrapperKeepOpaque<T>

type AnyVisitor<R: TypeResolver> = WrapperKeepOpaqueVisitor<T, R>

The visitor type used to decode SCALE encoded bytes to Self.

fn into_visitor<R: TypeResolver>() -> WrapperKeepOpaqueVisitor<T, R>

A means of obtaining this visitor.

impl<T> PartialEq for WrapperKeepOpaque<T>

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl<T> EncodeLike for WrapperKeepOpaque<T>

where PhantomDataSendSync<T>: Encode,

impl<T> Eq for WrapperKeepOpaque<T>