Struct Hash

pub struct Hash(/* private fields */);

The default environment Hash type.

Note

This is a mirror of the Hash type used in the default configuration of PALLET contracts.

Trait Implementations

impl AsMut<[u8]> for Hash

fn as_mut(&mut self) -> &mut [u8]

Converts this type into a mutable reference of the (usually inferred) input type.

impl AsRef<[u8]> for Hash

fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.

impl Clear for Hash

const CLEAR_HASH: Hash = _

The clear hash.

fn is_clear(&self) -> bool

Returns true if the hash is clear.

impl Clone for Hash

fn clone(&self) -> Hash

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Hash

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

Formats the value using the given formatter.

impl Decode for Hash

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

where __CodecInputEdqy: Input,

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 DecodeAsFields for Hash

fn decode_as_fields<R, 'info>( input: &mut &[u8], fields: &mut dyn FieldIter<'info, <R as TypeResolver>::TypeId, Item = Field<'info, <R as TypeResolver>::TypeId>>, types: &'info R, ) -> Result<Hash, Error>

where R: TypeResolver,

Given some bytes and some fields denoting their structure, attempt to decode.

impl Default for Hash

fn default() -> Hash

Returns the “default value” for a type.

impl Encode for Hash

fn size_hint(&self) -> usize

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

fn encode_to<__CodecOutputEdqy>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

where __CodecOutputEdqy: Output + ?Sized,

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>( &self, f: __CodecUsingEncodedCallback, ) -> __CodecOutputReturn

where __CodecUsingEncodedCallback: FnOnce(&[u8]) -> __CodecOutputReturn,

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

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl EncodeAsFields for Hash

fn encode_as_fields_to<ScaleEncodeResolver>( &self, __encode_as_type_fields: &mut dyn FieldIter<'_, <ScaleEncodeResolver as TypeResolver>::TypeId, Item = Field<'_, <ScaleEncodeResolver as TypeResolver>::TypeId>>, __encode_as_type_types: &ScaleEncodeResolver, __encode_as_type_out: &mut Vec<u8>, ) -> Result<(), Error>

where ScaleEncodeResolver: TypeResolver,

Given some fields describing the shape of a type, attempt to encode to that shape.

fn encode_as_fields<R>( &self, fields: &mut dyn FieldIter<'_, <R as TypeResolver>::TypeId, Item = Field<'_, <R as TypeResolver>::TypeId>>, types: &R, ) -> Result<Vec<u8>, Error>

where R: TypeResolver,

This is a helper function which internally calls [EncodeAsFields::encode_as_fields_to]. Prefer to implement that instead.

impl EncodeAsType for Hash

fn encode_as_type_to<ScaleEncodeResolver>( &self, __encode_as_type_type_id: <ScaleEncodeResolver as TypeResolver>::TypeId, __encode_as_type_types: &ScaleEncodeResolver, __encode_as_type_out: &mut Vec<u8>, ) -> Result<(), Error>

where ScaleEncodeResolver: TypeResolver,

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 From<[u8; 32]> for Hash

fn from(value: [u8; 32]) -> Hash

Converts to this type from the input type.

impl Hash for Hash

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

where __H: Hasher,

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 IntoVisitor for Hash

type AnyVisitor<ScaleDecodeTypeResolver: TypeResolver> = Visitor<ScaleDecodeTypeResolver>

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

fn into_visitor<ScaleDecodeTypeResolver>() -> <Hash as IntoVisitor>::AnyVisitor<ScaleDecodeTypeResolver>

where ScaleDecodeTypeResolver: TypeResolver,

A means of obtaining this visitor.

impl MaxEncodedLen for Hash

fn max_encoded_len() -> usize

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

impl Ord for Hash

fn cmp(&self, other: &Hash) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Hash

fn eq(&self, other: &Hash) -> 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 PartialOrd for Hash

fn partial_cmp(&self, other: &Hash) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StorageLayout for Hash

fn layout(key: &u32) -> Layout

Returns the static storage layout of Self.

impl<'a> TryFrom<&'a [u8]> for Hash

type Error = TryFromSliceError

The type returned in the event of a conversion error.

fn try_from(bytes: &'a [u8]) -> Result<Hash, TryFromSliceError>

Performs the conversion.

impl TypeInfo for Hash

type Identity = Hash

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl Copy for Hash

impl EncodeLike for Hash

impl Eq for Hash

impl StructuralPartialEq for Hash