Struct ShardIndex

#[repr(C)]
pub struct ShardIndex(/* private fields */);

Shard index

Implementations

impl ShardIndex

pub const BEACON_CHAIN: Self

Beacon chain

pub const MAX_SHARD_INDEX: u32 = 1_048_575u32

Max possible shard index

pub const MAX_SHARDS: NonZeroU32

Max possible number of shards

pub const MAX_ADDRESSES_PER_SHARD: NonZeroU128

Max possible number of addresses per shard

pub const fn new(shard_index: u32) -> Option<Self>

Create shard index from u32.

Returns None if shard_index > ShardIndex::MAX_SHARD_INDEX

This is typically only necessary for low-level code.

pub const fn as_u32(self) -> u32

Convert shard index to u32.

This is typically only necessary for low-level code.

pub const fn is_beacon_chain(&self) -> bool

Whether the shard index corresponds to the beacon chain

pub const fn is_intermediate_shard(&self) -> bool

Whether the shard index corresponds to an intermediate shard

pub const fn is_leaf_shard(&self) -> bool

Whether the shard index corresponds to an intermediate shard

pub const fn is_phantom_shard(&self) -> bool

Whether the shard index corresponds to a phantom shard

pub const fn is_child_of(self, parent: Self) -> bool

Check if this shard is a child shard of parent

pub const fn shard_kind(&self) -> ShardKind

Get shard kind

Trait Implementations

impl Clone for ShardIndex

fn clone(&self) -> ShardIndex

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ShardIndex

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

Formats the value using the given formatter.

impl Decode for ShardIndex

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<'de> Deserialize<'de> for ShardIndex

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ShardIndex

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

Formats the value using the given formatter.

impl Encode for ShardIndex

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 Hash for ShardIndex

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 MaxEncodedLen for ShardIndex

fn max_encoded_len() -> usize

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

impl Ord for ShardIndex

fn cmp(&self, other: &ShardIndex) -> 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 ShardIndex

fn eq(&self, other: &ShardIndex) -> 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 ShardIndex

fn partial_cmp(&self, other: &ShardIndex) -> 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 Serialize for ShardIndex

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TrivialType for ShardIndex

where u32: TrivialType,

const METADATA: &[u8]

Data structure metadata in binary form, describing shape and types of the contents, see IoTypeMetadataKind for encoding details.

const SIZE: u32 = _

unsafe fn from_bytes(bytes: &[u8]) -> Option<&Self>

Create a reference to a type, which is represented by provided memory.

unsafe fn from_bytes_mut(bytes: &mut [u8]) -> Option<&mut Self>

Create a mutable reference to a type, which is represented by provided memory.

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

Access the underlying byte representation of a data structure

unsafe fn as_bytes_mut(&mut self) -> &mut [u8]

Access the underlying mutable byte representation of a data structure.

impl TypeInfo for ShardIndex

type Identity = ShardIndex

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl Copy for ShardIndex

impl EncodeLike for ShardIndex

impl Eq for ShardIndex

impl StructuralPartialEq for ShardIndex