Struct EventCommitment 

pub struct EventCommitment {
    pub checkpoint_seq: u64,
    pub transaction_idx: u64,
    pub event_idx: u64,
    pub digest: Digest,
}

Available on crate feature unstable only.

A commitment to a single event for inclusion in an authenticated event stream’s Merkle Mountain Range.

Each leaf of the per-checkpoint merkle tree is the BCS encoding of this struct. The four fields together identify the event’s position in the ledger and bind it to its content:

• checkpoint_seq: the checkpoint containing the emitting transaction.
• transaction_idx: the emitting transaction’s 0-based index within its checkpoint (user transactions are numbered first, settlement transactions continue the same sequence).
• event_idx: the event’s 0-based index within its transaction’s event list.
• digest: the per-event digest, BLAKE2b-256(BCS of Event)`.

Ordering is lexicographic over (checkpoint_seq, transaction_idx, event_idx) only; the per-event digest is not part of the comparison since the positional tuple already uniquely identifies an event.

Mirrors sui::accumulator_settlement::EventCommitment on the Move side.

BCS

event-commitment = u64 u64 u64 digest

Fields

checkpoint_seq: u64

transaction_idx: u64

event_idx: u64

digest: Digest

Trait Implementations

impl Clone for EventCommitment

fn clone(&self) -> EventCommitment

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EventCommitment

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EventCommitment

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for EventCommitment

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 Ord for EventCommitment

fn cmp(&self, other: &Self) -> 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 EventCommitment

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

fn partial_cmp(&self, other: &Self) -> 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 EventCommitment

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for EventCommitment

impl Eq for EventCommitment

impl StructuralPartialEq for EventCommitment