Struct ChangeMeta

pub struct ChangeMeta {
    pub lamport: Lamport,
    pub id: ID,
    pub timestamp: Timestamp,
    pub message: Option<Arc<str>>,
    pub deps: Frontiers,
    pub len: usize,
}

Change is a grouped continuous operations that share the same id, timestamp, commit message.

• The id of the Change is the id of its first op.
• The second op’s id is { peer: change.id.peer, counter: change.id.counter + 1 }

The same applies on Lamport:

• The lamport of the Change is the lamport of its first op.
• The second op’s lamport is change.lamport + 1

The length of the Change is how many operations it contains

Fields

lamport: Lamport

Lamport timestamp of the Change

id: ID

The first Op id of the Change

timestamp: Timestamp

Unix time It is the number of seconds that have elapsed since 00:00:00 UTC on 1 January 1970.

message: Option<Arc<str>>

The commit message of the change

deps: Frontiers

The dependencies of the first op of the change

len: usize

The total op num inside this change

Implementations

impl ChangeMeta

pub fn from_change(c: &Change) -> Self

pub fn message(&self) -> &str

Get the commit message in &str

Trait Implementations

impl Clone for ChangeMeta

fn clone(&self) -> ChangeMeta

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ChangeMeta

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

Formats the value using the given formatter.

impl HasLamport for ChangeMeta

fn lamport(&self) -> Lamport

impl HasLength for ChangeMeta

fn content_len(&self) -> usize

It is the length of the content, i.e. the length when no Mergable::merge ever happen.

fn atom_len(&self) -> usize

It is the length of the atom element underneath, i.e. the length when no Mergable::merge ever happen.

impl Ord for ChangeMeta

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 ChangeMeta

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 PartialOrd for ChangeMeta

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 Eq for ChangeMeta