Enum Boundary 

pub enum Boundary {
    SchemaChange(StoreVersion),
    Reset {
        entry: Slot,
        snapshot: SnapshotId,
    },
}

A checked raise/reset and the snapshot named by that entry. Its selection is derived from kept entries, independently of whether coverage has been read.

Variants

SchemaChange(StoreVersion)

A breaking schema raise.

Reset

A reset of the named snapshot’s audience.

Fields

entry: Slot

The reset’s counted slot.

snapshot: SnapshotId

Its snapshot, including the audience.

Implementations

impl Boundary

pub fn entry(&self) -> Slot

The checked entry that owns this boundary.

pub fn snapshot(&self) -> &SnapshotId

The immutable snapshot named by this boundary.

pub fn schema_in_place( state: &StoreState, version: u32, snapshot: &SnapshotId, ) -> bool

The no-op rule for a raise: one that doesn’t go past the version its audience has reached, a circle’s base included, changes nothing.

pub fn reset_in_place(state: &StoreState, snapshot: &SnapshotId) -> bool

Repeating the current reset does not introduce a new boundary.

pub fn already_in_place(&self, state: &StoreState) -> bool

Whether applying this checked boundary leaves the applied state unchanged.

pub fn apply(&self, state: &mut StoreState)

Realize a non-no-op boundary after the preceding prefix authorizes it.

Trait Implementations

impl Clone for Boundary

fn clone(&self) -> Boundary

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Boundary

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

Formats the value using the given formatter.

impl PartialEq for Boundary

fn eq(&self, other: &Boundary) -> 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 Eq for Boundary

impl StructuralPartialEq for Boundary