Enum SourceReplayStability 

pub enum SourceReplayStability {
    Consumptive,
    StableByOrdinal,
}

Whether a source item can be reconstructed from its ordinal without consulting or advancing mutable source state.

The default is deliberately conservative. A forward-only cursor is not sufficient evidence that an earlier item is safe to render again.

Variants

Consumptive

Rendering is destructive, stateful, externally mutable, or otherwise not proven stable for repeated calls at one ordinal.

StableByOrdinal

render_item(ordinal) is pure, total, and byte-identical for the lifetime of the advertised source generation.

Trait Implementations

impl Clone for SourceReplayStability

fn clone(&self) -> SourceReplayStability

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SourceReplayStability

impl Debug for SourceReplayStability

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

Formats the value using the given formatter.

impl Default for SourceReplayStability

fn default() -> SourceReplayStability

Returns the “default value” for a type.

impl Eq for SourceReplayStability

impl PartialEq for SourceReplayStability

fn eq(&self, other: &SourceReplayStability) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SourceReplayStability