Enum ScanTerminal 

pub enum ScanTerminal {
    ScanLimit {
        watermark: Watermark,
    },
    NaturalRange {
        end: NaturalRangeEnd,
        position: Position,
        interval_empty: bool,
    },
    CursorBound {
        position: Position,
        kind: CursorKind,
    },
}

Variants

ScanLimit

Scan budget exhausted. Owns the mandatory authoritative frontier watermark (its cursor is always set by the frontier constructors).

Fields

watermark: Watermark

NaturalRange

The resolved interval is naturally exhausted at position.

Fields

end: NaturalRangeEnd

position: Position

interval_empty: bool

The resolved interval contained no scannable positions. Natural completion of an empty interval covered nothing, so its terminal claim stays unset (the proto contract keeps checkpoint unset until the scan’s first checkpoint is fully covered); the resume cursor is unaffected.

CursorBound

The caller-provided cursor bound truncates the interval at position.

Fields

position: Position

kind: CursorKind

Implementations

impl ScanTerminal

pub fn from_range_exhaustion( exhaustion: RangeExhaustion, position: Position, interval_empty: bool, ) -> Self

pub fn reason(&self) -> QueryEndReason

pub fn into_watermark( self, options: &QueryOptions, covered_checkpoint_bound: Option<u64>, ) -> Watermark

Render the trailing terminal frame’s watermark. Natural completion (LedgerTip/CheckpointBound) of a scanned interval claims the range’s final checkpoint via terminal_boundary_watermark and ignores covered_checkpoint_bound (the range claim is always at least as strong); an empty interval covered nothing and claims nothing. A cursor bound never claims its own checkpoint: its claim is exactly the accumulated item coverage.

Trait Implementations

impl Clone for ScanTerminal

fn clone(&self) -> ScanTerminal

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScanTerminal

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

Formats the value using the given formatter.

impl PartialEq for ScanTerminal

fn eq(&self, other: &ScanTerminal) -> 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 StructuralPartialEq for ScanTerminal