Enum StorageValue 

pub enum StorageValue {
    Take {
        size: u32,
        bound: Option<OwnedRow>,
    },
    Bound(OwnedRow),
    Cap {
        size: u32,
        pks: Vec<Box<str>>,
    },
    Reduce {
        count: i64,
        accs: Vec<ReduceAcc>,
    },
}

The value stored in operator scratch state. A tight enum, not generic JSON: the only writers are Take and Cap (spec 10 §1.3), and their payloads are known. This (a) keeps serde_json out of the wasm client, (b) makes every value a flat, cheaply-clonable struct instead of a heap JSON tree, and (c) gives operators type-safe state instead of the JS storage as TakeStorage casts (take.ts:78).

No PartialEq. It carries OwnedRows (crate::value::OwnedValue deliberately has no PartialEq — you must choose compare_values vs values_equal), so comparison is spelled out where needed (tests compare via compare_values, mirroring graph::CollectedChange).

Borrowed and owned forms coincide for this enum (no &str fields — bound is already an OwnedRow, pks are Box<str>), so OwnedStorageValue is just an alias; it leaves room for a future borrowed set form (spec 10 §4.2).

Variants

Take

take.ts TakeState: a count + an optional boundary row. bound is an OwnedRow because it outlives the cursor that produced it (foundations §3.3 — operator-buffered state).

Fields

size: u32

bound: Option<OwnedRow>

Bound(OwnedRow)

take.ts MAX_BOUND_KEY slot: a bare boundary row.

Cap

cap.ts CapState: a count + the membership pk-set (each pk pre-serialized to a string exactly as JS serializePK, cap.ts:315).

Fields

size: u32

pks: Vec<Box<str>>

Reduce

op/reduce.rs accumulator (REDUCE-DESIGN.md §5). count is the running row count backing count(*) (birth/death is driven by it, NULLs included). accs holds one ReduceAcc per Sum/Avg aggregate in output-column order (empty for a plain count), so a Remove never re-reads the inputs.

Fields

count: i64

accs: Vec<ReduceAcc>

Trait Implementations

impl Clone for StorageValue

fn clone(&self) -> StorageValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StorageValue

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

Formats the value using the given formatter.