Function eval_arg_for_row

nodedb-query/src/window/value_eval.rs:161–178

(
    expr: &SqlExpr,
    row: &[Value],
    column_index: &HashMap<String, usize>,
)

// ── Argument evaluation (pub(super) for value_agg) ────────────────────────────

pub(super) fn eval_arg_for_row(
    expr: &SqlExpr,
    row: &[Value],
    column_index: &HashMap<String, usize>,
) -> Value {
    match expr {
        SqlExpr::Column(name) => column_index
            .get(name.as_str())
            .and_then(|&idx| row.get(idx))
            .cloned()
            .unwrap_or(Value::Null),
        SqlExpr::Literal(v) => v.clone(),
        other => {
            let doc = row_to_obj(row, column_index);
            other.eval(&doc)
        }
    }
}

fn row_to_obj(row: &[Value], column_index: &HashMap<String, usize>) -> Value {
    let mut map = HashMap::new();