def operand_count
import cli@0.2.0.0/cli.bend as Cliimport Base
5979def operand_count(events: List<&2, ScanEvent>, count: Nat) -> Nat:
5980 match events:
5981 case Nil{}: count
5982 case Enter{name} <> tail: operand_count(tail, 0n)
5983 case Operand{token} <> tail: operand_count(tail, (count + 1n : Nat))
5984 case event <> tail: operand_count(tail, count)