func transitionToRunning()

in MobiusCore/Source/AsyncStartStopStateMachine.swift [85:102]

• 18 lines of code
• 4 McCabe index (conditional complexity)

    func transitionToRunning(by transition: (StoppedState) throws -> RunningState) throws {
        dispatchPrecondition(condition: .notOnQueue(queue))
        try queue.sync {
            switch snapshot() {
            case .running:
                throw Error.wrongState
            case .stopped(let stoppedState):
                rawState.value = .transitioningToRunning
                do {
                    let runningState = try transition(stoppedState)
                    become(running: runningState)
                } catch {
                    rawState.value = .stopped
                    throw error
                }
            }
        }
    }