coderyi / StateMachineSwift

StateMachineSwift, state machine library for Swift, supports an arbitrary number of States and Events.

StateMachineSwift, supports an arbitrary number of States and Events.

CocoaPods

pod 'StateMachineSwift'

Features

• Supports an arbitrary number of States and Events.
• States and Events support a thorough set of callbacks for responding to state transitions.
• Transitions support the inclusion of arbitrary user data via a userInfo dictionary, making it easy to broadcast metadata across callbacks.
• Lightweight.

Example

let orderStateMachine: SMStateMachine = SMStateMachine()

let normal: SMState = SMState("normal")
let purchase: SMState = SMState("purchase")
let cancel: SMState = SMState("cancel")

orderStateMachine.addStates(arrayOfStates: [normal, purchase, cancel])
orderStateMachine.initialState = normal

let confirmOrder: SMEvent = SMEvent("confirmOrder", sourceStates: [normal], destinationState: purchase)
let cancelOrder: SMEvent = SMEvent("cancelOrder", sourceStates: [purchase, normal], destinationState: cancel)

orderStateMachine.addEvents(arrayOfEvents: [confirmOrder, cancelOrder])

orderStateMachine.activate()
orderStateMachine.isInState("normal")

let userInfo = ["hello": "world"]
orderStateMachine.fireEvent(eventName: "confirmOrder", userInfo: userInfo)
orderStateMachine.fireEvent(eventName: "cancelOrder", userInfo: userInfo)

License

Released under MIT License.