mno_fsm

Description:

mno fsm

A library for finite state machine realization in Dart. Inspired by Tinder StateMachine library.
This library is a fork base on https://github.com/ookami-kb/fsm.
Usage #
A simple usage example (using dfunc library for generating sealed classes):
import 'package:dfunc/dfunc.dart';
import 'package:mno_fsm/fsm.dart';

part 'fsm_example.g.dart';

void main() {
final machine = StateMachine<State, Event, SideEffect>.create((g) => g
..initialState(Solid())
..state<Solid>((b) => b
..on<OnMelted>(
(Solid s, OnMelted e) => b.transitionTo(Liquid(), LogMelted())))
..state<Liquid>((b) => b
..onEnter((s) => print('Entering ${s.runtimeType} state'))
..onExit((s) => print('Exiting ${s.runtimeType} state'))
..on<OnFroze>(
(Liquid s, OnFroze e) => b.transitionTo(Solid(), LogFrozen()))
..on<OnVaporized>(
(Liquid s, OnVaporized e) => b.transitionTo(Gas(), LogVaporized())))
..state<Gas>((b) => b
..on<OnCondensed>(
(Gas s, OnCondensed e) => b.transitionTo(Liquid(), LogCondensed())))
..onTransition((t) => t.match((v) => print(v.sideEffect), (_) {})));

print(machine.currentState is Solid); // TRUE

machine.transition(OnMelted());
print(machine.currentState is Liquid); // TRUE

machine.transition(OnFroze());
print(machine.currentState is Solid); // TRUE
}

@sealed
abstract class State with _$State {}

class Solid extends State {}

class Liquid extends State {}

class Gas extends State {}

@sealed
abstract class Event with _$Event {}

class OnMelted extends Event {}

class OnFroze extends Event {}

class OnVaporized extends Event {}

class OnCondensed extends Event {}

@sealed
abstract class SideEffect with _$SideEffect {}

class LogMelted extends SideEffect {}

class LogFrozen extends SideEffect {}

class LogVaporized extends SideEffect {}

class LogCondensed extends SideEffect {}
copied to clipboard
Features and bugs #
Please file feature requests and bugs at the issue tracker.