C# State.To方法代码示例

		public static void Run () {
			var model = new StateMachine<Instance>("model");
			var initial = new PseudoState<Instance>("initial", model, PseudoStateKind.Initial);
			var target = new State<Instance>("state", model).Entry(i => i.Int1++).Exit(i => i.Int2++);

			initial.To(target);

			target.To().When<string>(m => m == "internal").Effect(i => i.Int3++);
			target.To(target).When<string>(m => m == "external").Effect(i => i.Int3++);

			var instance = new Instance("internal");

			model.Validate();

			model.Initialise(instance);

			model.Evaluate(instance, "internal");

			Trace.Assert(target == instance.GetCurrent(model.DefaultRegion));
			Trace.Assert(1 == instance.Int1);
			Trace.Assert(0 == instance.Int2);
			Trace.Assert(1 == instance.Int3);

			model.Evaluate(instance, "external");

			Trace.Assert(target == instance.GetCurrent(model.DefaultRegion));
			Trace.Assert(2 == instance.Int1);
			Trace.Assert(1 == instance.Int2);
			Trace.Assert(2 == instance.Int3);
		}

		public static void Run () {
			var model = new StateMachine<Instance>("compTest");
			var initial = new PseudoState<Instance>("initial", model, PseudoStateKind.Initial);

			var activity1 = new State<Instance>("activity1", model);
			var activity2 = new State<Instance>("activity2", model);
			var activity3 = new State<Instance>("activity3", model);
			var junction1 = new PseudoState<Instance>("junction1", model, PseudoStateKind.Junction);
			var junction2 = new PseudoState<Instance>("junction2", model, PseudoStateKind.Junction);
			var end = new FinalState<Instance>("end", model);

			var subInitial = new PseudoState<Instance>("subInitial", activity2, PseudoStateKind.Initial);
			var subEnd = new FinalState<Instance>("subEnd", activity2);

			subInitial.To(subEnd);
			initial.To(activity1);
			activity1.To(activity2);
			activity2.To(junction1);
			junction1.To(junction2).Else();
			junction2.To(activity3).Else();
			activity3.To(end);

			model.Validate();

			var instance = new Instance("transitions");
			model.Initialise(instance);

			Trace.Assert(model.IsComplete(instance));
		}

		public static void Run () {
			var model = new StateMachine<Instance>("history");

			var initial = new PseudoState<Instance>("initial", model, PseudoStateKind.Initial);
			var shallow = new State<Instance>("shallow", model);
			var deep = new State<Instance>("deep", model);
			var end = new FinalState<Instance>("final", model);

			var s1 = new State<Instance>("s1", shallow);
			var s2 = new State<Instance>("s2", shallow);

			initial.To(shallow);
			new PseudoState<Instance>("shallow", shallow, PseudoStateKind.ShallowHistory).To(s1);
			s1.To(s2).When<string>(c => c == "move");
			shallow.To(deep).When<string>(c => c == "go deep");
			deep.To(shallow).When<string>(c => c == "go shallow");
			s2.To(end).When<string>(c => c == "end");

			model.Validate();

			var instance = new Instance("history");

			model.Initialise(instance);

			model.Evaluate(instance, "move");
			model.Evaluate(instance, "go deep");
			model.Evaluate(instance, "go shallow");
			model.Evaluate(instance, "end");

			Trace.Assert(model.IsComplete(instance));
		}

		public static void Run () {
			var model = new StateMachine<Instance>("model");
			var initial = new PseudoState<Instance>("initial", model, PseudoStateKind.Initial);
			var state1 = new State<Instance>("state1", model);
			var state2 = new State<Instance>("state2", model);

			var regionA = new Region<Instance>("regionA", state1);
			var initialA = new PseudoState<Instance>("initialA", regionA, PseudoStateKind.Initial);
			var state3 = new State<Instance>("state3", regionA);
			var state8 = new State<Instance>("state8", regionA);

			var regionB = new Region<Instance>("regionB", state1);
			var initialB = new PseudoState<Instance>("initialB", regionB, PseudoStateKind.Initial);
			var state4 = new State<Instance>("state4", regionB);
			var state5 = new State<Instance>("state5", regionB);

			var regionBa = new Region<Instance>("regionBa", state4);
			var initialBa = new PseudoState<Instance>("initialBa", regionBa, PseudoStateKind.Initial);
			var state6 = new State<Instance>("state6", regionBa);

			var regionBb = new Region<Instance>("regionBb", state4);
			var initialBb = new PseudoState<Instance>("initialBb", regionBb, PseudoStateKind.Initial);
			var state7 = new State<Instance>("state7", regionBb);

			initial.To(state1);
			initialA.To(state3);
			initialB.To(state4);
			initialBa.To(state6);
			initialBb.To(state7);

			state3.To(state2).When<string>(c => c == "event2");
			state3.To(state8).When<string>(c => c == "event1");
			state7.To(state5).When<string>(c => c == "event2");
			state7.To(state5).When<string>(c => c == "event1");

			model.Validate();

			var instance = new Instance("p3pp3r");
			model.Initialise(instance);

			model.Evaluate(instance, "event2");

			Trace.Assert(state2 == instance.GetCurrent(model.DefaultRegion), instance.GetCurrent(model.DefaultRegion).ToString() );
			Trace.Assert(state4 == instance.GetCurrent(regionB));
		}

        public static List<State<string>> DocumentStates()
        {
            var draft = new State<string>("draft");
            var pending = new State<string>("pending");
            var approved = new State<string>("approved");
            var deleted = new State<string>("deleted");
            var archived = new State<string>("archived");

            draft.To(pending).On("send-to-approval");
            draft.To(deleted).On("delete");

            pending.To(approved).On("approve");
            pending.To(deleted).On("delete");
            //pending.To(draft).On("reject");

            approved.To(archived).On("archive");

            archived.To(deleted).On("delete");
            archived.To(approved).On("unarchive");

            return new List<State<string>> { draft, pending, approved, deleted, archived };
        }

		public static void Run () {
			// create the state machine model elements
			var model = new StateMachine<Instance>("model");
			var initial = new PseudoState<Instance>("initial", model, PseudoStateKind.Initial);
			var stateA = new State<Instance>("stateA", model);
			var stateB = new State<Instance>("stateB", model).Exit(i => i.Int1++);

			var bInitial = new PseudoState<Instance>("bInitial", stateB);
			var bStateI = new State<Instance>("bStateI", stateB);
			var bStateII = new State<Instance>("bStateII", stateB);

			// create the state machine model transitions
			initial.To(stateA);
			stateA.To(stateB).When<string>(message => message == "move");

			bInitial.To(bStateI);

			stateB.To(bStateII, TransitionKind.Local).When<string>(message => message == "local");
			stateB.To(bStateII, TransitionKind.External).When<string>(message => message == "external");
			model.Validate();

			// create a state machine instance
			var instance = new Instance("local");

			// initialise the model and instance
			model.Initialise(instance);

			// send the machine instance a message for evaluation, this will trigger the transition from stateA to stateB
			model.Evaluate(instance, "move");

			model.Evaluate(instance, "local");

			Trace.Assert(0 == instance.Int1);

			model.Evaluate(instance, "external");

			Trace.Assert(1 == instance.Int1);
		}

        public static List<State<string>> BabyStates()
        {
            var happy = new State<string>("happy");
            var unhappy = new State<string>("unhappy");
            var hungry = new State<string>("hungry");
            var teething = new State<string>("teething");
            var sleepy = new State<string>("sleepy");
            var sleeping = new State<string>("sleeping");
            var diaper = new State<string>("diaperchange");

            happy.To(happy).On("tickle").Do(() => Console.WriteLine("Giggle"));
            happy.To(hungry).On("hungry");
            happy.To(sleepy).On("sleepy");
            happy.To(diaper).On("poo");
            happy.To(teething).On("tooth");

            unhappy.To(happy).On(s => new[] { "tickle", "rattle", "milk" }.Contains(s));
            unhappy.To(unhappy).On(s => !(new[] { "tickle", "rattle", "milk" }.Contains(s)));

            hungry.To(happy).On("milk");
            hungry.To(hungry).On("lullaby");

            sleepy.To(sleepy).On("milk");
            sleepy.To(sleeping).On("lullaby");

            sleeping.To(unhappy).On("wake").Do(() => Console.WriteLine("Waaaaah! Wahaah!"));

            teething.To(sleepy).On("sleepy");
            teething.To(diaper).On("poo");
            teething.To(hungry).On("hungry");

            diaper.To(happy).On("change");
            diaper.To(diaper).On("lullaby");

            return new List<State<string>> { happy, unhappy, hungry, teething, sleepy, sleeping, diaper };
        }

        public static List<State<string>> SimpleBabyStates()
        {
            var happy = new State<string>("nappy");
            var screaming = new State<string>("screaming");
            var sleeping = new State<string>("sleeping");
            var diaper = new State<string>("diaperchange");

            happy.To(happy).On("tickle").Do(() => Console.WriteLine("Giggle!"));
            happy.To(screaming).On("hungry").Do(() => Console.WriteLine("Waah!"));
            //happy.To(screaming).On("sleepy");
            happy.To(diaper).On("poo").Do(() => Console.WriteLine("..."), () => { throw new Exception(); });

            screaming.To(sleeping).On("lullaby");
            //screaming.To(sleeping).On("milk");
            screaming.To(happy).On("rattle");

            sleeping.To(screaming).On("wake").Do(() => Console.WriteLine("Waaaaah! Wahaah!"));

            diaper.To(happy).On("change");
            diaper.To(screaming).On("lullaby");
            //diaper.To(screaming).On("rattle");

            return new List<State<string>> { happy, screaming, sleeping, diaper };
        }

		public static void Run () {

			var model = new StateMachine<Instance>("model");
			var initial = new PseudoState<Instance>("initial", model, PseudoStateKind.Initial);
			var stateA = new State<Instance>("stateA", model);
			var choice = new PseudoState<Instance>("choice", model, PseudoStateKind.Choice);

			initial.To(stateA);

			stateA.To(choice).When<string>(message => message == "choose");

			choice.To(stateA).Effect(instance => instance.Int1++);
			choice.To(stateA).Effect(instance => instance.Int2++);
			choice.To(stateA).Effect(instance => instance.Int3++);

			model.Validate();

			var instance1 = new Instance("instance1");

			model.Initialise(instance1);

			for (var i = 0; i < 99; i++) {
				model.Evaluate(instance1, "choose");
			}

			Trace.Assert(99 == (instance1.Int1 + instance1.Int2 + instance1.Int3));

			Runtime.Extensions.RandomSelector = randRobin;

			var instance2 = new Instance("instance2");

			model.Initialise(instance2);

			for (var i = 0; i < 99; i++) {
				model.Evaluate(instance2, "choose");
			}

			model.Evaluate(instance2, "end");

			Trace.Assert(33 == instance2.Int1);
			Trace.Assert(33 == instance2.Int2);
			Trace.Assert(33 == instance2.Int3);
		}

		public static void Run () {
			var model = new StateMachine<Instance>("model");
			var initial = new PseudoState<Instance>("initial", model);
			var stateA = new State<Instance>("stateA", model);
			var terminate = new PseudoState<Instance>("terminate", model, PseudoStateKind.Terminate);

			initial.To(stateA);
			stateA.To(terminate).When<string>(message => message == "1");

			model.Validate();

			var instance = new Instance("terminate");

			model.Initialise(instance);

			Trace.Assert(!model.Evaluate(instance, "2"));
			Trace.Assert(model.Evaluate(instance, "1"));
			Trace.Assert(!model.Evaluate(instance, "1"));
			Trace.Assert(instance.IsTerminated);
		}

		public static void Run () {
			var model = new StateMachine<Instance>("model");
			var initial = new PseudoState<Instance>("initial", model, PseudoStateKind.Initial);
			var stateA = new State<Instance>("stateA", model).Exit(i => i.Int1 += 1);
			var stateB = new State<Instance>("stateB", model).Entry(i => i.Int1 += 2);

			initial.To(stateA);
			stateA.To(stateB).When<string>(message => message == "move").Effect(i => i.Int1 += 4);

			model.Validate();

			var instance = new Instance("callbacks");

			model.Initialise(instance);

			model.Evaluate(instance, "move");

			Trace.Assert(1 == (1 & instance.Int1));
			Trace.Assert(2 == (2 & instance.Int1));
			Trace.Assert(4 == (4 & instance.Int1));
		}

		public static void Run () {

			var model = new StateMachine<Instance>("model");
			var initial1 = new PseudoState<Instance>("initial", model, PseudoStateKind.Initial);
			var myComposite1 = new State<Instance>("composite1", model);
			var state3 = new State<Instance>("state3", model);
			var initial2 = new PseudoState<Instance>("initial", myComposite1, PseudoStateKind.Initial);
			var state1 = new State<Instance>("state1", myComposite1);
			var state2 = new State<Instance>("state2", myComposite1);

			initial1.To(myComposite1);
			initial2.To(state1);
			myComposite1.To(state3).When<string>(c => c == "a");
			state1.To(state2).When<string>(c => c == "a");

			model.Validate();

			var instance = new Instance("brice");
			model.Initialise(instance);

			model.Evaluate(instance, "a");

			Trace.Assert(instance.GetCurrent(myComposite1.DefaultRegion) == state2);
		}

        public static List<State<string>> MoodStates()
        {
            var neutral = new State<string>("neutral");
            var drunk = new State<string>("drunk");
            var happy = new State<string>("happy");
            var moody = new State<string>("moody");
            var angry = new State<string>("angry");

            neutral.To(happy).On("tickle");
            neutral.To(moody).On("hassle");
            neutral.To(drunk).On(s => s.Contains("beer"));

            moody.To(angry).On("tickle");
            moody.To(neutral).On(s => s.Contains("beer"));

            happy.To(neutral).On(s => "hassle".Equals(s));

            return new List<State<string>> { neutral, moody, happy, angry, drunk };
        }

		public static void Run () {
			var model = new StateMachine<Instance>("model");

			var initial = new PseudoState<Instance>("initial", model, PseudoStateKind.Initial);
			var ortho = new State<Instance>("ortho", model);
			var simple = new State<Instance>("simple", model);
			var final = new FinalState<Instance>("final", model);

			var r1 = new Region<Instance>("r1", ortho);
			var r2 = new Region<Instance>("r2", ortho);

			var i1 = new PseudoState<Instance>("initial", r1, PseudoStateKind.ShallowHistory);
			var i2 = new PseudoState<Instance>("initial", r2, PseudoStateKind.ShallowHistory);

			var s1 = new State<Instance>("s1", r1);
			var s2 = new State<Instance>("s2", r2);

			var f1 = new FinalState<Instance>("f1", r1);
			var f2 = new FinalState<Instance>("f2", r2);

			initial.To(ortho);

			i1.To(s1);
			i2.To(s2);

			ortho.To(final); // This should happen once all regions in ortho are complete?

			s1.To(f1).When<string>(c => c == "complete1");
			s2.To(f2).When<string>(c => c == "complete2");

			ortho.To(simple).When<string>(c => c == "jump");
			simple.To(ortho).When<string>(c => c == "back");

			model.Validate();

			var instance = new Instance("muximise");
			model.Initialise(instance);
			/*
console.log("simple.isSimple = " + simple.isSimple());
console.log("simple.isComposite = " + simple.isComposite());
console.log("simple.isOrthogonal = " + simple.isOrthogonal());

console.log("model.isSimple = " + model.isSimple());
console.log("model.isComposite = " + model.isComposite());
console.log("model.isOrthogonal = " + model.isOrthogonal());

console.log("ortho.isSimple = " + ortho.isSimple());
console.log("ortho.isComposite = " + ortho.isComposite());
console.log("ortho.isOrthogonal = " + ortho.isOrthogonal());
*/

			Trace.Assert(simple.IsSimple);
			Trace.Assert(!model.IsSimple);
			Trace.Assert(!ortho.IsSimple);

			Trace.Assert(!simple.IsComposite);
			Trace.Assert(model.IsComposite);
			Trace.Assert(ortho.IsComposite);

			Trace.Assert(!simple.IsOrthogonal);
			Trace.Assert(!model.IsOrthogonal);
			Trace.Assert(ortho.IsOrthogonal);

			model.Evaluate(instance, "complete1");
			model.Evaluate(instance, "complete2");

			Trace.Assert(model.IsComplete(instance));
		}