Beispiel #1
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// Entry() is part of the interface State.
// It would be called on state entry.
func (self *CodeState) Entry(sm hsm.HSM, event hsm.Event) hsm.State {
	Logln(self.ID(), "- Entry")
	hsm.AssertEqual(event.Type(), hsm.EventEntry)
	hsm.AssertTrue(self.entryCount >= self.initCount)
	self.entryCount++
	return nil
}
Beispiel #2
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// Handle() is part of the interface State.
// It would be called with input events.
// Please refer to the state chart for all state transfers and
// actions round them.
func (self *CodeState) Handle(sm hsm.HSM, event hsm.Event) hsm.State {
	Logln(self.ID(), "- Handle")
	switch event.Type() {
	case EventSlash:
		// Trigger a state transfer. The target state is slash state.
		sm.QTranOnEvent(StateSlashID, event)
		// Return nil to tell the state machine that this event is completely
		// handled. No need to propagrate it to our super state.
		return nil
	case EventChar:
		e, ok := event.(*CCommentCharEvent)
		hsm.AssertTrue(ok)
		commentHSM, ok := sm.(*CCommentHSM)
		hsm.AssertTrue(ok)
		commentHSM.ProcessCodeChar(e.Char())
		return nil
	}
	// Return super state to tell the state machine that this event is
	// not completely handled. Please propagrate it to our super state.
	return self.Super()
}
Beispiel #3
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// Init() is part of the interface State.
// It would be called on state initialization.
func (self *CodeState) Init(sm hsm.HSM, event hsm.Event) hsm.State {
	Logln(self.ID(), "- Init")
	hsm.AssertEqual(event.Type(), hsm.EventInit)
	hsm.AssertTrue(self.entryCount >= self.initCount)
	self.initCount++
	// Return super state in Init() to tell state machine that
	// this state doesn't has state needed to be initialized.
	// If QInit() is called(there is a state/sub-state needed to be
	// initialized), then return nil.
	// QTran() is not suitable to call in Init(), only QInit() could
	// be used.
	return self.Super()
}
Beispiel #4
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func (self *SlashState) Handle(sm hsm.HSM, event hsm.Event) hsm.State {
	Logln(self.ID(), "- Handle")
	switch event.Type() {
	case EventChar:
		fallthrough
	case EventSlash:
		e, ok := event.(CCommentEvent)
		hsm.AssertTrue(ok)
		commentHSM, ok := sm.(*CCommentHSM)
		hsm.AssertTrue(ok)
		// Record a slash char and e.Char() before calling QTran() to
		// trigger a state transfer, since both Entry and Exit of this state
		// are not good places for these codes.
		commentHSM.ProcessCodeChar('/')
		commentHSM.ProcessCodeChar(e.Char())
		sm.QTran(StateCodeID)
		return nil
	case EventStar:
		sm.QTran(StateCommentID)
		return nil
	}
	return self.Super()
}
Beispiel #5
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func (self *S11State) Handle(sm hsm.HSM, event hsm.Event) hsm.State {
	Logln(self.ID(), "- Handle e =", PrintEvent(event.Type()))
	switch event.Type() {
	case EventG:
		sm.QTran(StateS211ID)
		return nil
	case EventH:
		annotatedHSM, ok := sm.(*AnnotatedHSM)
		hsm.AssertTrue(ok)
		if annotatedHSM.GetFoo() {
			annotatedHSM.SetFoo(false)
			return nil
		}
	}
	return self.Super()
}