Class: Stateless::Engine

Inherits:
Object
  • Object
show all
Defined in:
lib/stateless/engine.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(transitions) ⇒ Engine

Returns a new instance of Engine.



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# File 'lib/stateless/engine.rb', line 5

def initialize(transitions)
  @transitions = transitions
end

Instance Attribute Details

#transitions ⇒ Object (readonly)

Returns the value of attribute transitions.



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# File 'lib/stateless/engine.rb', line 3

def transitions
  @transitions
end

Instance Method Details

#can_transit_by_event?(from, event_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/stateless/engine.rb', line 18

def can_transit_by_event?(from, event_name)
  transitions.any? { |transition| target_transition_by_event?(transition, from, event_name) }
end

#can_transit_to_state?(from, to) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/stateless/engine.rb', line 9

def can_transit_to_state?(from, to)
  transitions.any? { |transition| target_transition_by_state?(transition, from, to) }
end

#transition_event(from, to) ⇒ Object 



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# File 'lib/stateless/engine.rb', line 13

def transition_event(from, to)
  transition = transitions.detect { |transition| target_transition_by_state?(transition, from, to) }
  transition&.event_name
end

#transition_state_by_event(from, event_name) ⇒ Object 



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# File 'lib/stateless/engine.rb', line 22

def transition_state_by_event(from, event_name)
  transition = transitions.detect { |transition| target_transition_by_event?(transition, from, event_name) }
  transition&.to
end