Class: Listen::FSM::State

Inherits:
Object
  • Object
show all
Defined in:
lib/listen/fsm.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, transitions, &block) ⇒ State

Returns a new instance of State.


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# File 'lib/listen/fsm.rb', line 115

def initialize(name, transitions, &block)
  @name = name
  @block = block
  @transitions = if transitions
    Array(transitions).map(&:to_sym)
  end
end

Instance Attribute Details

#nameObject (readonly)

Returns the value of attribute name


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# File 'lib/listen/fsm.rb', line 113

def name
  @name
end

#transitionsObject (readonly)

Returns the value of attribute transitions


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# File 'lib/listen/fsm.rb', line 113

def transitions
  @transitions
end

Instance Method Details

#call(obj) ⇒ Object


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# File 'lib/listen/fsm.rb', line 123

def call(obj)
  obj.instance_eval(&@block) if @block
end

#valid_transition?(new_state) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/listen/fsm.rb', line 127

def valid_transition?(new_state)
  # All transitions are allowed if none are expressly declared
  !@transitions || @transitions.include?(new_state.to_sym)
end