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 = nil, &block) ⇒ State

Returns a new instance of State.



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

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

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/listen/fsm.rb', line 111

def name
  @name
end

#transitions ⇒ Object (readonly)

Returns the value of attribute transitions.



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# File 'lib/listen/fsm.rb', line 111

def transitions
  @transitions
end

Instance Method Details

#call(obj) ⇒ Object 



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# File 'lib/listen/fsm.rb', line 119

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 123

def valid_transition?(new_state)
  # All transitions are allowed unless expressly
  return true unless @transitions

  @transitions.include? new_state.to_sym
end