Module: Driskell::Listen::FSM::ClassMethods

Defined in:
lib/driskell-listen/fsm.rb

Instance Method Summary collapse

Instance Method Details

#default_state(new_default = nil) ⇒ Object

Obtain or set the default state Passing a state name sets the default state



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# File 'lib/driskell-listen/fsm.rb', line 14

def default_state(new_default = nil)
  if new_default
    @default_state = new_default.to_sym
  else
    defined?(@default_state) ? @default_state : DEFAULT_STATE
  end
end

#state(*args, &block) ⇒ Object

Declare an FSM state and optionally provide a callback block to fire Options:

  • to: a state or array of states this state can transition to



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# File 'lib/driskell-listen/fsm.rb', line 30

def state(*args, &block)
  if args.last.is_a? Hash
    # Stringify keys :/
    options = args.pop.each_with_object({}) { |(k, v), h| h[k.to_s] = v }
  else
    options = {}
  end

  args.each do |name|
    name = name.to_sym
    default_state name if options['default']
    states[name] = State.new(name, options['to'], &block)
  end
end

#states ⇒ Object

Obtain the valid states for this FSM



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# File 'lib/driskell-listen/fsm.rb', line 23

def states
  @states ||= {}
end