Class: SteadyState::Attribute::State

Inherits:
SimpleDelegator
  • Object
show all
Defined in:
lib/steady_state/attribute/state.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(state_machine, current_value, last_valid_value) ⇒ State

Returns a new instance of State.



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# File 'lib/steady_state/attribute/state.rb', line 6

def initialize(state_machine, current_value, last_valid_value)
  self.state_machine = state_machine
  self.last_valid_value = last_valid_value
  super(current_value&.inquiry)
end

Instance Attribute Details

#last_valid_value ⇒ Object

Returns the value of attribute last_valid_value.



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# File 'lib/steady_state/attribute/state.rb', line 4

def last_valid_value
  @last_valid_value
end

#state_machine ⇒ Object

Returns the value of attribute state_machine.



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# File 'lib/steady_state/attribute/state.rb', line 4

def state_machine
  @state_machine
end

Instance Method Details

#may_become?(new_value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/steady_state/attribute/state.rb', line 12

def may_become?(new_value)
  next_values.include?(new_value)
end

#next_values ⇒ Object 



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# File 'lib/steady_state/attribute/state.rb', line 16

def next_values
  @next_values ||= state_machine.transitions[last_valid_value || self]
end

#previous_values ⇒ Object 



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# File 'lib/steady_state/attribute/state.rb', line 20

def previous_values
  @previous_values ||= state_machine.transitions.select { |_, v| v.include?(last_valid_value || self) }.keys
end