Class: Jsm::States

Inherits:
Object
  • Object
show all
Defined in:
lib/jsm/states.rb

Overview

Jsm::States job is to collect all states

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ States

Returns a new instance of States.



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# File 'lib/jsm/states.rb', line 6

def initialize
  @list = []
end

Instance Attribute Details

#list ⇒ Object (readonly)

Returns the value of attribute list.



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# File 'lib/jsm/states.rb', line 3

def list
  @list
end

Instance Method Details

#add_state(state_name, params = {}) ⇒ Object

register new state into the list

Parameters:

  • state_name
  • params: —

    allowed params is ‘initial`(boolean value, default is false)



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# File 'lib/jsm/states.rb', line 13

def add_state(state_name, params = {})
  initial = params.fetch(:initial) { false }
  if !state_unique?(state_name)
    raise Jsm::NotUniqueStateError, "state #{state_name} has been defined"
  end

  if initial && !initial_state.nil?
    raise Jsm::InvalidStateError,"can not set initial state to #{state_name}. current initial state is #{initial_state.name}"
  end

  state = create_state(state_name, initial)
  list.push(state)

  @initial_state = state if state.initial
end

#has_state?(state_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/jsm/states.rb', line 33

def has_state?(state_name)
  list.any? { |state| state.name == state_name}
end

#initial_state ⇒ Object 



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# File 'lib/jsm/states.rb', line 29

def initial_state
  @initial_state
end