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# File 'lib/switcher.rb', line 9
def switcher(name, options={}, &block)
self.class_variable_defined?(:@@__specs__) or self.class_variable_set(:@@__specs__, [])
spec = Spec.new(name, options)
spec.instance_eval(&block)
self.class_variable_get(:@@__specs__) << spec
spec_name = spec.name
define_method(:"#{spec_name}_spec") { spec }
define_method(:"#{spec_name}_prev") { self.instance_variable_get(:"@#{spec_name}_statement").state_prev }
define_method(:"#{spec_name}") { self.instance_variable_get(:"@#{spec_name}_statement").state_current }
define_method(:"#{spec_name}=") { nil }
define_method(:"#{spec_name}_force") { |state| self.instance_variable_get(:"@#{spec_name}_statement").force_state(state.to_sym) }
events = []
spec.states.each_pair do |state_name, state|
define_method(:"#{spec_name}_#{state_name}?") do
state_name == self.send(:"#{spec_name}")
end
events << state.event_names
end
events.flatten.each do |event_name|
define_method(:"can_#{event_name}?") do
self.class.class_variable_get(:@@__specs__).map { |spc|
spc.states[self.send(:"#{spc.name}")].event_names.include?(event_name)
}.include?(true)
end
define_method(:"#{event_name}!") do |*args|
switch(event_name, *args)
end
end
end
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