1 files changed, 0 insertions, 70 deletions
diff --git a/activemodel/lib/active_model/state_machine.rb b/activemodel/lib/active_model/state_machine.rb
deleted file mode 100644
index 527794b34d..0000000000
--- a/activemodel/lib/active_model/state_machine.rb
+++ /dev/null
@@ -1,70 +0,0 @@
-module ActiveModel
-  module StateMachine
-    autoload :Event, 'active_model/state_machine/event'
-    autoload :Machine, 'active_model/state_machine/machine'
-    autoload :State, 'active_model/state_machine/state'
-    autoload :StateTransition, 'active_model/state_machine/state_transition'
-
-    extend ActiveSupport::Concern
-
-    class InvalidTransition < Exception
-    end
-
-    module ClassMethods
-      def inherited(klass)
-        super
-        klass.state_machines = state_machines
-      end
-
-      def state_machines
-        @state_machines ||= {}
-      end
-
-      def state_machines=(value)
-        @state_machines = value ? value.dup : nil
-      end
-
-      def state_machine(name = nil, options = {}, &block)
-        if name.is_a?(Hash)
-          options = name
-          name    = nil
-        end
-        name ||= :default
-        state_machines[name] ||= Machine.new(self, name)
-        block ? state_machines[name].update(options, &block) : state_machines[name]
-      end
-
-      def define_state_query_method(state_name)
-        name = "#{state_name}?"
-        undef_method(name) if method_defined?(name)
-        class_eval "def #{name}; current_state.to_s == %(#{state_name}) end"
-      end
-    end
-
-    def current_state(name = nil, new_state = nil, persist = false)
-      sm   = self.class.state_machine(name)
-      ivar = sm.current_state_variable
-      if name && new_state
-        if persist && respond_to?(:write_state)
-          write_state(sm, new_state)
-        end
-
-        if respond_to?(:write_state_without_persistence)
-          write_state_without_persistence(sm, new_state)
-        end
-
-        instance_variable_set(ivar, new_state)
-      else
-        instance_variable_set(ivar, nil) unless instance_variable_defined?(ivar)
-        value = instance_variable_get(ivar)
-        return value if value
-
-        if respond_to?(:read_state)
-          value = instance_variable_set(ivar, read_state(sm))
-        end
-
-        value || sm.initial_state
-      end
-    end
-  end
-end