Start to make slots recursive

lib/slot_machine/instruction/argument_transfer.rb

@@ -25,7 +25,7 @@ module SlotMachine
     def initialize( source , receiver,arguments )
       super(source)
       @receiver , @arguments = receiver , arguments
-      raise "Receiver not Slot #{@receiver}" unless @receiver.is_a?(Slot)
+      raise "Receiver not Slot #{@receiver}" unless @receiver.is_a?(Slotted)
       @arguments.each{|a| raise "args not SlotLoad #{a}" unless a.is_a?(SlotLoad)}
     end
 

lib/slot_machine/instruction/slot_load.rb

@@ -33,8 +33,8 @@ module SlotMachine
       @left , @right = left , right
       @left = Slotted.for(@left.shift , @left) if @left.is_a? Array
       @right = Slotted.for(@right.shift , @right) if @right.is_a? Array
-      raise "right not SlotMachine, #{@right.to_s}" unless @right.is_a?( Slot )
-      raise "left not SlotMachine, #{@left.to_s}" unless @left.is_a?( Slot )
+      raise "right not SlotMachine, #{@right.to_s}" unless @right.is_a?( Slotted )
+      raise "left not SlotMachine, #{@left.to_s}" unless @left.is_a?( Slotted )
       @original_source = original_source || self
     end
 

lib/slot_machine/instruction/truth_check.rb

@@ -11,7 +11,7 @@ module SlotMachine
     def initialize(condition , false_jump)
       super(false_jump)
       @condition  = condition
-      raise "condition must be slot_definition #{condition}" unless condition.is_a?(Slot)
+      raise "condition must be slot_definition #{condition}" unless condition.is_a?(Slotted)
     end
 
     def to_s