get plus (+) working

alas, new integer is not created yet

lib/parfait/integer.rb

@@ -19,6 +19,11 @@ module Parfait
     def self.integer_index
       3 # 1 type, 2 next_i
     end
+
+    def get_internal_word( index )
+      return super(index) unless index == Integer.integer_index
+      return @value
+    end
     # :integer?, :odd?, :even?, :upto, :downto, :times, :succ, :next, :pred, :chr, :ord, :to_i, :to_int, :floor,
     # :ceil, :truncate, :round, :gcd, :lcm, :gcdlcm, :numerator, :denominator, :to_r, :rationalize,
     # :singleton_method_added, :coerce, :i, :+@, :-@, :fdiv, :div, :divmod, :%, :modulo, :remainder, :abs, :magnitude,

lib/risc/builtin/integer.rb

@@ -20,8 +20,8 @@ module Risc
           compiler = compiler_for(:Integer,:+ ,{other: :Integer})
           me , other = self_and_int_arg(compiler,source + "1")
           # reduce me and other to integers
-          compiler.add_slot_to_reg( source + "2" , me , 2 , me)
-          compiler.add_slot_to_reg( source + "3", other , 2 , other)
+          compiler.add_slot_to_reg( source + "2" , me , Parfait::Integer.integer_index , me)
+          compiler.add_slot_to_reg( source + "3", other , Parfait::Integer.integer_index , other)
           compiler.add_code Risc.op( source + "4", :+ , me , other)
           #TODO must get an Integer and put the value there then return the integer (object not value)
           # and put it back into the return value