starting to move builtin into parfait

single object method for now
little framework next

lib/mom/builtin/get_internal_word.rb

@@ -12,4 +12,15 @@ module Mom
       end
     end
   end
+  class GetInternalWord < Instruction
+    def to_risc(compiler)
+      compiler.builder(compiler.source).build do
+        object! << message[:receiver]
+        integer! << message[:arg1] #"at" is at index 0
+        integer.reduce_int
+        object << object[integer]
+        message[:return_value] << object
+      end
+    end
+  end
 end