assembler will need redoing somewhat

with own data objects, we can assemble into them first
then write
may also store cpu instructions

lib/parfait/typed_method.rb

@@ -38,7 +38,6 @@ module Parfait
     def init(arguments, frame)
       raise "Wrong argument type, expect Type not #{arguments.class}" unless arguments.is_a? Type
       raise "Wrong frame type, expect Type not #{frame.class}" unless frame.is_a? Type
-      @binary = BinaryCode.new 0
       @arguments = arguments
       @frame = frame
     end
@@ -47,6 +46,11 @@ module Parfait
       @instructions = inst
     end
 
+    def create_binary
+      total = @instructions.total_byte_length / 4 + 1
+      @binary = BinaryCode.new( total )
+    end
+
     # determine whether this method has an argument by the name
     def has_argument( name )
       raise "has_argument #{name}.#{name.class}" unless name.is_a? Symbol