method stores constants

lib/virtual/compiled_method_info.rb

@@ -50,8 +50,9 @@ module Virtual
       @blocks = [enter]
       @current = enter
       new_block("return").add_code(MethodReturn.new)
+      @constants = []
     end
-    attr_reader   :blocks
+    attr_reader   :blocks , :constants
     attr_accessor :return_type , :current , :receiver
 
     # add an instruction after the current (insertion point)

lib/virtual/compiler/basic_expressions.rb

@@ -73,6 +73,7 @@ module Virtual
       def self.compile_string expression , method
         value = expression.string.to_sym
         to = Return.new(Reference , value)
+        method.info.constants << value
         method.info.add_code Set.new( to , value )
         to
       end