first propper hoisting test

had to change course, normalising and object creation is not possible
in one go
have to now generate random tmp vars  that will have to be picked up
later (sorted by tmp_ prefix?)

lib/vool/statement.rb

@@ -27,13 +27,12 @@ module Vool
 
     # after creation vool normalizes to ensure valid syntax and simplify
     # also throw errors if violation
-    def normalize(method)
-      return self
+    def normalize()
+      raise self.class.name
     end
 
-    # flatten tree to array
-    def collect(arr)
-      arr << self
+    def each()
+      yield self
     end
 
     def to_mom( _ )
@@ -44,25 +43,15 @@ module Vool
     def ct_type
       nil
     end
-    # create corresponding parfait objects, ie classes, types, methods
-    # mainly implemented by class/method statement
-    def create_objects
-    end
 
-    # used to collect type information
-    def add_ivar( array )
-    end
-
-    # used to collect frame information
-    def add_local( array )
-    end
-
-    # used for method creation
-    def set_class( clazz )
-    end
   end
 
   class Expression
+
+    def normalize
+      raise "should not be normalized #{self}"
+    end
+
   end
 
 end