introducing expressions and constants

not everything statement anymore (as in ruby)
basic statement tests working, rest havoc

lib/vool/statements/local_assignment.rb

@@ -0,0 +1,21 @@
+module Vool
+
+  class LocalAssignment < Assignment
+    # used to collect frame information
+    def add_local( array )
+      array << @name
+    end
+
+    def to_mom( method )
+      if method.args_type.variable_index(@name)
+        type = :arguments
+      else
+        type = :frame
+      end
+      statements = @value.to_mom(method)
+      statements << @value.slot_class.new([:message , type , @name] , @value.slot_definition)
+      return statements
+    end
+  end
+
+end