12三/090
Loom
Check out Loom:
http://code.google.com/p/loom-as3/
"The goal of the Loom project is to provide runtime subclass
generation and bytecode weaving in a native ActionScript 3
environment. The primary intent for the library is to support
aspect-oriented programming (AOP), but further use cases include
supporting mocking, logging, security, and other AOP-based solutions
that need to overcome the limitations of the new fixed traits model in
the ActionScript 3 language."