[stack] Semi-compilation

I've finished initial version of the interpreter (*). Currently my evaluator works using switch statements over the deque(**) of boxes and I want to split this deque into one deque holding data and another deque holding pointer to functions:
For 2 3 +
Currently :  Box<primitive,Plus>,Box<float,*3>,Box<float,*2>,

Planned:
Data Box<float,*3>,Box<float,*2>
Code Box<*PlusFloat>,Box<*PushFloat>,Box<*PushFloat>,

What do you think about this? Or could you suggest a better approach 

Slobodan
(*) http://www.bitbucket.org/bobiblazeski/lateral/
(**) Future of computation