[OT] code is data

[Diez B. Roggisch]

>> because lots of people know how to describe XML transformations, and
>> there are plenty of tools that implement such transformations efficiently ?
> 
> Efficiently enough for dynamic (runtime) use ?

Using XML-transformation for AST manipulation isn't my first choice 
either - yet efficiency concerns aren't really the point here - after 
all we're talking about generating code, which would be pretty useless 
if the work was to be done by the transformation instead of that very 
code generated ...

So the question is: do XML/XSL give an advantage here? As I said - I 
personally don't think so, IMHO a standard reducer using a decent 
visitor is easy enough  and works well. But your (or better Fredrik's) MMV.

Diez