It it possible with LUA - extending C++ ?

["vgrigoriev <grigoriev@...>" <grigoriev@...>]

I have heard that LUA with some extentions can parse some C++,
and generate some metadata about C++ structures,
for example in XML form.

Than it is interesting? is it possible next to generate constructions
on C++, using some extended directives from C++ or LUA to
generate structures that correct on standart C++,
but we had made it from expressions that was not presented in 
standard C++.
Even in some restriced form?

For example to release typedef templates.
To generate some architectured framework with result as C++ code from 
system of C++ classes, using LUA directives ?

Even in some restriced form? Which?

It is very interesting.

Thanks you.