Internals of XCB python generator code

Hi, first: thanks for reading!
The Goal of my GSoC is to extend input support for XCB - i.e. implement XKB bindings and utility functions. The first thing I have to concentrate on is to generate a C language binding for the XKB protocol - the required XML protocol description has been done by Mariusz Ceier in last year's GSoC. 
The XML files describing the X protocol and extensions are converted into C code with a code generator written in python. The code generator basically consists of two parts: One part (described here in detail) parses the XML files, the other part (will be described in one of my next posts) produces the language mapping. 
I have extended the XML parser & the underlying Type system as a number of new elements are required in order to describe the XKB protocol extension. The newly introduced types still need to be documented, I will do that as soon as I am sure they are complete :)
The next step will be to think of some C mapping for the new types - this as well be the topic of one of the next posts.