[MonoDevelop] Source analysis, code completion, syntax coloring

[forumer at smartmobili.com]

Hi,

I would like some information about the way source analysis and code 
completion works on monodevelop.
Let's say I would like to add support for a new non .net language (for 
instance objective-c),
how am I supposed to do it ?
Would it be possible to implement this source analysis inside a native 
dll that could be also used
for instance to create a Visual addin ?
If I use an external dll, can I pass the content of the file currently 
edited to it and "mark" token ?
What are the entry points between editor and syntax highlighting ?

Thanks