Abstract Syntax Tree C/C++ support in VS

Question

Hi

I'm responsible for porting the gui part of an analysis tool from eclipse to VS. Now I wonder if there exist an AST parser as competent as the one eclipse/cdt [1] supply or do we have to build a fast version of our own AST builder or maybe even use eclipse's?
As I understand there have been some work over at MS as Jason Lucas mentions in his msdn blog [2] from 2006 about exposing access to MS AST but what is the status in the matter is it included in VS2010 beta? What are other plug-ins like visual assist using (I suppose their own)?

[1] http://wiki.eclipse.org/CDT/designs/Overview_of_Parsing
[2] http://blogs.msdn.com/vcblog/archive/2006/08/16/thoughts-on-the-visual-c-abstract-syntax-tree-ast.aspx

/Jimmie