I suggest taking a look clang/llvm. They have a friendly API for access to parse...

		wladimir on March 15, 2012 \| parent \| context \| favorite \| on: Efficiently Browsing Text or Code (esp. with Emacs... I suggest taking a look clang/llvm. They have a friendly API for access to parse trees and intermediate metadata exactly for purposes like this. And it's open source too!