There are several. In Clasp there is https://github.com/drmeister/clasp/blob/master/src/asttoolin... - that exposes the entire Clang AST class hierarchy. Then there is https://github.com/drmeister/demo-clasp-cxx - it exposes a small "Hello World" example. Then there is the SFML library that is being exposed by flash- one of the regulars in the #clasp IRC channel: https://github.com/clasp-developers/clasp-sfml