Mario de Sousa <msousa@fe.up.pt> [Tue, 16 Oct 2012 18:56:03 +0100] rev 680
New visitor classes missing from previous commit.
Mario de Sousa <msousa@fe.up.pt> [Tue, 16 Oct 2012 18:23:16 +0100] rev 679
Remove line printing debug info.
Mario de Sousa <msousa@fe.up.pt> [Tue, 16 Oct 2012 18:06:32 +0100] rev 678
Add classes to print status of AST (use only for debugging!)