How to view Clang AST?
Clang supports showing the AST with Graphviz's
dotty -- you can grab the temporary .dot file generated (name is printed out) to get the graph source.
clang -cc1 -ast-view your_file.c
You can also print to the command line with:
clang -cc1 -ast-dump your_file.c
clang -cc1 -ast-print your_file.c
or in 3.3:
clang -cc1 -ast-dump-xml your_file.c
but this was removed later as pointed by Lukas Kubanek in the comment.
The method with
-cc1 invocation will have problem with includes and recognizing C++.
For full-featured parsing, use:
clang -Xclang -ast-dump file.cpp