accessing template arguments from libclang

Clang Frontend
1

I am trying to parse the following code with the Python interface to libclang (full listing attached):

class Toaster : Base<int,7> { … };

Unfortunately, traversing cursors via getChildren gives me the following tree (see clang_dump() in autodescribe.py for the code that generated this tree):

CLASS_DECL Toaster
CXX_BASE_SPECIFIER None : Base<int,7>
TEMPLATE_REF None : Base
INTEGER_LITERAL None : 7
CXX_ACCESS_SPEC_DECL PUBLIC : public:
…

The base specifier only seems to mention “Base” and “7”, not “int”. Should I be able to fully inspect Base<int,7> using cursors?

I also tried traversing the Type object corresponding to Base<int,7>, but I don’t see any methods for accessing template parameters either in libclang’s Python bindings or in the original C. If I’m correct that the functionality is missing from the C layer, what’s the easiest way to add it? The C++ structure of template references seems quite complicated (I imagine by necessity :)).

Background: I’m working on a clang-based front end for the xdress Python binding generator project. I’ve already made a couple minor improvements to the libclang Python bindings (exposing formatDiagnostic and the details of access specifiers), and am happy to contribute these back once I’m done.

Thanks for any suggestions!
Geoffrey

toaster.h (781 Bytes)

autodescribe.py (76.8 KB)

2

In case the previous email was too long, here’s a quick summary:

I am trying to parse the code

class Toaster : Base<int,7> { … };

I can get to the base specifier corresponding to Base<int,7> and from there to a RECORD type, but there appears to be no way to access the template arguments of a template reference from either the Python or C bindings to clang. If I’m correct that this isn’t exposed yet, what’s the right way to do it?

Thanks,
Geoffrey

3

Another ping for this message: let me know if this is the wrong forum
for questions about libclang.

Geoffrey