[cfe-dev] Introducing Python Bindings for LibTooling

[Stephen Kelly via cfe-dev]

On 25/04/2019 16:52, Firat Kasmis via cfe-dev wrote:
> Hi,
> 
> I am working on python bindings for LibTooling right now - see 
> https://github.com/firolino/python-clang-tooling. So, one can use pretty 
> things such as
> 
> recordDecl(hasDescendant(
>      ifStmt(hasTrueExpression(
>          expr(hasDescendant(
>              ifStmt()))))))
> 
> in python as well.
> 
> I am almost finished. Just a few things are left:
>      - Include all narrowing and traverse AST matchers
>      - Fix CMakeLists.txt for other python versions
>      - Transform clang AST matcher unit tests to python version and use it
>      - Provide pip packages
>      - Provide Rewriter
>      - Clean the code
> 
> Unfortunately, the resulting python module is already 190 MB big. Since 
> most of the matcher stuff are templates, I need to instantiate 
> everything in any possible combination to make them exposable to python. 
> If you have suggestions or improvements regarding the bindings, please 
> let me know.


Interesting work. It would be easier to just process a clang-query 
string, but I guess you benefit from error messages in the python code 
instead of in a string.

Do you have further plans for this library once it's clean and you have 
a pip package etc done?

I already wrote a generator for javascript bindings for AST nodes to 
expose the various SourceLocations and SourceRanges and strings exposed 
from AST node classes. That's probably something you will also need 
eventually?

Thanks,

Stephen.