Function remove_importlib_frames_inner

crates/vm/src/import.rs:208–246

(
    vm: &VirtualMachine,
    tb: Option<PyRef<PyTraceback>>,
    always_trim: bool,
)

}

fn remove_importlib_frames_inner(
    vm: &VirtualMachine,
    tb: Option<PyRef<PyTraceback>>,
    always_trim: bool,
) -> (Option<PyRef<PyTraceback>>, bool) {
    let traceback = if let Some(tb) = tb {
        tb
    } else {
        return (None, false);
    };

    let file_name = traceback.frame.code.source_path().as_str();

    let (inner_tb, mut now_in_importlib) =
        remove_importlib_frames_inner(vm, traceback.next.lock().clone(), always_trim);
    if file_name == "_frozen_importlib" || file_name == "_frozen_importlib_external" {
        if traceback.frame.code.obj_name.as_str() == "_call_with_frames_removed" {
            now_in_importlib = true;
        }
        if always_trim || now_in_importlib {
            return (inner_tb, now_in_importlib);
        }
    } else {
        now_in_importlib = false;
    }

    (
        Some(
            PyTraceback::new(
                inner_tb,
                traceback.frame.clone(),
                traceback.lasti,
                traceback.lineno,
            )
            .into_ref(&vm.ctx),
        ),
        now_in_importlib,
    )
}

// TODO: This function should do nothing on verbose mode.
// TODO: Fix this function after making PyTraceback.next mutable