Function rustc_attr::find_stability

pub fn find_stability(
    sess: &Session,
    attrs: &[Attribute],
    item_sp: Span
) -> (Option<(Stability, Span)>, Option<(ConstStability, Span)>, Option<(DefaultBodyStability, Span)>)

Collects stability info from all stability attributes in attrs. Returns None if no stability attributes are found.