Method weakref_list_ref

crates/vm/src/object/core.rs:403–413

(&self)

    /// WeakRefList is always immediately before PyInner (fixed WEAKREF_OFFSET).
    #[inline(always)]
    pub(super) fn weakref_list_ref(&self) -> Option<&WeakRefList> {
        let (flags, _) = self.read_type_flags();
        if !flags.has_feature(crate::types::PyTypeFlags::HAS_WEAKREF) {
            return None;
        }
        let self_addr = (self as *const Self as *const u8).addr();
        let ptr = core::ptr::with_exposed_provenance::<WeakRefList>(
            self_addr.wrapping_sub(WEAKREF_OFFSET),
        );
        Some(unsafe { &*ptr })
    }
}

impl<T: fmt::Debug> fmt::Debug for PyInner<T> {