shallowPropagate method

void shallowPropagate(Link link)

Propagates changes to immediate subscribers only.

Unlike propagate, this method only marks direct subscribers as dirty without recursive traversal. Used when a node's value has been confirmed to change and all immediate dependents need notification.

Typically called after successful updates to notify immediate subscribers that their dependency has changed.

Implementation

@pragma('vm:align-loops')
void shallowPropagate(Link link) {
  Link? curr = link;
  do {
    final sub = curr!.sub, flags = sub.flags;
    if ((flags & 48 /*(ReactiveFlags.pending | ReactiveFlags.dirty)*/) ==
        ReactiveFlags.pending) {
      sub.flags = flags | ReactiveFlags.dirty;
      if ((flags &
              6 /*(ReactiveFlags.watching | ReactiveFlags.recursedCheck)*/) ==
          ReactiveFlags.watching) {
        notify(sub);
      }
    }
  } while ((curr = curr.nextSub) != null);
}