getTypeOrNullDefault static method
Implementation
static NopListener? getTypeOrNullDefault(Type t, NopListener owner) {
t = GetTypePointers.getAlias(t);
NopListener? listener = owner._subNopListeners[t];
listener ??= owner._attachNopListeners[t];
if (listener == null) {
listener = owner.handle?.findTypeListener(t);
if (owner._dependenceTree.isNotEmpty) {
listener ??= GetTypePointers.defaultFindNopListener(
t, owner._dependenceTree.first);
}
if (listener != null) {
owner.addListener(t, listener);
assert(owner.scope.index >= listener.scope.index);
}
}
return listener;
}