getComputed<T> function

T getComputed<T>(Computed<T> computed)

Get the current value of a computed, updating if necessary

Implementation

@pragma('vm:prefer-inline')
@pragma('wasm:prefer-inline')
@pragma('dart2js:prefer-inline')
T getComputed<T>(Computed<T> computed) {
  final flags = computed.flags;
  if (flags & (ReactiveFlags.dirty) != 0 ||
      (flags & (ReactiveFlags.pending) != 0 &&
          (checkDirty(computed.deps!, computed) ||
              _removePending(computed, flags)))) {
    if (updateComputed(computed)) {
      final subs = computed.subs;
      if (subs != null) {
        shallowPropagate(subs);
      }

      JoltDebug.set(computed);
    }
  } else if (flags == (ReactiveFlags.none)) {
    computed.flags = (ReactiveFlags.mutable | ReactiveFlags.recursedCheck);
    final prevSub = setActiveSub(computed);
    try {
      computed.pendingValue = computed.getter();
    } finally {
      activeSub = prevSub;
      computed.flags &= ~(ReactiveFlags.recursedCheck);
    }

    JoltDebug.set(computed);
  }
  final sub = activeSub;
  if (sub != null) {
    link(computed, sub, cycle);
  }

  JoltDebug.get(computed);

  return computed.pendingValue as T;
}