/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

#pragma once

#include <react/core/EventEmitter.h>
#include <react/core/LocalData.h>
#include <react/core/Props.h>
#include <react/core/ReactPrimitives.h>
#include <react/core/ShadowNode.h>
#include <react/core/State.h>

namespace facebook {
namespace react {

/*
 * An object which supposed to be used as a parameter specifying a shape
 * of created or cloned ShadowNode.
 * Note: Most of the fields are `const &` references (essentially just raw
 * pointers) which means that the Fragment does not copy/store them nor
 * retain ownership of them.
 */
struct ShadowNodeFragment {
  Tag const tag = tagPlaceholder();
  SurfaceId const rootTag = surfaceIdPlaceholder();
  Props::Shared const &props = propsPlaceholder();
  EventEmitter::Shared const &eventEmitter = eventEmitterPlaceholder();
  ShadowNode::SharedListOfShared const &children = childrenPlaceholder();
  LocalData::Shared const &localData = localDataPlaceholder();
  State::Shared const &state = statePlaceholder();

  /*
   * Placeholders.
   * Use as default arguments as an indication that the field does not need to
   * be changed.
   */
  static Tag const tagPlaceholder();
  static SurfaceId const surfaceIdPlaceholder();
  static Props::Shared const &propsPlaceholder();
  static EventEmitter::Shared const &eventEmitterPlaceholder();
  static ShadowNode::SharedListOfShared const &childrenPlaceholder();
  static LocalData::Shared const &localDataPlaceholder();
  static State::Shared const &statePlaceholder();
};

} // namespace react
} // namespace facebook