// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef IOS_WEB_PUBLIC_THREAD_WEB_TASK_TRAITS_H_
#define IOS_WEB_PUBLIC_THREAD_WEB_TASK_TRAITS_H_

#include "base/task/task_traits.h"
#include "ios/web/public/thread/web_thread.h"

namespace web {

class WebTaskTraits : public base::TaskTraits {
 public:
  using ValidTraits = base::ConcatParameterPacks<
      base::TaskTraits::ValidTraits,
      base::ParameterPack<
          // TODO(crbug.com/40217644): iOS never supported TaskPriority, but
          // some callers are providing it... Add support?
          base::TaskPriority,

          // TODO(crbug.com/40108370): These traits are meaningless on
          // WebThreads but some callers of post_task.h had been using them in
          // conjunction with WebThread::ID traits. Remove such usage
          // post-migration.
          base::MayBlock,
          base::TaskShutdownBehavior>>;

  template <class... ArgTypes>
    requires base::trait_helpers::AreValidTraits<ValidTraits, ArgTypes...>
  constexpr WebTaskTraits(ArgTypes... args) : base::TaskTraits(args...) {}
};

}  // namespace web

#endif  // IOS_WEB_PUBLIC_THREAD_WEB_TASK_TRAITS_H_