function_dispatcher.h

// Copyright 2022 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#pragma once
 
#include <utility>
 
#include "pw_async/dispatcher.h"
#include "pw_async/task_function.h"
#include "pw_status/status.h"
 
namespace pw::async {
 
class FunctionDispatcher : public Dispatcher {
 public:
  ~FunctionDispatcher() override = default;
 
  // Prevent hiding of overloaded virtual methods.
  using Dispatcher::Post;
  using Dispatcher::PostAfter;
  using Dispatcher::PostAt;
 
  virtual Status Post(TaskFunction&& task_func) {
    return PostAt(std::move(task_func), now());
  }
 
  virtual Status PostAfter(TaskFunction&& task_func,
                           chrono::SystemClock::duration delay) {
    return PostAt(std::move(task_func), now() + delay);
  }
 
  virtual Status PostAt(TaskFunction&& task_func,
                        chrono::SystemClock::time_point time) = 0;
};
 
}  // namespace pw::async