callbacks.h

/*
 * Copyright 2017 Google Inc.
 *
 * 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
 *
 *      http://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.
 */
#ifndef CLIF_EXAMPLES_CALLBACKS_CALLBACKS_H_
#define CLIF_EXAMPLES_CALLBACKS_CALLBACKS_H_

#include <functional>

namespace clif_example {
namespace callbacks {

class Data {
 public:
  int d;
};

class Functor {
 public:
  int operator()(const Data& d, int a) {
    return d.d + a;
  }
};

inline int Get(Data d, std::function<int(Data)> func) {
  return func(d);
}

inline void Set(std::function<void(Data*)> func, Data* d) {
  func(d);
}

inline std::function<int(const Data&, int)> GetCallback() {
  return Functor();
}

}  // namespace callbacks
}  // namespace clif_example

#endif  // CLIF_EXAMPLES_CALLBACKS_CALLBACKS_H_