vibrator/utils.h

/*
 * Copyright (C) 2019 The Android Open Source Project
 *
 * 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 ANDROID_HARDWARE_VIBRATOR_UTILS_H
#define ANDROID_HARDWARE_VIBRATOR_UTILS_H

template <typename T>
class Is_Iterable {
  private:
    template <typename U>
    static std::true_type test(typename U::iterator *u);

    template <typename U>
    static std::false_type test(U *u);

  public:
    static const bool value = decltype(test<T>(0))::value;
};

template <typename T, bool B>
using Enable_If_Iterable = std::enable_if_t<Is_Iterable<T>::value == B>;

#endif  // ANDROID_HARDWARE_VIBRATOR_UTILS_H