base_location/interfaces/inner_api/include/single_instance.h

/*
 * Copyright (c) 2023 Huawei Device Co., Ltd.
 * 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 BASE_LOACTION_INTERFACES_SINGLE_INSTANCE_H
#define BASE_LOACTION_INTERFACES_SINGLE_INSTANCE_H

namespace OHOS {
namespace Location {
#define DECLARE_SINGLE_INSTANCE_BASE(className)       \
public:                                               \
    static className& GetInstance();                  \
private:                                              \
    className(className&&) = delete;                  \
    className(const className&) = delete;             \
    className& operator= (className&&) = delete;      \
    className& operator= (const className&) = delete;

#define DECLARE_SINGLE_INSTANCE(className)  \
    DECLARE_SINGLE_INSTANCE_BASE(className) \
private:                                    \
    className() = default;                  \
    ~className() = default;

#define DECLARE_SINGLE_INSTANCE_IMPLEMENT(className) \
className& className::GetInstance()                  \
{                                                    \
    static auto instance = new className();          \
    return *instance;                                \
}
}; // namespace Location
}; // namespace OHOS
#endif // BASE_LOACTION_INTERFACES_SINGLE_INSTANCE_H