arm_compute/core/utils/strong_type/StrongType.h

/*
 * Copyright (c) 2018 ARM Limited.
 *
 * SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#ifndef __ARM_COMPUTE_STRONG_TYPE_STRONG_TYPE_H__
#define __ARM_COMPUTE_STRONG_TYPE_STRONG_TYPE_H__

#include <type_traits>

namespace arm_compute
{
namespace strong_type
{
/** Strong type
 *
 * @tparam T           Exact type of the Strong Type
 * @tparam Tag         Tag used to distinguish between types with same T
 * @tparam Attributes  Attributes of the Strong Type
 */
template <typename T, typename Tag, template <typename> class... Attributes>
class StrongType : public Attributes<StrongType<T, Tag, Attributes...>>...
{
public:
    /** Exact underlying type **/
    using ExactType = T;

public:
    /** Default Constructor
     *
     * @param[in] val Initialization value
     */
    StrongType(T val)
        : _val(val)
    {
    }
    /** Accessor of the value of the exact type
     *
     * @return Exact type value
     */
    T &get()
    {
        return _val;
    }
    /** Accessor of the value of the exact type
     *
     * @return Exact type value
     */
    const T &get() const
    {
        return _val;
    }

private:
    T _val = {};
};
} // namespace strong_type
} // namespace arm_compute
#endif /* __ARM_COMPUTE_STRONG_TYPE_STRONG_TYPE_H__ */