/*******************************************************************************
 * Copyright (c) 2015-2018 Skymind, Inc.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Apache License, Version 2.0 which is available 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 ******************************************************************************/

//
// @author raver119@gmail.com

#ifndef LIBND4J_CONSTANTDATABUFFER_H
#define LIBND4J_CONSTANTDATABUFFER_H

#include <system/dll.h>
#include <system/pointercast.h>
#include <memory>
#include <array/PointerWrapper.h>
#include <array/DataType.h>


namespace sd {
    class ND4J_EXPORT ConstantDataBuffer {
    private:
      std::shared_ptr<PointerWrapper> _primaryBuffer;
      std::shared_ptr<PointerWrapper> _specialBuffer = nullptr;
      uint64_t _length = 0;
      uint8_t _sizeOf = 0;

    public:
        ConstantDataBuffer(const std::shared_ptr<PointerWrapper>& primary, uint64_t numEelements, DataType dype);
        ConstantDataBuffer(const std::shared_ptr<PointerWrapper>& primary, const std::shared_ptr<PointerWrapper>& special, uint64_t numEelements, DataType dype);
        ConstantDataBuffer(const ConstantDataBuffer &other);
        ConstantDataBuffer() = default;
        ~ConstantDataBuffer() = default;

        uint8_t sizeOf() const;
        uint64_t length() const;

        void* primary() const;
        void* special() const;

        ConstantDataBuffer& operator=(const ConstantDataBuffer& other) = default;
        ConstantDataBuffer& operator=(ConstantDataBuffer&& other) noexcept = default;

        template <typename T>
        T* primaryAsT() const;

        template <typename T>
        T* specialAsT() const;
    };
}

#endif //DEV_TESTS_CONSTANTDATABUFFER_H