/*******************************************************************************
* Copyright 2018 Intel Corporation
*
* 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.
*******************************************************************************/

#include "ngraph/op/reverse.hpp"
#include "ngraph/runtime/cpu/cpu_builder.hpp"
#include "ngraph/runtime/cpu/kernel/reverse.hpp"

using namespace std;
using namespace ngraph;

namespace ngraph
{
    namespace runtime
    {
        namespace cpu
        {
            template <>
            void Builder::BUILDER_DECL(ngraph::op::Reverse)
            {
                auto reverse = static_cast<const ngraph::op::Reverse*>(node);

                auto& functors = external_function->get_functors();
                auto& tensor_data = external_function->get_tensor_data();

                auto& arg_tensor = tensor_data[args[0].get_name()];
                auto& out_tensor = tensor_data[out[0].get_name()];

                auto arg_shape = args[0].get_shape();
                auto result_shape = out[0].get_shape();
                auto reversed_axes = reverse->get_reversed_axes();

                std::function<decltype(runtime::cpu::kernel::reverse<float>)> kernel;

                SELECT_KERNEL(kernel, out[0].get_element_type(), runtime::cpu::kernel::reverse);

                auto functor =
                    [&, kernel, arg_shape, result_shape, reversed_axes](CPURuntimeContext* ctx) {
                        kernel(arg_tensor, out_tensor, arg_shape, result_shape, reversed_axes);
                    };
                functors.emplace_back(functor);
            }

            REGISTER_OP_BUILDER(Reverse);
        }
    }
}
