concat.hpp

// Copyright (C) 2018-2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
//
 
#pragma once
 
#include <memory>
 
#include "ngraph/op/op.hpp"
 
namespace ngraph
{
    namespace op
    {
        namespace v0
        {
            /// \brief Concatenation operation.
            class NGRAPH_API Concat : public Op
            {
            public:
                NGRAPH_RTTI_DECLARATION;
 
                /// \brief Constructs a concatenation operation.
                Concat() = default;
                /// \brief Constructs a concatenation operation.
                ///
                /// \param args               The outputs producing the input tensors.
                /// \param axis The axis along which to concatenate the input tensors.
                Concat(const OutputVector& args, int64_t axis);
 
                /// \brief Constructs a concatenation operation.
                ///
                /// \param args               The nodes producing the input tensors.
                /// \param axis The axis along which to concatenate the input tensors.
                Concat(const NodeVector& args, int64_t axis);
 
                bool visit_attributes(AttributeVisitor& visitor) override;
                void validate_and_infer_types() override;
 
                virtual std::shared_ptr<Node>
                    clone_with_new_inputs(const OutputVector& new_args) const override;
 
                /// \return The concatenation axis.
                int64_t get_concatenation_axis() const { return m_concat_axis; }
                void set_concatenation_axis(int64_t concatenation_axis)
                {
                    m_concat_axis = concatenation_axis;
                }
                /// \return The concatenation axis.
                int64_t get_axis() const { return m_axis; }
                void set_axis(int64_t axis) { m_axis = axis; }
                bool evaluate(const HostTensorVector& outputs,
                              const HostTensorVector& inputs) const override;
                bool has_evaluate() const override;
                bool evaluate_lower(const HostTensorVector& output_values) const override;
                bool evaluate_upper(const HostTensorVector& output_values) const override;
 
            protected:
                /// \ brief m_axis stores default value for all iterations
                int64_t m_axis;
                /// \brief m_concat_axis stores m_axis plus the number of rank for each iteration
                int64_t m_concat_axis = -1;
            };
        } // namespace v0
        using v0::Concat;
    } // namespace op
} // namespace ngraph