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/*
 * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
 *
 * 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 __NEURUN_MODEL_OPERATION_SUBGRAPH_H__
#define __NEURUN_MODEL_OPERATION_SUBGRAPH_H__

#include <vector>
#include <string>
#include <memory>

#include "Index.h"
#include "Node.h"

namespace neurun
{
namespace model
{
namespace operation
{

// To support ValueSwappable, Element doesn't have members which are classes
// as value(or can have members which are classes as value and the classes
// support Swappable)
struct Element
{
  Index index;
  const Node *node;

  Element(const Index *i, const Node *n) : index{*i}, node{n}
  {
    // DO NOTHING
  }
};

class Subgraph : public Node
{
public:
  Subgraph();
  Subgraph(const Subgraph &) = delete;

public:
  virtual void accept(NodeVisitor &&visitor) const override;

  virtual std::string getName(void) const override { return "Subgraph"; }

public:
  void appendOperation(const Index &index, const Node &node)
  {
    _operations.emplace_back(&index, &node);
  }

  std::vector<Element> &operations(void) { return _operations; }

  const std::vector<Element> &operations(void) const { return _operations; }

  uint32_t size(void) const { return _operations.size(); }

  // TODO: Impl Dumper instead of this method
  std::string getStr(void) const;

private:
  std::vector<Element> _operations;
};

} // namespace operation
} // namespace model
} // namespace neurun

#endif // __NEURUN_MODEL_OPERATION_SUBGRAPH_H__