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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_BACKEND_BACKEND_H__
#define __NEURUN_BACKEND_BACKEND_H__

#include <memory>

#include "ir/Operands.h"

namespace neurun
{
namespace backend
{

namespace custom
{
class IKernelBuilder;
}

class Backend;
struct IConfig;
class IConstantInitializer;
class IKernelGenerator;
class IShapeFixer;
class ITensorRegister;
struct ITensorBuilder;

class BackendContext
{
public:
  const Backend *backend;
  std::shared_ptr<ITensorBuilder> tensor_builder;
  std::shared_ptr<IConstantInitializer> constant_initializer;
  std::shared_ptr<IKernelGenerator> kernel_gen;
  std::shared_ptr<IShapeFixer> shape_fixer;
  std::shared_ptr<ITensorRegister> tensor_register;
};

class Backend
{
public:
  virtual ~Backend() = default;
  virtual std::shared_ptr<neurun::backend::IConfig> config() const = 0;

  virtual std::unique_ptr<BackendContext>
  newContext(const ir::Operands &operands,
             const std::shared_ptr<backend::custom::IKernelBuilder> &kb) const = 0;
};

} // namespace backend
} // namespace neurun

#endif // __NEURUN_BACKEND_BACKEND_H__