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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.
 */

#include "ShapeFixer.h"

#include <stdexcept>

#include "cpp14/memory.h"
#include "util/Padding.h"
#include "kernel/OperationUtils.h"
#include "kernel/ConvolutionLayer.h"
#include "kernel/AvgPoolLayer.h"
#include "kernel/MaxPoolLayer.h"
#include "kernel/ConcatLayer.h"
#include "kernel/FullyConnectedLayer.h"
#include "kernel/ReshapeLayer.h"
#include "kernel/SoftMaxLayer.h"
#include "kernel/PermuteLayer.h"
#include "kernel/DepthwiseConvolutionLayer.h"
#include "kernel/AddLayer.h"

#include <backend/Backend.h>
#include <backend/IConfig.h>
#include "compiler/IExecutionBuilder.h"

#include "util/logging.h"

#include "util/Utils.h"

namespace neurun
{
namespace backend
{
namespace cpu
{

ShapeFixer::ShapeFixer(const neurun::model::Operands &operand_ctx,
                       const std::shared_ptr<TensorBuilder> &tensor_builder)
    : _ctx(operand_ctx), _tensor_builder(tensor_builder)
{
  assert(tensor_builder);
}

void ShapeFixer::visit(const model::operation::Conv2DNode &) { /* DO NOTHING */}

void ShapeFixer::visit(const model::operation::DepthwiseConv2DNode &) { /* DO NOTHING */}

void ShapeFixer::visit(const model::operation::MaxPool2DNode &) { /* DO NOTHING */}

void ShapeFixer::visit(const model::operation::AvgPool2DNode &) { /* DO NOTHING */}

void ShapeFixer::visit(const model::operation::ConcatNode &) { /* DO NOTHING */}

void ShapeFixer::visit(const model::operation::FullyConnectedNode &) { /* DO NOTHING */}

void ShapeFixer::visit(const model::operation::MulNode &) { throw std::runtime_error("NYI"); }

void ShapeFixer::visit(const model::operation::ReshapeNode &) { /* DO NOTHING */}

void ShapeFixer::visit(const model::operation::SoftmaxNode &) { /* DO NOTHING */}

void ShapeFixer::visit(const model::operation::AddNode &node)
{
  const auto lhs_index{node.getInputs().at(model::operation::AddNode::Input::LHS)};
  const auto rhs_index{node.getInputs().at(model::operation::AddNode::Input::RHS)};

  // Broadcasting and quantization
  if (!(_ctx.at(lhs_index).shape() == _ctx.at(rhs_index).shape()) ||
      _ctx.at(lhs_index).typeInfo().type() == model::DataType::QUANT8_ASYMM)
  {
    throw std::runtime_error{"NYI"};
  }
}

void ShapeFixer::visit(const model::operation::PermuteNode &) { /* DO NOTHING */}

void ShapeFixer::visit(const model::operation::CustomNode &) { /* DO NOTHING */}

} // namespace cpu
} // namespace backend
} // namespace neurun