: Renderer(context), op_(op) {}

void OpImplementationRenderer::Render() {
  RenderInitialization();

  if (op_.IsListOp()) {
    RenderExecutionListOp();
  } else if (op_.NumOutputs() == 0) {
    RenderExecutionZeroOutputs();
  } else if (op_.NumOutputs() == 1) {
    RenderExecutionSingleOutput();
  } else {
    RenderExecutionMultipleOutputs();
  }
}

void OpImplementationRenderer::RenderInitialization() {

  return argument_attrs_;
}

const std::vector<OpArgumentView>& OpView::AllArguments() const {
  return all_arguments_;
}

int OpView::NumInputs() const { return input_args_.size(); }

int OpView::NumOutputs() const { return output_args_.size(); }

ArgView OpView::OnlyInput() const {
  CHECK_EQ(input_args_.size(), 1);  // Crash OK
  return input_args_.front();
}

ArgView OpView::OnlyOutput() const {