caffe2/operators/if_op.h

#ifndef CAFFE2_OPERATORS_IF_OP_H_
#define CAFFE2_OPERATORS_IF_OP_H_

#include "caffe2/core/context.h"
#include "caffe2/core/logging.h"
#include "caffe2/core/operator.h"

namespace caffe2 {

template <class Context>
class IfOp final : public Operator<Context> {
 public:
  IfOp(const OperatorDef& operator_def, Workspace* ws)
      : Operator<Context>(operator_def, ws) {
    CAFFE_ENFORCE(
        this->template HasSingleArgumentOfType<NetDef>("then_net"),
        "then_net must be specified in If operator");
    then_net_def_ =
        this->template GetSingleArgument<NetDef>("then_net", NetDef());
    then_net_ = ws->CreateNet(then_net_def_, true);
    CAFFE_ENFORCE(then_net_, "Failed to initialize then subnet");

    if (this->template HasSingleArgumentOfType<NetDef>("else_net")) {
      else_net_def_ =
          this->template GetSingleArgument<NetDef>("else_net", NetDef());
      else_net_ = ws->CreateNet(else_net_def_, true);
      CAFFE_ENFORCE(else_net_, "Failed to initialize else subnet");
    }
  }

  USE_OPERATOR_CONTEXT_FUNCTIONS;
  bool RunOnDevice() override;

 private:
  NetDef then_net_def_;
  NetBase* then_net_ = nullptr;

  NetDef else_net_def_;
  NetBase* else_net_ = nullptr;
};

} // namespace caffe2

#endif // CAFFE2_OPERATORS_IF_OP_H_