/*!
*  Copyright (c) 2017 by Contributors
* \file op_util.h
* \brief operator helper functions
* \author Chris Olivier
*/

#ifndef CPP_PACKAGE_INCLUDE_MXNET_CPP_OP_UTIL_H_
#define CPP_PACKAGE_INCLUDE_MXNET_CPP_OP_UTIL_H_

#include <string>

#if defined(MXNET_USE_CAFFE) && MXNET_USE_CAFFE != 0
#include <caffe/proto/caffe.pb.h>
#include <google/protobuf/text_format.h>
#endif

namespace mxnet {
namespace cpp {

#if defined(MXNET_USE_CAFFE) && MXNET_USE_CAFFE != 0

inline ::caffe::LayerParameter textToCaffeLayerParameter(const std::string& text) {
  caffe::NetParameter np;
  const bool success = google::protobuf::TextFormat::ParseFromString(text, &np);
  CHECK_EQ(success, true) << "Invalid protpbuf layer string: " << text;
  return ::caffe::LayerParameter(np.layer(0));
}

template<typename StreamType>
inline StreamType& operator << (StreamType& os, const ::caffe::LayerParameter& op) {
  std::string s;
  caffe::NetParameter np;
  // Avoid wasting time making a copy -- just push in out default object's pointer
  np.mutable_layer()->AddAllocated(const_cast<::caffe::LayerParameter *>(&op));
  google::protobuf::TextFormat::PrintToString(np, &s);
  np.mutable_layer()->ReleaseLast();
  os << s;
  return os;
}
#endif

}  // namespace cpp
}  // namespace mxnet

#endif  // CPP_PACKAGE_INCLUDE_MXNET_CPP_OP_UTIL_H_