Method CopyFrom

src/io/bin.cpp:560–588

  }

  void BinMapper::CopyFrom(const char * buffer) {
    std::memcpy(&num_bin_, buffer, sizeof(num_bin_));
    buffer += sizeof(num_bin_);
    std::memcpy(&missing_type_, buffer, sizeof(missing_type_));
    buffer += sizeof(missing_type_);
    std::memcpy(&is_trivial_, buffer, sizeof(is_trivial_));
    buffer += sizeof(is_trivial_);
    std::memcpy(&sparse_rate_, buffer, sizeof(sparse_rate_));
    buffer += sizeof(sparse_rate_);
    std::memcpy(&bin_type_, buffer, sizeof(bin_type_));
    buffer += sizeof(bin_type_);
    std::memcpy(&min_val_, buffer, sizeof(min_val_));
    buffer += sizeof(min_val_);
    std::memcpy(&max_val_, buffer, sizeof(max_val_));
    buffer += sizeof(max_val_);
    std::memcpy(&default_bin_, buffer, sizeof(default_bin_));
    buffer += sizeof(default_bin_);
    if (bin_type_ == BinType::NumericalBin) {
      bin_upper_bound_ = std::vector<double>(num_bin_);
      std::memcpy(bin_upper_bound_.data(), buffer, num_bin_ * sizeof(double));
    } else {
      bin_2_categorical_ = std::vector<int>(num_bin_);
      std::memcpy(bin_2_categorical_.data(), buffer, num_bin_ * sizeof(int));
      categorical_2_bin_.clear();
      for (int i = 0; i < num_bin_; ++i) {
        categorical_2_bin_[bin_2_categorical_[i]] = static_cast<unsigned int>(i);
      }
    }
  }

  void BinMapper::SaveBinaryToFile(const VirtualFileWriter* writer) const {
    writer->Write(&num_bin_, sizeof(num_bin_));