Method DebugString

src/leveldb/db/version_set.cc:541–565

}

std::string Version::DebugString() const {
  std::string r;
  for (int level = 0; level < config::kNumLevels; level++) {
    // E.g.,
    //   --- level 1 ---
    //   17:123['a' .. 'd']
    //   20:43['e' .. 'g']
    r.append("--- level ");
    AppendNumberTo(&r, level);
    r.append(" ---\n");
    const std::vector<FileMetaData*>& files = files_[level];
    for (size_t i = 0; i < files.size(); i++) {
      r.push_back(' ');
      AppendNumberTo(&r, files[i]->number);
      r.push_back(':');
      AppendNumberTo(&r, files[i]->file_size);
      r.append("[");
      r.append(files[i]->smallest.DebugString());
      r.append(" .. ");
      r.append(files[i]->largest.DebugString());
      r.append("]\n");
    }
  }
  return r;
}

// A helper class so we can efficiently apply a whole sequence
// of edits to a particular state without creating intermediate