Method ParseNextKey

src/leveldb/table/block.cc:225–252

  }

  bool ParseNextKey() {
    current_ = NextEntryOffset();
    const char* p = data_ + current_;
    const char* limit = data_ + restarts_;  // Restarts come right after data
    if (p >= limit) {
      // No more entries to return.  Mark as invalid.
      current_ = restarts_;
      restart_index_ = num_restarts_;
      return false;
    }

    // Decode next entry
    uint32_t shared, non_shared, value_length;
    p = DecodeEntry(p, limit, &shared, &non_shared, &value_length);
    if (p == nullptr || key_.size() < shared) {
      CorruptionError();
      return false;
    } else {
      key_.resize(shared);
      key_.append(p, non_shared);
      value_ = Slice(p + non_shared, value_length);
      while (restart_index_ + 1 < num_restarts_ &&
             GetRestartPoint(restart_index_ + 1) < current_) {
        ++restart_index_;
      }
      return true;
    }
  }
};

Iterator* Block::NewIterator(const Comparator* comparator) {