Function NewMergingIterator

src/leveldb/table/merger.cc:179–189

}  // namespace

Iterator* NewMergingIterator(const Comparator* comparator, Iterator** children,
                             int n) {
  assert(n >= 0);
  if (n == 0) {
    return NewEmptyIterator();
  } else if (n == 1) {
    return children[0];
  } else {
    return new MergingIterator(comparator, children, n);
  }
}

}  // namespace leveldb