Method parent

cpp/src/arrow/filesystem/s3fs.cc:522–529

  }

  S3Path parent() const {
    DCHECK(!key_parts.empty());
    auto parent = S3Path{"", bucket, "", key_parts};
    parent.key_parts.pop_back();
    parent.key = internal::JoinAbstractPath(parent.key_parts);
    parent.full_path = parent.bucket + kSep + parent.key;
    return parent;
  }

  bool has_parent() const { return !key.empty(); }