20 struct TableBuilder::Rep {  struct in leveldb::TableBuilder
21   Options options;
22   Options index_block_options;
23   WritableFile* file;
24   uint64_t offset;
25   Status status;
26   BlockBuilder data_block;
27   BlockBuilder index_block;
28   std::string last_key;
29   int64_t num_entries;
30   bool closed;          // Either Finish() or Abandon() has been called.
31   FilterBlockBuilder* filter_block;
42   bool pending_index_entry;
43   BlockHandle pending_handle;  // Handle to add to index block
45   std::string compressed_output;
47   Rep(const Options& opt, WritableFile* f)  in Rep()  argument