reftable/generic.h

   1 /*
   2 Copyright 2020 Google LLC
   3
   4 Use of this source code is governed by a BSD-style
   5 license that can be found in the LICENSE file or at
   6 https://developers.google.com/open-source/licenses/bsd
   7 */
   8
   9 #ifndef GENERIC_H
  10 #define GENERIC_H
  11
  12 #include "record.h"
  13 #include "reftable-generic.h"
  14
  15 /* generic interface to reftables */
  16 struct reftable_table_vtable {
  17         void (*init_iter)(void *tab, struct reftable_iterator *it, uint8_t typ);
  18         uint32_t (*hash_id)(void *tab);
  19         uint64_t (*min_update_index)(void *tab);
  20         uint64_t (*max_update_index)(void *tab);
  21 };
  22
  23 void table_init_iter(struct reftable_table *tab,
  24                      struct reftable_iterator *it,
  25                      uint8_t typ);
  26
  27 struct reftable_iterator_vtable {
  28         int (*seek)(void *iter_arg, struct reftable_record *want);
  29         int (*next)(void *iter_arg, struct reftable_record *rec);
  30         void (*close)(void *iter_arg);
  31 };
  32
  33 void iterator_set_empty(struct reftable_iterator *it);
  34 int iterator_seek(struct reftable_iterator *it, struct reftable_record *want);
  35 int iterator_next(struct reftable_iterator *it, struct reftable_record *rec);
  36
  37 #endif