text: #ifndef SRC_DELTA_H_
  #define SRC_DELTA_H_
  
  #include "object/router_key.h"
  #include "rtr/db/roa.h"
  #include "rtr/db/vrp.h"
  
  struct deltas;
  
  int deltas_create(struct deltas **);
  void deltas_refget(struct deltas *);
  void deltas_refput(struct deltas *);
  
  int deltas_add_roa_v4(struct deltas *, uint32_t, struct v4_address *, int);
  int deltas_add_roa_v6(struct deltas *, uint32_t, struct v6_address *, int);
  int deltas_add_router_key(struct deltas *, struct router_key *, int);
  
  bool deltas_is_empty(struct deltas *);
  int deltas_foreach(serial_t, struct deltas *, delta_vrp_foreach_cb,
      delta_router_key_foreach_cb, void *);
  
  #endif /* SRC_DELTA_H_ */
  