nsz Git - libfirm/blob - ir/adt/iterator.c

   1
   2 #include <string.h>
   3
   4 #include "pset.h"
   5 #include "list.h"
   6 #include "iterator.h"
   7
   8
   9 static void *it_pset_start(void *collection)
  10 {
  11         return pset_first(collection);
  12 }
  13
  14 static void *it_pset_next(void *collection, void *curr)
  15 {
  16         return pset_next(collection);
  17 }
  18
  19 static void it_pset_finish(void *collection, void *curr)
  20 {
  21 }
  22
  23 static const iterator_t iterator_pset = {
  24         ITERATOR_MAGIC,
  25         it_pset_start,
  26         it_pset_next,
  27         it_pset_finish
  28 };
  29
  30 const iterator_t *pset_iterator = &iterator_pset;
  31
  32
  33 static void *it_list_next(void *coll, void *it)
  34 {
  35         struct list_head *head = coll;
  36         struct list_head *curr = it;
  37         return curr->next != head ? curr->next : NULL;
  38 }
  39
  40 static void *it_list_start(void *coll)
  41 {
  42         return it_list_next(coll, coll);
  43 }
  44
  45 static void it_list_finish(void *coll, void *curr)
  46 {
  47 }
  48
  49 static const iterator_t iterator_list = {
  50         ITERATOR_MAGIC,
  51         it_list_start,
  52         it_list_next,
  53         it_list_finish
  54 };
  55
  56 const iterator_t *list_iterator = &iterator_list;