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

   1 #ifdef HAVE_CONFIG_H
   2 # include "config.h"
   3 #endif
   4
   5 #include <string.h>
   6
   7 #include "pset.h"
   8 #include "list.h"
   9 #include "iterator.h"
  10
  11
  12 static void *it_pset_start(void *collection)
  13 {
  14         return pset_first(collection);
  15 }
  16
  17 static void *it_pset_next(void *collection, void *curr)
  18 {
  19         return pset_next(collection);
  20 }
  21
  22 static void it_pset_finish(void *collection, void *curr)
  23 {
  24 }
  25
  26 static const iterator_t iterator_pset = {
  27         ITERATOR_MAGIC,
  28         it_pset_start,
  29         it_pset_next,
  30         it_pset_finish
  31 };
  32
  33 const iterator_t *pset_iterator = &iterator_pset;
  34
  35
  36 static void *it_list_next(void *coll, void *it)
  37 {
  38         struct list_head *head = coll;
  39         struct list_head *curr = it;
  40         return curr->next != head ? curr->next : NULL;
  41 }
  42
  43 static void *it_list_start(void *coll)
  44 {
  45         return it_list_next(coll, coll);
  46 }
  47
  48 static void it_list_finish(void *coll, void *curr)
  49 {
  50 }
  51
  52 static const iterator_t iterator_list = {
  53         ITERATOR_MAGIC,
  54         it_list_start,
  55         it_list_next,
  56         it_list_finish
  57 };
  58
  59 const iterator_t *list_iterator = &iterator_list;