src/search/twalk.c

   1 #include <search.h>
   2 #include "tsearch.h"
   3
   4 static void walk(const struct node *r, void (*action)(const void *, VISIT, int), int d)
   5 {
   6         if (!r)
   7                 return;
   8         if (r->h == 1)
   9                 action(r, leaf, d);
  10         else {
  11                 action(r, preorder, d);
  12                 walk(r->a[0], action, d+1);
  13                 action(r, postorder, d);
  14                 walk(r->a[1], action, d+1);
  15                 action(r, endorder, d);
  16         }
  17 }
  18
  19 void twalk(const void *root, void (*action)(const void *, VISIT, int))
  20 {
  21         walk(root, action, 0);
  22 }