#include <sys/cdefs.h>
#if 0
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: twalk.c,v 1.1 1999/02/22 10:33:16 christos Exp $");
#endif
#endif
__FBSDID("$FreeBSD: src/lib/libc/stdlib/twalk.c,v 1.5 2003/01/05 02:43:18 tjr Exp $");
#define _SEARCH_PRIVATE
#include <search.h>
#include <stdlib.h>
static void trecurse(const node_t *,
void (*action)(const void *, VISIT, int), int level);
static void
trecurse(root, action, level)
const node_t *root;
void (*action)(const void *, VISIT, int);
int level;
{
if (root->llink == NULL && root->rlink == NULL)
(*action)(root, leaf, level);
else {
(*action)(root, preorder, level);
if (root->llink != NULL)
trecurse(root->llink, action, level + 1);
(*action)(root, postorder, level);
if (root->rlink != NULL)
trecurse(root->rlink, action, level + 1);
(*action)(root, endorder, level);
}
}
void
twalk(vroot, action)
const void *vroot;
void (*action)(const void *, VISIT, int);
{
if (vroot != NULL && action != NULL)
trecurse(vroot, action, 0);
}