mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/* Implement twalk using twalk_r.
|
|
Copyright (C) 2019-2020 Free Software Foundation, Inc.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <search.h>
|
|
|
|
struct twalk_with_twalk_r_closure
|
|
{
|
|
void (*action) (const void *, VISIT, int);
|
|
int depth;
|
|
};
|
|
|
|
static void
|
|
twalk_with_twalk_r_action (const void *nodep, VISIT which, void *closure0)
|
|
{
|
|
struct twalk_with_twalk_r_closure *closure = closure0;
|
|
|
|
switch (which)
|
|
{
|
|
case leaf:
|
|
closure->action (nodep, which, closure->depth);
|
|
break;
|
|
case preorder:
|
|
closure->action (nodep, which, closure->depth);
|
|
++closure->depth;
|
|
break;
|
|
case postorder:
|
|
/* The preorder action incremented the depth. */
|
|
closure->action (nodep, which, closure->depth - 1);
|
|
break;
|
|
case endorder:
|
|
--closure->depth;
|
|
closure->action (nodep, which, closure->depth);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
twalk (const void *root, void (*action) (const void *, VISIT, int))
|
|
{
|
|
struct twalk_with_twalk_r_closure closure = { action, 0 };
|
|
twalk_r (root, twalk_with_twalk_r_action, &closure);
|
|
}
|