mirror of git://gcc.gnu.org/git/gcc.git
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
/* Generic single linked list to keep various information
|
|
Copyright (C) 1993-2013 Free Software Foundation, Inc.
|
|
Contributed by Kresten Krab Thorup.
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3, or (at your option)
|
|
any later version.
|
|
|
|
GCC 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 General Public License for more details.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef __GNU_OBJC_LIST_H
|
|
#define __GNU_OBJC_LIST_H
|
|
|
|
struct objc_list
|
|
{
|
|
void *head;
|
|
struct objc_list *tail;
|
|
};
|
|
|
|
/* Return a cons cell produced from (head . tail). */
|
|
static inline struct objc_list*
|
|
list_cons (void* head, struct objc_list* tail)
|
|
{
|
|
struct objc_list* cell;
|
|
|
|
cell = (struct objc_list*)objc_malloc (sizeof (struct objc_list));
|
|
cell->head = head;
|
|
cell->tail = tail;
|
|
return cell;
|
|
}
|
|
|
|
/* Remove the element at the head by replacing it by its
|
|
successor. */
|
|
static inline void
|
|
list_remove_head (struct objc_list** list)
|
|
{
|
|
if ((*list)->tail)
|
|
{
|
|
/* Fetch next. */
|
|
struct objc_list* tail = (*list)->tail;
|
|
|
|
/* Copy next to list head. */
|
|
*(*list) = *tail;
|
|
|
|
/* Free next. */
|
|
objc_free (tail);
|
|
}
|
|
else
|
|
{
|
|
/* Inly one element in list. */
|
|
objc_free (*list);
|
|
(*list) = 0;
|
|
}
|
|
}
|
|
|
|
|
|
/* Map FUNCTION over all elements in LIST. */
|
|
static inline void
|
|
list_mapcar (struct objc_list* list, void(*function)(void*))
|
|
{
|
|
while (list)
|
|
{
|
|
(*function) (list->head);
|
|
list = list->tail;
|
|
}
|
|
}
|
|
|
|
/* Free list (backwards recursive). */
|
|
static inline void
|
|
list_free (struct objc_list* list)
|
|
{
|
|
if(list)
|
|
{
|
|
list_free (list->tail);
|
|
objc_free (list);
|
|
}
|
|
}
|
|
|
|
#endif /* not __GNU_OBJC_LIST_H */
|