|
111
|
1 /* Generic single linked list to keep various information
|
|
145
|
2 Copyright (C) 1993-2020 Free Software Foundation, Inc.
|
|
111
|
3 Contributed by Kresten Krab Thorup.
|
|
|
4
|
|
|
5 This file is part of GCC.
|
|
|
6
|
|
|
7 GCC is free software; you can redistribute it and/or modify
|
|
|
8 it under the terms of the GNU General Public License as published by
|
|
|
9 the Free Software Foundation; either version 3, or (at your option)
|
|
|
10 any later version.
|
|
|
11
|
|
|
12 GCC is distributed in the hope that it will be useful,
|
|
|
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
15 GNU General Public License for more details.
|
|
|
16
|
|
|
17 Under Section 7 of GPL version 3, you are granted additional
|
|
|
18 permissions described in the GCC Runtime Library Exception, version
|
|
|
19 3.1, as published by the Free Software Foundation.
|
|
|
20
|
|
|
21 You should have received a copy of the GNU General Public License and
|
|
|
22 a copy of the GCC Runtime Library Exception along with this program;
|
|
|
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
|
24 <http://www.gnu.org/licenses/>. */
|
|
|
25
|
|
|
26 #ifndef __GNU_OBJC_LIST_H
|
|
|
27 #define __GNU_OBJC_LIST_H
|
|
|
28
|
|
|
29 struct objc_list
|
|
|
30 {
|
|
|
31 void *head;
|
|
|
32 struct objc_list *tail;
|
|
|
33 };
|
|
|
34
|
|
|
35 /* Return a cons cell produced from (head . tail). */
|
|
|
36 static inline struct objc_list*
|
|
|
37 list_cons (void* head, struct objc_list* tail)
|
|
|
38 {
|
|
|
39 struct objc_list* cell;
|
|
|
40
|
|
|
41 cell = (struct objc_list*)objc_malloc (sizeof (struct objc_list));
|
|
|
42 cell->head = head;
|
|
|
43 cell->tail = tail;
|
|
|
44 return cell;
|
|
|
45 }
|
|
|
46
|
|
|
47 /* Remove the element at the head by replacing it by its
|
|
|
48 successor. */
|
|
|
49 static inline void
|
|
|
50 list_remove_head (struct objc_list** list)
|
|
|
51 {
|
|
|
52 if ((*list)->tail)
|
|
|
53 {
|
|
|
54 /* Fetch next. */
|
|
|
55 struct objc_list* tail = (*list)->tail;
|
|
|
56
|
|
|
57 /* Copy next to list head. */
|
|
|
58 *(*list) = *tail;
|
|
|
59
|
|
|
60 /* Free next. */
|
|
|
61 objc_free (tail);
|
|
|
62 }
|
|
|
63 else
|
|
|
64 {
|
|
|
65 /* Inly one element in list. */
|
|
|
66 objc_free (*list);
|
|
|
67 (*list) = 0;
|
|
|
68 }
|
|
|
69 }
|
|
|
70
|
|
|
71
|
|
|
72 /* Map FUNCTION over all elements in LIST. */
|
|
|
73 static inline void
|
|
|
74 list_mapcar (struct objc_list* list, void(*function)(void*))
|
|
|
75 {
|
|
|
76 while (list)
|
|
|
77 {
|
|
|
78 (*function) (list->head);
|
|
|
79 list = list->tail;
|
|
|
80 }
|
|
|
81 }
|
|
|
82
|
|
|
83 /* Free list (backwards recursive). */
|
|
|
84 static inline void
|
|
|
85 list_free (struct objc_list* list)
|
|
|
86 {
|
|
|
87 if(list)
|
|
|
88 {
|
|
|
89 list_free (list->tail);
|
|
|
90 objc_free (list);
|
|
|
91 }
|
|
|
92 }
|
|
|
93
|
|
|
94 #endif /* not __GNU_OBJC_LIST_H */
|
