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-rw-r--r--libobjc/objc/deprecated/objc-list.h155
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diff --git a/libobjc/objc/deprecated/objc-list.h b/libobjc/objc/deprecated/objc-list.h
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+/* Generic single linked list to keep various information
+ Copyright (C) 1993, 1994, 1996, 2009 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
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+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;
+}
+
+/* Return the length of a list, list_length(NULL) returns zero */
+
+static inline int
+list_length(struct objc_list* list)
+{
+ int i = 0;
+ while(list)
+ {
+ i += 1;
+ list = list->tail;
+ }
+ return i;
+}
+
+/* Return the Nth element of LIST, where N count from zero. If N
+ larger than the list length, NULL is returned */
+
+static inline void*
+list_nth(int indx, struct objc_list* list)
+{
+ while(indx-- != 0)
+ {
+ if(list->tail)
+ list = list->tail;
+ else
+ return 0;
+ }
+ return list->head;
+}
+
+/* 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)
+ {
+ struct objc_list* tail = (*list)->tail; /* fetch next */
+ *(*list) = *tail; /* copy next to list head */
+ objc_free(tail); /* free next */
+ }
+ else /* only one element in list */
+ {
+ objc_free(*list);
+ (*list) = 0;
+ }
+}
+
+
+/* Remove the element with `car' set to ELEMENT */
+
+static inline void
+list_remove_elem(struct objc_list** list, void* elem)
+{
+ while (*list) {
+ if ((*list)->head == elem)
+ list_remove_head(list);
+ list = &((*list)->tail);
+ }
+}
+
+/* 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;
+ }
+}
+
+/* Return element that has ELEM as car */
+
+static inline struct objc_list**
+list_find(struct objc_list** list, void* elem)
+{
+ while(*list)
+ {
+ if ((*list)->head == elem)
+ return list;
+ list = &((*list)->tail);
+ }
+ return NULL;
+}
+
+/* Free list (backwards recursive) */
+
+static inline void
+list_free(struct objc_list* list)
+{
+ if(list)
+ {
+ list_free(list->tail);
+ objc_free(list);
+ }
+}
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* not __GNU_OBJC_LIST_H */