diff options
Diffstat (limited to 'src/list.h')
| -rw-r--r-- | src/list.h | 21 |
1 files changed, 16 insertions, 5 deletions
@@ -79,6 +79,7 @@ #define BFS_LIST_H #include <stddef.h> +#include <string.h> /** * Initialize a singly-linked list. @@ -250,17 +251,27 @@ * A pointer to the item to remove, either &list->head or &prev->next. * @param node (optional) * If specified, use item->node.next rather than item->next. + * @return + * The removed item. */ #define SLIST_REMOVE(list, ...) SLIST_REMOVE_(list, __VA_ARGS__, ) #define SLIST_REMOVE_(list, cursor, ...) \ - LIST_BLOCK_(SLIST_REMOVE__((list), (cursor), LIST_NEXT_(__VA_ARGS__))) + SLIST_REMOVE__((list), (cursor), LIST_NEXT_(__VA_ARGS__)) #define SLIST_REMOVE__(list, cursor, next) \ - void *_next = (void *)(*cursor)->next; \ - (*cursor)->next = NULL; \ - *cursor = _next; \ - list->tail = _next ? list->tail : cursor; + (list->tail = (*cursor)->next ? list->tail : cursor, \ + slist_remove_impl(*cursor, cursor, &(*cursor)->next, list->tail, sizeof(*cursor))) + +// Helper for SLIST_REMOVE() +static inline void *slist_remove_impl(void *ret, void *cursor, void *next, void *tail, size_t size) { + // ret = *cursor; + // *cursor = ret->next; + memcpy(cursor, next, size); + // ret->next = *list->tail; (NULL) + memcpy(next, tail, size); + return ret; +} /** * Pop the head off a singly-linked list. |