From 4167860e015a779f83a17bc8754c7070bdfba336 Mon Sep 17 00:00:00 2001 From: sanine Date: Fri, 24 Oct 2025 13:40:15 -0500 Subject: add list prepend --- lichen.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) (limited to 'lichen.c') diff --git a/lichen.c b/lichen.c index f028d92..b0b0684 100644 --- a/lichen.c +++ b/lichen.c @@ -79,10 +79,10 @@ void li_free_ll(struct li_ll_t *list, void (*free_data)(void*)) { void li_ll_append(struct li_ll_t *list, void *data) { li_llnode_t *n = li_alloc_llnode(); - n->data = data; if (n == NULL) { return; } + n->data = data; if (list->end != NULL) { list->end->next = n; list->end = n; @@ -93,9 +93,25 @@ void li_ll_append(struct li_ll_t *list, void *data) { list->count += 1; } + +void li_ll_prepend(struct li_ll_t *list, void *data) { + li_llnode_t *n = li_alloc_llnode(); + if (n == NULL) { + return; + } + n->data = data; + if (list->head != NULL) { + n->next = list->head; + list->head = n; + } else { + list->head = n; + list->end = n; + } + list->count += 1; +} + + struct li_ll_t * li_copy_list(struct li_ll_t *list) { list = list; return NULL; } - - -- cgit v1.2.1