array: add helper functions for LIFO usage

1 files changed, 18 insertions, 0 deletions

diff --git a/array.c b/array.c
index b65ad12..824154a 100644
--- a/array.c
+++ b/array.c
@@ -151,3 +151,21 @@ bool array_resize(Array *arr, size_t len) {
 void array_sort(Array *arr, int (*compar)(const void*, const void*)) {
 	qsort(arr->items, arr->len, arr->elem_size, compar);
 }
+
+bool array_push(Array *arr, void *item) {
+	return array_add(arr, item);
+}
+
+void *array_pop(Array *arr) {
+	void *item = array_peek(arr);
+	if (!item)
+		return NULL;
+	arr->len--;
+	return item;
+}
+
+void *array_peek(Array *arr) {
+	if (arr->len == 0)
+		return NULL;
+	return array_get(arr, arr->len - 1);
+}