lib: optimize length() for objects

Instead of counting the keys individually, use the existing
json_object_object_length() function.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 1 insertions, 10 deletions

diff --git a/lib.c b/lib.c
index af94e9a..cdae0e0 100644
--- a/lib.c
+++ b/lib.c
@@ -368,19 +368,10 @@ static struct json_object *
 ut_length(struct ut_state *s, uint32_t off, struct json_object *args)
 {
 	struct json_object *arg = json_object_array_get_idx(args, 0);
-	size_t len;
 
 	switch (json_object_get_type(arg)) {
 	case json_type_object:
-		len = 0;
-
-		json_object_object_foreach(arg, k, v) {
-			(void)k;
-			(void)v;
-			len++;
-		}
-
-		return xjs_new_int64(len);
+		return xjs_new_int64(json_object_object_length(arg));
 
 	case json_type_array:
 		return xjs_new_int64(json_object_array_length(arg));