From 573c0068766e6da82f89e32e2eca973284bda313 Mon Sep 17 00:00:00 2001
From: Nat Quayle Nelson <natquaylenelson@gmail.com>
Date: Fri, 16 Dec 2022 00:35:03 +0000
Subject: [PATCH] Helpers.argList allow check for empty list

---
 kiss/src/kiss/Helpers.hx | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/kiss/src/kiss/Helpers.hx b/kiss/src/kiss/Helpers.hx
index 8b206c62..d23abebd 100644
--- a/kiss/src/kiss/Helpers.hx
+++ b/kiss/src/kiss/Helpers.hx
@@ -705,8 +705,12 @@ class Helpers {
         };
     }
 
-    public static function argList(exp:ReaderExp, forThis:String):Array<ReaderExp> {
+    public static function argList(exp:ReaderExp, forThis:String, allowEmpty = true):Array<ReaderExp> {
         return switch (exp.def) {
+            case ListExp([]) if (allowEmpty):
+                [];
+            case ListExp([]) if (!allowEmpty):
+                throw KissError.fromExp(exp, 'arg list for $forThis must not be empty');
             case ListExp(argExps):
                 argExps;
             default: