move bindingList() definition to Prelude

src/kiss/Helpers.hx

@@ -717,18 +717,7 @@ class Helpers {
     }
 
     public static function bindingList(exp:ReaderExp, forThis:String, allowEmpty = false):Array<ReaderExp> {
-        return switch (exp.def) {
+        return Prelude.bindingList(exp, forThis, allowEmpty);
-            // At macro-time, a list of exps could be passed instead of a ListExp. Handle
-            // that tricky case:
-            case null if (Std.isOfType(exp, Array)):
-                var expList = cast(exp, Array<Dynamic>);
-                var expDynamic:Dynamic = exp;
-                bindingList({pos:expList[0].pos, def: ListExp(expDynamic)}, forThis, allowEmpty);
-            case ListExp(bindingExps) if ((allowEmpty || bindingExps.length > 0) && bindingExps.length % 2 == 0):
-                bindingExps;
-            default:
-                throw KissError.fromExp(exp, '$forThis bindings should be a list or list expression with an even number of sub expressions (at least 2)');
-        };
     }
 
     public static function compileTimeResolveToString(description:String, description2:String, exp:ReaderExp, k:KissState):String {

src/kiss/Prelude.hx

@@ -539,6 +539,21 @@ class Prelude {
         #end
     }
     
+    public static function bindingList(exp:ReaderExp, forThis:String, allowEmpty = false):Array<ReaderExp> {
+        return switch (exp.def) {
+            // At macro-time, a list of exps could be passed instead of a ListExp. Handle
+            // that tricky case:
+            case null if (Std.isOfType(exp, Array)):
+                var expList = cast(exp, Array<Dynamic>);
+                var expDynamic:Dynamic = exp;
+                bindingList({pos:expList[0].pos, def: ListExp(expDynamic)}, forThis, allowEmpty);
+            case ListExp(bindingExps) if ((allowEmpty || bindingExps.length > 0) && bindingExps.length % 2 == 0):
+                bindingExps;
+            default:
+                throw KissError.fromExp(exp, '$forThis bindings should be a list or list expression with an even number of sub expressions (at least 2)');
+        };
+    }
+
     public static function symbolNameValue(s:ReaderExp, allowTyped:Null<Bool> = false, allowMeta:Null<Bool> = false):String {
         return switch (s.def) {
             case Symbol(name): name;