disable multiple builder args on reader macros

2021-11-27 20:07:14 -07:00
parent be787d18c0
commit c5fc1033f3
1 changed files with 5 additions and 1 deletions
--- a/kiss/src/kiss/Macros.hx
+++ b/kiss/src/kiss/Macros.hx
@@ -532,7 +532,11 @@ class Macros {
                            case Symbol(s):
                                streamArgName = s;
                            case MetaExp("builder", { pos: _, def: Symbol(b) }):
-                                builderArgName = b;
+                                if (builderArgName == null) {
+                                    builderArgName = b;
+                                } else {
+                                    throw CompileError.fromExp(arg, 'Cannot declare multiple &builder args. Already declared: $builderName');
+                                }
                            default:
                                throw messageForBadArgs;
                        }