From 84dafda0e40eef81d54408fa6b7e58d757492678 Mon Sep 17 00:00:00 2001
From: Irmen de Jong <irmen@razorvine.net>
Date: Tue, 9 Nov 2021 22:19:07 +0100
Subject: [PATCH] fix error message for type mismatch on builtin-function
 parameter

---
 .../compiler/astprocessing/VerifyFunctionArgTypes.kt     | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/compiler/src/prog8/compiler/astprocessing/VerifyFunctionArgTypes.kt b/compiler/src/prog8/compiler/astprocessing/VerifyFunctionArgTypes.kt
index 6b1c31050..46838ce87 100644
--- a/compiler/src/prog8/compiler/astprocessing/VerifyFunctionArgTypes.kt
+++ b/compiler/src/prog8/compiler/astprocessing/VerifyFunctionArgTypes.kt
@@ -83,8 +83,13 @@ class VerifyFunctionArgTypes(val program: Program) : IAstVisitor {
                     val anyCompatible = pair.second.any { argTypeCompatible(pair.first, it) }
                     if (!anyCompatible) {
                         val actual = pair.first.toString()
-                        val expected = pair.second.toString()
-                        return "argument ${index + 1} type mismatch, was: $actual expected: $expected"
+                        return if(pair.second.size==1) {
+                            val expected = pair.second[0].toString()
+                            "argument ${index + 1} type mismatch, was: $actual expected: $expected"
+                        } else {
+                            val expected = pair.second.toList().toString()
+                            "argument ${index + 1} type mismatch, was: $actual expected one of: $expected"
+                        }
                     }
                 }
             }