From 38a54455d7b87390724039d3b00f9c91d3bc24d8 Mon Sep 17 00:00:00 2001
From: JFronny <git@akbvopenfl1.hopto.org>
Date: Wed, 24 Apr 2024 16:10:17 +0200
Subject: [PATCH] fix(serialize-generator): Print a better error message

---
 .../commons/serialize/generator/SerializeGeneratorProcessor.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/commons-serialize-generator/src/main/java/io/gitlab/jfronny/commons/serialize/generator/SerializeGeneratorProcessor.java b/commons-serialize-generator/src/main/java/io/gitlab/jfronny/commons/serialize/generator/SerializeGeneratorProcessor.java
index 252a036..9fe1f1e 100644
--- a/commons-serialize-generator/src/main/java/io/gitlab/jfronny/commons/serialize/generator/SerializeGeneratorProcessor.java
+++ b/commons-serialize-generator/src/main/java/io/gitlab/jfronny/commons/serialize/generator/SerializeGeneratorProcessor.java
@@ -115,6 +115,7 @@ public class SerializeGeneratorProcessor extends AbstractProcessor2 {
                                     case "adapter" -> {
                                         if (bld.adapter != null) throw new IllegalArgumentException("Duplicate annotation parameter: adapter");
                                         if (value.getValue() instanceof TypeMirror tm) bld.adapter = tm;
+                                        else if (value.getValue() instanceof String s && s.equals("<error>")) throw new IllegalArgumentException("Unexpected value type on " + element + ". Did you forget to import it?");
                                         else throw new IllegalArgumentException("Unexpected value type: " + value.getValue().getClass() + " (with value " + value.getValue() + ") on " + element);
                                     }
                                     case "nullSafe" -> {