Restrict toString to classes only

lampepfl · Oct 15, 2024 · 36208a3 · 36208a3
1 parent 994c995
commit 36208a3
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/main/scala/steps/annotation/toString.scala b/src/main/scala/steps/annotation/toString.scala
@@ -12,6 +12,12 @@ final class toString extends MacroAnnotation:
       case _: ClassDef if toStringSym.overridingSymbol(tree.symbol).exists =>
         report.warning(s"@toString is not necessary since hashcode is defined in ${tree.symbol}")
         List(tree)
+      case cls: ClassDef if cls.symbol.flags.is(Flags.Trait) =>
+        report.error(s"@toString is not supported in traits")
+        List(tree)
+      case cls: ClassDef if cls.symbol.flags.is(Flags.Module) =>
+        report.error(s"@toString is not supported in object")
+        List(tree)
       case ClassDef(className, ctr, parents, self, body) =>
         val cls = tree.symbol