No empty parens for annotations

Tobias Bordenca · Tobias Bordenca · commit 31a8cd790d7f · 2019-01-16T16:30:16.000+01:00
diff --git a/library/src/scala/tasty/reflect/Printers.scala b/library/src/scala/tasty/reflect/Printers.scala
@@ -1557,7 +1557,10 @@ trait Printers
         val Annotation(ref, args) = annot
         this += "@"
         printTypeTree(ref)
-        inParens(printTrees(args, ", "))
+        if (args.isEmpty)
+          this
+        else
+          inParens(printTrees(args, ", "))
       }
 
       def printDefAnnotations(definition: Definition): Buffer = {
