add @nowarn for exhaustiveness on a function I can't really comprehend

guardian · Nov 9, 2023 · a70f6a1 · a70f6a1
1 parent 0001b92
commit a70f6a1
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/riff-raff/app/utils/Retriable.scala b/riff-raff/app/utils/Retriable.scala
@@ -1,15 +1,17 @@
 package utils
 
 import play.api.Logger
-import scala.util.{Try, Success, Failure}
-import scala.annotation.tailrec
+
+import scala.util.{Failure, Success, Try}
+import scala.annotation.{nowarn, tailrec}
 
 trait Retriable {
   def log: Logger
 
   def retryUpTo[T](maxAttempts: Int, message: Option[String] = None)(
       thunk: => T
   ): Try[T] = {
+    @nowarn // It would fail on the following inputs: Cons(), Empty
     @tailrec def go(s: Stream[Try[T]], n: Int): Try[T] = s match {
       case (f @ Failure(t)) #:: tail =>
         val errorMessage = "Caught exception %s (attempt #%d)".format(