API Cleanup - Width

Add simple documentation
trait Width -> abstract class Width
case class UnknownWidth -> case object UnknownWidth

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/scala/firrtl/passes/Passes.scala b/src/main/scala/firrtl/passes/Passes.scala
index 0243c6cd..42b51268 100644
--- a/src/main/scala/firrtl/passes/Passes.scala
+++ b/src/main/scala/firrtl/passes/Passes.scala
@@ -159,7 +159,7 @@ object InferTypes extends Pass {
    }
    def remove_unknowns_w (w:Width)(implicit namespace: Namespace):Width = {
       w match {
-         case w:UnknownWidth => VarWidth(namespace.newName("w"))
+         case UnknownWidth => VarWidth(namespace.newName("w"))
          case w => w
       }
    }