Make return value of Serializer.lazily lazy (#2627)HEADmaster1.6.x

Directly subclassing Iterable is lazy-ish, but if you call any operation
on the resulting value (eg. map or ++) it will evaluate the Iterable and
return a List.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/scala/firrtl/ir/Serializer.scala b/src/main/scala/firrtl/ir/Serializer.scala
index 3ef9a96b..cf919b37 100644
--- a/src/main/scala/firrtl/ir/Serializer.scala
+++ b/src/main/scala/firrtl/ir/Serializer.scala
@@ -69,7 +69,7 @@ object Serializer {
       case n: Circuit   => sIt(n)(indent)
       case other => Iterator(serialize(other, indent))
     }
-  }
+  }.view // TODO replace .view with constructing a view directly above, but must drop 2.12 first.
 
   /** Converts a `Constraint` into its string representation. */
   def serialize(con: Constraint): String = {