1 files changed, 13 insertions, 13 deletions
diff --git a/src/main/scala/firrtl/WIR.scala b/src/main/scala/firrtl/WIR.scala
index cda22d27..aeb4f4c2 100644
--- a/src/main/scala/firrtl/WIR.scala
+++ b/src/main/scala/firrtl/WIR.scala
@@ -69,9 +69,9 @@ case object WVoid extends Expression {
   def mapExpr(f: Expression => Expression): Expression = this
   def mapType(f: Type => Type): Expression = this
   def mapWidth(f: Width => Width): Expression = this
-  def foreachExpr(f: Expression => Unit): Unit = Unit
-  def foreachType(f: Type => Unit): Unit = Unit
-  def foreachWidth(f: Width => Unit): Unit = Unit
+  def foreachExpr(f: Expression => Unit): Unit = ()
+  def foreachType(f: Type => Unit): Unit = ()
+  def foreachWidth(f: Width => Unit): Unit = ()
 }
 case object WInvalid extends Expression {
   def tpe = UnknownType
@@ -79,9 +79,9 @@ case object WInvalid extends Expression {
   def mapExpr(f: Expression => Expression): Expression = this
   def mapType(f: Type => Type): Expression = this
   def mapWidth(f: Width => Width): Expression = this
-  def foreachExpr(f: Expression => Unit): Unit = Unit
-  def foreachType(f: Type => Unit): Unit = Unit
-  def foreachWidth(f: Width => Unit): Unit = Unit
+  def foreachExpr(f: Expression => Unit): Unit = ()
+  def foreachType(f: Type => Unit): Unit = ()
+  def foreachWidth(f: Width => Unit): Unit = ()
 }
 // Useful for splitting then remerging references
 case object EmptyExpression extends Expression {
@@ -90,9 +90,9 @@ case object EmptyExpression extends Expression {
   def mapExpr(f: Expression => Expression): Expression = this
   def mapType(f: Type => Type): Expression = this
   def mapWidth(f: Width => Width): Expression = this
-  def foreachExpr(f: Expression => Unit): Unit = Unit
-  def foreachType(f: Type => Unit): Unit = Unit
-  def foreachWidth(f: Width => Unit): Unit = Unit
+  def foreachExpr(f: Expression => Unit): Unit = ()
+  def foreachType(f: Type => Unit): Unit = ()
+  def foreachWidth(f: Width => Unit): Unit = ()
 }
 
 object WDefInstance {
@@ -117,7 +117,7 @@ case class WDefInstanceConnector(
   def mapType(f: Type => Type): Statement = this.copy(tpe = f(tpe))
   def mapString(f: String => String): Statement = this.copy(name = f(name))
   def mapInfo(f: Info => Info): Statement = this.copy(f(info))
-  def foreachStmt(f: Statement => Unit): Unit = Unit
+  def foreachStmt(f: Statement => Unit): Unit = ()
   def foreachExpr(f: Expression => Unit): Unit = portCons foreach { case (e1, e2) => (f(e1), f(e2)) }
   def foreachType(f: Type => Unit): Unit = f(tpe)
   def foreachString(f: String => Unit): Unit = f(name)
@@ -338,8 +338,8 @@ case class CDefMemory(
   def mapType(f: Type => Type): Statement = this.copy(tpe = f(tpe))
   def mapString(f: String => String): Statement = this.copy(name = f(name))
   def mapInfo(f: Info => Info): Statement = this.copy(f(info))
-  def foreachStmt(f: Statement => Unit): Unit = Unit
-  def foreachExpr(f: Expression => Unit): Unit = Unit
+  def foreachStmt(f: Statement => Unit): Unit = ()
+  def foreachExpr(f: Expression => Unit): Unit = ()
   def foreachType(f: Type => Unit): Unit = f(tpe)
   def foreachString(f: String => Unit): Unit = f(name)
   def foreachInfo(f: Info => Unit): Unit = f(info)
@@ -359,7 +359,7 @@ case class CDefMPort(info: Info,
   def mapType(f: Type => Type): Statement = this.copy(tpe = f(tpe))
   def mapString(f: String => String): Statement = this.copy(name = f(name))
   def mapInfo(f: Info => Info): Statement = this.copy(f(info))
-  def foreachStmt(f: Statement => Unit): Unit = Unit
+  def foreachStmt(f: Statement => Unit): Unit = ()
   def foreachExpr(f: Expression => Unit): Unit = exps.foreach(f)
   def foreachType(f: Type => Unit): Unit = f(tpe)
   def foreachString(f: String => Unit): Unit = f(name)