1 files changed, 13 insertions, 0 deletions
diff --git a/dottydoc/shared/src/main/scala/dotty/tools/dottydoc/util/Traversing.scala b/dottydoc/shared/src/main/scala/dotty/tools/dottydoc/util/Traversing.scala
new file mode 100644
index 000000000..1aa07dec1
--- /dev/null
+++ b/dottydoc/shared/src/main/scala/dotty/tools/dottydoc/util/Traversing.scala
@@ -0,0 +1,13 @@
+package dotty.tools.dottydoc
+package util
+
+object Traversing {
+  import model.Entities._
+
+  def mutateEntities(e: Entity)(trans: Entity => Unit): Unit = e match {
+    case e: Entity with Members =>
+      trans(e)
+      e.members.map(mutateEntities(_)(trans))
+    case e: Entity => trans(e)
+  }
+}