1 files changed, 20 insertions, 1 deletions
diff --git a/src/dotty/tools/dotc/core/UntypedTrees.scala b/src/dotty/tools/dotc/core/UntypedTrees.scala
index 2b1d6a0d6..509c0abfb 100644
--- a/src/dotty/tools/dotc/core/UntypedTrees.scala
+++ b/src/dotty/tools/dotc/core/UntypedTrees.scala
@@ -2,7 +2,7 @@ package dotty.tools.dotc
 package core
 
 import util.Positions._, Types._, Contexts._, Constants._, Names._, Flags._
-import SymDenotations._, Symbols._, StdNames._, Annotations._, Trees._
+import SymDenotations._, Symbols._, StdNames._, Annotations._, Trees._, TypedTrees._
 
 object UntypedTrees {
 
@@ -10,5 +10,24 @@ object UntypedTrees {
 
   }
 
+  import untpd._
+
+  class UGen(implicit ctx: Context) {
+    def constructor(mods: Modifiers, vparamAccessorss: List[List[Tree]], ofTrait: Boolean): DefDef = ???
+
+    def Template(
+      constrMods: Modifiers,
+      vparamAccessorss: List[List[Tree]],
+      parents: List[Tree],
+      self: ValDef,
+      stats: List[Tree],
+      ofTrait: Boolean): Template = {
+      val constr = constructor(constrMods, vparamAccessorss, ofTrait)
+      Trees.Template(parents, self, vparamAccessorss.flatten ++ (constr :: stats))(NoPosition)
+    }
+  }
+
+  def ugen(implicit ctx: Context) =
+    new UGen
 }