1 files changed, 10 insertions, 0 deletions
diff --git a/src/dotty/tools/dotc/core/TypeOps.scala b/src/dotty/tools/dotc/core/TypeOps.scala
index 77c6805f0..aa643256c 100644
--- a/src/dotty/tools/dotc/core/TypeOps.scala
+++ b/src/dotty/tools/dotc/core/TypeOps.scala
@@ -5,6 +5,7 @@ package core
 import Contexts._, Types._, Symbols._, Names._, Flags._, Scopes._
 import SymDenotations._, Denotations.Denotation
 import config.Printers._
+import util.Positions._
 import Decorators._
 import StdNames._
 import util.SimpleMap
@@ -572,6 +573,15 @@ trait TypeOps { this: Context => // TODO: Make standalone object.
   /** Is auto-tupling enabled? */
   def canAutoTuple =
     !featureEnabled(defn.LanguageModuleClass, nme.noAutoTupling)
+
+  def scala2Mode =
+    featureEnabled(defn.LanguageModuleClass, nme.Scala2)
+
+  def testScala2Mode(msg: String, pos: Position) = {
+    if (scala2Mode) migrationWarning(msg, pos)
+    scala2Mode
+  }
+
 }
 
 object TypeOps {