1 files changed, 17 insertions, 0 deletions
diff --git a/haddock-api/src/Haddock/Types.hs b/haddock-api/src/Haddock/Types.hs
index 76164b5e..c5ca31c0 100644
--- a/haddock-api/src/Haddock/Types.hs
+++ b/haddock-api/src/Haddock/Types.hs
@@ -301,6 +301,23 @@ instance NamedThing DocName where
   getName (Undocumented name) = name
 
 
+class NamedThing name => SetName name where
+
+    setName :: Name -> name -> name
+
+
+instance SetName Name where
+
+    setName name' _ = name'
+
+
+instance SetName DocName where
+
+    setName name' (Documented _ mdl) = Documented name' mdl
+    setName name' (Undocumented _) = Undocumented name'
+
+
+
 -----------------------------------------------------------------------------
 -- * Instances
 -----------------------------------------------------------------------------