-warnUnusedName :: (Name, Maybe Provenance) -> RnM ()
-warnUnusedName (name, prov)
- = addWarnAt loc $
+warnUnusedName :: (Name, Provenance) -> RnM ()
+warnUnusedName (name, LocalDef)
+ = addUnusedWarning name (srcLocSpan (nameSrcLoc name))
+ (ptext SLIT("Defined but not used"))
+
+warnUnusedName (name, Imported is)
+ = mapM_ warn is
+ where
+ warn spec = addUnusedWarning name span msg
+ where
+ span = importSpecLoc spec
+ pp_mod = quotes (ppr (importSpecModule spec))
+ msg = ptext SLIT("Imported from") <+> pp_mod <+> ptext SLIT("but not used")
+
+addUnusedWarning name span msg
+ = addWarnAt span $