From d912ee70fff0718440a6f281ccea73aaf8568685 Mon Sep 17 00:00:00 2001
From: Alex Biehl <alexbiehl@gmail.com>
Date: Sun, 4 Jun 2017 11:56:38 +0200
Subject: Use NameSet for isExported check (#632)

---
 haddock-api/src/Haddock/Interface/Create.hs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/haddock-api/src/Haddock/Interface/Create.hs b/haddock-api/src/Haddock/Interface/Create.hs
index 98d4dbe8..36b0b7bb 100644
--- a/haddock-api/src/Haddock/Interface/Create.hs
+++ b/haddock-api/src/Haddock/Interface/Create.hs
@@ -50,6 +50,7 @@ import qualified SrcLoc
 import GHC
 import HscTypes
 import Name
+import NameSet
 import Bag
 import RdrName
 import TcRnTypes
@@ -651,9 +652,8 @@ mkExportItems
         sub_names = map fst subs'
         fixities = [ (n, f) | n <- name:sub_names, Just f <- [M.lookup n fixMap] ]
 
-
-    isExported = (`elem` exportedNames)
-
+    exportedNameSet = mkNameSet exportedNames
+    isExported n = elemNameSet n exportedNameSet
 
     findDecl :: Name -> ErrMsgGhc ([LHsDecl Name], (DocForDecl Name, [(Name, DocForDecl Name)]))
     findDecl n
-- 
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