1 files changed, 38 insertions, 1 deletions
diff --git a/src/Haddock/Types.hs b/src/Haddock/Types.hs
index 05fc9747..9be46748 100644
--- a/src/Haddock/Types.hs
+++ b/src/Haddock/Types.hs
@@ -1,5 +1,5 @@
-{-# OPTIONS_HADDOCK hide #-}
 {-# LANGUAGE DeriveDataTypeable, DeriveFunctor #-}
+{-# OPTIONS_GHC -fno-warn-orphans #-}
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  Haddock.Types
@@ -22,6 +22,7 @@ module Haddock.Types (
 
 import Control.Exception
 import Control.Arrow
+import Control.DeepSeq
 import Data.Typeable
 import Data.Map (Map)
 import Data.Maybe
@@ -316,18 +317,54 @@ instance Monoid (Doc id) where
   mappend = DocAppend
 
 
+instance NFData a => NFData (Doc a) where
+  rnf doc = case doc of
+    DocEmpty                  -> ()
+    DocAppend a b             -> a `deepseq` b `deepseq` ()
+    DocString a               -> a `deepseq` ()
+    DocParagraph a            -> a `deepseq` ()
+    DocIdentifier a           -> a `deepseq` ()
+    DocIdentifierUnchecked a  -> a `deepseq` ()
+    DocModule a               -> a `deepseq` ()
+    DocWarning a              -> a `deepseq` ()
+    DocEmphasis a             -> a `deepseq` ()
+    DocMonospaced a           -> a `deepseq` ()
+    DocUnorderedList a        -> a `deepseq` ()
+    DocOrderedList a          -> a `deepseq` ()
+    DocDefList a              -> a `deepseq` ()
+    DocCodeBlock a            -> a `deepseq` ()
+    DocHyperlink a            -> a `deepseq` ()
+    DocPic a                  -> a `deepseq` ()
+    DocAName a                -> a `deepseq` ()
+    DocProperty a             -> a `deepseq` ()
+    DocExamples a             -> a `deepseq` ()
+
+
+instance NFData Name
+instance NFData OccName
+instance NFData ModuleName
+
+
 data Hyperlink = Hyperlink
   { hyperlinkUrl   :: String
   , hyperlinkLabel :: Maybe String
   } deriving (Eq, Show)
 
 
+instance NFData Hyperlink where
+  rnf (Hyperlink a b) = a `deepseq` b `deepseq` ()
+
+
 data Example = Example
   { exampleExpression :: String
   , exampleResult     :: [String]
   } deriving (Eq, Show)
 
 
+instance NFData Example where
+  rnf (Example a b) = a `deepseq` b `deepseq` ()
+
+
 exampleToString :: Example -> String
 exampleToString (Example expression result) =
     ">>> " ++ expression ++ "\n" ++  unlines result