X-Git-Url: http://git.cielonegro.org/gitweb.cgi?a=blobdiff_plain;f=Network%2FHTTP%2FLucu%2FETag.hs;h=13357383941c983896e7481c24f627c5264f4b85;hb=cc074d0;hp=d87100095a71e78cafeba5435cdf02c397111b26;hpb=e49345ce5e6c0190c826d130d51ec42ee9f09a67;p=Lucu.git

diff --git a/Network/HTTP/Lucu/ETag.hs b/Network/HTTP/Lucu/ETag.hs
index d871000..1335738 100644
--- a/Network/HTTP/Lucu/ETag.hs
+++ b/Network/HTTP/Lucu/ETag.hs
@@ -1,8 +1,11 @@
 {-# LANGUAGE
-    OverloadedStrings
+    DeriveDataTypeable
+  , OverloadedStrings
+  , RecordWildCards
+  , TemplateHaskell
   , UnicodeSyntax
   #-}
--- |Entity tags
+-- |An internal module for entity tags.
 module Network.HTTP.Lucu.ETag
     ( ETag(..)
     , parseETag
@@ -19,7 +22,9 @@ import Control.Monad
 import Data.Ascii (Ascii, AsciiBuilder)
 import qualified Data.Ascii as A
 import Data.Attoparsec.Char8
+import Data.Data
 import Data.Monoid.Unicode
+import Language.Haskell.TH.Syntax
 import Network.HTTP.Lucu.Parser
 import Network.HTTP.Lucu.Parser.Http hiding (token)
 import Network.HTTP.Lucu.Utils
@@ -34,7 +39,15 @@ data ETag = ETag {
       -- |An opaque string. Only characters from 0x20 (sp) to 0x7e (~)
       -- are allowed.
     , etagToken  ∷ !Ascii
-    } deriving (Eq, Show)
+    } deriving (Eq, Show, Data, Typeable)
+
+instance Lift ETag where
+    lift (ETag {..})
+        = [| ETag {
+               etagIsWeak = $(lift etagIsWeak)
+             , etagToken  = $(liftAscii etagToken)
+             }
+           |]
 
 -- |Convert an 'ETag' to an 'AsciiBuilder'.
 printETag ∷ ETag → AsciiBuilder