Destroy Data.Attoparsec.Parsable; use Data.Default instead

[Lucu.git] / Network / HTTP / Lucu / HttpVersion.hs

diff --git a/Network/HTTP/Lucu/HttpVersion.hs b/Network/HTTP/Lucu/HttpVersion.hs
index 889042728fcdd310811bdfce67659430d1cbab32..0a850c7aa1cc30f5005b122c2cd7567b8c4b87b9 100644 (file)
--- a/Network/HTTP/Lucu/HttpVersion.hs
+++ b/Network/HTTP/Lucu/HttpVersion.hs
@@ -3,12 +3,12 @@
   , MultiParamTypeClasses
   , OverloadedStrings
   , TemplateHaskell
+  , TypeSynonymInstances
   , UnicodeSyntax
   #-}
 -- |An internal module for HTTP version numbers.
 module Network.HTTP.Lucu.HttpVersion
     ( HttpVersion(..)
-    , httpVersion
     )
     where
 import Control.Applicative
@@ -18,6 +18,7 @@ import Data.Attoparsec.Char8
 import Data.Convertible.Base
 import Data.Convertible.Instances.Ascii ()
 import Data.Convertible.Utils
+import Data.Default
 import Data.Monoid.Unicode
 import Prelude hiding (min)
 import Prelude.Unicode
@@ -57,8 +58,8 @@ deriveAttempts [ ([t| HttpVersion |], [t| Ascii        |])
                , ([t| HttpVersion |], [t| AsciiBuilder |])
                ]
 
--- |'Parser' for an 'HttpVersion'.
-httpVersion ∷ Parser HttpVersion
-httpVersion = string "HTTP/"
-              *>
-              (HttpVersion <$> decimal ⊛ (char '.' *> decimal))
+instance Default (Parser HttpVersion) where
+    {-# INLINEABLE def #-}
+    def = string "HTTP/"
+          *>
+          (HttpVersion <$> decimal ⊛ (char '.' *> decimal))