StatusCode is now a type class, not an algebraic data type.

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

diff --git a/Network/HTTP/Lucu/Abortion.hs b/Network/HTTP/Lucu/Abortion.hs
index 75ce437bf4159ae2536f224c0860ba6f14343ce7..064a97ebd8671232b9053a6382d93c85927df318 100644 (file)
--- a/Network/HTTP/Lucu/Abortion.hs
+++ b/Network/HTTP/Lucu/Abortion.hs
@@ -1,67 +1,50 @@
+{-# LANGUAGE
+    UnicodeSyntax
+  #-}
+-- |Aborting the computation of 'Network.HTTP.Lucu.Resource.Resource'
+-- in any 'Prelude.IO' monads or arrows.
 module Network.HTTP.Lucu.Abortion
-    ( Abortion(..)
-    , abort      -- MonadIO m => StatusCode -> [ (String, String) ] -> String -> m a
-    , abortIO    -- StatusCode -> [ (String, String) ] -> String -> IO a
-    , abortSTM   -- StatusCode -> [ (String, String) ] -> String -> STM a
-    , abortA     -- ArrowIO a => StatusCode -> [ (String, String) ] -> String -> a b c
-    , aboPage    -- Config -> Abortion -> String
+    ( Abortion
+    , mkAbortion
+    , mkAbortion'
+
+    , abort
     )
     where
-
-import           Control.Arrow
-import           Control.Arrow.ArrowIO
-import           Control.Concurrent.STM
-import           Control.Exception
-import           Control.Monad.Trans
-import           GHC.Conc (unsafeIOToSTM)
-import           Data.Dynamic
-import           Network.HTTP.Lucu.Config
-import           Network.HTTP.Lucu.DefaultPage
-import           Network.HTTP.Lucu.Headers
-import           Network.HTTP.Lucu.Response
-import           System.IO.Unsafe
-import           Text.XML.HXT.Arrow.WriteDocument
-import           Text.XML.HXT.Arrow.XmlArrow
-import           Text.XML.HXT.Arrow.XmlIOStateArrow
-import           Text.XML.HXT.DOM.XmlKeywords
-
-
-data Abortion = Abortion {
-      aboStatus  :: StatusCode
-    , aboHeaders :: Headers
-    , aboMessage ::  String
-    } deriving (Show, Typeable)
-
-
-abort :: MonadIO m => StatusCode -> [ (String, String) ] -> String -> m a
-abort status headers msg
-    = liftIO $ abortIO status headers msg
-
-
-abortIO :: StatusCode -> [ (String, String) ] -> String -> IO a
-abortIO status headers msg
-    = let abo = Abortion status headers msg
-          exc = DynException (toDyn abo)
-      in
-        throwIO exc
-
-
-abortSTM :: StatusCode -> [ (String, String) ] -> String -> STM a
-abortSTM status headers msg
-    = unsafeIOToSTM $ abortIO status headers msg
-
-
-abortA :: ArrowIO a => StatusCode -> [ (String, String) ] -> String -> a b c
-abortA status headers msg
-    = arrIO0 $ abortIO status headers msg
-
-
-aboPage :: Config -> Abortion -> String
-aboPage conf abo
-    = let [html] = unsafePerformIO 
-                   $ runX ( mkDefaultPage conf (aboStatus abo) (txt $ aboMessage abo)
-                            >>>
-                            writeDocumentToString [(a_indent, v_1)]
-                          )
-      in
-        html
+import Control.Exception
+import Control.Monad.Trans
+import Data.Ascii (Ascii, CIAscii)
+import Data.Monoid.Unicode
+import Data.Text (Text)
+import Network.HTTP.Lucu.Abortion.Internal
+import Network.HTTP.Lucu.Headers
+import Network.HTTP.Lucu.Response
+import Prelude.Unicode
+
+-- |Construct an 'Abortion' with additional headers and an optional
+-- message text.
+mkAbortion ∷ StatusCode sc ⇒ sc → [(CIAscii, Ascii)] → Maybe Text → Abortion
+{-# INLINE mkAbortion #-}
+mkAbortion sc hdr msg
+    = Abortion {
+        aboStatus  = fromStatusCode sc
+      , aboHeaders = toHeaders hdr
+      , aboMessage = msg
+      }
+
+-- |Construct an 'Abortion' without any additional headers but with a
+-- message text.
+mkAbortion' ∷ StatusCode sc ⇒ sc → Text → Abortion
+{-# INLINE mkAbortion' #-}
+mkAbortion' sc msg
+    = Abortion {
+        aboStatus  = fromStatusCode sc
+      , aboHeaders = (∅)
+      , aboMessage = Just msg
+      }
+
+-- |Throw an 'Abortion' in a 'MonadIO', including the very
+-- 'Network.HTTP.Lucu.Resource.Resource' monad.
+abort ∷ MonadIO m ⇒ Abortion → m a
+{-# INLINE abort #-}
+abort = liftIO ∘ throwIO