Instances for Html

src/Import/NoFoundation.hs

@@ -69,6 +69,8 @@ import Numeric.Natural.Instances as Import ()
 import System.Random as Import (Random)
 import Control.Monad.Random.Class as Import (MonadRandom(..))
 
+import Text.Blaze.Instances as Import ()
+
 
 import Control.Monad.Trans.RWS (RWST)
 

src/Text/Blaze/Instances.hs

@@ -0,0 +1,37 @@
+{-# OPTIONS_GHC -fno-warn-orphans #-}
+
+module Text.Blaze.Instances
+  (
+  ) where
+
+import ClassyPrelude
+import Text.Blaze
+import qualified Text.Blaze.Renderer.Text as Text
+
+import Text.Read (Read(..))
+
+import Data.Hashable (Hashable(..))
+import Data.Aeson (ToJSON(..), FromJSON(..))
+import qualified Data.Aeson as Aeson
+
+
+instance Eq Markup where
+  (==) = (==) `on` Text.renderMarkup
+
+instance Ord Markup where
+  compare = comparing Text.renderMarkup
+
+instance Read Markup where
+  readPrec = preEscapedLazyText <$> readPrec
+
+instance Show Markup where
+  showsPrec prec = showsPrec prec . Text.renderMarkup
+
+instance Hashable Markup where
+  hashWithSalt s = hashWithSalt s . Text.renderMarkup
+
+instance ToJSON Markup where
+  toJSON = Aeson.String . toStrict . Text.renderMarkup
+
+instance FromJSON Markup where
+  parseJSON = Aeson.withText "Html" $ return . preEscapedText