35 lines
1.2 KiB
Haskell
35 lines
1.2 KiB
Haskell
{-# LANGUAGE CPP #-}
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{-# LANGUAGE DeriveDataTypeable #-}
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{-# LANGUAGE FlexibleInstances #-}
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{-# LANGUAGE MultiParamTypeClasses #-}
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{-# LANGUAGE OverloadedStrings #-}
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#include "overlapping-compat.h"
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-- | An @HTML@ empty data type with `MimeRender` instances for @blaze-html@'s
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-- `ToMarkup` class and `Html` datatype.
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-- You should only need to import this module for it's instances and the
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-- `HTML` datatype.:
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--
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-- >>> type Eg = Get '[HTML] a
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--
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-- Will then check that @a@ has a `ToMarkup` instance, or is `Html`.
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module Servant.HTML.Blaze where
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import Data.Typeable (Typeable)
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import qualified Network.HTTP.Media as M
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import Servant.API (Accept (..), MimeRender (..))
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import Text.Blaze.Html (Html, ToMarkup, toHtml)
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import Text.Blaze.Html.Renderer.Utf8 (renderHtml)
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data HTML deriving Typeable
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-- | @text/html;charset=utf-8@
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instance Accept HTML where
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contentType _ = "text" M.// "html" M./: ("charset", "utf-8")
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instance OVERLAPPABLE_ ToMarkup a => MimeRender HTML a where
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mimeRender _ = renderHtml . toHtml
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instance OVERLAPPING_ MimeRender HTML Html where
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mimeRender _ = renderHtml
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