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-rw-r--r--src/Hakyll/Web/Template/Context.hs24
1 files changed, 24 insertions, 0 deletions
diff --git a/src/Hakyll/Web/Template/Context.hs b/src/Hakyll/Web/Template/Context.hs
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+++ b/src/Hakyll/Web/Template/Context.hs
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+--------------------------------------------------------------------------------
+module Hakyll.Web.Template.Context
+ ( Context
+ , field
+ ) where
+
+
+--------------------------------------------------------------------------------
+import Control.Applicative (empty)
+import Control.Arrow
+import Hakyll.Core.Compiler
+
+
+--------------------------------------------------------------------------------
+type Context a = Compiler (String, a) String
+
+
+--------------------------------------------------------------------------------
+field :: String -> Compiler a String -> Context a
+field key value = arr checkKey >>> empty ||| value
+ where
+ checkKey (k, x)
+ | k == key = Left ()
+ | otherwise = Right x