20 lines
553 B
Haskell
20 lines
553 B
Haskell
{-# OPTIONS_GHC -fno-warn-orphans #-}
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module Colonnade.Instances
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(
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) where
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import ClassyPrelude
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import Control.Lens.Indexed (FunctorWithIndex(imap))
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import Colonnade.Encode (Colonnade(..), OneColonnade(..))
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instance Functor h => FunctorWithIndex (Maybe a) (Colonnade h a) where
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imap f (Colonnade ones) = Colonnade $ dimapColonnade' <$> ones
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where
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dimapColonnade' OneColonnade{..} = OneColonnade
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{ oneColonnadeEncode = \x -> f (Just x) $ oneColonnadeEncode x
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, oneColonnadeHead = f Nothing <$> oneColonnadeHead
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}
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