46 lines
1.1 KiB
Haskell
46 lines
1.1 KiB
Haskell
module Utils.Lens ( module Utils.Lens ) where
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import Import.NoFoundation
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import Control.Lens as Utils.Lens hiding ((<.>))
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import Control.Lens.Extras as Utils.Lens (is)
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import Utils.Lens.TH as Utils.Lens (makeLenses_)
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import qualified Database.Esqueleto as E (Value(..),InnerJoin(..))
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_unValue :: Lens' (E.Value a) a
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_unValue f (E.Value a) = E.Value <$> f a
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_PathPiece :: PathPiece v => Prism' Text v
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_PathPiece = prism' toPathPiece fromPathPiece
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maybePrism :: Prism' a b -> Prism' (Maybe a) (Maybe b)
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maybePrism p = prism' (fmap $ review p) (fmap $ preview p )
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applying :: Applicative f => Lens' s a -> Lens' (f s) (f a)
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applying l = lens (fmap $ view l) (liftA2 . flip $ set l)
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_InnerJoinLeft :: Lens' (E.InnerJoin l r) l -- forall f. Functor f => (a -> f a) -> s -> f s
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_InnerJoinLeft f (E.InnerJoin l r) = (`E.InnerJoin` r) <$> f l
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_InnerJoinRight :: Lens' (E.InnerJoin l r) r
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_InnerJoinRight f (E.InnerJoin l r) = (l `E.InnerJoin`) <$> f r
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makeLenses_ ''Entity
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makeLenses_ ''Course
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makeLenses_ ''SheetCorrector
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makeLenses_ ''SubmissionGroup
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makeLenses_ ''SheetGrading
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makeLenses_ ''SheetType
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makePrisms ''AuthResult
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-- makeClassy_ ''Load
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