{-# OPTIONS_GHC -Wno-orphans #-}
module Util.Named
( (.!)
, (.?)
, (<.!>)
, (<.?>)
, NamedInner
) where
import Control.Lens (Wrapped(..), iso)
import GHC.TypeLits (KnownSymbol, symbolVal)
import Named (Name, NamedF(..))
import qualified Text.Show
(.!) :: Name name -> a -> NamedF Identity a name
(.!) _ = ArgF . Identity
(.?) :: Name name -> Maybe a -> NamedF Maybe a name
(.?) _ = ArgF
(<.!>) :: Functor m => Name name -> m a -> m (NamedF Identity a name)
(<.!>) name = fmap (name .!)
(<.?>) :: Functor m => Name name -> m (Maybe a) -> m (NamedF Maybe a name)
(<.?>) name = fmap (name .?)
type family NamedInner n where
NamedInner (NamedF Identity a _) = a
NamedInner (NamedF Maybe a _) = Maybe a
instance Wrapped (NamedF Identity a name) where
type Unwrapped (NamedF Identity a name) = a
_Wrapped' = iso (\(ArgF a) -> runIdentity a) (ArgF . Identity)
instance Wrapped (NamedF Maybe a name) where
type Unwrapped (NamedF Maybe a name) = Maybe a
_Wrapped' = iso (\(ArgF a) -> a) ArgF
deriving instance Eq a => Eq (NamedF Identity a name)
instance (Show a, KnownSymbol name) => Show (NamedF Identity a name) where
show (ArgF a) = symbolVal (Proxy @name) <> " :! " <> show a