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Add a ($^) application function which moves the argument #413

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Add a ($^) application function which moves the argument #413

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8 changes: 4 additions & 4 deletions src/Data/Unrestricted/Linear.hs
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Expand Up @@ -68,22 +68,22 @@ module Data.Unrestricted.Linear

-- * Performing non-linear actions on linearly bound values
Consumable (..),
Dupable (..),
Movable (..),
lseq,
Dupable (..),
dup,
dup3,
dup4,
dup5,
dup6,
dup7,
module Data.Unrestricted.Linear.Internal.Instances,
Movable (..),
($^),
)
where

import Data.Unrestricted.Linear.Internal.Consumable
import Data.Unrestricted.Linear.Internal.Dupable
import Data.Unrestricted.Linear.Internal.Instances
import Data.Unrestricted.Linear.Internal.Instances ()
import Data.Unrestricted.Linear.Internal.Movable
import Data.Unrestricted.Linear.Internal.Ur
import Data.Unrestricted.Linear.Internal.UrT
11 changes: 9 additions & 2 deletions src/Data/Unrestricted/Linear/Internal/Movable.hs
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Expand Up @@ -4,8 +4,10 @@
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE LinearTypes #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE QuantifiedConstraints #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE StandaloneDeriving #-}
Expand All @@ -18,6 +20,7 @@
module Data.Unrestricted.Linear.Internal.Movable
( -- * Movable
Movable (..),
($^),
GMovable,
genericMove,
)
Expand All @@ -30,12 +33,11 @@ import qualified Data.Semigroup as Semigroup
import Data.Unrestricted.Linear.Internal.Dupable
import Data.Unrestricted.Linear.Internal.Ur
import GHC.Tuple (Solo)
import GHC.Types (Multiplicity (..))
import GHC.Types
import Generics.Linear
import Prelude.Linear.Generically
import Prelude.Linear.Internal
import qualified Unsafe.Linear as Unsafe
import Prelude (Bool (..), Char, Double, Float, Int, Ordering (..), Word)
import qualified Prelude as Prelude

-- | Use @'Movable' a@ to represent a type which can be used many times even
Expand All @@ -56,6 +58,11 @@ import qualified Prelude as Prelude
class Dupable a => Movable a where
move :: a %1 -> Ur a

($^) :: forall {rep} a (b :: TYPE rep). Movable a => (a -> b) %1 -> a %1 -> b
f $^ a =
move a & \case
Ur a' -> f a'

-- -------------
-- Instances

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5 changes: 3 additions & 2 deletions src/Prelude/Linear.hs
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Expand Up @@ -137,11 +137,12 @@ module Prelude.Linear
-- * Doing non-linear operations inside linear functions
-- $
Consumable (..),
Dupable (..),
Movable (..),
lseq,
Dupable (..),
dup,
dup3,
Movable (..),
($^),
forget,
)
where
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