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|
{-# LANGUAGE ExplicitForAll #-}
module Witch.Lift where
import qualified Data.Typeable as Typeable
import qualified Language.Haskell.TH.Syntax as TH
import qualified Witch.TryFrom as TryFrom
import qualified Witch.Utility as Utility
-- | This is like 'Utility.unsafeFrom' except that it works at compile time
-- rather than runtime.
--
-- > -- Avoid this:
-- > unsafeFrom @s "some literal"
-- >
-- > -- Prefer this:
-- > $$(liftedFrom @s "some literal")
liftedFrom ::
forall source target m.
( TryFrom.TryFrom source target,
TH.Lift target,
Show source,
Typeable.Typeable source,
Typeable.Typeable target,
TH.Quote m
) =>
source ->
TH.Code m target
liftedFrom = TH.liftTyped . Utility.unsafeFrom
-- | This is like 'Utility.unsafeInto' except that it works at compile time
-- rather than runtime.
--
-- > -- Avoid this:
-- > unsafeInto @t "some literal"
-- >
-- > -- Prefer this:
-- > $$(liftedInto @t "some literal")
liftedInto ::
forall target source m.
( TryFrom.TryFrom source target,
TH.Lift target,
Show source,
Typeable.Typeable source,
Typeable.Typeable target,
TH.Quote m
) =>
source ->
TH.Code m target
liftedInto = liftedFrom
|
