diff options
Diffstat (limited to 'libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs')
| -rw-r--r-- | libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs b/libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs index cb19882a97..fa38e6a933 100644 --- a/libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs +++ b/libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs @@ -1,4 +1,5 @@ -{-# LANGUAGE Safe #-} +{-# LANGUAGE PolyKinds #-} +{-# LANGUAGE Trustworthy #-} -- | -- Language.Haskell.TH.Lib.Internal exposes some additional functionality that @@ -19,19 +20,31 @@ module Language.Haskell.TH.Lib.Internal where import Language.Haskell.TH.Syntax hiding (Role, InjectivityAnn) import qualified Language.Haskell.TH.Syntax as TH import Control.Applicative(liftA, liftA2) +import qualified Data.Kind as Kind (Type) import Data.Word( Word8 ) +import GHC.Exts (TYPE) import Prelude ---------------------------------------------------------- -- * Type synonyms ---------------------------------------------------------- +-- Since GHC 8.8 is currently the minimum boot compiler version that we must +-- support, we must use inline kind signatures to make TExpQ and CodeQ +-- levity polymorphic. When we drop support for GHC 8.8, we can instead use +-- standalone kind signatures, which are provided as comments. + +-- | Levity-polymorphic since /template-haskell-2.17.0.0/. +-- type TExpQ :: TYPE r -> Kind.Type +type TExpQ (a :: TYPE r) = Q (TExp a) + +-- type CodeQ :: TYPE r -> Kind.Type +type CodeQ = Code Q :: (TYPE r -> Kind.Type) + type InfoQ = Q Info type PatQ = Q Pat type FieldPatQ = Q FieldPat type ExpQ = Q Exp -type TExpQ a = Q (TExp a) -type CodeQ = Code Q type DecQ = Q Dec type DecsQ = Q [Dec] type Decs = [Dec] -- Defined as it is more convenient to wire-in |