{-# LANGUAGE TemplateHaskell #-}

-- |
-- Module      :   Grisette.Internal.TH.Derivation.DeriveNFData
-- Copyright   :   (c) Sirui Lu 2024
-- License     :   BSD-3-Clause (see the LICENSE file)
--
-- Maintainer  :   siruilu@cs.washington.edu
-- Stability   :   Experimental
-- Portability :   GHC only
module Grisette.Internal.TH.Derivation.DeriveNFData
  ( deriveNFData,
    deriveNFData1,
    deriveNFData2,
  )
where

import Control.DeepSeq (NFData (rnf), NFData1 (liftRnf), NFData2 (liftRnf2))
import Grisette.Internal.TH.Derivation.Common (DeriveConfig)
import Grisette.Internal.TH.Derivation.UnaryOpCommon
  ( UnaryOpClassConfig
      ( UnaryOpClassConfig,
        unaryOpAllowExistential,
        unaryOpConfigs,
        unaryOpContextNames,
        unaryOpExtraVars,
        unaryOpInstanceNames,
        unaryOpInstanceTypeFromConfig
      ),
    UnaryOpConfig (UnaryOpConfig),
    UnaryOpFieldConfig
      ( UnaryOpFieldConfig,
        extraLiftedPatNames,
        extraPatNames,
        fieldCombineFun,
        fieldFunExp,
        fieldResFun
      ),
    defaultFieldFunExp,
    defaultFieldResFun,
    defaultUnaryOpInstanceTypeFromConfig,
    genUnaryOpClass,
  )
import Language.Haskell.TH (Dec, Name)
import Language.Haskell.TH.Syntax (Q)

nfdataConfig :: UnaryOpClassConfig
nfdataConfig :: UnaryOpClassConfig
nfdataConfig =
  UnaryOpClassConfig
    { unaryOpConfigs :: [UnaryOpConfig]
unaryOpConfigs =
        [ UnaryOpFieldConfig -> [Name] -> UnaryOpConfig
forall config.
UnaryOpFunConfig config =>
config -> [Name] -> UnaryOpConfig
UnaryOpConfig
            UnaryOpFieldConfig
              { extraPatNames :: [String]
extraPatNames = [],
                extraLiftedPatNames :: Int -> [String]
extraLiftedPatNames = [String] -> Int -> [String]
forall a b. a -> b -> a
const [],
                fieldCombineFun :: Int
-> Int
-> ConstructorVariant
-> Name
-> [Exp]
-> [Exp]
-> Q (Exp, [Bool])
fieldCombineFun = \Int
_ Int
_ ConstructorVariant
_ Name
_ [Exp]
_ [Exp]
exps -> do
                  r <-
                    (Q Exp -> Exp -> Q Exp) -> Q Exp -> [Exp] -> Q Exp
forall b a. (b -> a -> b) -> b -> [a] -> b
forall (t :: * -> *) b a.
Foldable t =>
(b -> a -> b) -> b -> t a -> b
foldl
                      (\Q Exp
acc Exp
exp -> [|$Q Exp
acc `seq` $(Exp -> Q Exp
forall a. a -> Q a
forall (m :: * -> *) a. Monad m => a -> m a
return Exp
exp)|])
                      ([|()|])
                      [Exp]
exps
                  return (r, []),
                fieldResFun :: ConstructorVariant
-> Name -> [Exp] -> Int -> Exp -> Exp -> Q (Exp, [Bool])
fieldResFun = ConstructorVariant
-> Name -> [Exp] -> Int -> Exp -> Exp -> Q (Exp, [Bool])
defaultFieldResFun,
                fieldFunExp :: FieldFunExp
fieldFunExp = [Name] -> FieldFunExp
defaultFieldFunExp ['rnf, 'liftRnf, 'liftRnf2]
              }
            ['rnf, 'liftRnf, 'liftRnf2]
        ],
      unaryOpInstanceNames :: [Name]
unaryOpInstanceNames = [''NFData, ''NFData1, ''NFData2],
      unaryOpExtraVars :: DeriveConfig -> Q [(Type, Type)]
unaryOpExtraVars = Q [(Type, Type)] -> DeriveConfig -> Q [(Type, Type)]
forall a b. a -> b -> a
const (Q [(Type, Type)] -> DeriveConfig -> Q [(Type, Type)])
-> Q [(Type, Type)] -> DeriveConfig -> Q [(Type, Type)]
forall a b. (a -> b) -> a -> b
$ [(Type, Type)] -> Q [(Type, Type)]
forall a. a -> Q a
forall (m :: * -> *) a. Monad m => a -> m a
return [],
      unaryOpInstanceTypeFromConfig :: DeriveConfig -> [(Type, Type)] -> [(Type, Type)] -> Name -> Q Type
unaryOpInstanceTypeFromConfig = DeriveConfig -> [(Type, Type)] -> [(Type, Type)] -> Name -> Q Type
defaultUnaryOpInstanceTypeFromConfig,
      unaryOpAllowExistential :: Bool
unaryOpAllowExistential = Bool
True,
      unaryOpContextNames :: Maybe [Name]
unaryOpContextNames = Maybe [Name]
forall a. Maybe a
Nothing
    }

-- | Derive 'NFData' instance for a data type.
deriveNFData :: DeriveConfig -> Name -> Q [Dec]
deriveNFData :: DeriveConfig -> Name -> Q [Dec]
deriveNFData DeriveConfig
deriveConfig = DeriveConfig -> UnaryOpClassConfig -> Int -> Name -> Q [Dec]
genUnaryOpClass DeriveConfig
deriveConfig UnaryOpClassConfig
nfdataConfig Int
0

-- | Derive 'NFData1' instance for a data type.
deriveNFData1 :: DeriveConfig -> Name -> Q [Dec]
deriveNFData1 :: DeriveConfig -> Name -> Q [Dec]
deriveNFData1 DeriveConfig
deriveConfig = DeriveConfig -> UnaryOpClassConfig -> Int -> Name -> Q [Dec]
genUnaryOpClass DeriveConfig
deriveConfig UnaryOpClassConfig
nfdataConfig Int
1

-- | Derive 'NFData2' instance for a data type.
deriveNFData2 :: DeriveConfig -> Name -> Q [Dec]
deriveNFData2 :: DeriveConfig -> Name -> Q [Dec]
deriveNFData2 DeriveConfig
deriveConfig = DeriveConfig -> UnaryOpClassConfig -> Int -> Name -> Q [Dec]
genUnaryOpClass DeriveConfig
deriveConfig UnaryOpClassConfig
nfdataConfig Int
2