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{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE MagicHash #-}
{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE TypeFamilies #-}
{-|
Module: Types.ReadShow
Copyright: (C) 2015-2017 Ryan Scott
License: BSD-style (see the file LICENSE)
Maintainer: Ryan Scott
Portability: Template Haskell
Shared datatypes between "ReadSpec" and "ShowSpec".
-}
module Types.ReadShow where
import Data.Deriving
import Text.Read (Read(..), readListPrecDefault)
-------------------------------------------------------------------------------
-- Plain data types
infixl 4 :@:
data TyCon1 a b = TyConPrefix { tc1 :: a, tc2 :: b }
| (:@:) { tc3 :: b, (##) :: a }
infixl 3 :!!:
infix 4 :@@:
infixr 5 `TyConPlain`
infixr 6 `TyConFakeInfix`
data TyConPlain a b = (:!!:) a b
| a :@@: b
| a `TyConPlain` b
| TyConFakeInfix a b
data TyConGADT a b where
(:.) :: c -> d -> TyConGADT c d
(:..) :: e -> f -> TyConGADT e f
(:...) :: g -> h -> Int -> TyConGADT g h
(:....) :: { tcg1 :: i, tcg2 :: j } -> TyConGADT i j
data TyConWrap f g h a = TyConWrap1 (f a)
| TyConWrap2 (f (g a))
| TyConWrap3 (f (g (h a)))
data TC# a b = MkTC1# a b
| MkTC2# { getTC2# :: b, (#~#) :: a }
| a `MkTC3#` b
-- Data families
data family TyFamily1 y z :: *
infixl 4 :!:
data instance TyFamily1 a b = TyFamilyPrefix { tf1 :: a, tf2 :: b }
| (:!:) { tf3 :: b, (###) :: a }
data family TyFamilyPlain y z :: *
infixl 3 :#:
infix 4 :$:
infixr 5 `TyFamilyPlain`
infixr 6 `TyFamilyFakeInfix`
data instance TyFamilyPlain a b = (:#:) a b
| a :$: b
| a `TyFamilyPlain` b
| TyFamilyFakeInfix a b
data family TyFamilyGADT y z :: *
infixr 1 :*, :***, :****
data instance TyFamilyGADT a b where
(:*) :: c -> d -> TyFamilyGADT c d
(:**) :: e -> f -> TyFamilyGADT e f
(:***) :: g -> h -> Int -> TyFamilyGADT g h
(:****) :: { tfg1 :: i, tfg2 :: j } -> TyFamilyGADT i j
data family TyFamilyWrap (w :: * -> *) (x :: * -> *) (y :: * -> *) z :: *
data instance TyFamilyWrap f g h a = TyFamilyWrap1 (f a)
| TyFamilyWrap2 (f (g a))
| TyFamilyWrap3 (f (g (h a)))
data family TF# y z :: *
data instance TF# a b = MkTF1# a b
| MkTF2# { getTF2# :: b, (#~~#) :: a }
| a `MkTF3#` b
-------------------------------------------------------------------------------
-- Plain data types
$(deriveRead ''TyCon1)
$(deriveRead ''TyConPlain)
$(deriveRead ''TyConGADT)
instance (Read (f a), Read (f (g a)), Read (f (g (h a))))
=> Read (TyConWrap f g h a) where
readPrec = $(makeReadPrec ''TyConWrap)
readListPrec = readListPrecDefault
$(deriveRead ''TC#)
$(deriveRead1 ''TyCon1)
$(deriveRead1 ''TyConPlain)
$(deriveRead1 ''TyConGADT)
$(deriveRead1 ''TyConWrap)
$(deriveRead1 ''TC#)
$(deriveShow ''TyCon1)
$(deriveShow ''TyConPlain)
$(deriveShow ''TyConGADT)
instance (Show (f a), Show (f (g a)), Show (f (g (h a))))
=> Show (TyConWrap f g h a) where
showsPrec = $(makeShowsPrec ''TyConWrap)
show = $(makeShow ''TyConWrap)
showList = $(makeShowList ''TyConWrap)
$(deriveShow ''TC#)
$(deriveShow1 ''TyCon1)
$(deriveShow1 ''TyConPlain)
$(deriveShow1 ''TyConGADT)
$(deriveShow1 ''TyConWrap)
$(deriveShow1 ''TC#)
$(deriveRead2 ''TyCon1)
$(deriveRead2 ''TyConPlain)
$(deriveRead2 ''TyConGADT)
$(deriveRead2 ''TC#)
$(deriveShow2 ''TyCon1)
$(deriveShow2 ''TyConPlain)
$(deriveShow2 ''TyConGADT)
$(deriveShow2 ''TC#)
-- Data families
$(deriveRead 'TyFamilyPrefix)
$(deriveRead '(:#:))
$(deriveRead '(:*))
instance (Read (f a), Read (f (g a)), Read (f (g (h a))))
=> Read (TyFamilyWrap f g h a) where
readsPrec = $(makeReadsPrec 'TyFamilyWrap1)
$(deriveRead 'MkTF1#)
$(deriveRead1 '(:!:))
$(deriveRead1 '(:$:))
$(deriveRead1 '(:**))
$(deriveRead1 'TyFamilyWrap2)
$(deriveRead1 'MkTF2#)
$(deriveShow 'TyFamilyPrefix)
$(deriveShow '(:#:))
$(deriveShow '(:*))
instance (Show (f a), Show (f (g a)), Show (f (g (h a))))
=> Show (TyFamilyWrap f g h a) where
showsPrec = $(makeShowsPrec 'TyFamilyWrap1)
show = $(makeShow 'TyFamilyWrap1)
showList = $(makeShowList 'TyFamilyWrap1)
$(deriveShow 'MkTF3#)
$(deriveShow1 '(:!:))
$(deriveShow1 '(:$:))
$(deriveShow1 '(:**))
$(deriveShow1 'TyFamilyWrap2)
$(deriveShow1 'MkTF1#)
$(deriveRead2 'TyFamilyPrefix)
$(deriveRead2 'TyFamilyPlain)
$(deriveRead2 '(:***))
$(deriveRead2 'MkTF2#)
$(deriveShow2 'TyFamilyPrefix)
$(deriveShow2 'TyFamilyPlain)
$(deriveShow2 '(:***))
$(deriveShow2 'MkTF3#)
|
