src/Rel8/Table/ADT.hs · rel8

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1{-# language DataKinds #-}

2{-# language StandaloneKindSignatures #-}

3{-# language TypeFamilies #-}

4{-# language UndecidableInstances #-}

6module Rel8.Table.ADT

7 ( ADT( ADT )

8 )

9where

11-- base

12import Prelude ()

14-- rel8

15import Rel8.Generic.Rel8able

16 ( Rel8able, Algebra

17 , GRep, GColumns, GContext, gfromColumns, gtoColumns

18 , GColumnsADT, gfromColumnsADT, gtoColumnsADT

19 , greify, gunreify

20 )

21import qualified Rel8.Kind.Algebra as K

22import Rel8.Schema.Context ( Col )

23import qualified Rel8.Schema.Kind as K

24import Rel8.Schema.Reify ( hreify, hunreify )

27type ADT :: K.Rel8able -> K.Rel8able

28newtype ADT t context = ADT (GColumnsADT t (Col context))

31instance Rel8able t => Rel8able (ADT t) where

32 type Algebra (ADT t) = 'K.Product

34 type GRep (ADT t) context = GRep t context

36 type GColumns (ADT t) = GColumnsADT t

37 type GContext (ADT t) context = context

39 gfromColumns = ADT

40 gtoColumns (ADT a) = a

42 gfromColumnsADT = ADT

43 gtoColumnsADT (ADT a) = a

45 greify (ADT a) = ADT (hreify a)

46 gunreify (ADT a) = ADT (hunreify a)