Example.hs

{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DerivingStrategies #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE MagicHash #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UnboxedTuples #-}
{-# LANGUAGE UndecidableInstances #-}

module Example
    ( Example.A(..)
    )
  where

import qualified HsBindgen.Runtime.HasCField as HasCField
import qualified HsBindgen.Runtime.Marshal as Marshal
import qualified HsBindgen.Runtime.Support as BG
import qualified HsBindgen.Runtime.Support.CompatHasField as BG.CompatHasField
import Prelude (Bounded, Enum, Eq, Integral, Num, Ord, Read, Real, Show, type (~))

{-| __C declaration:__ @macro A@

    __defined at:__ @program-analysis\/selection_bad.h 3:9@

    __exported by:__ @program-analysis\/selection_bad.h@
-}
newtype A = A
  { unwrapA :: BG.CInt
  }
  deriving stock (Eq, BG.Generic, Ord, Read, Show)
  deriving newtype
    ( BG.Bitfield
    , BG.Bits
    , Bounded
    , Enum
    , BG.FiniteBits
    , BG.HasFFIType
    , Integral
    , BG.Ix
    , Num
    , BG.Prim
    , Marshal.ReadRaw
    , Real
    , Marshal.StaticSize
    , BG.Storable
    , Marshal.WriteRaw
    )

instance (ty ~ BG.CInt) => BG.CompatHasField.HasField "unwrapA" A ty where

  hasField =
    \x0 ->
      (\y1 -> A {unwrapA = y1}, BG.getField @"unwrapA" x0)

instance (ty ~ BG.CInt) => BG.HasField "unwrapA" (BG.Ptr A) (BG.Ptr ty) where

  getField = HasCField.fromPtr (BG.Proxy @"unwrapA")

instance HasCField.HasCField A "unwrapA" where

  type CFieldType A "unwrapA" = BG.CInt

  offset# = \_ -> \_ -> 0