Example.hs

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

module Example
    ( Example.S(..)
    , Example.t
    , Example.Foo(..)
    , Example.Bar(..)
    )
  where

import qualified HsBindgen.Runtime.HasCField as HasCField
import qualified HsBindgen.Runtime.Macro as Macro
import qualified HsBindgen.Runtime.Marshal as Marshal
import qualified HsBindgen.Runtime.Struct as Struct
import qualified HsBindgen.Runtime.Support as BG
import qualified HsBindgen.Runtime.Support.CompatHasField as BG.CompatHasField
import Prelude ((<*>), Eq, Int, Ord, Show, String, pure, type (~))

{-| __C declaration:__ @struct S@

    __defined at:__ @macros\/reparse\/defer_wrong.h 11:8@

    __exported by:__ @macros\/reparse\/defer_wrong.h@
-}
data S = S
  { s_x :: BG.CInt
    {- ^ __C declaration:__ @x@

         __defined at:__ @macros\/reparse\/defer_wrong.h 11:16@

         __exported by:__ @macros\/reparse\/defer_wrong.h@
    -}
  }
  deriving stock (Eq, BG.Generic, Show)

instance Marshal.StaticSize S where

  staticSizeOf = \_ -> (4 :: Int)

  staticAlignment = \_ -> (4 :: Int)

instance Marshal.ReadRaw S where

  readRaw =
    \ptr0 ->
          pure S
      <*> HasCField.readRaw (BG.Proxy @"s_x") ptr0

instance Marshal.WriteRaw S where

  writeRaw =
    \ptr0 ->
      \s1 ->
        case s1 of
          S s_x2 ->
            HasCField.writeRaw (BG.Proxy @"s_x") ptr0 s_x2

deriving via Marshal.EquivStorable S instance BG.Storable S

deriving via Struct.IsStructViaReadRaw S instance Struct.IsStruct S

{-| __C declaration:__ @x@

    __defined at:__ @macros\/reparse\/defer_wrong.h 11:16@

    __exported by:__ @macros\/reparse\/defer_wrong.h@
-}
instance (ty ~ BG.CInt) => BG.CompatHasField.HasField "s_x" S ty where

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

instance (ty ~ BG.CInt) => BG.HasField "s_x" (BG.Ptr S) (BG.Ptr ty) where

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

instance HasCField.HasCField S "s_x" where

  type CFieldType S "s_x" = BG.CInt

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

{-| __C declaration:__ @macro T@

    __defined at:__ @macros\/reparse\/defer_wrong.h 13:9@

    __exported by:__ @macros\/reparse\/defer_wrong.h@
-}
t :: Macro.Raw String
t = Macro.objectLike "T" ["struct", "S"]

{-| __C declaration:__ @foo@

    __defined at:__ @macros\/reparse\/defer_wrong.h 15:11@

    __exported by:__ @macros\/reparse\/defer_wrong.h@
-}
newtype Foo = Foo
  { unwrapFoo :: S
  }
  deriving stock (Eq, BG.Generic, Show)
  deriving newtype
    ( Marshal.ReadRaw
    , Marshal.StaticSize
    , BG.Storable
    , Marshal.WriteRaw
    )

instance (ty ~ S) => BG.CompatHasField.HasField "unwrapFoo" Foo ty where

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

instance (ty ~ S) => BG.HasField "unwrapFoo" (BG.Ptr Foo) (BG.Ptr ty) where

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

instance HasCField.HasCField Foo "unwrapFoo" where

  type CFieldType Foo "unwrapFoo" = S

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

{-| __C declaration:__ @bar@

    __defined at:__ @macros\/reparse\/defer_wrong.h 16:13@

    __exported by:__ @macros\/reparse\/defer_wrong.h@
-}
newtype Bar = Bar
  { unwrapBar :: BG.Ptr S
  }
  deriving stock (Eq, BG.Generic, Ord, Show)
  deriving newtype
    ( BG.HasFFIType
    , Marshal.ReadRaw
    , Marshal.StaticSize
    , BG.Storable
    , Marshal.WriteRaw
    )

instance (ty ~ BG.Ptr S) => BG.CompatHasField.HasField "unwrapBar" Bar ty where

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

instance ( ty ~ BG.Ptr S
         ) => BG.HasField "unwrapBar" (BG.Ptr Bar) (BG.Ptr ty) where

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

instance HasCField.HasCField Bar "unwrapBar" where

  type CFieldType Bar "unwrapBar" = BG.Ptr S

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