{-# LANGUAGE TypeApplications #-}


-- | Copyright  : Will Thompson, Iñaki García Etxebarria and Jonas Platte
-- License    : LGPL-2.1
-- Maintainer : Iñaki García Etxebarria
-- 
-- A file descriptor object.

#if (MIN_VERSION_haskell_gi_overloading(1,0,0) && !defined(__HADDOCK_VERSION__))
#define ENABLE_OVERLOADING
#endif

module GI.Gst.Structs.PollFD
    ( 

-- * Exported types
    PollFD(..)                              ,
    newZeroPollFD                           ,


 -- * Methods
-- ** Overloaded methods #method:Overloaded methods#

#if defined(ENABLE_OVERLOADING)
    ResolvePollFDMethod                     ,
#endif


-- ** init #method:init#

#if defined(ENABLE_OVERLOADING)
    PollFDInitMethodInfo                    ,
#endif
    pollFDInit                              ,




 -- * Properties
-- ** fd #attr:fd#
-- | a file descriptor

    getPollFDFd                             ,
#if defined(ENABLE_OVERLOADING)
    pollFD_fd                               ,
#endif
    setPollFDFd                             ,




    ) where

import Data.GI.Base.ShortPrelude
import qualified Data.GI.Base.ShortPrelude as SP
import qualified Data.GI.Base.Overloading as O
import qualified Prelude as P

import qualified Data.GI.Base.Attributes as GI.Attributes
import qualified Data.GI.Base.BasicTypes as B.Types
import qualified Data.GI.Base.ManagedPtr as B.ManagedPtr
import qualified Data.GI.Base.GClosure as B.GClosure
import qualified Data.GI.Base.GError as B.GError
import qualified Data.GI.Base.GVariant as B.GVariant
import qualified Data.GI.Base.GValue as B.GValue
import qualified Data.GI.Base.GParamSpec as B.GParamSpec
import qualified Data.GI.Base.CallStack as B.CallStack
import qualified Data.GI.Base.Properties as B.Properties
import qualified Data.GI.Base.Signals as B.Signals
import qualified Control.Monad.IO.Class as MIO
import qualified Data.Text as T
import qualified Data.ByteString.Char8 as B
import qualified Data.Map as Map
import qualified Foreign.Ptr as FP
import qualified GHC.OverloadedLabels as OL


-- | Memory-managed wrapper type.
newtype PollFD = PollFD (SP.ManagedPtr PollFD)
    deriving (PollFD -> PollFD -> Bool
(PollFD -> PollFD -> Bool)
-> (PollFD -> PollFD -> Bool) -> Eq PollFD
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: PollFD -> PollFD -> Bool
$c/= :: PollFD -> PollFD -> Bool
== :: PollFD -> PollFD -> Bool
$c== :: PollFD -> PollFD -> Bool
Eq)

instance SP.ManagedPtrNewtype PollFD where
    toManagedPtr :: PollFD -> ManagedPtr PollFD
toManagedPtr (PollFD ManagedPtr PollFD
p) = ManagedPtr PollFD
p

instance BoxedPtr PollFD where
    boxedPtrCopy :: PollFD -> IO PollFD
boxedPtrCopy = \PollFD
p -> PollFD -> (Ptr PollFD -> IO PollFD) -> IO PollFD
forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
B.ManagedPtr.withManagedPtr PollFD
p (Int -> Ptr PollFD -> IO (Ptr PollFD)
forall a. (HasCallStack, CallocPtr a) => Int -> Ptr a -> IO (Ptr a)
copyBytes Int
8 (Ptr PollFD -> IO (Ptr PollFD))
-> (Ptr PollFD -> IO PollFD) -> Ptr PollFD -> IO PollFD
forall (m :: * -> *) a b c.
Monad m =>
(a -> m b) -> (b -> m c) -> a -> m c
>=> (ManagedPtr PollFD -> PollFD) -> Ptr PollFD -> IO PollFD
forall a.
(HasCallStack, BoxedPtr a) =>
(ManagedPtr a -> a) -> Ptr a -> IO a
B.ManagedPtr.wrapPtr ManagedPtr PollFD -> PollFD
PollFD)
    boxedPtrFree :: PollFD -> IO ()
boxedPtrFree = \PollFD
x -> PollFD -> (Ptr PollFD -> IO ()) -> IO ()
forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
SP.withManagedPtr PollFD
x Ptr PollFD -> IO ()
forall a. Ptr a -> IO ()
SP.freeMem
instance CallocPtr PollFD where
    boxedPtrCalloc :: IO (Ptr PollFD)
boxedPtrCalloc = Int -> IO (Ptr PollFD)
forall a. Int -> IO (Ptr a)
callocBytes Int
8


-- | Construct a `PollFD` struct initialized to zero.
newZeroPollFD :: MonadIO m => m PollFD
newZeroPollFD :: m PollFD
newZeroPollFD = IO PollFD -> m PollFD
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO PollFD -> m PollFD) -> IO PollFD -> m PollFD
forall a b. (a -> b) -> a -> b
$ IO (Ptr PollFD)
forall a. CallocPtr a => IO (Ptr a)
boxedPtrCalloc IO (Ptr PollFD) -> (Ptr PollFD -> IO PollFD) -> IO PollFD
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= (ManagedPtr PollFD -> PollFD) -> Ptr PollFD -> IO PollFD
forall a.
(HasCallStack, BoxedPtr a) =>
(ManagedPtr a -> a) -> Ptr a -> IO a
wrapPtr ManagedPtr PollFD -> PollFD
PollFD

instance tag ~ 'AttrSet => Constructible PollFD tag where
    new :: (ManagedPtr PollFD -> PollFD) -> [AttrOp PollFD tag] -> m PollFD
new ManagedPtr PollFD -> PollFD
_ [AttrOp PollFD tag]
attrs = do
        PollFD
o <- m PollFD
forall (m :: * -> *). MonadIO m => m PollFD
newZeroPollFD
        PollFD -> [AttrOp PollFD 'AttrSet] -> m ()
forall o (m :: * -> *).
MonadIO m =>
o -> [AttrOp o 'AttrSet] -> m ()
GI.Attributes.set PollFD
o [AttrOp PollFD tag]
[AttrOp PollFD 'AttrSet]
attrs
        PollFD -> m PollFD
forall (m :: * -> *) a. Monad m => a -> m a
return PollFD
o


-- | Get the value of the “@fd@” field.
-- When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to
-- 
-- @
-- 'Data.GI.Base.Attributes.get' pollFD #fd
-- @
getPollFDFd :: MonadIO m => PollFD -> m Int32
getPollFDFd :: PollFD -> m Int32
getPollFDFd PollFD
s = IO Int32 -> m Int32
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
forall a b. (a -> b) -> a -> b
$ PollFD -> (Ptr PollFD -> IO Int32) -> IO Int32
forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
withManagedPtr PollFD
s ((Ptr PollFD -> IO Int32) -> IO Int32)
-> (Ptr PollFD -> IO Int32) -> IO Int32
forall a b. (a -> b) -> a -> b
$ \Ptr PollFD
ptr -> do
    Int32
val <- Ptr Int32 -> IO Int32
forall a. Storable a => Ptr a -> IO a
peek (Ptr PollFD
ptr Ptr PollFD -> Int -> Ptr Int32
forall a b. Ptr a -> Int -> Ptr b
`plusPtr` Int
0) :: IO Int32
    Int32 -> IO Int32
forall (m :: * -> *) a. Monad m => a -> m a
return Int32
val

-- | Set the value of the “@fd@” field.
-- When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to
-- 
-- @
-- 'Data.GI.Base.Attributes.set' pollFD [ #fd 'Data.GI.Base.Attributes.:=' value ]
-- @
setPollFDFd :: MonadIO m => PollFD -> Int32 -> m ()
setPollFDFd :: PollFD -> Int32 -> m ()
setPollFDFd PollFD
s Int32
val = IO () -> m ()
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO () -> m ()) -> IO () -> m ()
forall a b. (a -> b) -> a -> b
$ PollFD -> (Ptr PollFD -> IO ()) -> IO ()
forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
withManagedPtr PollFD
s ((Ptr PollFD -> IO ()) -> IO ()) -> (Ptr PollFD -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr PollFD
ptr -> do
    Ptr Int32 -> Int32 -> IO ()
forall a. Storable a => Ptr a -> a -> IO ()
poke (Ptr PollFD
ptr Ptr PollFD -> Int -> Ptr Int32
forall a b. Ptr a -> Int -> Ptr b
`plusPtr` Int
0) (Int32
val :: Int32)

#if defined(ENABLE_OVERLOADING)
data PollFDFdFieldInfo
instance AttrInfo PollFDFdFieldInfo where
    type AttrBaseTypeConstraint PollFDFdFieldInfo = (~) PollFD
    type AttrAllowedOps PollFDFdFieldInfo = '[ 'AttrSet, 'AttrGet]
    type AttrSetTypeConstraint PollFDFdFieldInfo = (~) Int32
    type AttrTransferTypeConstraint PollFDFdFieldInfo = (~)Int32
    type AttrTransferType PollFDFdFieldInfo = Int32
    type AttrGetType PollFDFdFieldInfo = Int32
    type AttrLabel PollFDFdFieldInfo = "fd"
    type AttrOrigin PollFDFdFieldInfo = PollFD
    attrGet = getPollFDFd
    attrSet = setPollFDFd
    attrConstruct = undefined
    attrClear = undefined
    attrTransfer _ v = do
        return v

pollFD_fd :: AttrLabelProxy "fd"
pollFD_fd = AttrLabelProxy

#endif



#if defined(ENABLE_OVERLOADING)
instance O.HasAttributeList PollFD
type instance O.AttributeList PollFD = PollFDAttributeList
type PollFDAttributeList = ('[ '("fd", PollFDFdFieldInfo)] :: [(Symbol, *)])
#endif

-- method PollFD::init
-- method type : OrdinaryMethod
-- Args: [ Arg
--           { argCName = "fd"
--           , argType = TInterface Name { namespace = "Gst" , name = "PollFD" }
--           , direction = DirectionIn
--           , mayBeNull = False
--           , argDoc =
--               Documentation
--                 { rawDocText = Just "a #GstPollFD" , sinceVersion = Nothing }
--           , argScope = ScopeTypeInvalid
--           , argClosure = -1
--           , argDestroy = -1
--           , argCallerAllocates = False
--           , transfer = TransferNothing
--           }
--       ]
-- Lengths: []
-- returnType: Nothing
-- throws : False
-- Skip return : False

foreign import ccall "gst_poll_fd_init" gst_poll_fd_init :: 
    Ptr PollFD ->                           -- fd : TInterface (Name {namespace = "Gst", name = "PollFD"})
    IO ()

-- | Initializes /@fd@/. Alternatively you can initialize it with
-- @/GST_POLL_FD_INIT/@.
pollFDInit ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    PollFD
    -- ^ /@fd@/: a t'GI.Gst.Structs.PollFD.PollFD'
    -> m ()
pollFDInit :: PollFD -> m ()
pollFDInit PollFD
fd = IO () -> m ()
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO () -> m ()) -> IO () -> m ()
forall a b. (a -> b) -> a -> b
$ do
    Ptr PollFD
fd' <- PollFD -> IO (Ptr PollFD)
forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
unsafeManagedPtrGetPtr PollFD
fd
    Ptr PollFD -> IO ()
gst_poll_fd_init Ptr PollFD
fd'
    PollFD -> IO ()
forall a. ManagedPtrNewtype a => a -> IO ()
touchManagedPtr PollFD
fd
    () -> IO ()
forall (m :: * -> *) a. Monad m => a -> m a
return ()

#if defined(ENABLE_OVERLOADING)
data PollFDInitMethodInfo
instance (signature ~ (m ()), MonadIO m) => O.MethodInfo PollFDInitMethodInfo PollFD signature where
    overloadedMethod = pollFDInit

#endif

#if defined(ENABLE_OVERLOADING)
type family ResolvePollFDMethod (t :: Symbol) (o :: *) :: * where
    ResolvePollFDMethod "init" o = PollFDInitMethodInfo
    ResolvePollFDMethod l o = O.MethodResolutionFailed l o

instance (info ~ ResolvePollFDMethod t PollFD, O.MethodInfo info PollFD p) => OL.IsLabel t (PollFD -> p) where
#if MIN_VERSION_base(4,10,0)
    fromLabel = O.overloadedMethod @info
#else
    fromLabel _ = O.overloadedMethod @info
#endif

#endif