SocketAddressEnumerator.hs


{- |
Copyright  : Will Thompson, Iñaki García Etxebarria and Jonas Platte
License    : LGPL-2.1
Maintainer : Iñaki García Etxebarria (inaki@blueleaf.cc)

'GI.Gio.Objects.SocketAddressEnumerator.SocketAddressEnumerator' is an enumerator type for 'GI.Gio.Objects.SocketAddress.SocketAddress'
instances. It is returned by enumeration functions such as
'GI.Gio.Interfaces.SocketConnectable.socketConnectableEnumerate', which returns a 'GI.Gio.Objects.SocketAddressEnumerator.SocketAddressEnumerator'
to list all the @/GSocketAddresses/@ which could be used to connect to that
'GI.Gio.Interfaces.SocketConnectable.SocketConnectable'.

Enumeration is typically a blocking operation, so the asynchronous methods
'GI.Gio.Objects.SocketAddressEnumerator.socketAddressEnumeratorNextAsync' and
'GI.Gio.Objects.SocketAddressEnumerator.socketAddressEnumeratorNextFinish' should be used where possible.

Each 'GI.Gio.Objects.SocketAddressEnumerator.SocketAddressEnumerator' can only be enumerated once. Once
'GI.Gio.Objects.SocketAddressEnumerator.socketAddressEnumeratorNext' has returned 'Nothing' (and no error), further
enumeration with that 'GI.Gio.Objects.SocketAddressEnumerator.SocketAddressEnumerator' is not possible, and it can
be unreffed.
-}

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

module GI.Gio.Objects.SocketAddressEnumerator
    ( 

-- * Exported types
    SocketAddressEnumerator(..)             ,
    IsSocketAddressEnumerator               ,
    toSocketAddressEnumerator               ,
    noSocketAddressEnumerator               ,


 -- * Methods
-- ** next #method:next#

#if ENABLE_OVERLOADING
    SocketAddressEnumeratorNextMethodInfo   ,
#endif
    socketAddressEnumeratorNext             ,


-- ** nextAsync #method:nextAsync#

#if ENABLE_OVERLOADING
    SocketAddressEnumeratorNextAsyncMethodInfo,
#endif
    socketAddressEnumeratorNextAsync        ,


-- ** nextFinish #method:nextFinish#

#if ENABLE_OVERLOADING
    SocketAddressEnumeratorNextFinishMethodInfo,
#endif
    socketAddressEnumeratorNextFinish       ,




    ) 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.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.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

import qualified GI.GObject.Objects.Object as GObject.Object
import qualified GI.Gio.Callbacks as Gio.Callbacks
import {-# SOURCE #-} qualified GI.Gio.Interfaces.AsyncResult as Gio.AsyncResult
import {-# SOURCE #-} qualified GI.Gio.Objects.Cancellable as Gio.Cancellable
import {-# SOURCE #-} qualified GI.Gio.Objects.SocketAddress as Gio.SocketAddress

-- | Memory-managed wrapper type.
newtype SocketAddressEnumerator = SocketAddressEnumerator (ManagedPtr SocketAddressEnumerator)
foreign import ccall "g_socket_address_enumerator_get_type"
    c_g_socket_address_enumerator_get_type :: IO GType

instance GObject SocketAddressEnumerator where
    gobjectType = c_g_socket_address_enumerator_get_type
    

-- | Type class for types which can be safely cast to `SocketAddressEnumerator`, for instance with `toSocketAddressEnumerator`.
class (GObject o, O.IsDescendantOf SocketAddressEnumerator o) => IsSocketAddressEnumerator o
instance (GObject o, O.IsDescendantOf SocketAddressEnumerator o) => IsSocketAddressEnumerator o

instance O.HasParentTypes SocketAddressEnumerator
type instance O.ParentTypes SocketAddressEnumerator = '[GObject.Object.Object]

-- | Cast to `SocketAddressEnumerator`, for types for which this is known to be safe. For general casts, use `Data.GI.Base.ManagedPtr.castTo`.
toSocketAddressEnumerator :: (MonadIO m, IsSocketAddressEnumerator o) => o -> m SocketAddressEnumerator
toSocketAddressEnumerator = liftIO . unsafeCastTo SocketAddressEnumerator

-- | A convenience alias for `Nothing` :: `Maybe` `SocketAddressEnumerator`.
noSocketAddressEnumerator :: Maybe SocketAddressEnumerator
noSocketAddressEnumerator = Nothing

#if ENABLE_OVERLOADING
type family ResolveSocketAddressEnumeratorMethod (t :: Symbol) (o :: *) :: * where
    ResolveSocketAddressEnumeratorMethod "bindProperty" o = GObject.Object.ObjectBindPropertyMethodInfo
    ResolveSocketAddressEnumeratorMethod "bindPropertyFull" o = GObject.Object.ObjectBindPropertyFullMethodInfo
    ResolveSocketAddressEnumeratorMethod "forceFloating" o = GObject.Object.ObjectForceFloatingMethodInfo
    ResolveSocketAddressEnumeratorMethod "freezeNotify" o = GObject.Object.ObjectFreezeNotifyMethodInfo
    ResolveSocketAddressEnumeratorMethod "getv" o = GObject.Object.ObjectGetvMethodInfo
    ResolveSocketAddressEnumeratorMethod "isFloating" o = GObject.Object.ObjectIsFloatingMethodInfo
    ResolveSocketAddressEnumeratorMethod "next" o = SocketAddressEnumeratorNextMethodInfo
    ResolveSocketAddressEnumeratorMethod "nextAsync" o = SocketAddressEnumeratorNextAsyncMethodInfo
    ResolveSocketAddressEnumeratorMethod "nextFinish" o = SocketAddressEnumeratorNextFinishMethodInfo
    ResolveSocketAddressEnumeratorMethod "notify" o = GObject.Object.ObjectNotifyMethodInfo
    ResolveSocketAddressEnumeratorMethod "notifyByPspec" o = GObject.Object.ObjectNotifyByPspecMethodInfo
    ResolveSocketAddressEnumeratorMethod "ref" o = GObject.Object.ObjectRefMethodInfo
    ResolveSocketAddressEnumeratorMethod "refSink" o = GObject.Object.ObjectRefSinkMethodInfo
    ResolveSocketAddressEnumeratorMethod "runDispose" o = GObject.Object.ObjectRunDisposeMethodInfo
    ResolveSocketAddressEnumeratorMethod "stealData" o = GObject.Object.ObjectStealDataMethodInfo
    ResolveSocketAddressEnumeratorMethod "stealQdata" o = GObject.Object.ObjectStealQdataMethodInfo
    ResolveSocketAddressEnumeratorMethod "thawNotify" o = GObject.Object.ObjectThawNotifyMethodInfo
    ResolveSocketAddressEnumeratorMethod "unref" o = GObject.Object.ObjectUnrefMethodInfo
    ResolveSocketAddressEnumeratorMethod "watchClosure" o = GObject.Object.ObjectWatchClosureMethodInfo
    ResolveSocketAddressEnumeratorMethod "getData" o = GObject.Object.ObjectGetDataMethodInfo
    ResolveSocketAddressEnumeratorMethod "getProperty" o = GObject.Object.ObjectGetPropertyMethodInfo
    ResolveSocketAddressEnumeratorMethod "getQdata" o = GObject.Object.ObjectGetQdataMethodInfo
    ResolveSocketAddressEnumeratorMethod "setData" o = GObject.Object.ObjectSetDataMethodInfo
    ResolveSocketAddressEnumeratorMethod "setProperty" o = GObject.Object.ObjectSetPropertyMethodInfo
    ResolveSocketAddressEnumeratorMethod l o = O.MethodResolutionFailed l o

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

#endif

#if ENABLE_OVERLOADING
instance O.HasAttributeList SocketAddressEnumerator
type instance O.AttributeList SocketAddressEnumerator = SocketAddressEnumeratorAttributeList
type SocketAddressEnumeratorAttributeList = ('[ ] :: [(Symbol, *)])
#endif

#if ENABLE_OVERLOADING
#endif

#if ENABLE_OVERLOADING
type instance O.SignalList SocketAddressEnumerator = SocketAddressEnumeratorSignalList
type SocketAddressEnumeratorSignalList = ('[ '("notify", GObject.Object.ObjectNotifySignalInfo)] :: [(Symbol, *)])

#endif

-- method SocketAddressEnumerator::next
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "enumerator", argType = TInterface (Name {namespace = "Gio", name = "SocketAddressEnumerator"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GSocketAddressEnumerator", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "cancellable", argType = TInterface (Name {namespace = "Gio", name = "Cancellable"}), direction = DirectionIn, mayBeNull = True, argDoc = Documentation {rawDocText = Just "optional #GCancellable object, %NULL to ignore.", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TInterface (Name {namespace = "Gio", name = "SocketAddress"}))
-- throws : True
-- Skip return : False

foreign import ccall "g_socket_address_enumerator_next" g_socket_address_enumerator_next :: 
    Ptr SocketAddressEnumerator ->          -- enumerator : TInterface (Name {namespace = "Gio", name = "SocketAddressEnumerator"})
    Ptr Gio.Cancellable.Cancellable ->      -- cancellable : TInterface (Name {namespace = "Gio", name = "Cancellable"})
    Ptr (Ptr GError) ->                     -- error
    IO (Ptr Gio.SocketAddress.SocketAddress)

{- |
Retrieves the next 'GI.Gio.Objects.SocketAddress.SocketAddress' from /@enumerator@/. Note that this
may block for some amount of time. (Eg, a 'GI.Gio.Objects.NetworkAddress.NetworkAddress' may need
to do a DNS lookup before it can return an address.) Use
'GI.Gio.Objects.SocketAddressEnumerator.socketAddressEnumeratorNextAsync' if you need to avoid
blocking.

If /@enumerator@/ is expected to yield addresses, but for some reason
is unable to (eg, because of a DNS error), then the first call to
'GI.Gio.Objects.SocketAddressEnumerator.socketAddressEnumeratorNext' will return an appropriate error
in */@error@/. However, if the first call to
'GI.Gio.Objects.SocketAddressEnumerator.socketAddressEnumeratorNext' succeeds, then any further
internal errors (other than /@cancellable@/ being triggered) will be
ignored.
-}
socketAddressEnumeratorNext ::
    (B.CallStack.HasCallStack, MonadIO m, IsSocketAddressEnumerator a, Gio.Cancellable.IsCancellable b) =>
    a
    {- ^ /@enumerator@/: a 'GI.Gio.Objects.SocketAddressEnumerator.SocketAddressEnumerator' -}
    -> Maybe (b)
    {- ^ /@cancellable@/: optional 'GI.Gio.Objects.Cancellable.Cancellable' object, 'Nothing' to ignore. -}
    -> m Gio.SocketAddress.SocketAddress
    {- ^ __Returns:__ a 'GI.Gio.Objects.SocketAddress.SocketAddress' (owned by the caller), or 'Nothing' on
    error (in which case */@error@/ will be set) or if there are no
    more addresses. /(Can throw 'Data.GI.Base.GError.GError')/ -}
socketAddressEnumeratorNext enumerator cancellable = liftIO $ do
    enumerator' <- unsafeManagedPtrCastPtr enumerator
    maybeCancellable <- case cancellable of
        Nothing -> return nullPtr
        Just jCancellable -> do
            jCancellable' <- unsafeManagedPtrCastPtr jCancellable
            return jCancellable'
    onException (do
        result <- propagateGError $ g_socket_address_enumerator_next enumerator' maybeCancellable
        checkUnexpectedReturnNULL "socketAddressEnumeratorNext" result
        result' <- (wrapObject Gio.SocketAddress.SocketAddress) result
        touchManagedPtr enumerator
        whenJust cancellable touchManagedPtr
        return result'
     ) (do
        return ()
     )

#if ENABLE_OVERLOADING
data SocketAddressEnumeratorNextMethodInfo
instance (signature ~ (Maybe (b) -> m Gio.SocketAddress.SocketAddress), MonadIO m, IsSocketAddressEnumerator a, Gio.Cancellable.IsCancellable b) => O.MethodInfo SocketAddressEnumeratorNextMethodInfo a signature where
    overloadedMethod _ = socketAddressEnumeratorNext

#endif

-- method SocketAddressEnumerator::next_async
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "enumerator", argType = TInterface (Name {namespace = "Gio", name = "SocketAddressEnumerator"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GSocketAddressEnumerator", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "cancellable", argType = TInterface (Name {namespace = "Gio", name = "Cancellable"}), direction = DirectionIn, mayBeNull = True, argDoc = Documentation {rawDocText = Just "optional #GCancellable object, %NULL to ignore.", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "callback", argType = TInterface (Name {namespace = "Gio", name = "AsyncReadyCallback"}), direction = DirectionIn, mayBeNull = True, argDoc = Documentation {rawDocText = Just "a #GAsyncReadyCallback to call when the request\n    is satisfied", sinceVersion = Nothing}, argScope = ScopeTypeAsync, argClosure = 3, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "user_data", argType = TBasicType TPtr, direction = DirectionIn, mayBeNull = True, argDoc = Documentation {rawDocText = Just "the data to pass to callback function", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "g_socket_address_enumerator_next_async" g_socket_address_enumerator_next_async :: 
    Ptr SocketAddressEnumerator ->          -- enumerator : TInterface (Name {namespace = "Gio", name = "SocketAddressEnumerator"})
    Ptr Gio.Cancellable.Cancellable ->      -- cancellable : TInterface (Name {namespace = "Gio", name = "Cancellable"})
    FunPtr Gio.Callbacks.C_AsyncReadyCallback -> -- callback : TInterface (Name {namespace = "Gio", name = "AsyncReadyCallback"})
    Ptr () ->                               -- user_data : TBasicType TPtr
    IO ()

{- |
Asynchronously retrieves the next 'GI.Gio.Objects.SocketAddress.SocketAddress' from /@enumerator@/
and then calls /@callback@/, which must call
'GI.Gio.Objects.SocketAddressEnumerator.socketAddressEnumeratorNextFinish' to get the result.

It is an error to call this multiple times before the previous callback has finished.
-}
socketAddressEnumeratorNextAsync ::
    (B.CallStack.HasCallStack, MonadIO m, IsSocketAddressEnumerator a, Gio.Cancellable.IsCancellable b) =>
    a
    {- ^ /@enumerator@/: a 'GI.Gio.Objects.SocketAddressEnumerator.SocketAddressEnumerator' -}
    -> Maybe (b)
    {- ^ /@cancellable@/: optional 'GI.Gio.Objects.Cancellable.Cancellable' object, 'Nothing' to ignore. -}
    -> Maybe (Gio.Callbacks.AsyncReadyCallback)
    {- ^ /@callback@/: a 'GI.Gio.Callbacks.AsyncReadyCallback' to call when the request
    is satisfied -}
    -> m ()
socketAddressEnumeratorNextAsync enumerator cancellable callback = liftIO $ do
    enumerator' <- unsafeManagedPtrCastPtr enumerator
    maybeCancellable <- case cancellable of
        Nothing -> return nullPtr
        Just jCancellable -> do
            jCancellable' <- unsafeManagedPtrCastPtr jCancellable
            return jCancellable'
    maybeCallback <- case callback of
        Nothing -> return (castPtrToFunPtr nullPtr)
        Just jCallback -> do
            ptrcallback <- callocMem :: IO (Ptr (FunPtr Gio.Callbacks.C_AsyncReadyCallback))
            jCallback' <- Gio.Callbacks.mk_AsyncReadyCallback (Gio.Callbacks.wrap_AsyncReadyCallback (Just ptrcallback) (Gio.Callbacks.drop_closures_AsyncReadyCallback jCallback))
            poke ptrcallback jCallback'
            return jCallback'
    let userData = nullPtr
    g_socket_address_enumerator_next_async enumerator' maybeCancellable maybeCallback userData
    touchManagedPtr enumerator
    whenJust cancellable touchManagedPtr
    return ()

#if ENABLE_OVERLOADING
data SocketAddressEnumeratorNextAsyncMethodInfo
instance (signature ~ (Maybe (b) -> Maybe (Gio.Callbacks.AsyncReadyCallback) -> m ()), MonadIO m, IsSocketAddressEnumerator a, Gio.Cancellable.IsCancellable b) => O.MethodInfo SocketAddressEnumeratorNextAsyncMethodInfo a signature where
    overloadedMethod _ = socketAddressEnumeratorNextAsync

#endif

-- method SocketAddressEnumerator::next_finish
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "enumerator", argType = TInterface (Name {namespace = "Gio", name = "SocketAddressEnumerator"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GSocketAddressEnumerator", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "result", argType = TInterface (Name {namespace = "Gio", name = "AsyncResult"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GAsyncResult", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TInterface (Name {namespace = "Gio", name = "SocketAddress"}))
-- throws : True
-- Skip return : False

foreign import ccall "g_socket_address_enumerator_next_finish" g_socket_address_enumerator_next_finish :: 
    Ptr SocketAddressEnumerator ->          -- enumerator : TInterface (Name {namespace = "Gio", name = "SocketAddressEnumerator"})
    Ptr Gio.AsyncResult.AsyncResult ->      -- result : TInterface (Name {namespace = "Gio", name = "AsyncResult"})
    Ptr (Ptr GError) ->                     -- error
    IO (Ptr Gio.SocketAddress.SocketAddress)

{- |
Retrieves the result of a completed call to
'GI.Gio.Objects.SocketAddressEnumerator.socketAddressEnumeratorNextAsync'. See
'GI.Gio.Objects.SocketAddressEnumerator.socketAddressEnumeratorNext' for more information about
error handling.
-}
socketAddressEnumeratorNextFinish ::
    (B.CallStack.HasCallStack, MonadIO m, IsSocketAddressEnumerator a, Gio.AsyncResult.IsAsyncResult b) =>
    a
    {- ^ /@enumerator@/: a 'GI.Gio.Objects.SocketAddressEnumerator.SocketAddressEnumerator' -}
    -> b
    {- ^ /@result@/: a 'GI.Gio.Interfaces.AsyncResult.AsyncResult' -}
    -> m Gio.SocketAddress.SocketAddress
    {- ^ __Returns:__ a 'GI.Gio.Objects.SocketAddress.SocketAddress' (owned by the caller), or 'Nothing' on
    error (in which case */@error@/ will be set) or if there are no
    more addresses. /(Can throw 'Data.GI.Base.GError.GError')/ -}
socketAddressEnumeratorNextFinish enumerator result_ = liftIO $ do
    enumerator' <- unsafeManagedPtrCastPtr enumerator
    result_' <- unsafeManagedPtrCastPtr result_
    onException (do
        result <- propagateGError $ g_socket_address_enumerator_next_finish enumerator' result_'
        checkUnexpectedReturnNULL "socketAddressEnumeratorNextFinish" result
        result' <- (wrapObject Gio.SocketAddress.SocketAddress) result
        touchManagedPtr enumerator
        touchManagedPtr result_
        return result'
     ) (do
        return ()
     )

#if ENABLE_OVERLOADING
data SocketAddressEnumeratorNextFinishMethodInfo
instance (signature ~ (b -> m Gio.SocketAddress.SocketAddress), MonadIO m, IsSocketAddressEnumerator a, Gio.AsyncResult.IsAsyncResult b) => O.MethodInfo SocketAddressEnumeratorNextFinishMethodInfo a signature where
    overloadedMethod _ = socketAddressEnumeratorNextFinish

#endif