{-# LANGUAGE TypeApplications #-}


-- | Copyright  : Will Thompson and Iñaki García Etxebarria
-- License    : LGPL-2.1
-- Maintainer : Iñaki García Etxebarria
-- 
-- The @PangoAttrClass@ structure stores the type and operations for
-- a particular type of attribute.
-- 
-- The functions in this structure should not be called directly. Instead,
-- one should use the wrapper functions provided for @PangoAttribute@.

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

module GI.Pango.Structs.AttrClass
    ( 

-- * Exported types
    AttrClass(..)                           ,
    newZeroAttrClass                        ,


 -- * Methods

#if defined(ENABLE_OVERLOADING)
    ResolveAttrClassMethod                  ,
#endif



 -- * Properties


-- ** copy #attr:copy#
-- | /No description available in the introspection data./

#if defined(ENABLE_OVERLOADING)
    attrClass_copy                          ,
#endif
    clearAttrClassCopy                      ,
    getAttrClassCopy                        ,
    setAttrClassCopy                        ,


-- ** destroy #attr:destroy#
-- | /No description available in the introspection data./

#if defined(ENABLE_OVERLOADING)
    attrClass_destroy                       ,
#endif
    clearAttrClassDestroy                   ,
    getAttrClassDestroy                     ,
    setAttrClassDestroy                     ,


-- ** equal #attr:equal#
-- | /No description available in the introspection data./

#if defined(ENABLE_OVERLOADING)
    attrClass_equal                         ,
#endif
    clearAttrClassEqual                     ,
    getAttrClassEqual                       ,
    setAttrClassEqual                       ,


-- ** type #attr:type#
-- | the type ID for this attribute

#if defined(ENABLE_OVERLOADING)
    attrClass_type                          ,
#endif
    getAttrClassType                        ,
    setAttrClassType                        ,




    ) 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.GArray as B.GArray
import qualified Data.GI.Base.GClosure as B.GClosure
import qualified Data.GI.Base.GError as B.GError
import qualified Data.GI.Base.GHashTable as B.GHT
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.Coerce as Coerce
import qualified Data.Text as T
import qualified Data.Kind as DK
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 GHC.Records as R

import qualified GI.Pango.Callbacks as Pango.Callbacks
import {-# SOURCE #-} qualified GI.Pango.Enums as Pango.Enums

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

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

instance BoxedPtr AttrClass where
    boxedPtrCopy :: AttrClass -> IO AttrClass
boxedPtrCopy = \AttrClass
p -> forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
B.ManagedPtr.withManagedPtr AttrClass
p (forall a. (HasCallStack, CallocPtr a) => Int -> Ptr a -> IO (Ptr a)
copyBytes Int
16 forall (m :: * -> *) a b c.
Monad m =>
(a -> m b) -> (b -> m c) -> a -> m c
>=> forall a.
(HasCallStack, BoxedPtr a) =>
(ManagedPtr a -> a) -> Ptr a -> IO a
B.ManagedPtr.wrapPtr ManagedPtr AttrClass -> AttrClass
AttrClass)
    boxedPtrFree :: AttrClass -> IO ()
boxedPtrFree = \AttrClass
x -> forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
SP.withManagedPtr AttrClass
x forall a. Ptr a -> IO ()
SP.freeMem
instance CallocPtr AttrClass where
    boxedPtrCalloc :: IO (Ptr AttrClass)
boxedPtrCalloc = forall a. Int -> IO (Ptr a)
callocBytes Int
16


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

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


-- | Get the value of the “@type@” field.
-- When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to
-- 
-- @
-- 'Data.GI.Base.Attributes.get' attrClass #type
-- @
getAttrClassType :: MonadIO m => AttrClass -> m Pango.Enums.AttrType
getAttrClassType :: forall (m :: * -> *). MonadIO m => AttrClass -> m AttrType
getAttrClassType AttrClass
s = forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$ forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
withManagedPtr AttrClass
s forall a b. (a -> b) -> a -> b
$ \Ptr AttrClass
ptr -> do
    CUInt
val <- forall a. Storable a => Ptr a -> IO a
peek (Ptr AttrClass
ptr forall a b. Ptr a -> Int -> Ptr b
`plusPtr` Int
0) :: IO CUInt
    let val' :: AttrType
val' = (forall a. Enum a => Int -> a
toEnum forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a b. (Integral a, Num b) => a -> b
fromIntegral) CUInt
val
    forall (m :: * -> *) a. Monad m => a -> m a
return AttrType
val'

-- | Set the value of the “@type@” field.
-- When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to
-- 
-- @
-- 'Data.GI.Base.Attributes.set' attrClass [ #type 'Data.GI.Base.Attributes.:=' value ]
-- @
setAttrClassType :: MonadIO m => AttrClass -> Pango.Enums.AttrType -> m ()
setAttrClassType :: forall (m :: * -> *). MonadIO m => AttrClass -> AttrType -> m ()
setAttrClassType AttrClass
s AttrType
val = forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$ forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
withManagedPtr AttrClass
s forall a b. (a -> b) -> a -> b
$ \Ptr AttrClass
ptr -> do
    let val' :: CUInt
val' = (forall a b. (Integral a, Num b) => a -> b
fromIntegral forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. Enum a => a -> Int
fromEnum) AttrType
val
    forall a. Storable a => Ptr a -> a -> IO ()
poke (Ptr AttrClass
ptr forall a b. Ptr a -> Int -> Ptr b
`plusPtr` Int
0) (CUInt
val' :: CUInt)

#if defined(ENABLE_OVERLOADING)
data AttrClassTypeFieldInfo
instance AttrInfo AttrClassTypeFieldInfo where
    type AttrBaseTypeConstraint AttrClassTypeFieldInfo = (~) AttrClass
    type AttrAllowedOps AttrClassTypeFieldInfo = '[ 'AttrSet, 'AttrGet]
    type AttrSetTypeConstraint AttrClassTypeFieldInfo = (~) Pango.Enums.AttrType
    type AttrTransferTypeConstraint AttrClassTypeFieldInfo = (~)Pango.Enums.AttrType
    type AttrTransferType AttrClassTypeFieldInfo = Pango.Enums.AttrType
    type AttrGetType AttrClassTypeFieldInfo = Pango.Enums.AttrType
    type AttrLabel AttrClassTypeFieldInfo = "type"
    type AttrOrigin AttrClassTypeFieldInfo = AttrClass
    attrGet = getAttrClassType
    attrSet = setAttrClassType
    attrConstruct = undefined
    attrClear = undefined
    attrTransfer _ v = do
        return v
    dbgAttrInfo = P.Just (O.ResolvedSymbolInfo {
        O.resolvedSymbolName = "GI.Pango.Structs.AttrClass.type"
        , O.resolvedSymbolURL = "https://hackage.haskell.org/package/gi-pango-1.0.27/docs/GI-Pango-Structs-AttrClass.html#g:attr:type"
        })

attrClass_type :: AttrLabelProxy "type"
attrClass_type = AttrLabelProxy

#endif


-- | Get the value of the “@copy@” field.
-- When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to
-- 
-- @
-- 'Data.GI.Base.Attributes.get' attrClass #copy
-- @
getAttrClassCopy :: MonadIO m => AttrClass -> m (Maybe Pango.Callbacks.AttrClassCopyFieldCallback)
getAttrClassCopy :: forall (m :: * -> *).
MonadIO m =>
AttrClass -> m (Maybe AttrClassCopyFieldCallback)
getAttrClassCopy AttrClass
s = forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$ forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
withManagedPtr AttrClass
s forall a b. (a -> b) -> a -> b
$ \Ptr AttrClass
ptr -> do
    FunPtr C_AttrClassCopyFieldCallback
val <- forall a. Storable a => Ptr a -> IO a
peek (Ptr AttrClass
ptr forall a b. Ptr a -> Int -> Ptr b
`plusPtr` Int
4) :: IO (FunPtr Pango.Callbacks.C_AttrClassCopyFieldCallback)
    Maybe AttrClassCopyFieldCallback
result <- forall a b. FunPtr a -> (FunPtr a -> IO b) -> IO (Maybe b)
SP.convertFunPtrIfNonNull FunPtr C_AttrClassCopyFieldCallback
val forall a b. (a -> b) -> a -> b
$ \FunPtr C_AttrClassCopyFieldCallback
val' -> do
        let val'' :: AttrClassCopyFieldCallback
val'' = forall (m :: * -> *).
(HasCallStack, MonadIO m) =>
FunPtr C_AttrClassCopyFieldCallback -> Attribute -> m Attribute
Pango.Callbacks.dynamic_AttrClassCopyFieldCallback FunPtr C_AttrClassCopyFieldCallback
val'
        forall (m :: * -> *) a. Monad m => a -> m a
return AttrClassCopyFieldCallback
val''
    forall (m :: * -> *) a. Monad m => a -> m a
return Maybe AttrClassCopyFieldCallback
result

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

-- | Set the value of the “@copy@” field to `Nothing`.
-- When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to
-- 
-- @
-- 'Data.GI.Base.Attributes.clear' #copy
-- @
clearAttrClassCopy :: MonadIO m => AttrClass -> m ()
clearAttrClassCopy :: forall (m :: * -> *). MonadIO m => AttrClass -> m ()
clearAttrClassCopy AttrClass
s = forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$ forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
withManagedPtr AttrClass
s forall a b. (a -> b) -> a -> b
$ \Ptr AttrClass
ptr -> do
    forall a. Storable a => Ptr a -> a -> IO ()
poke (Ptr AttrClass
ptr forall a b. Ptr a -> Int -> Ptr b
`plusPtr` Int
4) (forall a. FunPtr a
FP.nullFunPtr :: FunPtr Pango.Callbacks.C_AttrClassCopyFieldCallback)

#if defined(ENABLE_OVERLOADING)
data AttrClassCopyFieldInfo
instance AttrInfo AttrClassCopyFieldInfo where
    type AttrBaseTypeConstraint AttrClassCopyFieldInfo = (~) AttrClass
    type AttrAllowedOps AttrClassCopyFieldInfo = '[ 'AttrSet, 'AttrGet, 'AttrClear]
    type AttrSetTypeConstraint AttrClassCopyFieldInfo = (~) (FunPtr Pango.Callbacks.C_AttrClassCopyFieldCallback)
    type AttrTransferTypeConstraint AttrClassCopyFieldInfo = (~)Pango.Callbacks.AttrClassCopyFieldCallback
    type AttrTransferType AttrClassCopyFieldInfo = (FunPtr Pango.Callbacks.C_AttrClassCopyFieldCallback)
    type AttrGetType AttrClassCopyFieldInfo = Maybe Pango.Callbacks.AttrClassCopyFieldCallback
    type AttrLabel AttrClassCopyFieldInfo = "copy"
    type AttrOrigin AttrClassCopyFieldInfo = AttrClass
    attrGet = getAttrClassCopy
    attrSet = setAttrClassCopy
    attrConstruct = undefined
    attrClear = clearAttrClassCopy
    attrTransfer _ v = do
        Pango.Callbacks.mk_AttrClassCopyFieldCallback (Pango.Callbacks.wrap_AttrClassCopyFieldCallback Nothing v)
    dbgAttrInfo = P.Just (O.ResolvedSymbolInfo {
        O.resolvedSymbolName = "GI.Pango.Structs.AttrClass.copy"
        , O.resolvedSymbolURL = "https://hackage.haskell.org/package/gi-pango-1.0.27/docs/GI-Pango-Structs-AttrClass.html#g:attr:copy"
        })

attrClass_copy :: AttrLabelProxy "copy"
attrClass_copy = AttrLabelProxy

#endif


-- | Get the value of the “@destroy@” field.
-- When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to
-- 
-- @
-- 'Data.GI.Base.Attributes.get' attrClass #destroy
-- @
getAttrClassDestroy :: MonadIO m => AttrClass -> m (Maybe Pango.Callbacks.AttrClassDestroyFieldCallback)
getAttrClassDestroy :: forall (m :: * -> *).
MonadIO m =>
AttrClass -> m (Maybe AttrClassDestroyFieldCallback)
getAttrClassDestroy AttrClass
s = forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$ forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
withManagedPtr AttrClass
s forall a b. (a -> b) -> a -> b
$ \Ptr AttrClass
ptr -> do
    FunPtr C_AttrClassDestroyFieldCallback
val <- forall a. Storable a => Ptr a -> IO a
peek (Ptr AttrClass
ptr forall a b. Ptr a -> Int -> Ptr b
`plusPtr` Int
8) :: IO (FunPtr Pango.Callbacks.C_AttrClassDestroyFieldCallback)
    Maybe AttrClassDestroyFieldCallback
result <- forall a b. FunPtr a -> (FunPtr a -> IO b) -> IO (Maybe b)
SP.convertFunPtrIfNonNull FunPtr C_AttrClassDestroyFieldCallback
val forall a b. (a -> b) -> a -> b
$ \FunPtr C_AttrClassDestroyFieldCallback
val' -> do
        let val'' :: AttrClassDestroyFieldCallback
val'' = forall (m :: * -> *).
(HasCallStack, MonadIO m) =>
FunPtr C_AttrClassDestroyFieldCallback -> Attribute -> m ()
Pango.Callbacks.dynamic_AttrClassDestroyFieldCallback FunPtr C_AttrClassDestroyFieldCallback
val'
        forall (m :: * -> *) a. Monad m => a -> m a
return AttrClassDestroyFieldCallback
val''
    forall (m :: * -> *) a. Monad m => a -> m a
return Maybe AttrClassDestroyFieldCallback
result

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

-- | Set the value of the “@destroy@” field to `Nothing`.
-- When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to
-- 
-- @
-- 'Data.GI.Base.Attributes.clear' #destroy
-- @
clearAttrClassDestroy :: MonadIO m => AttrClass -> m ()
clearAttrClassDestroy :: forall (m :: * -> *). MonadIO m => AttrClass -> m ()
clearAttrClassDestroy AttrClass
s = forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$ forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
withManagedPtr AttrClass
s forall a b. (a -> b) -> a -> b
$ \Ptr AttrClass
ptr -> do
    forall a. Storable a => Ptr a -> a -> IO ()
poke (Ptr AttrClass
ptr forall a b. Ptr a -> Int -> Ptr b
`plusPtr` Int
8) (forall a. FunPtr a
FP.nullFunPtr :: FunPtr Pango.Callbacks.C_AttrClassDestroyFieldCallback)

#if defined(ENABLE_OVERLOADING)
data AttrClassDestroyFieldInfo
instance AttrInfo AttrClassDestroyFieldInfo where
    type AttrBaseTypeConstraint AttrClassDestroyFieldInfo = (~) AttrClass
    type AttrAllowedOps AttrClassDestroyFieldInfo = '[ 'AttrSet, 'AttrGet, 'AttrClear]
    type AttrSetTypeConstraint AttrClassDestroyFieldInfo = (~) (FunPtr Pango.Callbacks.C_AttrClassDestroyFieldCallback)
    type AttrTransferTypeConstraint AttrClassDestroyFieldInfo = (~)Pango.Callbacks.AttrClassDestroyFieldCallback
    type AttrTransferType AttrClassDestroyFieldInfo = (FunPtr Pango.Callbacks.C_AttrClassDestroyFieldCallback)
    type AttrGetType AttrClassDestroyFieldInfo = Maybe Pango.Callbacks.AttrClassDestroyFieldCallback
    type AttrLabel AttrClassDestroyFieldInfo = "destroy"
    type AttrOrigin AttrClassDestroyFieldInfo = AttrClass
    attrGet = getAttrClassDestroy
    attrSet = setAttrClassDestroy
    attrConstruct = undefined
    attrClear = clearAttrClassDestroy
    attrTransfer _ v = do
        Pango.Callbacks.mk_AttrClassDestroyFieldCallback (Pango.Callbacks.wrap_AttrClassDestroyFieldCallback Nothing v)
    dbgAttrInfo = P.Just (O.ResolvedSymbolInfo {
        O.resolvedSymbolName = "GI.Pango.Structs.AttrClass.destroy"
        , O.resolvedSymbolURL = "https://hackage.haskell.org/package/gi-pango-1.0.27/docs/GI-Pango-Structs-AttrClass.html#g:attr:destroy"
        })

attrClass_destroy :: AttrLabelProxy "destroy"
attrClass_destroy = AttrLabelProxy

#endif


-- | Get the value of the “@equal@” field.
-- When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to
-- 
-- @
-- 'Data.GI.Base.Attributes.get' attrClass #equal
-- @
getAttrClassEqual :: MonadIO m => AttrClass -> m (Maybe Pango.Callbacks.AttrClassEqualFieldCallback)
getAttrClassEqual :: forall (m :: * -> *).
MonadIO m =>
AttrClass -> m (Maybe AttrClassEqualFieldCallback)
getAttrClassEqual AttrClass
s = forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$ forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
withManagedPtr AttrClass
s forall a b. (a -> b) -> a -> b
$ \Ptr AttrClass
ptr -> do
    FunPtr C_AttrClassEqualFieldCallback
val <- forall a. Storable a => Ptr a -> IO a
peek (Ptr AttrClass
ptr forall a b. Ptr a -> Int -> Ptr b
`plusPtr` Int
12) :: IO (FunPtr Pango.Callbacks.C_AttrClassEqualFieldCallback)
    Maybe AttrClassEqualFieldCallback
result <- forall a b. FunPtr a -> (FunPtr a -> IO b) -> IO (Maybe b)
SP.convertFunPtrIfNonNull FunPtr C_AttrClassEqualFieldCallback
val forall a b. (a -> b) -> a -> b
$ \FunPtr C_AttrClassEqualFieldCallback
val' -> do
        let val'' :: AttrClassEqualFieldCallback
val'' = forall (m :: * -> *).
(HasCallStack, MonadIO m) =>
FunPtr C_AttrClassEqualFieldCallback
-> Attribute -> Attribute -> m Bool
Pango.Callbacks.dynamic_AttrClassEqualFieldCallback FunPtr C_AttrClassEqualFieldCallback
val'
        forall (m :: * -> *) a. Monad m => a -> m a
return AttrClassEqualFieldCallback
val''
    forall (m :: * -> *) a. Monad m => a -> m a
return Maybe AttrClassEqualFieldCallback
result

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

-- | Set the value of the “@equal@” field to `Nothing`.
-- When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to
-- 
-- @
-- 'Data.GI.Base.Attributes.clear' #equal
-- @
clearAttrClassEqual :: MonadIO m => AttrClass -> m ()
clearAttrClassEqual :: forall (m :: * -> *). MonadIO m => AttrClass -> m ()
clearAttrClassEqual AttrClass
s = forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$ forall a c.
(HasCallStack, ManagedPtrNewtype a) =>
a -> (Ptr a -> IO c) -> IO c
withManagedPtr AttrClass
s forall a b. (a -> b) -> a -> b
$ \Ptr AttrClass
ptr -> do
    forall a. Storable a => Ptr a -> a -> IO ()
poke (Ptr AttrClass
ptr forall a b. Ptr a -> Int -> Ptr b
`plusPtr` Int
12) (forall a. FunPtr a
FP.nullFunPtr :: FunPtr Pango.Callbacks.C_AttrClassEqualFieldCallback)

#if defined(ENABLE_OVERLOADING)
data AttrClassEqualFieldInfo
instance AttrInfo AttrClassEqualFieldInfo where
    type AttrBaseTypeConstraint AttrClassEqualFieldInfo = (~) AttrClass
    type AttrAllowedOps AttrClassEqualFieldInfo = '[ 'AttrSet, 'AttrGet, 'AttrClear]
    type AttrSetTypeConstraint AttrClassEqualFieldInfo = (~) (FunPtr Pango.Callbacks.C_AttrClassEqualFieldCallback)
    type AttrTransferTypeConstraint AttrClassEqualFieldInfo = (~)Pango.Callbacks.AttrClassEqualFieldCallback
    type AttrTransferType AttrClassEqualFieldInfo = (FunPtr Pango.Callbacks.C_AttrClassEqualFieldCallback)
    type AttrGetType AttrClassEqualFieldInfo = Maybe Pango.Callbacks.AttrClassEqualFieldCallback
    type AttrLabel AttrClassEqualFieldInfo = "equal"
    type AttrOrigin AttrClassEqualFieldInfo = AttrClass
    attrGet = getAttrClassEqual
    attrSet = setAttrClassEqual
    attrConstruct = undefined
    attrClear = clearAttrClassEqual
    attrTransfer _ v = do
        Pango.Callbacks.mk_AttrClassEqualFieldCallback (Pango.Callbacks.wrap_AttrClassEqualFieldCallback Nothing v)
    dbgAttrInfo = P.Just (O.ResolvedSymbolInfo {
        O.resolvedSymbolName = "GI.Pango.Structs.AttrClass.equal"
        , O.resolvedSymbolURL = "https://hackage.haskell.org/package/gi-pango-1.0.27/docs/GI-Pango-Structs-AttrClass.html#g:attr:equal"
        })

attrClass_equal :: AttrLabelProxy "equal"
attrClass_equal = AttrLabelProxy

#endif



#if defined(ENABLE_OVERLOADING)
instance O.HasAttributeList AttrClass
type instance O.AttributeList AttrClass = AttrClassAttributeList
type AttrClassAttributeList = ('[ '("type", AttrClassTypeFieldInfo), '("copy", AttrClassCopyFieldInfo), '("destroy", AttrClassDestroyFieldInfo), '("equal", AttrClassEqualFieldInfo)] :: [(Symbol, DK.Type)])
#endif

#if defined(ENABLE_OVERLOADING)
type family ResolveAttrClassMethod (t :: Symbol) (o :: DK.Type) :: DK.Type where
    ResolveAttrClassMethod l o = O.MethodResolutionFailed l o

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

#if MIN_VERSION_base(4,13,0)
instance (info ~ ResolveAttrClassMethod t AttrClass, O.OverloadedMethod info AttrClass p, R.HasField t AttrClass p) => R.HasField t AttrClass p where
    getField = O.overloadedMethod @info

#endif

instance (info ~ ResolveAttrClassMethod t AttrClass, O.OverloadedMethodInfo info AttrClass) => OL.IsLabel t (O.MethodProxy info AttrClass) where
#if MIN_VERSION_base(4,10,0)
    fromLabel = O.MethodProxy
#else
    fromLabel _ = O.MethodProxy
#endif

#endif