Safe Haskell	Ignore
Language	GHC2021

GHC.Types.DefaultEnv

Synopsis

data ClassDefaults = ClassDefaults {
- cd_class :: Class
- cd_types :: [Type]
- cd_module :: Maybe Module
- cd_warn :: Maybe (WarningTxt GhcRn)
}
type DefaultEnv = NameEnv ClassDefaults
emptyDefaultEnv :: DefaultEnv
isEmptyDefaultEnv :: DefaultEnv -> Bool
defaultEnv :: [ClassDefaults] -> DefaultEnv
unitDefaultEnv :: ClassDefaults -> DefaultEnv
lookupDefaultEnv :: DefaultEnv -> Name -> Maybe ClassDefaults
filterDefaultEnv :: (ClassDefaults -> Bool) -> DefaultEnv -> DefaultEnv
defaultList :: DefaultEnv -> [ClassDefaults]
plusDefaultEnv :: DefaultEnv -> DefaultEnv -> DefaultEnv
mkDefaultEnv :: [(Name, ClassDefaults)] -> DefaultEnv

Documentation

data ClassDefaults Source #

Constructors

ClassDefaults
Fields cd_class :: Class The class whose defaults are being defined cd_types :: [Type] cd_module :: Maybe Module `Nothing` for built-in, `Just` the current module or the module whence the default was imported see Note [Default exports] in GHC.Tc.Gen.Export cd_warn :: Maybe (WarningTxt GhcRn) Warning emitted when the default is used

Instances

Instances details

Data ClassDefaults Source #
Instance details Defined in GHC.Types.DefaultEnv Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> ClassDefaults -> c ClassDefaults gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c ClassDefaults toConstr :: ClassDefaults -> Constr dataTypeOf :: ClassDefaults -> DataType dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c ClassDefaults) dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c ClassDefaults) gmapT :: (forall b. Data b => b -> b) -> ClassDefaults -> ClassDefaults gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> ClassDefaults -> r gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> ClassDefaults -> r gmapQ :: (forall d. Data d => d -> u) -> ClassDefaults -> [u] gmapQi :: Int -> (forall d. Data d => d -> u) -> ClassDefaults -> u gmapM :: Monad m => (forall d. Data d => d -> m d) -> ClassDefaults -> m ClassDefaults gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> ClassDefaults -> m ClassDefaults gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> ClassDefaults -> m ClassDefaults
Outputable ClassDefaults Source #
Instance details Defined in GHC.Types.DefaultEnv Methods ppr :: ClassDefaults -> SDoc Source #

type DefaultEnv = NameEnv ClassDefaults Source #

Default environment mapping class name Name to their default type lists

emptyDefaultEnv :: DefaultEnv Source #

isEmptyDefaultEnv :: DefaultEnv -> Bool Source #

defaultEnv :: [ClassDefaults] -> DefaultEnv Source #

unitDefaultEnv :: ClassDefaults -> DefaultEnv Source #

lookupDefaultEnv :: DefaultEnv -> Name -> Maybe ClassDefaults Source #

filterDefaultEnv :: (ClassDefaults -> Bool) -> DefaultEnv -> DefaultEnv Source #

defaultList :: DefaultEnv -> [ClassDefaults] Source #

plusDefaultEnv :: DefaultEnv -> DefaultEnv -> DefaultEnv Source #

mkDefaultEnv :: [(Name, ClassDefaults)] -> DefaultEnv Source #

Create a DefaultEnv from a list of (Name, ClassDefaults) pairs it is useful if we don't want to poke into the ClassDefaults structure to get the Name of the class, it can be problematic, see #25858