Safe Haskell	None
Language	GHC2021

GHC.Types.DefaultEnv

Synopsis

data ClassDefaults = ClassDefaults {
- cd_class :: Class
- cd_types :: [Type]
- cd_provenance :: DefaultProvenance
- cd_warn :: Maybe (WarningTxt GhcRn)
}
data DefaultProvenance
- = DP_Local {
  - defaultDeclLoc :: SrcSpan
  - defaultDeclH98 :: Bool
  }
- | DP_Builtin
- | DP_Imported Module
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
insertDefaultEnv :: ClassDefaults -> DefaultEnv -> DefaultEnv
isHaskell2010Default :: DefaultProvenance -> Bool

Documentation

data ClassDefaults Source #

Defaulting type assignments for the given class.

Constructors

ClassDefaults
Fields cd_class :: Class The class whose defaults are being defined cd_types :: [Type] cd_provenance :: DefaultProvenance Where the defaults came from see Note [Default exports] in GHC.Tc.Gen.Export cd_warn :: Maybe (WarningTxt GhcRn) Warning emitted when the default is used

Instances

Instances details

Outputable ClassDefaults Source #
Instance details Defined in GHC.Types.DefaultEnv Methods ppr :: ClassDefaults -> SDoc Source #
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 #

data DefaultProvenance Source #

The provenance of a collection of default types for a class. see Note [DefaultProvenance] for more details

Constructors

DP_Local	A locally defined default declaration.
Fields defaultDeclLoc :: SrcSpan The `SrcSpan` of the default declaration defaultDeclH98 :: Bool Is this a Haskell 98 default declaration?
DP_Builtin	Built-in class defaults.
DP_Imported	Imported class defaults.
Fields Module The module from which the defaults were imported

Instances

Instances details

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

type DefaultEnv = NameEnv ClassDefaults Source #

Default environment mapping class name Name to their default type lists

NB: this includes Haskell98 default declarations, at the Num key.

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

insertDefaultEnv :: ClassDefaults -> DefaultEnv -> DefaultEnv Source #

isHaskell2010Default :: DefaultProvenance -> Bool Source #