Safe Haskell	None
Language	GHC2021

GHC.Core.PatSyn

Contents

Main data types
- Type deconstruction

Synopsis

data PatSyn
type PatSynMatcher = (Name, Type, Bool)
type PatSynBuilder = Maybe (Name, Type, Bool)
mkPatSyn :: Name -> Bool -> ([InvisTVBinder], ThetaType) -> ([InvisTVBinder], ThetaType) -> [FRRType] -> Type -> PatSynMatcher -> PatSynBuilder -> [FieldLabel] -> PatSyn
patSynName :: PatSyn -> Name
patSynArity :: PatSyn -> Arity
patSynIsInfix :: PatSyn -> Bool
patSynResultType :: PatSyn -> Type
isVanillaPatSyn :: PatSyn -> Bool
patSynArgs :: PatSyn -> [Type]
patSynMatcher :: PatSyn -> PatSynMatcher
patSynBuilder :: PatSyn -> PatSynBuilder
patSynUnivTyVarBinders :: PatSyn -> [InvisTVBinder]
patSynExTyVars :: PatSyn -> [TyVar]
patSynExTyVarBinders :: PatSyn -> [InvisTVBinder]
patSynSig :: PatSyn -> ([TyVar], ThetaType, [TyVar], ThetaType, [Scaled Type], Type)
patSynSigBndr :: PatSyn -> ([InvisTVBinder], ThetaType, [InvisTVBinder], ThetaType, [Scaled Type], Type)
patSynInstArgTys :: PatSyn -> [Type] -> [Type]
patSynInstResTy :: PatSyn -> [Type] -> Type
patSynFieldLabels :: PatSyn -> [FieldLabel]
patSynFieldType :: PatSyn -> FieldLabelString -> Type
pprPatSynType :: PatSyn -> SDoc

Main data types

data PatSyn Source #

Pattern Synonym

See Note [Pattern synonym representation] See Note [Pattern synonym signature contexts]

Instances

Instances details

NamedThing PatSyn Source #
Instance details Defined in GHC.Core.PatSyn Methods getOccName :: PatSyn -> OccName Source # getName :: PatSyn -> Name Source #
Uniquable PatSyn Source #
Instance details Defined in GHC.Core.PatSyn Methods getUnique :: PatSyn -> Unique Source #
Outputable PatSyn Source #
Instance details Defined in GHC.Core.PatSyn Methods ppr :: PatSyn -> SDoc Source #
OutputableBndr PatSyn Source #
Instance details Defined in GHC.Core.PatSyn Methods pprBndr :: BindingSite -> PatSyn -> SDoc Source # pprPrefixOcc :: PatSyn -> SDoc Source # pprInfixOcc :: PatSyn -> SDoc Source # bndrIsJoin_maybe :: PatSyn -> JoinPointHood Source #
Data PatSyn Source #
Instance details Defined in GHC.Core.PatSyn Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> PatSyn -> c PatSyn # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c PatSyn # toConstr :: PatSyn -> Constr # dataTypeOf :: PatSyn -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c PatSyn) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c PatSyn) # gmapT :: (forall b. Data b => b -> b) -> PatSyn -> PatSyn # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> PatSyn -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> PatSyn -> r # gmapQ :: (forall d. Data d => d -> u) -> PatSyn -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> PatSyn -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> PatSyn -> m PatSyn # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> PatSyn -> m PatSyn # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> PatSyn -> m PatSyn #
Eq PatSyn Source #
Instance details Defined in GHC.Core.PatSyn Methods (==) :: PatSyn -> PatSyn -> Bool # (/=) :: PatSyn -> PatSyn -> Bool #

type PatSynMatcher = (Name, Type, Bool) Source #

type PatSynBuilder = Maybe (Name, Type, Bool) Source #

mkPatSyn Source #

Arguments

:: Name
-> Bool	Is the pattern synonym declared infix?
-> ([InvisTVBinder], ThetaType)	Universally-quantified type variables and required dicts
-> ([InvisTVBinder], ThetaType)	Existentially-quantified type variables and provided dicts
-> [FRRType]	Original arguments
-> Type	Original result type
-> PatSynMatcher	Matcher
-> PatSynBuilder	Builder
-> [FieldLabel]	Names of fields for a record pattern synonym
-> PatSyn