GHC.Core.PatSyn

Main data types

data PatSyn

Pattern Synonym

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

Instances

Data PatSyn

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

NamedThing PatSyn

Defined in GHC.Core.PatSyn

Methods

getOccName :: PatSyn -> OccName

getName :: PatSyn -> Name

Uniquable PatSyn

Defined in GHC.Core.PatSyn

Methods

getUnique :: PatSyn -> Unique

Outputable PatSyn

Defined in GHC.Core.PatSyn

Methods

ppr :: PatSyn -> SDoc

OutputableBndr PatSyn

Defined in GHC.Core.PatSyn

Methods

pprBndr :: BindingSite -> PatSyn -> SDoc

pprPrefixOcc :: PatSyn -> SDoc

pprInfixOcc :: PatSyn -> SDoc

bndrIsJoin_maybe :: PatSyn -> Maybe Int

Eq PatSyn

Defined in GHC.Core.PatSyn

Methods

(==) :: PatSyn -> PatSyn -> Bool

(/=) :: PatSyn -> PatSyn -> Bool

type PatSynMatcher = (Name, Type, Bool)

type PatSynBuilder = Maybe (Name, Type, Bool)

mkPatSyn

Arguments

:: Name

-> Bool

Is the pattern synonym declared infix?

-> ([InvisTVBinder], ThetaType)

Universially-quantified type variables and required dicts

-> ([InvisTVBinder], ThetaType)

Existentially-quantified type variables and provided dicts

-> [Type]

Original arguments

-> Type

Original result type

-> PatSynMatcher

Matcher

-> PatSynBuilder

Builder

-> [FieldLabel]

Names of fields for a record pattern synonym

-> PatSyn

Build a new pattern synonym

Type deconstruction

patSynName :: PatSyn -> Name

The Name of the PatSyn, giving it a unique, rooted identification

patSynArity :: PatSyn -> Arity

Arity of the pattern synonym

patSynIsInfix :: PatSyn -> Bool

Should the PatSyn be presented infix?

patSynResultType :: PatSyn -> Type

isVanillaPatSyn :: PatSyn -> Bool

Is this a 'vanilla' pattern synonym (no existentials, no provided constraints)?

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

Extract the type for any given labelled field of the DataCon

pprPatSynType :: PatSyn -> SDoc

Print the type of a pattern synonym. The foralls are printed explicitly