ghc-lib-parser-9.12.2.20250421: The GHC API, decoupled from GHC versions

Safe Haskell | Ignore
Language | GHC2021

GHC.Core.Class

Synopsis

- data Class
- type ClassOpItem = (Id, DefMethInfo)
- data ClassATItem = ATI TyCon (Maybe (Type, TyFamEqnValidityInfo))
- data TyFamEqnValidityInfo
  - = NoVI
  - | VI {
    - vi_loc :: SrcSpan
    - vi_qtvs :: [TcTyVar]
    - vi_non_user_tvs :: TyVarSet
    - vi_pats :: [Type]
    - vi_rhs :: Type
    }
- type ClassMinimalDef = BooleanFormula Name
- type DefMethInfo = Maybe (Name, DefMethSpec Type)
- pprDefMethInfo :: DefMethInfo -> SDoc
- type FunDep a = ([a], [a])
- pprFundeps :: Outputable a => [FunDep a] -> SDoc
- pprFunDep :: Outputable a => FunDep a -> SDoc
- mkClass :: Name -> [TyVar] -> [FunDep TyVar] -> [PredType] -> [Id] -> [ClassATItem] -> [ClassOpItem] -> ClassMinimalDef -> TyCon -> Class
- mkAbstractClass :: Name -> [TyVar] -> [FunDep TyVar] -> TyCon -> Class
- classTyVars :: Class -> [TyVar]
- classArity :: Class -> Arity
- classKey :: Class -> Unique
- className :: Class -> Name
- classATs :: Class -> [TyCon]
- classATItems :: Class -> [ClassATItem]
- classTyCon :: Class -> TyCon
- classMethods :: Class -> [Id]
- classOpItems :: Class -> [ClassOpItem]
- classBigSig :: Class -> ([TyVar], [PredType], [Id], [ClassOpItem])
- classExtraBigSig :: Class -> ([TyVar], [FunDep TyVar], [PredType], [Id], [ClassATItem], [ClassOpItem])
- classTvsFds :: Class -> ([TyVar], [FunDep TyVar])
- classSCTheta :: Class -> [PredType]
- classHasSCs :: Class -> Bool
- classAllSelIds :: Class -> [Id]
- classSCSelId :: Class -> Int -> Id
- classSCSelIds :: Class -> [Id]
- classMinimalDef :: Class -> ClassMinimalDef
- classHasFds :: Class -> Bool
- isAbstractClass :: Class -> Bool

# Documentation

data Class Source #

#### Instances

Instances details

Data Class Source # |

Instance details

Defined in GHC.Core.Class

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Class -> c Class Source #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Class Source #

toConstr :: Class -> Constr Source #

dataTypeOf :: Class -> DataType Source #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Class) Source #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Class) Source #

gmapT :: (forall b. Data b => b -> b) -> Class -> Class Source #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Class -> r Source #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Class -> r Source #

gmapQ :: (forall d. Data d => d -> u) -> Class -> [u] Source #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Class -> u Source #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Class -> m Class Source #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Class -> m Class Source #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Class -> m Class Source #

NamedThing Class Source # |
Instance details Defined in GHC.Core.Class Methods getOccName :: Class -> OccName Source # getName :: Class -> Name Source #
Uniquable Class Source # |
Instance details Defined in GHC.Core.Class Methods getUnique :: Class -> Unique Source #
Outputable Class Source # |
Instance details Defined in GHC.Core.Class Methods ppr :: Class -> SDoc Source #
Eq Class Source # |
Instance details Defined in GHC.Core.Class Methods (==) :: Class -> Class -> Bool Source # (/=) :: Class -> Class -> Bool Source #

type ClassOpItem = (Id, DefMethInfo) Source #

data ClassATItem Source #

Constructors

ATI TyCon (Maybe (Type, TyFamEqnValidityInfo)) | Default associated type (if any) from this template. As per Note [Associated type defaults], the Type has been renamed to use the class tyvars, while the `TyFamEqnValidityInfo` uses the original user-written type variables.

data TyFamEqnValidityInfo Source #

Information about a type family equation, used for validity checking of closed type family equations and associated type family default equations.

This type exists to delay validity-checking after typechecking type declaration groups, to avoid cyclic evaluation inside the typechecking knot.

See `Note [Type-checking default assoc decls]` in GHC.Tc.TyCl.

Constructors

NoVI | Used for equations which don't need any validity checking, for example equations imported from another module.
VI | Information necessary for validity checking of a type family equation.

Fields

- vi_loc :: SrcSpan
- vi_qtvs :: [TcTyVar]

  LHS quantified type variables

- vi_non_user_tvs :: TyVarSet

  non-user-written type variables (for error message reporting)

  Example: with -XPolyKinds, typechecking `type instance forall a. F = ()` introduces the kind variable `k` for the kind of `a`. See #23734.

- vi_pats :: [Type]

  LHS patterns

- vi_rhs :: Type

  RHS of the equation

  NB: for associated type family default declarations, this is the RHS *before* applying the substitution from Note [Type-checking default assoc decls] in GHC.Tc.TyCl.

type ClassMinimalDef = BooleanFormula Name Source #

type DefMethInfo = Maybe (Name, DefMethSpec Type) Source #

pprDefMethInfo :: DefMethInfo -> SDoc Source #

type FunDep a = ([a], [a]) Source #

pprFundeps :: Outputable a => [FunDep a] -> SDoc Source #

pprFunDep :: Outputable a => FunDep a -> SDoc Source #

mkClass :: Name -> [TyVar] -> [FunDep TyVar] -> [PredType] -> [Id] -> [ClassATItem] -> [ClassOpItem] -> ClassMinimalDef -> TyCon -> Class Source #

mkAbstractClass :: Name -> [TyVar] -> [FunDep TyVar] -> TyCon -> Class Source #

classTyVars :: Class -> [TyVar] Source #

classArity :: Class -> Arity Source #

classKey :: Class -> Unique Source #

className :: Class -> Name Source #

classATs :: Class -> [TyCon] Source #

classATItems :: Class -> [ClassATItem] Source #

classTyCon :: Class -> TyCon Source #

classMethods :: Class -> [Id] Source #

classOpItems :: Class -> [ClassOpItem] Source #

classBigSig :: Class -> ([TyVar], [PredType], [Id], [ClassOpItem]) Source #

classExtraBigSig :: Class -> ([TyVar], [FunDep TyVar], [PredType], [Id], [ClassATItem], [ClassOpItem]) Source #

classTvsFds :: Class -> ([TyVar], [FunDep TyVar]) Source #

classSCTheta :: Class -> [PredType] Source #

classHasSCs :: Class -> Bool Source #

classAllSelIds :: Class -> [Id] Source #

classSCSelId :: Class -> Int -> Id Source #

classSCSelIds :: Class -> [Id] Source #

classMinimalDef :: Class -> ClassMinimalDef Source #

classHasFds :: Class -> Bool Source #

isAbstractClass :: Class -> Bool Source #