Safe Haskell | None |
---|---|
Language | Haskell2010 |
TcMType
- type TcTyVar = TyVar
- type TcKind = Kind
- type TcType = Type
- type TcTauType = TcType
- type TcThetaType = ThetaType
- type TcTyVarSet = TyVarSet
- newFlexiTyVar :: Kind -> TcM TcTyVar
- newFlexiTyVarTy :: Kind -> TcM TcType
- newFlexiTyVarTys :: Int -> Kind -> TcM [TcType]
- newOpenFlexiTyVarTy :: TcM TcType
- newMetaKindVar :: TcM TcKind
- newMetaKindVars :: Int -> TcM [TcKind]
- cloneMetaTyVar :: TcTyVar -> TcM TcTyVar
- newFmvTyVar :: TcType -> TcM TcTyVar
- newFskTyVar :: TcType -> TcM TcTyVar
- readMetaTyVar :: TyVar -> TcM MetaDetails
- writeMetaTyVar :: TcTyVar -> TcType -> TcM ()
- writeMetaTyVarRef :: TcTyVar -> TcRef MetaDetails -> TcType -> TcM ()
- newMetaDetails :: MetaInfo -> TcM TcTyVarDetails
- isFilledMetaTyVar :: TyVar -> TcM Bool
- isUnfilledMetaTyVar :: TyVar -> TcM Bool
- data ExpType
- type ExpSigmaType = ExpType
- type ExpRhoType = ExpType
- mkCheckExpType :: TcType -> ExpType
- newOpenInferExpType :: TcM ExpType
- readExpType :: ExpType -> TcM TcType
- readExpType_maybe :: ExpType -> TcM (Maybe TcType)
- writeExpType :: ExpType -> TcType -> TcM ()
- expTypeToType :: ExpType -> TcM TcType
- checkingExpType_maybe :: ExpType -> Maybe TcType
- checkingExpType :: String -> ExpType -> TcType
- genInstSkolTyVarsX :: SrcSpan -> TCvSubst -> [TyVar] -> TcRnIf gbl lcl (TCvSubst, [TcTyVar])
- newEvVar :: TcPredType -> TcRnIf gbl lcl EvVar
- newEvVars :: TcThetaType -> TcM [EvVar]
- newDict :: Class -> [TcType] -> TcM DictId
- newWanted :: CtOrigin -> Maybe TypeOrKind -> PredType -> TcM CtEvidence
- newWanteds :: CtOrigin -> ThetaType -> TcM [CtEvidence]
- emitWanted :: CtOrigin -> TcPredType -> TcM EvTerm
- emitWantedEq :: CtOrigin -> TypeOrKind -> Role -> TcType -> TcType -> TcM Coercion
- emitWantedEvVar :: CtOrigin -> TcPredType -> TcM EvVar
- emitWantedEvVars :: CtOrigin -> [TcPredType] -> TcM [EvVar]
- newTcEvBinds :: TcM EvBindsVar
- addTcEvBind :: EvBindsVar -> EvBind -> TcM ()
- newCoercionHole :: TcM CoercionHole
- fillCoercionHole :: CoercionHole -> Coercion -> TcM ()
- isFilledCoercionHole :: CoercionHole -> TcM Bool
- unpackCoercionHole :: CoercionHole -> TcM Coercion
- unpackCoercionHole_maybe :: CoercionHole -> TcM (Maybe Coercion)
- checkCoercionHole :: Coercion -> CoercionHole -> Role -> Type -> Type -> TcM Coercion
- newMetaTyVars :: [TyVar] -> TcM (TCvSubst, [TcTyVar])
- newMetaTyVarX :: TCvSubst -> TyVar -> TcM (TCvSubst, TcTyVar)
- newMetaSigTyVars :: [TyVar] -> TcM (TCvSubst, [TcTyVar])
- newSigTyVar :: Name -> Kind -> TcM TcTyVar
- tcInstType :: ([TyVar] -> TcM (TCvSubst, [TcTyVar])) -> TcType -> TcM ([TcTyVar], TcThetaType, TcType)
- tcInstSkolTyVars :: [TyVar] -> TcM (TCvSubst, [TcTyVar])
- tcInstSkolTyVarsLoc :: SrcSpan -> [TyVar] -> TcRnIf gbl lcl (TCvSubst, [TcTyVar])
- tcInstSuperSkolTyVarsX :: TCvSubst -> [TyVar] -> TcM (TCvSubst, [TcTyVar])
- tcInstSigTyVarsLoc :: SrcSpan -> [TyVar] -> TcRnIf gbl lcl (TCvSubst, [TcTyVar])
- tcInstSigTyVars :: [TyVar] -> TcRnIf gbl lcl (TCvSubst, [TcTyVar])
- tcInstSkolType :: TcType -> TcM ([TcTyVar], TcThetaType, TcType)
- tcSkolDFunType :: Type -> TcM ([TcTyVar], TcThetaType, TcType)
- tcSuperSkolTyVars :: [TyVar] -> (TCvSubst, [TcTyVar])
- instSkolTyCoVars :: (Unique -> Name -> Kind -> TyCoVar) -> [TyVar] -> TcRnIf gbl lcl (TCvSubst, [TyCoVar])
- freshenTyVarBndrs :: [TyVar] -> TcRnIf gbl lcl (TCvSubst, [TyVar])
- freshenCoVarBndrsX :: TCvSubst -> [CoVar] -> TcRnIf gbl lcl (TCvSubst, [CoVar])
- zonkTidyTcType :: TidyEnv -> TcType -> TcM (TidyEnv, TcType)
- zonkTidyOrigin :: TidyEnv -> CtOrigin -> TcM (TidyEnv, CtOrigin)
- mkTypeErrorThing :: TcType -> ErrorThing
- mkTypeErrorThingArgs :: TcType -> Int -> ErrorThing
- tidyEvVar :: TidyEnv -> EvVar -> EvVar
- tidyCt :: TidyEnv -> Ct -> Ct
- tidySkolemInfo :: TidyEnv -> SkolemInfo -> SkolemInfo
- skolemiseUnboundMetaTyVar :: TcTyVar -> TcTyVarDetails -> TcM TyVar
- zonkTcTyVar :: TcTyVar -> TcM TcType
- zonkTcTyVars :: [TcTyVar] -> TcM [TcType]
- zonkTyCoVarsAndFV :: TyCoVarSet -> TcM TyCoVarSet
- zonkTcTypeAndFV :: TcType -> TcM TyCoVarSet
- zonkQuantifiedTyVar :: TcTyVar -> TcM (Maybe TcTyVar)
- zonkQuantifiedTyVarOrType :: TcTyVar -> TcM (Either TcTyVar TcType)
- quantifyTyVars :: TcTyCoVarSet -> Pair TcTyCoVarSet -> TcM [TcTyVar]
- defaultKindVar :: TcTyVar -> TcM Kind
- zonkTcTyCoVarBndr :: TcTyCoVar -> TcM TcTyCoVar
- zonkTcType :: TcType -> TcM TcType
- zonkTcTypes :: [TcType] -> TcM [TcType]
- zonkCo :: Coercion -> TcM Coercion
- zonkTyCoVarKind :: TyCoVar -> TcM TyCoVar
- zonkTcTypeMapper :: TyCoMapper () TcM
- zonkEvVar :: EvVar -> TcM EvVar
- zonkWC :: WantedConstraints -> TcM WantedConstraints
- zonkSimples :: Cts -> TcM Cts
- zonkId :: TcId -> TcM TcId
- zonkCt :: Ct -> TcM Ct
- zonkSkolemInfo :: SkolemInfo -> TcM SkolemInfo
- tcGetGlobalTyCoVars :: TcM TcTyVarSet
Documentation
type TcThetaType = ThetaType
type TcTyVarSet = TyVarSet
newFlexiTyVar :: Kind -> TcM TcTyVar
newFlexiTyVarTy :: Kind -> TcM TcType
newFlexiTyVarTys :: Int -> Kind -> TcM [TcType]
newOpenFlexiTyVarTy :: TcM TcType
Create a tyvar that can be a lifted or unlifted type.
newMetaKindVars :: Int -> TcM [TcKind]
cloneMetaTyVar :: TcTyVar -> TcM TcTyVar
newFmvTyVar :: TcType -> TcM TcTyVar
newFskTyVar :: TcType -> TcM TcTyVar
readMetaTyVar :: TyVar -> TcM MetaDetails
writeMetaTyVar :: TcTyVar -> TcType -> TcM ()
writeMetaTyVarRef :: TcTyVar -> TcRef MetaDetails -> TcType -> TcM ()
isFilledMetaTyVar :: TyVar -> TcM Bool
isUnfilledMetaTyVar :: TyVar -> TcM Bool
data ExpType
An expected type to check against during type-checking. See Note [ExpType] in TcMType, where you'll also find manipulators.
Instances
type ExpSigmaType = ExpType
type ExpRhoType = ExpType
mkCheckExpType :: TcType -> ExpType
Make an ExpType
suitable for checking.
newOpenInferExpType :: TcM ExpType
Make an ExpType
suitable for inferring a type of kind * or #.
readExpType :: ExpType -> TcM TcType
Extract a type out of an ExpType. Otherwise, panics.
readExpType_maybe :: ExpType -> TcM (Maybe TcType)
Extract a type out of an ExpType, if one exists. But one should always exist. Unless you're quite sure you know what you're doing.
expTypeToType :: ExpType -> TcM TcType
Extracts the expected type if there is one, or generates a new TauTv if there isn't.
checkingExpType_maybe :: ExpType -> Maybe TcType
Returns the expected type when in checking mode.
checkingExpType :: String -> ExpType -> TcType
Returns the expected type when in checking mode. Panics if in inference mode.
newEvVar :: TcPredType -> TcRnIf gbl lcl EvVar
newEvVars :: TcThetaType -> TcM [EvVar]
newWanted :: CtOrigin -> Maybe TypeOrKind -> PredType -> TcM CtEvidence
newWanteds :: CtOrigin -> ThetaType -> TcM [CtEvidence]
emitWanted :: CtOrigin -> TcPredType -> TcM EvTerm
Emits a new Wanted. Deals with both equalities and non-equalities.
emitWantedEq :: CtOrigin -> TypeOrKind -> Role -> TcType -> TcType -> TcM Coercion
Emits a new equality constraint
emitWantedEvVar :: CtOrigin -> TcPredType -> TcM EvVar
Creates a new EvVar and immediately emits it as a Wanted. No equality predicates here.
emitWantedEvVars :: CtOrigin -> [TcPredType] -> TcM [EvVar]
addTcEvBind :: EvBindsVar -> EvBind -> TcM ()
fillCoercionHole :: CoercionHole -> Coercion -> TcM ()
Put a value in a coercion hole
isFilledCoercionHole :: CoercionHole -> TcM Bool
Is a coercion hole filled in?
unpackCoercionHole :: CoercionHole -> TcM Coercion
Retrieve the contents of a coercion hole. Panics if the hole is unfilled
unpackCoercionHole_maybe :: CoercionHole -> TcM (Maybe Coercion)
Retrieve the contents of a coercion hole, if it is filled
checkCoercionHole :: Coercion -> CoercionHole -> Role -> Type -> Type -> TcM Coercion
Check that a coercion is appropriate for filling a hole. (The hole itself is needed only for printing. NB: This must be lazy in the coercion, as it's used in TcHsSyn in the presence of knots. Always returns the checked coercion, but this return value is necessary so that the input coercion is forced only when the output is forced.
newMetaTyVars :: [TyVar] -> TcM (TCvSubst, [TcTyVar])
newMetaSigTyVars :: [TyVar] -> TcM (TCvSubst, [TcTyVar])
newSigTyVar :: Name -> Kind -> TcM TcTyVar
tcInstSkolTyVars :: [TyVar] -> TcM (TCvSubst, [TcTyVar])
tcInstSigTyVars :: [TyVar] -> TcRnIf gbl lcl (TCvSubst, [TcTyVar])
tcInstSkolType :: TcType -> TcM ([TcTyVar], TcThetaType, TcType)
tcSkolDFunType :: Type -> TcM ([TcTyVar], TcThetaType, TcType)
tcSuperSkolTyVars :: [TyVar] -> (TCvSubst, [TcTyVar])
instSkolTyCoVars :: (Unique -> Name -> Kind -> TyCoVar) -> [TyVar] -> TcRnIf gbl lcl (TCvSubst, [TyCoVar])
freshenTyVarBndrs :: [TyVar] -> TcRnIf gbl lcl (TCvSubst, [TyVar])
Give fresh uniques to a bunch of TyVars, but they stay as TyVars, rather than becoming TcTyVars Used in FamInst.newFamInst, and Inst.newClsInst
freshenCoVarBndrsX :: TCvSubst -> [CoVar] -> TcRnIf gbl lcl (TCvSubst, [CoVar])
Give fresh uniques to a bunch of CoVars Used in FamInst.newFamInst
mkTypeErrorThing :: TcType -> ErrorThing
Make an ErrorThing
storing a type.
mkTypeErrorThingArgs :: TcType -> Int -> ErrorThing
Make an ErrorThing
storing a type, with some extra args known about
tidySkolemInfo :: TidyEnv -> SkolemInfo -> SkolemInfo
zonkTcTyVar :: TcTyVar -> TcM TcType
zonkTcTyVars :: [TcTyVar] -> TcM [TcType]
zonkTcTypeAndFV :: TcType -> TcM TyCoVarSet
zonkQuantifiedTyVar :: TcTyVar -> TcM (Maybe TcTyVar)
zonkQuantifiedTyVarOrType :: TcTyVar -> TcM (Either TcTyVar TcType)
Like zonkQuantifiedTyVar, but if zonking reveals that the tyvar should become a type (when defaulting a levity var to Lifted), it returns the type instead.
quantifyTyVars :: TcTyCoVarSet -> Pair TcTyCoVarSet -> TcM [TcTyVar]
defaultKindVar :: TcTyVar -> TcM Kind
Take an (unconstrained) meta tyvar and default it. Works only for kind vars (of type BOX) and levity vars (of type Levity).
zonkTcType :: TcType -> TcM TcType
zonkTcTypes :: [TcType] -> TcM [TcType]
zonkTyCoVarKind :: TyCoVar -> TcM TyCoVar
zonkTcTypeMapper :: TyCoMapper () TcM
A suitable TyCoMapper for zonking a type inside the knot, and before all metavars are filled in.
zonkSimples :: Cts -> TcM Cts
tcGetGlobalTyCoVars :: TcM TcTyVarSet
tcGetGlobalTyCoVars
returns a fully-zonked set of *scoped* tyvars free in
the environment. To improve subsequent calls to the same function it writes
the zonked set back into the environment. Note that this returns all
variables free in anything (term-level or type-level) in scope. We thus
don't have to worry about clashes with things that are not in scope, because
if they are reachable, then they'll be returned here.