Safe Haskell	None
Language	Haskell2010

IfaceType

Synopsis

type IfExtName = Name
type IfLclName = FastString
data IfaceType
- = IfaceFreeTyVar TyVar
- | IfaceTyVar IfLclName
- | IfaceLitTy IfaceTyLit
- | IfaceAppTy IfaceType IfaceType
- | IfaceFunTy IfaceType IfaceType
- | IfaceDFunTy IfaceType IfaceType
- | IfaceForAllTy IfaceForAllBndr IfaceType
- | IfaceTyConApp IfaceTyCon IfaceTcArgs
- | IfaceCastTy IfaceType IfaceCoercion
- | IfaceCoercionTy IfaceCoercion
- | IfaceTupleTy TupleSort IsPromoted IfaceTcArgs
type IfacePredType = IfaceType
type IfaceKind = IfaceType
data IfaceCoercion
- = IfaceReflCo Role IfaceType
- | IfaceFunCo Role IfaceCoercion IfaceCoercion
- | IfaceTyConAppCo Role IfaceTyCon [IfaceCoercion]
- | IfaceAppCo IfaceCoercion IfaceCoercion
- | IfaceForAllCo IfaceTvBndr IfaceCoercion IfaceCoercion
- | IfaceCoVarCo IfLclName
- | IfaceAxiomInstCo IfExtName BranchIndex [IfaceCoercion]
- | IfaceUnivCo IfaceUnivCoProv Role IfaceType IfaceType
- | IfaceSymCo IfaceCoercion
- | IfaceTransCo IfaceCoercion IfaceCoercion
- | IfaceNthCo Int IfaceCoercion
- | IfaceLRCo LeftOrRight IfaceCoercion
- | IfaceInstCo IfaceCoercion IfaceCoercion
- | IfaceCoherenceCo IfaceCoercion IfaceCoercion
- | IfaceKindCo IfaceCoercion
- | IfaceSubCo IfaceCoercion
- | IfaceAxiomRuleCo IfLclName [IfaceCoercion]
- | IfaceFreeCoVar CoVar
- | IfaceHoleCo CoVar
data IfaceUnivCoProv
- = IfaceUnsafeCoerceProv
- | IfacePhantomProv IfaceCoercion
- | IfaceProofIrrelProv IfaceCoercion
- | IfacePluginProv String
data IfaceTyCon = IfaceTyCon {
- ifaceTyConName :: IfExtName
- ifaceTyConInfo :: IfaceTyConInfo
}
data IfaceTyConInfo = IfaceTyConInfo {
- ifaceTyConIsPromoted :: IsPromoted
- ifaceTyConSort :: IfaceTyConSort
}
data IfaceTyConSort
- = IfaceNormalTyCon
- | IfaceTupleTyCon !Arity !TupleSort
- | IfaceSumTyCon !Arity
- | IfaceEqualityTyCon
data IsPromoted
- = IsNotPromoted
- | IsPromoted
data IfaceTyLit
- = IfaceNumTyLit Integer
- | IfaceStrTyLit FastString
data IfaceTcArgs
- = ITC_Nil
- | ITC_Vis IfaceType IfaceTcArgs
- | ITC_Invis IfaceKind IfaceTcArgs
type IfaceContext = [IfacePredType]
data IfaceBndr
- = IfaceIdBndr !IfaceIdBndr
- | IfaceTvBndr !IfaceTvBndr
data IfaceOneShot
- = IfaceNoOneShot
- | IfaceOneShot
type IfaceLamBndr = (IfaceBndr, IfaceOneShot)
type IfaceTvBndr = (IfLclName, IfaceKind)
type IfaceIdBndr = (IfLclName, IfaceType)
type IfaceTyConBinder = TyVarBndr IfaceTvBndr TyConBndrVis
type IfaceForAllBndr = TyVarBndr IfaceTvBndr ArgFlag
data ArgFlag
- = Required
- | Specified
- | Inferred
data ShowForAllFlag
- = ShowForAllMust
- | ShowForAllWhen
ifForAllBndrTyVar :: IfaceForAllBndr -> IfaceTvBndr
ifForAllBndrName :: IfaceForAllBndr -> IfLclName
ifTyConBinderTyVar :: IfaceTyConBinder -> IfaceTvBndr
ifTyConBinderName :: IfaceTyConBinder -> IfLclName
isIfaceLiftedTypeKind :: IfaceKind -> Bool
tcArgsIfaceTypes :: IfaceTcArgs -> [IfaceType]
pprIfaceType :: IfaceType -> SDoc
pprParendIfaceType :: IfaceType -> SDoc
pprPrecIfaceType :: TyPrec -> IfaceType -> SDoc
pprIfaceContext :: TyPrec -> [IfacePredType] -> SDoc
pprIfaceContextArr :: [IfacePredType] -> SDoc
pprIfaceIdBndr :: IfaceIdBndr -> SDoc
pprIfaceLamBndr :: IfaceLamBndr -> SDoc
pprIfaceTvBndr :: Bool -> IfaceTvBndr -> SDoc
pprIfaceTyConBinders :: [IfaceTyConBinder] -> SDoc
pprIfaceBndrs :: [IfaceBndr] -> SDoc
pprIfaceTcArgs :: IfaceTcArgs -> SDoc
pprParendIfaceTcArgs :: IfaceTcArgs -> SDoc
pprIfaceForAllPart :: [IfaceForAllBndr] -> [IfacePredType] -> SDoc -> SDoc
pprIfaceForAllPartMust :: [IfaceForAllBndr] -> [IfacePredType] -> SDoc -> SDoc
pprIfaceForAll :: [IfaceForAllBndr] -> SDoc
pprIfaceSigmaType :: ShowForAllFlag -> IfaceType -> SDoc
pprIfaceTyLit :: IfaceTyLit -> SDoc
pprIfaceCoercion :: IfaceCoercion -> SDoc
pprParendIfaceCoercion :: IfaceCoercion -> SDoc
splitIfaceSigmaTy :: IfaceType -> ([IfaceForAllBndr], [IfacePredType], IfaceType)
pprIfaceTypeApp :: TyPrec -> IfaceTyCon -> IfaceTcArgs -> SDoc
pprUserIfaceForAll :: [IfaceForAllBndr] -> SDoc
pprIfaceCoTcApp :: TyPrec -> IfaceTyCon -> [IfaceCoercion] -> SDoc
pprTyTcApp :: TyPrec -> IfaceTyCon -> IfaceTcArgs -> SDoc
pprIfacePrefixApp :: TyPrec -> SDoc -> [SDoc] -> SDoc
suppressIfaceInvisibles :: DynFlags -> [IfaceTyConBinder] -> [a] -> [a]
stripIfaceInvisVars :: DynFlags -> [IfaceTyConBinder] -> [IfaceTyConBinder]
stripInvisArgs :: DynFlags -> IfaceTcArgs -> IfaceTcArgs
mkIfaceTySubst :: [(IfLclName, IfaceType)] -> IfaceTySubst
substIfaceTyVar :: IfaceTySubst -> IfLclName -> IfaceType
substIfaceTcArgs :: IfaceTySubst -> IfaceTcArgs -> IfaceTcArgs
inDomIfaceTySubst :: IfaceTySubst -> IfaceTvBndr -> Bool

Documentation

type IfExtName = Name Source #

type IfLclName = FastString Source #

data IfaceType Source #

Instances

Outputable IfaceType #
Instance details Defined in IfaceType Methods ppr :: IfaceType -> SDoc Source # pprPrec :: Rational -> IfaceType -> SDoc Source #
Binary IfaceType #
Instance details Defined in IfaceType Methods put_ :: BinHandle -> IfaceType -> IO () Source # put :: BinHandle -> IfaceType -> IO (Bin IfaceType) Source # get :: BinHandle -> IO IfaceType Source #
Binary (DefMethSpec IfaceType) #
Instance details Defined in IfaceType Methods put_ :: BinHandle -> DefMethSpec IfaceType -> IO () Source # put :: BinHandle -> DefMethSpec IfaceType -> IO (Bin (DefMethSpec IfaceType)) Source # get :: BinHandle -> IO (DefMethSpec IfaceType) Source #

type IfacePredType = IfaceType Source #

type IfaceKind = IfaceType Source #

data IfaceCoercion Source #

Instances

Outputable IfaceCoercion #
Instance details Defined in IfaceType Methods ppr :: IfaceCoercion -> SDoc Source # pprPrec :: Rational -> IfaceCoercion -> SDoc Source #
Binary IfaceCoercion #
Instance details Defined in IfaceType Methods put_ :: BinHandle -> IfaceCoercion -> IO () Source # put :: BinHandle -> IfaceCoercion -> IO (Bin IfaceCoercion) Source # get :: BinHandle -> IO IfaceCoercion Source #

data IfaceUnivCoProv Source #

Constructors

IfaceUnsafeCoerceProv
IfacePhantomProv IfaceCoercion
IfaceProofIrrelProv IfaceCoercion
IfacePluginProv String

Instances

Binary IfaceUnivCoProv #
Instance details Defined in IfaceType Methods put_ :: BinHandle -> IfaceUnivCoProv -> IO () Source # put :: BinHandle -> IfaceUnivCoProv -> IO (Bin IfaceUnivCoProv) Source # get :: BinHandle -> IO IfaceUnivCoProv Source #

data IfaceTyCon Source #

Constructors

IfaceTyCon
Fields ifaceTyConName :: IfExtName ifaceTyConInfo :: IfaceTyConInfo

Instances

Eq IfaceTyCon #
Instance details Defined in IfaceType Methods (==) :: IfaceTyCon -> IfaceTyCon -> Bool # (/=) :: IfaceTyCon -> IfaceTyCon -> Bool #
Outputable IfaceTyCon #
Instance details Defined in IfaceType Methods ppr :: IfaceTyCon -> SDoc Source # pprPrec :: Rational -> IfaceTyCon -> SDoc Source #
Binary IfaceTyCon #
Instance details Defined in IfaceType Methods put_ :: BinHandle -> IfaceTyCon -> IO () Source # put :: BinHandle -> IfaceTyCon -> IO (Bin IfaceTyCon) Source # get :: BinHandle -> IO IfaceTyCon Source #

data IfaceTyConInfo Source #

Constructors

IfaceTyConInfo
Fields ifaceTyConIsPromoted :: IsPromoted ifaceTyConSort :: IfaceTyConSort

Instances

Eq IfaceTyConInfo #
Instance details Defined in IfaceType Methods (==) :: IfaceTyConInfo -> IfaceTyConInfo -> Bool # (/=) :: IfaceTyConInfo -> IfaceTyConInfo -> Bool #
Binary IfaceTyConInfo #
Instance details Defined in IfaceType Methods put_ :: BinHandle -> IfaceTyConInfo -> IO () Source # put :: BinHandle -> IfaceTyConInfo -> IO (Bin IfaceTyConInfo) Source # get :: BinHandle -> IO IfaceTyConInfo Source #

data IfaceTyConSort Source #

The various types of TyCons which have special, built-in syntax.

Constructors

IfaceNormalTyCon	a regular tycon
IfaceTupleTyCon !Arity !TupleSort	e.g. `(a, b, c)` or `()`. The arity is the tuple width, not the tycon arity (which is twice the width in the case of unboxed tuples).
IfaceSumTyCon !Arity	e.g. `(a \| b \| c)`
IfaceEqualityTyCon	A heterogeneous equality TyCon (i.e. eqPrimTyCon, eqReprPrimTyCon, heqTyCon) that is actually being applied to two types of the same kind. This affects pretty-printing only: see Note [Equality predicates in IfaceType]

Instances

Eq IfaceTyConSort #
Instance details Defined in IfaceType Methods (==) :: IfaceTyConSort -> IfaceTyConSort -> Bool # (/=) :: IfaceTyConSort -> IfaceTyConSort -> Bool #
Binary IfaceTyConSort #
Instance details Defined in IfaceType Methods put_ :: BinHandle -> IfaceTyConSort -> IO () Source # put :: BinHandle -> IfaceTyConSort -> IO (Bin IfaceTyConSort) Source # get :: BinHandle -> IO IfaceTyConSort Source #

data IsPromoted Source #

Is a TyCon a promoted data constructor or just a normal type constructor?

Constructors

IsNotPromoted
IsPromoted

Instances

Eq IsPromoted #
Instance details Defined in IfaceType Methods (==) :: IsPromoted -> IsPromoted -> Bool # (/=) :: IsPromoted -> IsPromoted -> Bool #
Binary IsPromoted #
Instance details Defined in IfaceType Methods put_ :: BinHandle -> IsPromoted -> IO () Source # put :: BinHandle -> IsPromoted -> IO (Bin IsPromoted) Source # get :: BinHandle -> IO IsPromoted Source #

data IfaceTyLit Source #

Constructors

IfaceNumTyLit Integer
IfaceStrTyLit FastString

Instances

Eq IfaceTyLit #
Instance details Defined in IfaceType Methods (==) :: IfaceTyLit -> IfaceTyLit -> Bool # (/=) :: IfaceTyLit -> IfaceTyLit -> Bool #
Outputable IfaceTyLit #
Instance details Defined in IfaceType Methods ppr :: IfaceTyLit -> SDoc Source # pprPrec :: Rational -> IfaceTyLit -> SDoc Source #
Binary IfaceTyLit #
Instance details Defined in IfaceType Methods put_ :: BinHandle -> IfaceTyLit -> IO () Source # put :: BinHandle -> IfaceTyLit -> IO (Bin IfaceTyLit) Source # get :: BinHandle -> IO IfaceTyLit Source #

data IfaceTcArgs Source #

Constructors

ITC_Nil
ITC_Vis IfaceType IfaceTcArgs
ITC_Invis IfaceKind IfaceTcArgs

Instances

Semigroup IfaceTcArgs #
Instance details Defined in IfaceType Methods (<>) :: IfaceTcArgs -> IfaceTcArgs -> IfaceTcArgs Source # sconcat :: NonEmpty IfaceTcArgs -> IfaceTcArgs Source # stimes :: Integral b => b -> IfaceTcArgs -> IfaceTcArgs Source #
Monoid IfaceTcArgs #
Instance details Defined in IfaceType Methods mempty :: IfaceTcArgs Source # mappend :: IfaceTcArgs -> IfaceTcArgs -> IfaceTcArgs Source # mconcat :: [IfaceTcArgs] -> IfaceTcArgs Source #
Outputable IfaceTcArgs #
Instance details Defined in IfaceType Methods ppr :: IfaceTcArgs -> SDoc Source # pprPrec :: Rational -> IfaceTcArgs -> SDoc Source #
Binary IfaceTcArgs #
Instance details Defined in IfaceType Methods put_ :: BinHandle -> IfaceTcArgs -> IO () Source # put :: BinHandle -> IfaceTcArgs -> IO (Bin IfaceTcArgs) Source # get :: BinHandle -> IO IfaceTcArgs Source #

type IfaceContext = [IfacePredType] Source #

data IfaceBndr Source #

Constructors

IfaceIdBndr !IfaceIdBndr
IfaceTvBndr !IfaceTvBndr

Instances

Outputable IfaceBndr #
Instance details Defined in IfaceType Methods ppr :: IfaceBndr -> SDoc Source # pprPrec :: Rational -> IfaceBndr -> SDoc Source #
Binary IfaceBndr #
Instance details Defined in IfaceType Methods put_ :: BinHandle -> IfaceBndr -> IO () Source # put :: BinHandle -> IfaceBndr -> IO (Bin IfaceBndr) Source # get :: BinHandle -> IO IfaceBndr Source #

data IfaceOneShot Source #

Constructors

IfaceNoOneShot
IfaceOneShot

Instances

Binary IfaceOneShot #
Instance details Defined in IfaceType Methods put_ :: BinHandle -> IfaceOneShot -> IO () Source # put :: BinHandle -> IfaceOneShot -> IO (Bin IfaceOneShot) Source # get :: BinHandle -> IO IfaceOneShot Source #

type IfaceLamBndr = (IfaceBndr, IfaceOneShot) Source #

type IfaceTvBndr = (IfLclName, IfaceKind) Source #

type IfaceIdBndr = (IfLclName, IfaceType) Source #

type IfaceTyConBinder = TyVarBndr IfaceTvBndr TyConBndrVis Source #

type IfaceForAllBndr = TyVarBndr IfaceTvBndr ArgFlag Source #

data ArgFlag Source #

Argument Flag

Is something required to appear in source Haskell (Required), permitted by request (Specified) (visible type application), or prohibited entirely from appearing in source Haskell (Inferred)? See Note [TyVarBndrs, TyVarBinders, TyConBinders, and visibility] in TyCoRep

Constructors

Required
Specified
Inferred

Instances

Eq ArgFlag #
Instance details Defined in Var Methods (==) :: ArgFlag -> ArgFlag -> Bool # (/=) :: ArgFlag -> ArgFlag -> Bool #
Data ArgFlag #
Instance details Defined in Var Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> ArgFlag -> c ArgFlag Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c ArgFlag Source # toConstr :: ArgFlag -> Constr Source # dataTypeOf :: ArgFlag -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c ArgFlag) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c ArgFlag) Source # gmapT :: (forall b. Data b => b -> b) -> ArgFlag -> ArgFlag Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> ArgFlag -> r Source # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> ArgFlag -> r Source # gmapQ :: (forall d. Data d => d -> u) -> ArgFlag -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> ArgFlag -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> ArgFlag -> m ArgFlag Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> ArgFlag -> m ArgFlag Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> ArgFlag -> m ArgFlag Source #
Outputable ArgFlag #
Instance details Defined in Var Methods ppr :: ArgFlag -> SDoc Source # pprPrec :: Rational -> ArgFlag -> SDoc Source #
Binary ArgFlag #
Instance details Defined in Var Methods put_ :: BinHandle -> ArgFlag -> IO () Source # put :: BinHandle -> ArgFlag -> IO (Bin ArgFlag) Source # get :: BinHandle -> IO ArgFlag Source #
Outputable tv => Outputable (TyVarBndr tv ArgFlag) #
Instance details Defined in Var Methods ppr :: TyVarBndr tv ArgFlag -> SDoc Source # pprPrec :: Rational -> TyVarBndr tv ArgFlag -> SDoc Source #

data ShowForAllFlag Source #

Show forall flag

Unconditionally show the forall quantifier with (ShowForAllMust) or when (ShowForAllWhen) the names used are free in the binder or when compiling with -fprint-explicit-foralls.

Constructors

ShowForAllMust
ShowForAllWhen

ifForAllBndrTyVar :: IfaceForAllBndr -> IfaceTvBndr Source #

Extract an IfaceTvBndr from an IfaceForAllBndr.

ifForAllBndrName :: IfaceForAllBndr -> IfLclName Source #

Extract the variable name from an IfaceForAllBndr.

ifTyConBinderTyVar :: IfaceTyConBinder -> IfaceTvBndr Source #

Extract an IfaceTvBndr from an IfaceTyConBinder.

ifTyConBinderName :: IfaceTyConBinder -> IfLclName Source #

Extract the variable name from an IfaceTyConBinder.

isIfaceLiftedTypeKind :: IfaceKind -> Bool Source #

tcArgsIfaceTypes :: IfaceTcArgs -> [IfaceType] Source #

pprIfaceType :: IfaceType -> SDoc Source #

pprParendIfaceType :: IfaceType -> SDoc Source #

pprPrecIfaceType :: TyPrec -> IfaceType -> SDoc Source #

pprIfaceContext :: TyPrec -> [IfacePredType] -> SDoc Source #

Prints a context or () if empty You give it the context precedence

pprIfaceContextArr :: [IfacePredType] -> SDoc Source #

Prints "(C a, D b) =>", including the arrow. Used when we want to print a context in a type, so we use FunPrec to decide whether to parenthesise a singleton predicate; e.g. Num a => a -> a

pprIfaceIdBndr :: IfaceIdBndr -> SDoc Source #

pprIfaceLamBndr :: IfaceLamBndr -> SDoc Source #

pprIfaceTvBndr :: Bool -> IfaceTvBndr -> SDoc Source #

pprIfaceTyConBinders :: [IfaceTyConBinder] -> SDoc Source #

pprIfaceBndrs :: [IfaceBndr] -> SDoc Source #

pprIfaceTcArgs :: IfaceTcArgs -> SDoc Source #

pprParendIfaceTcArgs :: IfaceTcArgs -> SDoc Source #

pprIfaceForAllPart :: [IfaceForAllBndr] -> [IfacePredType] -> SDoc -> SDoc Source #

pprIfaceForAllPartMust :: [IfaceForAllBndr] -> [IfacePredType] -> SDoc -> SDoc Source #

Like pprIfaceForAllPart, but always uses an explicit forall.

pprIfaceForAll :: [IfaceForAllBndr] -> SDoc Source #

Render the "forall ... ." or "forall ... ->" bit of a type.

pprIfaceSigmaType :: ShowForAllFlag -> IfaceType -> SDoc Source #

pprIfaceTyLit :: IfaceTyLit -> SDoc Source #

pprIfaceCoercion :: IfaceCoercion -> SDoc Source #

pprParendIfaceCoercion :: IfaceCoercion -> SDoc Source #

splitIfaceSigmaTy :: IfaceType -> ([IfaceForAllBndr], [IfacePredType], IfaceType) Source #

pprIfaceTypeApp :: TyPrec -> IfaceTyCon -> IfaceTcArgs -> SDoc Source #

pprUserIfaceForAll :: [IfaceForAllBndr] -> SDoc Source #

pprIfaceCoTcApp :: TyPrec -> IfaceTyCon -> [IfaceCoercion] -> SDoc Source #

pprTyTcApp :: TyPrec -> IfaceTyCon -> IfaceTcArgs -> SDoc Source #

pprIfacePrefixApp :: TyPrec -> SDoc -> [SDoc] -> SDoc Source #

suppressIfaceInvisibles :: DynFlags -> [IfaceTyConBinder] -> [a] -> [a] Source #

stripIfaceInvisVars :: DynFlags -> [IfaceTyConBinder] -> [IfaceTyConBinder] Source #

stripInvisArgs :: DynFlags -> IfaceTcArgs -> IfaceTcArgs Source #

mkIfaceTySubst :: [(IfLclName, IfaceType)] -> IfaceTySubst Source #

substIfaceTyVar :: IfaceTySubst -> IfLclName -> IfaceType Source #

substIfaceTcArgs :: IfaceTySubst -> IfaceTcArgs -> IfaceTcArgs Source #

inDomIfaceTySubst :: IfaceTySubst -> IfaceTvBndr -> Bool Source #

IfaceFreeTyVar TyVar
IfaceTyVar IfLclName
IfaceLitTy IfaceTyLit
IfaceAppTy IfaceType IfaceType
IfaceFunTy IfaceType IfaceType
IfaceDFunTy IfaceType IfaceType
IfaceForAllTy IfaceForAllBndr IfaceType
IfaceTyConApp IfaceTyCon IfaceTcArgs
IfaceCastTy IfaceType IfaceCoercion
IfaceCoercionTy IfaceCoercion
IfaceTupleTy TupleSort IsPromoted IfaceTcArgs

IfaceReflCo Role IfaceType
IfaceFunCo Role IfaceCoercion IfaceCoercion
IfaceTyConAppCo Role IfaceTyCon [IfaceCoercion]
IfaceAppCo IfaceCoercion IfaceCoercion
IfaceForAllCo IfaceTvBndr IfaceCoercion IfaceCoercion
IfaceCoVarCo IfLclName
IfaceAxiomInstCo IfExtName BranchIndex [IfaceCoercion]
IfaceUnivCo IfaceUnivCoProv Role IfaceType IfaceType
IfaceSymCo IfaceCoercion
IfaceTransCo IfaceCoercion IfaceCoercion
IfaceNthCo Int IfaceCoercion
IfaceLRCo LeftOrRight IfaceCoercion
IfaceInstCo IfaceCoercion IfaceCoercion
IfaceCoherenceCo IfaceCoercion IfaceCoercion
IfaceKindCo IfaceCoercion
IfaceSubCo IfaceCoercion
IfaceAxiomRuleCo IfLclName [IfaceCoercion]
IfaceFreeCoVar CoVar
IfaceHoleCo CoVar	See Note [Holes in IfaceCoercion]