ghc-9.13: The GHC API
Safe HaskellNone
LanguageGHC2021

GHC.Core.TyCo.Rep

Synopsis

Types

data Type Source #

Constructors

TyVarTy Var

Vanilla type or kind variable (*never* a coercion variable)

AppTy Type Type

Type application to something other than a TyCon. Parameters:

1) Function: must not be a TyConApp or CastTy, must be another AppTy, or TyVarTy See Note [Respecting definitional equality] (EQ1) about the no CastTy requirement

2) Argument type

TyConApp TyCon [KindOrType]

Application of a TyCon, including newtypes and synonyms. Invariant: saturated applications of FunTyCon must use FunTy and saturated synonyms must use their own constructors. However, unsaturated FunTyCons do appear as TyConApps. Parameters:

1) Type constructor being applied to.

2) Type arguments. Might not have enough type arguments here to saturate the constructor. Even type synonyms are not necessarily saturated; for example unsaturated type synonyms can appear as the right hand side of a type synonym.

ForAllTy !ForAllTyBinder Type

A Π type. See Note [Why ForAllTy can quantify over a coercion variable] INVARIANT: If the binder is a coercion variable, it must be mentioned in the Type. See Note [Unused coercion variable in ForAllTy]

FunTy

FUN m t1 t2 Very common, so an important special case See Note [Function types]

Fields

LitTy TyLit

Type literals are similar to type constructors.

CastTy Type KindCoercion

A kind cast. The coercion is always nominal. INVARIANT: The cast is never reflexive (EQ2) INVARIANT: The Type is not a CastTy (use TransCo instead) (EQ3) INVARIANT: The Type is not a ForAllTy over a tyvar (EQ4) See Note [Respecting definitional equality]

CoercionTy Coercion

Injection of a Coercion into a type This should only ever be used in the RHS of an AppTy, in the list of a TyConApp, when applying a promoted GADT data constructor

Instances

Instances details
Outputable Type Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

ppr :: Type -> SDoc Source #

Data Type Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

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

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

toConstr :: Type -> Constr #

dataTypeOf :: Type -> DataType #

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

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

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

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

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

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

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

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

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

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

Eq (DeBruijn Type) Source # 
Instance details

Defined in GHC.Core.Map.Type

data TyLit Source #

Instances

Instances details
Outputable TyLit Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

ppr :: TyLit -> SDoc Source #

Data TyLit Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

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

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

toConstr :: TyLit -> Constr #

dataTypeOf :: TyLit -> DataType #

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

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

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

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

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

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

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

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

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

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

Eq TyLit Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

(==) :: TyLit -> TyLit -> Bool #

(/=) :: TyLit -> TyLit -> Bool #

type KindOrType = Type Source #

The key representation of types within the compiler

type Kind = Type Source #

The key type representing kinds in the compiler.

type RuntimeRepType = Type Source #

Type synonym used for types of kind RuntimeRep.

type LevityType = Type Source #

Type synonym used for types of kind Levity.

type KnotTied (ty :: k) = ty Source #

A type labeled KnotTied might have knot-tied tycons in it. See Note [Type checking recursive type and class declarations] in GHC.Tc.TyCl

type PredType = Type Source #

A type of the form p of constraint kind represents a value whose type is the Haskell predicate p, where a predicate is what occurs before the => in a Haskell type.

We use PredType as documentation to mark those types that we guarantee to have this kind.

It can be expanded into its representation, but:

  • The type checker must treat it as opaque
  • The rest of the compiler treats it as transparent

Consider these examples:

f :: (Eq a) => a -> Int
g :: (?x :: Int -> Int) => a -> Int
h :: (r\l) => {r} => {l::Int | r}

Here the Eq a and ?x :: Int -> Int and rl are all called "predicates"

type ThetaType = [PredType] Source #

A collection of PredTypes

data ForAllTyFlag Source #

ForAllTyFlag

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 [VarBndrs, ForAllTyBinders, TyConBinders, and visibility] in GHC.Core.TyCo.Rep

Bundled Patterns

pattern Inferred :: ForAllTyFlag 
pattern Specified :: ForAllTyFlag 

Instances

Instances details
NFData ForAllTyFlag Source # 
Instance details

Defined in GHC.Hs.Specificity

Methods

rnf :: ForAllTyFlag -> () Source #

Binary ForAllTyFlag Source # 
Instance details

Defined in GHC.Hs.Specificity

Outputable ForAllTyFlag Source # 
Instance details

Defined in GHC.Hs.Specificity

Data ForAllTyFlag Source # 
Instance details

Defined in Language.Haskell.Syntax.Specificity

Methods

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

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

toConstr :: ForAllTyFlag -> Constr #

dataTypeOf :: ForAllTyFlag -> DataType #

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

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

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

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

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

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

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

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

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

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

Eq ForAllTyFlag Source # 
Instance details

Defined in Language.Haskell.Syntax.Specificity

Ord ForAllTyFlag Source # 
Instance details

Defined in Language.Haskell.Syntax.Specificity

Outputable tv => Outputable (VarBndr tv ForAllTyFlag) Source # 
Instance details

Defined in GHC.Types.Var

data FunTyFlag Source #

The non-dependent version of ForAllTyFlag. See Note [FunTyFlag] Appears here partly so that it's together with its friends ForAllTyFlag and ForallVisFlag, but also because it is used in IfaceType, rather early in the compilation chain

Constructors

FTF_T_T 
FTF_T_C 
FTF_C_T 
FTF_C_C 

Instances

Instances details
Binary FunTyFlag Source # 
Instance details

Defined in GHC.Types.Var

Outputable FunTyFlag Source # 
Instance details

Defined in GHC.Types.Var

Methods

ppr :: FunTyFlag -> SDoc Source #

Data FunTyFlag Source # 
Instance details

Defined in GHC.Types.Var

Methods

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

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

toConstr :: FunTyFlag -> Constr #

dataTypeOf :: FunTyFlag -> DataType #

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

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

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

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

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

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

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

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

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

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

Eq FunTyFlag Source # 
Instance details

Defined in GHC.Types.Var

Ord FunTyFlag Source # 
Instance details

Defined in GHC.Types.Var

Coercions

data Coercion Source #

A Coercion is concrete evidence of the equality/convertibility of two types.

Instances

Instances details
Outputable Coercion Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

ppr :: Coercion -> SDoc Source #

Data Coercion Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

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

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

toConstr :: Coercion -> Constr #

dataTypeOf :: Coercion -> DataType #

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

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

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

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

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

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

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

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

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

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

Eq (DeBruijn Coercion) Source # 
Instance details

Defined in GHC.Core.Map.Type

data CoSel Source #

Instances

Instances details
NFData CoSel Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

rnf :: CoSel -> () Source #

Binary CoSel Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Outputable CoSel Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

ppr :: CoSel -> SDoc Source #

Data CoSel Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

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

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

toConstr :: CoSel -> Constr #

dataTypeOf :: CoSel -> DataType #

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

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

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

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

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

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

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

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

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

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

Eq CoSel Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

(==) :: CoSel -> CoSel -> Bool #

(/=) :: CoSel -> CoSel -> Bool #

Ord CoSel Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

compare :: CoSel -> CoSel -> Ordering #

(<) :: CoSel -> CoSel -> Bool #

(<=) :: CoSel -> CoSel -> Bool #

(>) :: CoSel -> CoSel -> Bool #

(>=) :: CoSel -> CoSel -> Bool #

max :: CoSel -> CoSel -> CoSel #

min :: CoSel -> CoSel -> CoSel #

data FunSel Source #

Constructors

SelMult 
SelArg 
SelRes 

Instances

Instances details
Outputable FunSel Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

ppr :: FunSel -> SDoc Source #

Data FunSel Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

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

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

toConstr :: FunSel -> Constr #

dataTypeOf :: FunSel -> DataType #

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

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

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

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

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

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

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

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

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

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

Eq FunSel Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

(==) :: FunSel -> FunSel -> Bool #

(/=) :: FunSel -> FunSel -> Bool #

Ord FunSel Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

data UnivCoProvenance Source #

For simplicity, we have just one UnivCo that represents a coercion from some type to some other type, with (in general) no restrictions on the type. The UnivCoProvenance specifies more exactly what the coercion really is and why a program should (or shouldn't!) trust the coercion. It is reasonable to consider each constructor of UnivCoProvenance as a totally independent coercion form; their only commonality is that they don't tell you what types they coercion between. (That info is in the UnivCo constructor of Coercion.

Constructors

PhantomProv

See Note [Phantom coercions]. Only in Phantom roled coercions

ProofIrrelProv

From the fact that any two coercions are considered equivalent. See Note [ProofIrrelProv]. Can be used in Nominal or Representational coercions

PluginProv String

From a plugin, which asserts that this coercion is sound. The string and the variable set are for the use by the plugin.

Instances

Instances details
NFData UnivCoProvenance Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

rnf :: UnivCoProvenance -> () Source #

Binary UnivCoProvenance Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Outputable UnivCoProvenance Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Data UnivCoProvenance Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

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

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

toConstr :: UnivCoProvenance -> Constr #

dataTypeOf :: UnivCoProvenance -> DataType #

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

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

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

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

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

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

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

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

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

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

Eq UnivCoProvenance Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Ord UnivCoProvenance Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

data CoercionHole Source #

A coercion to be filled in by the type-checker. See Note [Coercion holes]

Instances

Instances details
Uniquable CoercionHole Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Outputable CoercionHole Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Data CoercionHole Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

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

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

toConstr :: CoercionHole -> Constr #

dataTypeOf :: CoercionHole -> DataType #

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

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

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

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

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

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

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

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

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

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

data MCoercion Source #

A semantically more meaningful type to represent what may or may not be a useful Coercion.

Constructors

MRefl 
MCo Coercion 

Instances

Instances details
Outputable MCoercion Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

ppr :: MCoercion -> SDoc Source #

Data MCoercion Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

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

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

toConstr :: MCoercion -> Constr #

dataTypeOf :: MCoercion -> DataType #

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

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

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

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

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

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

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

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

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

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

Functions over types

mkNakedTyConTy :: TyCon -> Type Source #

mkNakedTyConTy creates a nullary TyConApp. In general you should rather use mkTyConTy, which picks the shared nullary TyConApp from inside the TyCon (via tyConNullaryTy. But we have to build the TyConApp tc [] in that TyCon field; that's what mkNakedTyConTy is for.

mkForAllTy :: ForAllTyBinder -> Type -> Type Source #

Like mkTyCoForAllTy, but does not check the occurrence of the binder See Note [Unused coercion variable in ForAllTy]

mkForAllTys :: [ForAllTyBinder] -> Type -> Type Source #

Wraps foralls over the type using the provided TyCoVars from left to right

mkInvisForAllTys :: [InvisTVBinder] -> Type -> Type Source #

Wraps foralls over the type using the provided InvisTVBinders from left to right

mkVisFunTyMany :: HasDebugCallStack => Type -> Type -> Type infixr 3 Source #

Make nested arrow types | Special, common, case: Arrow type with mult Many

Functions over coercions

pickLR :: LeftOrRight -> (a, a) -> a Source #

Analyzing types

data TyCoFolder env a Source #

Constructors

TyCoFolder 

Fields

foldTyCo :: Monoid a => TyCoFolder env a -> env -> (Type -> a, [Type] -> a, Coercion -> a, [Coercion] -> a) Source #

noView :: Type -> Maybe Type Source #

A view function that looks through nothing.

Sizes

Multiplicities

data Scaled a Source #

A shorthand for data with an attached Mult element (the multiplicity).

Constructors

Scaled !Mult a 

Instances

Instances details
Outputable a => Outputable (Scaled a) Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

ppr :: Scaled a -> SDoc Source #

Data a => Data (Scaled a) Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Scaled a -> c (Scaled a) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Scaled a) #

toConstr :: Scaled a -> Constr #

dataTypeOf :: Scaled a -> DataType #

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

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

gmapT :: (forall b. Data b => b -> b) -> Scaled a -> Scaled a #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Scaled a -> r #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Scaled a -> r #

gmapQ :: (forall d. Data d => d -> u) -> Scaled a -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Scaled a -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Scaled a -> m (Scaled a) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Scaled a -> m (Scaled a) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Scaled a -> m (Scaled a) #

mapScaledType :: (Type -> Type) -> Scaled Type -> Scaled Type Source #

Apply a function to both the Mult and the Type in a 'Scaled Type'

type Mult = Type Source #

Mult is a type alias for Type.

Mult must contain Type because multiplicity variables are mere type variables (of kind Multiplicity) in Haskell. So the simplest implementation is to make Mult be Type.

Multiplicities can be formed with: - One: GHC.Types.One (= oneDataCon) - Many: GHC.Types.Many (= manyDataCon) - Multiplication: GHC.Types.MultMul (= multMulTyCon)

So that Mult feels a bit more structured, we provide pattern synonyms and smart constructors for these.