Copyright	(C) 2014 Jan Stolarek
License	BSD-style (see LICENSE)
Maintainer	Jan Stolarek (jan.stolarek@p.lodz.pl)
Stability	experimental
Portability	non-portable
Safe Haskell	None
Language	Haskell2010

Data.Promotion.Prelude.Maybe

Contents

Promoted functions from Data.Maybe
Defunctionalization symbols

Description

Defines promoted functions and datatypes relating to Maybe, including a promoted version of all the definitions in Data.Maybe.

Because many of these definitions are produced by Template Haskell, it is not possible to create proper Haddock documentation. Please look up the corresponding operation in Data.Maybe. Also, please excuse the apparent repeated variable names. This is due to an interaction between Template Haskell and Haddock.

Synopsis

maybe_ :: b -> (a -> b) -> Maybe a -> b
type family Maybe_ (a :: b) (a :: TyFun a b -> Type) (a :: Maybe a) :: b where ...
type family IsJust (a :: Maybe a) :: Bool where ...
type family IsNothing (a :: Maybe a) :: Bool where ...
type family FromJust (a :: Maybe a) :: a where ...
type family FromMaybe (a :: a) (a :: Maybe a) :: a where ...
type family MaybeToList (a :: Maybe a) :: [a] where ...
type family ListToMaybe (a :: [a]) :: Maybe a where ...
type family CatMaybes (a :: [Maybe a]) :: [a] where ...
type family MapMaybe (a :: TyFun a (Maybe b) -> Type) (a :: [a]) :: [b] where ...
type NothingSym0 = Nothing
data JustSym0 (l :: TyFun a3530822107858468865 (Maybe a3530822107858468865))
type JustSym1 (t :: a3530822107858468865) = Just t
data Maybe_Sym0 (l :: TyFun b6989586621679419480 (TyFun (TyFun a6989586621679419481 b6989586621679419480 -> Type) (TyFun (Maybe a6989586621679419481) b6989586621679419480 -> Type) -> Type))
data Maybe_Sym1 (l :: b6989586621679419480) (l :: TyFun (TyFun a6989586621679419481 b6989586621679419480 -> Type) (TyFun (Maybe a6989586621679419481) b6989586621679419480 -> Type))
data Maybe_Sym2 (l :: b6989586621679419480) (l :: TyFun a6989586621679419481 b6989586621679419480 -> Type) (l :: TyFun (Maybe a6989586621679419481) b6989586621679419480)
type Maybe_Sym3 (t :: b6989586621679419480) (t :: TyFun a6989586621679419481 b6989586621679419480 -> Type) (t :: Maybe a6989586621679419481) = Maybe_ t t t
data IsJustSym0 (l :: TyFun (Maybe a6989586621679420601) Bool)
type IsJustSym1 (t :: Maybe a6989586621679420601) = IsJust t
data IsNothingSym0 (l :: TyFun (Maybe a6989586621679420600) Bool)
type IsNothingSym1 (t :: Maybe a6989586621679420600) = IsNothing t
data FromJustSym0 (l :: TyFun (Maybe a6989586621679420599) a6989586621679420599)
type FromJustSym1 (t :: Maybe a6989586621679420599) = FromJust t
data FromMaybeSym0 (l :: TyFun a6989586621679420598 (TyFun (Maybe a6989586621679420598) a6989586621679420598 -> Type))
data FromMaybeSym1 (l :: a6989586621679420598) (l :: TyFun (Maybe a6989586621679420598) a6989586621679420598)
type FromMaybeSym2 (t :: a6989586621679420598) (t :: Maybe a6989586621679420598) = FromMaybe t t
data MaybeToListSym0 (l :: TyFun (Maybe a6989586621679420597) [a6989586621679420597])
type MaybeToListSym1 (t :: Maybe a6989586621679420597) = MaybeToList t
data ListToMaybeSym0 (l :: TyFun [a6989586621679420596] (Maybe a6989586621679420596))
type ListToMaybeSym1 (t :: [a6989586621679420596]) = ListToMaybe t
data CatMaybesSym0 (l :: TyFun [Maybe a6989586621679420595] [a6989586621679420595])
type CatMaybesSym1 (t :: [Maybe a6989586621679420595]) = CatMaybes t
data MapMaybeSym0 (l :: TyFun (TyFun a6989586621679420593 (Maybe b6989586621679420594) -> Type) (TyFun [a6989586621679420593] [b6989586621679420594] -> Type))
data MapMaybeSym1 (l :: TyFun a6989586621679420593 (Maybe b6989586621679420594) -> Type) (l :: TyFun [a6989586621679420593] [b6989586621679420594])
type MapMaybeSym2 (t :: TyFun a6989586621679420593 (Maybe b6989586621679420594) -> Type) (t :: [a6989586621679420593]) = MapMaybe t t

Promoted functions from `Data.Maybe`

maybe_ :: b -> (a -> b) -> Maybe a -> b #

type family Maybe_ (a :: b) (a :: TyFun a b -> Type) (a :: Maybe a) :: b where ... #

Equations

Maybe_ n _ Nothing = n
Maybe_ _ f (Just x) = Apply f x

The preceding two definitions is derived from the function maybe in Data.Maybe. The extra underscore is to avoid name clashes with the type Maybe.

type family IsJust (a :: Maybe a) :: Bool where ... #

Equations

IsJust Nothing = FalseSym0
IsJust (Just _) = TrueSym0

type family IsNothing (a :: Maybe a) :: Bool where ... #

Equations

IsNothing Nothing = TrueSym0
IsNothing (Just _) = FalseSym0

type family FromJust (a :: Maybe a) :: a where ... #

Equations

FromJust Nothing = Apply ErrorSym0 "Maybe.fromJust: Nothing"
FromJust (Just x) = x

type family FromMaybe (a :: a) (a :: Maybe a) :: a where ... #

Equations

FromMaybe d x = Case_6989586621679420830 d x x

type family MaybeToList (a :: Maybe a) :: [a] where ... #

Equations

MaybeToList Nothing = '[]
MaybeToList (Just x) = Apply (Apply (:@#@$) x) '[]

type family ListToMaybe (a :: [a]) :: Maybe a where ... #

Equations

ListToMaybe '[] = NothingSym0
ListToMaybe ((:) a _) = Apply JustSym0 a

type family CatMaybes (a :: [Maybe a]) :: [a] where ... #

Equations

CatMaybes '[] = '[]
CatMaybes ((:) (Just x) xs) = Apply (Apply (:@#@$) x) (Apply CatMaybesSym0 xs)
CatMaybes ((:) Nothing xs) = Apply CatMaybesSym0 xs

type family MapMaybe (a :: TyFun a (Maybe b) -> Type) (a :: [a]) :: [b] where ... #

Equations

MapMaybe _ '[] = '[]
MapMaybe f ((:) x xs) = Case_6989586621679420798 f x xs (Let6989586621679420785Scrutinee_6989586621679420628Sym3 f x xs)

Defunctionalization symbols

type NothingSym0 = Nothing #

data JustSym0 (l :: TyFun a3530822107858468865 (Maybe a3530822107858468865)) #

Instances

SuppressUnusedWarnings (JustSym0 :: TyFun a3530822107858468865 (Maybe a3530822107858468865) -> *) #
Instance details Defined in Data.Singletons.Prelude.Instances Methods suppressUnusedWarnings :: () #
type Apply (JustSym0 :: TyFun a (Maybe a) -> *) (l :: a) #
Instance details Defined in Data.Singletons.Prelude.Instances type Apply (JustSym0 :: TyFun a (Maybe a) -> *) (l :: a) = Just l

type JustSym1 (t :: a3530822107858468865) = Just t #

data Maybe_Sym0 (l :: TyFun b6989586621679419480 (TyFun (TyFun a6989586621679419481 b6989586621679419480 -> Type) (TyFun (Maybe a6989586621679419481) b6989586621679419480 -> Type) -> Type)) #

Instances

SuppressUnusedWarnings (Maybe_Sym0 :: TyFun b6989586621679419480 (TyFun (TyFun a6989586621679419481 b6989586621679419480 -> Type) (TyFun (Maybe a6989586621679419481) b6989586621679419480 -> Type) -> Type) -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (Maybe_Sym0 :: TyFun b6989586621679419480 (TyFun (TyFun a6989586621679419481 b6989586621679419480 -> Type) (TyFun (Maybe a6989586621679419481) b6989586621679419480 -> Type) -> Type) -> *) (l :: b6989586621679419480) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (Maybe_Sym0 :: TyFun b6989586621679419480 (TyFun (TyFun a6989586621679419481 b6989586621679419480 -> Type) (TyFun (Maybe a6989586621679419481) b6989586621679419480 -> Type) -> Type) -> ) (l :: b6989586621679419480) = (Maybe_Sym1 l :: TyFun (TyFun a6989586621679419481 b6989586621679419480 -> Type) (TyFun (Maybe a6989586621679419481) b6989586621679419480 -> Type) -> )

data Maybe_Sym1 (l :: b6989586621679419480) (l :: TyFun (TyFun a6989586621679419481 b6989586621679419480 -> Type) (TyFun (Maybe a6989586621679419481) b6989586621679419480 -> Type)) #

Instances

SuppressUnusedWarnings (Maybe_Sym1 :: b6989586621679419480 -> TyFun (TyFun a6989586621679419481 b6989586621679419480 -> Type) (TyFun (Maybe a6989586621679419481) b6989586621679419480 -> Type) -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (Maybe_Sym1 l1 :: TyFun (TyFun a6989586621679419481 b6989586621679419480 -> Type) (TyFun (Maybe a6989586621679419481) b6989586621679419480 -> Type) -> *) (l2 :: TyFun a6989586621679419481 b6989586621679419480 -> Type) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (Maybe_Sym1 l1 :: TyFun (TyFun a6989586621679419481 b6989586621679419480 -> Type) (TyFun (Maybe a6989586621679419481) b6989586621679419480 -> Type) -> *) (l2 :: TyFun a6989586621679419481 b6989586621679419480 -> Type) = Maybe_Sym2 l1 l2

data Maybe_Sym2 (l :: b6989586621679419480) (l :: TyFun a6989586621679419481 b6989586621679419480 -> Type) (l :: TyFun (Maybe a6989586621679419481) b6989586621679419480) #

Instances

SuppressUnusedWarnings (Maybe_Sym2 :: b6989586621679419480 -> (TyFun a6989586621679419481 b6989586621679419480 -> Type) -> TyFun (Maybe a6989586621679419481) b6989586621679419480 -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (Maybe_Sym2 l1 l2 :: TyFun (Maybe a) b -> *) (l3 :: Maybe a) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (Maybe_Sym2 l1 l2 :: TyFun (Maybe a) b -> *) (l3 :: Maybe a) = Maybe_ l1 l2 l3

type Maybe_Sym3 (t :: b6989586621679419480) (t :: TyFun a6989586621679419481 b6989586621679419480 -> Type) (t :: Maybe a6989586621679419481) = Maybe_ t t t #

data IsJustSym0 (l :: TyFun (Maybe a6989586621679420601) Bool) #

Instances

SuppressUnusedWarnings (IsJustSym0 :: TyFun (Maybe a6989586621679420601) Bool -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (IsJustSym0 :: TyFun (Maybe a) Bool -> *) (l :: Maybe a) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (IsJustSym0 :: TyFun (Maybe a) Bool -> *) (l :: Maybe a) = IsJust l

type IsJustSym1 (t :: Maybe a6989586621679420601) = IsJust t #

data IsNothingSym0 (l :: TyFun (Maybe a6989586621679420600) Bool) #

Instances

SuppressUnusedWarnings (IsNothingSym0 :: TyFun (Maybe a6989586621679420600) Bool -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (IsNothingSym0 :: TyFun (Maybe a) Bool -> *) (l :: Maybe a) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (IsNothingSym0 :: TyFun (Maybe a) Bool -> *) (l :: Maybe a) = IsNothing l

type IsNothingSym1 (t :: Maybe a6989586621679420600) = IsNothing t #

data FromJustSym0 (l :: TyFun (Maybe a6989586621679420599) a6989586621679420599) #

Instances

SuppressUnusedWarnings (FromJustSym0 :: TyFun (Maybe a6989586621679420599) a6989586621679420599 -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (FromJustSym0 :: TyFun (Maybe a) a -> *) (l :: Maybe a) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (FromJustSym0 :: TyFun (Maybe a) a -> *) (l :: Maybe a) = FromJust l

type FromJustSym1 (t :: Maybe a6989586621679420599) = FromJust t #

data FromMaybeSym0 (l :: TyFun a6989586621679420598 (TyFun (Maybe a6989586621679420598) a6989586621679420598 -> Type)) #

Instances

SuppressUnusedWarnings (FromMaybeSym0 :: TyFun a6989586621679420598 (TyFun (Maybe a6989586621679420598) a6989586621679420598 -> Type) -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (FromMaybeSym0 :: TyFun a6989586621679420598 (TyFun (Maybe a6989586621679420598) a6989586621679420598 -> Type) -> *) (l :: a6989586621679420598) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (FromMaybeSym0 :: TyFun a6989586621679420598 (TyFun (Maybe a6989586621679420598) a6989586621679420598 -> Type) -> *) (l :: a6989586621679420598) = FromMaybeSym1 l

data FromMaybeSym1 (l :: a6989586621679420598) (l :: TyFun (Maybe a6989586621679420598) a6989586621679420598) #

Instances

SuppressUnusedWarnings (FromMaybeSym1 :: a6989586621679420598 -> TyFun (Maybe a6989586621679420598) a6989586621679420598 -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (FromMaybeSym1 l1 :: TyFun (Maybe a) a -> *) (l2 :: Maybe a) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (FromMaybeSym1 l1 :: TyFun (Maybe a) a -> *) (l2 :: Maybe a) = FromMaybe l1 l2

type FromMaybeSym2 (t :: a6989586621679420598) (t :: Maybe a6989586621679420598) = FromMaybe t t #

data MaybeToListSym0 (l :: TyFun (Maybe a6989586621679420597) [a6989586621679420597]) #

Instances

SuppressUnusedWarnings (MaybeToListSym0 :: TyFun (Maybe a6989586621679420597) [a6989586621679420597] -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (MaybeToListSym0 :: TyFun (Maybe a) [a] -> *) (l :: Maybe a) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (MaybeToListSym0 :: TyFun (Maybe a) [a] -> *) (l :: Maybe a) = MaybeToList l

type MaybeToListSym1 (t :: Maybe a6989586621679420597) = MaybeToList t #

data ListToMaybeSym0 (l :: TyFun [a6989586621679420596] (Maybe a6989586621679420596)) #

Instances

SuppressUnusedWarnings (ListToMaybeSym0 :: TyFun [a6989586621679420596] (Maybe a6989586621679420596) -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (ListToMaybeSym0 :: TyFun [a] (Maybe a) -> *) (l :: [a]) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (ListToMaybeSym0 :: TyFun [a] (Maybe a) -> *) (l :: [a]) = ListToMaybe l

type ListToMaybeSym1 (t :: [a6989586621679420596]) = ListToMaybe t #

data CatMaybesSym0 (l :: TyFun [Maybe a6989586621679420595] [a6989586621679420595]) #

Instances

SuppressUnusedWarnings (CatMaybesSym0 :: TyFun [Maybe a6989586621679420595] [a6989586621679420595] -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (CatMaybesSym0 :: TyFun [Maybe a] [a] -> *) (l :: [Maybe a]) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (CatMaybesSym0 :: TyFun [Maybe a] [a] -> *) (l :: [Maybe a]) = CatMaybes l

type CatMaybesSym1 (t :: [Maybe a6989586621679420595]) = CatMaybes t #

data MapMaybeSym0 (l :: TyFun (TyFun a6989586621679420593 (Maybe b6989586621679420594) -> Type) (TyFun [a6989586621679420593] [b6989586621679420594] -> Type)) #

Instances

SuppressUnusedWarnings (MapMaybeSym0 :: TyFun (TyFun a6989586621679420593 (Maybe b6989586621679420594) -> Type) (TyFun [a6989586621679420593] [b6989586621679420594] -> Type) -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (MapMaybeSym0 :: TyFun (TyFun a6989586621679420593 (Maybe b6989586621679420594) -> Type) (TyFun [a6989586621679420593] [b6989586621679420594] -> Type) -> *) (l :: TyFun a6989586621679420593 (Maybe b6989586621679420594) -> Type) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (MapMaybeSym0 :: TyFun (TyFun a6989586621679420593 (Maybe b6989586621679420594) -> Type) (TyFun [a6989586621679420593] [b6989586621679420594] -> Type) -> *) (l :: TyFun a6989586621679420593 (Maybe b6989586621679420594) -> Type) = MapMaybeSym1 l

data MapMaybeSym1 (l :: TyFun a6989586621679420593 (Maybe b6989586621679420594) -> Type) (l :: TyFun [a6989586621679420593] [b6989586621679420594]) #

Instances

SuppressUnusedWarnings (MapMaybeSym1 :: (TyFun a6989586621679420593 (Maybe b6989586621679420594) -> Type) -> TyFun [a6989586621679420593] [b6989586621679420594] -> *) #
Instance details Defined in Data.Singletons.Prelude.Maybe Methods suppressUnusedWarnings :: () #
type Apply (MapMaybeSym1 l1 :: TyFun [a] [b] -> *) (l2 :: [a]) #
Instance details Defined in Data.Singletons.Prelude.Maybe type Apply (MapMaybeSym1 l1 :: TyFun [a] [b] -> *) (l2 :: [a]) = MapMaybe l1 l2

type MapMaybeSym2 (t :: TyFun a6989586621679420593 (Maybe b6989586621679420594) -> Type) (t :: [a6989586621679420593]) = MapMaybe t t #

Promoted functions from Data.Maybe

Defunctionalization symbols

Promoted functions from `Data.Maybe`