singletons-2.5: A framework for generating singleton types

Copyright(C) 2013 Richard Eisenberg
LicenseBSD-style (see LICENSE)
MaintainerRyan Scott
Stabilityexperimental
Portabilitynon-portable
Safe HaskellNone
LanguageHaskell2010

Data.Singletons.TypeRepTYPE

Contents

Description

This module defines singleton instances making TypeRep the singleton for the kind TYPE rep (for some RuntimeRep rep), an instantiation of which is the famous kind Type. The definitions don't fully line up with what is expected within the singletons library, so expect unusual results!

Synopsis

Documentation

data family Sing :: k -> Type Source #

The singleton kind-indexed data family.

Instances
SDecide k => TestCoercion (Sing :: k -> Type) Source # 
Instance details

Defined in Data.Singletons.Decide

Methods

testCoercion :: Sing a -> Sing b -> Maybe (Coercion a b) #

SDecide k => TestEquality (Sing :: k -> Type) Source # 
Instance details

Defined in Data.Singletons.Decide

Methods

testEquality :: Sing a -> Sing b -> Maybe (a :~: b) #

Show (SSymbol s) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> SSymbol s -> ShowS #

show :: SSymbol s -> String #

showList :: [SSymbol s] -> ShowS #

Show (SNat n) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> SNat n -> ShowS #

show :: SNat n -> String #

showList :: [SNat n] -> ShowS #

Eq (Sing a) Source # 
Instance details

Defined in Data.Singletons.TypeRepTYPE

Methods

(==) :: Sing a -> Sing a -> Bool #

(/=) :: Sing a -> Sing a -> Bool #

Ord (Sing a) Source # 
Instance details

Defined in Data.Singletons.TypeRepTYPE

Methods

compare :: Sing a -> Sing a -> Ordering #

(<) :: Sing a -> Sing a -> Bool #

(<=) :: Sing a -> Sing a -> Bool #

(>) :: Sing a -> Sing a -> Bool #

(>=) :: Sing a -> Sing a -> Bool #

max :: Sing a -> Sing a -> Sing a #

min :: Sing a -> Sing a -> Sing a #

Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

(ShowSing a, ShowSing [a]) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing a => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

(ShowSing a, ShowSing b) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

Show (Sing a) Source # 
Instance details

Defined in Data.Singletons.TypeRepTYPE

Methods

showsPrec :: Int -> Sing a -> ShowS #

show :: Sing a -> String #

showList :: [Sing a] -> ShowS #

Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

(ShowSing a, ShowSing b) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

(ShowSing a, ShowSing b, ShowSing c) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

(ShowSing a, ShowSing b, ShowSing c, ShowSing d) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

(ShowSing a, ShowSing b, ShowSing c, ShowSing d, ShowSing e) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

(ShowSing a, ShowSing b, ShowSing c, ShowSing d, ShowSing e, ShowSing f) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

(ShowSing a, ShowSing b, ShowSing c, ShowSing d, ShowSing e, ShowSing f, ShowSing g) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing a => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing a => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

(ShowSing a, ShowSing b) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing a => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing a => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing m => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing (Maybe a) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing a => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing (Maybe a) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Monoid

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing (Maybe a) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Monoid

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing a => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing Bool => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing Bool => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing a => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

ShowSing a => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

(ShowSing a, ShowSing [a]) => Show (Sing z) Source # 
Instance details

Defined in Data.Singletons.ShowSing

Methods

showsPrec :: Int -> Sing z -> ShowS #

show :: Sing z -> String #

showList :: [Sing z] -> ShowS #

data Sing (a :: Bool) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (a :: Bool) where
data Sing (a :: Ordering) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (a :: Ordering) where
data Sing (n :: Nat) Source # 
Instance details

Defined in Data.Singletons.TypeLits.Internal

data Sing (n :: Nat) where
data Sing (n :: Symbol) Source # 
Instance details

Defined in Data.Singletons.TypeLits.Internal

data Sing (n :: Symbol) where
data Sing (a :: ()) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (a :: ()) where
data Sing (a :: Void) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (a :: Void)
data Sing (a :: All) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup.Internal

data Sing (a :: All) where
data Sing (a :: Any) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup.Internal

data Sing (a :: Any) where
data Sing (a :: PErrorMessage) Source # 
Instance details

Defined in Data.Singletons.TypeError

data Sing (a :: PErrorMessage) where
data Sing (b :: [a]) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (b :: [a]) where
  • SNil :: forall k (b :: [k]). Sing ([] :: [k])
  • SCons :: forall a (b :: [a]) (n :: a) (n :: [a]). Sing n -> Sing n -> Sing (n ': n)
data Sing (b :: Maybe a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (b :: Maybe a) where
data Sing (a :: TYPE rep) Source #

A choice of singleton for the kind TYPE rep (for some RuntimeRep rep), an instantiation of which is the famous kind Type.

Conceivably, one could generalize this instance to `Sing :: k -> Type` for any kind k, and remove all other Sing instances. We don't adopt this design, however, since it is far more convenient in practice to work with explicit singleton values than TypeReps (for instance, TypeReps are more difficult to pattern match on, and require extra runtime checks).

We cannot produce explicit singleton values for everything in TYPE rep, however, since it is an open kind, so we reach for TypeRep in this one particular case.

Instance details

Defined in Data.Singletons.TypeRepTYPE

data Sing (a :: TYPE rep) = STypeRep (TypeRep a)
data Sing (b :: Min a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup.Internal

data Sing (b :: Min a) where
data Sing (b :: Max a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup.Internal

data Sing (b :: Max a) where
data Sing (b :: First a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup.Internal

data Sing (b :: First a) where
data Sing (b :: Last a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup.Internal

data Sing (b :: Last a) where
data Sing (a :: WrappedMonoid m) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup.Internal

data Sing (a :: WrappedMonoid m) where
data Sing (b :: Option a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup.Internal

data Sing (b :: Option a) where
data Sing (b :: Identity a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (b :: Identity a) where
data Sing (b :: First a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Monoid

data Sing (b :: First a) where
data Sing (b :: Last a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Monoid

data Sing (b :: Last a) where
data Sing (b :: Dual a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup.Internal

data Sing (b :: Dual a) where
data Sing (b :: Sum a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup.Internal

data Sing (b :: Sum a) where
data Sing (b :: Product a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup.Internal

data Sing (b :: Product a) where
data Sing (b :: Down a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Ord

data Sing (b :: Down a) where
data Sing (b :: NonEmpty a) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (b :: NonEmpty a) where
data Sing (c :: Either a b) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (c :: Either a b) where
data Sing (c :: (a, b)) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (c :: (a, b)) where
data Sing (c :: Arg a b) Source # 
Instance details

Defined in Data.Singletons.Prelude.Semigroup

data Sing (c :: Arg a b) where
data Sing (f :: k1 ~> k2) Source # 
Instance details

Defined in Data.Singletons.Internal

data Sing (f :: k1 ~> k2) = SLambda {}
data Sing (d :: (a, b, c)) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (d :: (a, b, c)) where
data Sing (c :: Const a b) Source # 
Instance details

Defined in Data.Singletons.Prelude.Const

data Sing (c :: Const a b) where
data Sing (e :: (a, b, c, d)) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (e :: (a, b, c, d)) where
data Sing (f :: (a, b, c, d, e)) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (f :: (a, b, c, d, e)) where
data Sing (g :: (a, b, c, d, e, f)) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (g :: (a, b, c, d, e, f)) where
data Sing (h :: (a, b, c, d, e, f, g)) Source # 
Instance details

Defined in Data.Singletons.Prelude.Instances

data Sing (h :: (a, b, c, d, e, f, g)) where

Here is the definition of the singleton for TYPE rep:

newtype instance Sing :: forall (rep :: RuntimeRep). TYPE rep -> Type where
  STypeRep :: forall (rep :: RuntimeRep) (a :: TYPE rep). TypeRep a -> Sing a

Instances for SingI, SingKind, SEq, SDecide, and TestCoercion are also supplied.

data SomeTypeRepTYPE :: RuntimeRep -> Type where Source #

A variant of SomeTypeRep whose underlying TypeRep is restricted to kind TYPE rep (for some RuntimeRep rep).

Constructors

SomeTypeRepTYPE :: forall (rep :: RuntimeRep) (a :: TYPE rep). !(TypeRep a) -> SomeTypeRepTYPE rep 

Orphan instances

SingKind (TYPE rep) Source # 
Instance details

Associated Types

type Demote (TYPE rep) = (r :: Type) Source #

Methods

fromSing :: Sing a -> Demote (TYPE rep) Source #

toSing :: Demote (TYPE rep) -> SomeSing (TYPE rep) Source #

SDecide (TYPE rep) Source # 
Instance details

Methods

(%~) :: Sing a -> Sing b -> Decision (a :~: b) Source #

PEq (TYPE rep) Source # 
Instance details

Associated Types

type x == y :: Bool Source #

type x /= y :: Bool Source #

SEq (TYPE rep) Source # 
Instance details

Methods

(%==) :: Sing a -> Sing b -> Sing (a == b) Source #

(%/=) :: Sing a -> Sing b -> Sing (a /= b) Source #

Typeable a => SingI (a :: TYPE rep) Source # 
Instance details

Methods

sing :: Sing a Source #

Eq (Sing a) Source # 
Instance details

Methods

(==) :: Sing a -> Sing a -> Bool #

(/=) :: Sing a -> Sing a -> Bool #

Ord (Sing a) Source # 
Instance details

Methods

compare :: Sing a -> Sing a -> Ordering #

(<) :: Sing a -> Sing a -> Bool #

(<=) :: Sing a -> Sing a -> Bool #

(>) :: Sing a -> Sing a -> Bool #

(>=) :: Sing a -> Sing a -> Bool #

max :: Sing a -> Sing a -> Sing a #

min :: Sing a -> Sing a -> Sing a #

Show (Sing a) Source # 
Instance details

Methods

showsPrec :: Int -> Sing a -> ShowS #

show :: Sing a -> String #

showList :: [Sing a] -> ShowS #