Data.Typeable.Internal

base-4.9.0.0: Basic libraries

Copyright | (c) The University of Glasgow, CWI 2001--2011
License | BSD-style (see the file libraries/base/LICENSE)
Safe Haskell | Trustworthy
Language | Haskell2010

Data.Typeable.Internal

Contents

- Typeable class
- Module
- TyCon
- TypeRep

Description

The representations of the types TyCon and TypeRep, and the function mkTyCon which is used by derived instances of Typeable to construct a TyCon.

Synopsis

- data Proxy t = Proxy
- data Fingerprint = Fingerprint !Word64 !Word64
- typeOf :: forall a. Typeable a => a -> TypeRep
- typeOf1 :: forall t a. Typeable t => t a -> TypeRep
- typeOf2 :: forall t a b. Typeable t => t a b -> TypeRep
- typeOf3 :: forall t a b c. Typeable t => t a b c -> TypeRep
- typeOf4 :: forall t a b c d. Typeable t => t a b c d -> TypeRep
- typeOf5 :: forall t a b c d e. Typeable t => t a b c d e -> TypeRep
- typeOf6 :: forall t a b c d e f. Typeable t => t a b c d e f -> TypeRep
- typeOf7 :: forall t a b c d e f g. Typeable t => t a b c d e f g -> TypeRep
- type Typeable1 a = Typeable a
- type Typeable2 a = Typeable a
- type Typeable3 a = Typeable a
- type Typeable4 a = Typeable a
- type Typeable5 a = Typeable a
- type Typeable6 a = Typeable a
- type Typeable7 a = Typeable a
- data Module :: TYPE Lifted
- moduleName :: Module -> String
- modulePackage :: Module -> String
- data TyCon :: TYPE Lifted
- tyConPackage :: TyCon -> String
- tyConModule :: TyCon -> String
- tyConName :: TyCon -> String
- tyConString :: TyCon -> String
- tyConFingerprint :: TyCon -> Fingerprint
- mkTyCon3 :: String -> String -> String -> TyCon
- mkTyCon3# :: Addr# -> Addr# -> Addr# -> TyCon
- rnfTyCon :: TyCon -> ()
- data TypeRep = TypeRep !Fingerprint TyCon [KindRep] [TypeRep]
- type KindRep = TypeRep
- typeRep :: forall proxy a. Typeable a => proxy a -> TypeRep
- mkTyConApp :: TyCon -> [TypeRep] -> TypeRep
- mkPolyTyConApp :: TyCon -> [KindRep] -> [TypeRep] -> TypeRep
- mkAppTy :: TypeRep -> TypeRep -> TypeRep
- typeRepTyCon :: TypeRep -> TyCon
- class Typeable a where
- mkFunTy :: TypeRep -> TypeRep -> TypeRep
- splitTyConApp :: TypeRep -> (TyCon, [TypeRep])
- splitPolyTyConApp :: TypeRep -> (TyCon, [KindRep], [TypeRep])
- funResultTy :: TypeRep -> TypeRep -> Maybe TypeRep
- typeRepArgs :: TypeRep -> [TypeRep]
- typeRepFingerprint :: TypeRep -> Fingerprint
- rnfTypeRep :: TypeRep -> ()
- showsTypeRep :: TypeRep -> ShowS
- typeRepKinds :: TypeRep -> [KindRep]
- typeSymbolTypeRep :: KnownSymbol a => Proxy# a -> TypeRep
- typeNatTypeRep :: KnownNat a => Proxy# a -> TypeRep

# Documentation

data Proxy t Source

A concrete, poly-kinded proxy type

Constructors

Proxy |

Instances

Monad (Proxy (TYPE Lifted)) |
Methods (>>=) :: Proxy (TYPE Lifted) a -> (a -> Proxy (TYPE Lifted) b) -> Proxy (TYPE Lifted) b Source (>>) :: Proxy (TYPE Lifted) a -> Proxy (TYPE Lifted) b -> Proxy (TYPE Lifted) b Source return :: a -> Proxy (TYPE Lifted) a Source fail :: String -> Proxy (TYPE Lifted) a Source
Functor (Proxy (TYPE Lifted)) |
Methods fmap :: (a -> b) -> Proxy (TYPE Lifted) a -> Proxy (TYPE Lifted) b Source (<$) :: a -> Proxy (TYPE Lifted) b -> Proxy (TYPE Lifted) a Source
Applicative (Proxy (TYPE Lifted)) |
Methods pure :: a -> Proxy (TYPE Lifted) a Source (<*>) :: Proxy (TYPE Lifted) (a -> b) -> Proxy (TYPE Lifted) a -> Proxy (TYPE Lifted) b Source (*>) :: Proxy (TYPE Lifted) a -> Proxy (TYPE Lifted) b -> Proxy (TYPE Lifted) b Source (<*) :: Proxy (TYPE Lifted) a -> Proxy (TYPE Lifted) b -> Proxy (TYPE Lifted) a Source
Foldable (Proxy (TYPE Lifted)) |
Methods fold :: Monoid m => Proxy (TYPE Lifted) m -> m Source foldMap :: Monoid m => (a -> m) -> Proxy (TYPE Lifted) a -> m Source foldr :: (a -> b -> b) -> b -> Proxy (TYPE Lifted) a -> b Source foldr' :: (a -> b -> b) -> b -> Proxy (TYPE Lifted) a -> b Source foldl :: (b -> a -> b) -> b -> Proxy (TYPE Lifted) a -> b Source foldl' :: (b -> a -> b) -> b -> Proxy (TYPE Lifted) a -> b Source foldr1 :: (a -> a -> a) -> Proxy (TYPE Lifted) a -> a Source foldl1 :: (a -> a -> a) -> Proxy (TYPE Lifted) a -> a Source toList :: Proxy (TYPE Lifted) a -> [a] Source null :: Proxy (TYPE Lifted) a -> Bool Source length :: Proxy (TYPE Lifted) a -> Int Source elem :: Eq a => a -> Proxy (TYPE Lifted) a -> Bool Source maximum :: Ord a => Proxy (TYPE Lifted) a -> a Source minimum :: Ord a => Proxy (TYPE Lifted) a -> a Source sum :: Num a => Proxy (TYPE Lifted) a -> a Source product :: Num a => Proxy (TYPE Lifted) a -> a Source
Traversable (Proxy (TYPE Lifted)) |
Methods traverse :: Applicative f => (a -> f b) -> Proxy (TYPE Lifted) a -> f (Proxy (TYPE Lifted) b) Source sequenceA :: Applicative f => Proxy (TYPE Lifted) (f a) -> f (Proxy (TYPE Lifted) a) Source mapM :: Monad m => (a -> m b) -> Proxy (TYPE Lifted) a -> m (Proxy (TYPE Lifted) b) Source sequence :: Monad m => Proxy (TYPE Lifted) (m a) -> m (Proxy (TYPE Lifted) a) Source
Generic1 (Proxy *) |
Associated Types type Rep1 (Proxy * :: * -> TYPE Lifted) :: * -> * Source Methods from1 :: Proxy * a -> Rep1 (Proxy *) a Source to1 :: Rep1 (Proxy *) a -> Proxy * a Source
Bounded (Proxy k s) |
Methods minBound :: Proxy k s Source maxBound :: Proxy k s Source
Enum (Proxy k s) |
Methods succ :: Proxy k s -> Proxy k s Source pred :: Proxy k s -> Proxy k s Source toEnum :: Int -> Proxy k s Source fromEnum :: Proxy k s -> Int Source enumFrom :: Proxy k s -> [Proxy k s] Source enumFromThen :: Proxy k s -> Proxy k s -> [Proxy k s] Source enumFromTo :: Proxy k s -> Proxy k s -> [Proxy k s] Source enumFromThenTo :: Proxy k s -> Proxy k s -> Proxy k s -> [Proxy k s] Source
Eq (Proxy k s) |
Methods (==) :: Proxy k s -> Proxy k s -> Bool Source (/=) :: Proxy k s -> Proxy k s -> Bool Source
Data t => Data (Proxy (TYPE Lifted) t) |
Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Proxy (TYPE Lifted) t -> c (Proxy (TYPE Lifted) t) Source gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Proxy (TYPE Lifted) t) Source toConstr :: Proxy (TYPE Lifted) t -> Constr Source dataTypeOf :: Proxy (TYPE Lifted) t -> DataType Source dataCast1 :: Typeable (TYPE Lifted -> TYPE Lifted) t => (forall d. Data d => c (t d)) -> Maybe (c (Proxy (TYPE Lifted) t)) Source dataCast2 :: Typeable (TYPE Lifted -> TYPE Lifted -> TYPE Lifted) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Proxy (TYPE Lifted) t)) Source gmapT :: (forall b. Data b => b -> b) -> Proxy (TYPE Lifted) t -> Proxy (TYPE Lifted) t Source gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Proxy (TYPE Lifted) t -> r Source gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Proxy (TYPE Lifted) t -> r Source gmapQ :: (forall d. Data d => d -> u) -> Proxy (TYPE Lifted) t -> [u] Source gmapQi :: Int -> (forall d. Data d => d -> u) -> Proxy (TYPE Lifted) t -> u Source gmapM :: Monad m => (forall d. Data d => d -> m d) -> Proxy (TYPE Lifted) t -> m (Proxy (TYPE Lifted) t) Source gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Proxy (TYPE Lifted) t -> m (Proxy (TYPE Lifted) t) Source gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Proxy (TYPE Lifted) t -> m (Proxy (TYPE Lifted) t) Source
Ord (Proxy k s) |
Methods compare :: Proxy k s -> Proxy k s -> Ordering Source (<) :: Proxy k s -> Proxy k s -> Bool Source (<=) :: Proxy k s -> Proxy k s -> Bool Source (>) :: Proxy k s -> Proxy k s -> Bool Source (>=) :: Proxy k s -> Proxy k s -> Bool Source max :: Proxy k s -> Proxy k s -> Proxy k s Source min :: Proxy k s -> Proxy k s -> Proxy k s Source
Read (Proxy k s) |
Methods readsPrec :: Int -> ReadS (Proxy k s) Source readList :: ReadS [Proxy k s] Source readPrec :: ReadPrec (Proxy k s) Source readListPrec :: ReadPrec [Proxy k s] Source
Show (Proxy k s) |
Methods showsPrec :: Int -> Proxy k s -> ShowS Source show :: Proxy k s -> String Source showList :: [Proxy k s] -> ShowS Source
Ix (Proxy k s) |
Methods range :: (Proxy k s, Proxy k s) -> [Proxy k s] Source index :: (Proxy k s, Proxy k s) -> Proxy k s -> Int Source unsafeIndex :: (Proxy k s, Proxy k s) -> Proxy k s -> Int inRange :: (Proxy k s, Proxy k s) -> Proxy k s -> Bool Source rangeSize :: (Proxy k s, Proxy k s) -> Int Source unsafeRangeSize :: (Proxy k s, Proxy k s) -> Int
Generic (Proxy k t) |
Associated Types type Rep (Proxy k t) :: * -> * Source Methods from :: Proxy k t -> Rep (Proxy k t) x Source to :: Rep (Proxy k t) x -> Proxy k t Source
Semigroup (Proxy k s) |
Methods (<>) :: Proxy k s -> Proxy k s -> Proxy k s Source sconcat :: NonEmpty (Proxy k s) -> Proxy k s Source stimes :: Integral b => b -> Proxy k s -> Proxy k s Source
Monoid (Proxy k s) |
Methods mempty :: Proxy k s Source mappend :: Proxy k s -> Proxy k s -> Proxy k s Source mconcat :: [Proxy k s] -> Proxy k s Source
type Rep1 (Proxy k) = D1 (MetaData "Proxy" "Data.Proxy" "base" False) (C1 (MetaCons "Proxy" PrefixI False) U1) |
type Rep (Proxy k t) = D1 (MetaData "Proxy" "Data.Proxy" "base" False) (C1 (MetaCons "Proxy" PrefixI False) U1) |

data Fingerprint Source

Constructors

Fingerprint !Word64 !Word64 |

Instances

Eq Fingerprint |
Methods (==) :: Fingerprint -> Fingerprint -> Bool Source (/=) :: Fingerprint -> Fingerprint -> Bool Source
Ord Fingerprint |
Methods compare :: Fingerprint -> Fingerprint -> Ordering Source (<) :: Fingerprint -> Fingerprint -> Bool Source (<=) :: Fingerprint -> Fingerprint -> Bool Source (>) :: Fingerprint -> Fingerprint -> Bool Source (>=) :: Fingerprint -> Fingerprint -> Bool Source max :: Fingerprint -> Fingerprint -> Fingerprint Source min :: Fingerprint -> Fingerprint -> Fingerprint Source
Show Fingerprint |
Methods showsPrec :: Int -> Fingerprint -> ShowS Source show :: Fingerprint -> String Source showList :: [Fingerprint] -> ShowS Source
Storable Fingerprint |
Methods sizeOf :: Fingerprint -> Int Source alignment :: Fingerprint -> Int Source peekElemOff :: Ptr Fingerprint -> Int -> IO Fingerprint Source pokeElemOff :: Ptr Fingerprint -> Int -> Fingerprint -> IO () Source peekByteOff :: Ptr b -> Int -> IO Fingerprint Source pokeByteOff :: Ptr b -> Int -> Fingerprint -> IO () Source peek :: Ptr Fingerprint -> IO Fingerprint Source poke :: Ptr Fingerprint -> Fingerprint -> IO () Source

# Typeable class

typeOf :: forall a. Typeable a => a -> TypeRep Source

typeOf1 :: forall t a. Typeable t => t a -> TypeRep Source

typeOf2 :: forall t a b. Typeable t => t a b -> TypeRep Source

typeOf3 :: forall t a b c. Typeable t => t a b c -> TypeRep Source

typeOf4 :: forall t a b c d. Typeable t => t a b c d -> TypeRep Source

typeOf5 :: forall t a b c d e. Typeable t => t a b c d e -> TypeRep Source

typeOf6 :: forall t a b c d e f. Typeable t => t a b c d e f -> TypeRep Source

typeOf7 :: forall t a b c d e f g. Typeable t => t a b c d e f g -> TypeRep Source

type Typeable1 a = Typeable a Source

Deprecated: renamed to `Typeable`

type Typeable2 a = Typeable a Source

Deprecated: renamed to `Typeable`

type Typeable3 a = Typeable a Source

Deprecated: renamed to `Typeable`

type Typeable4 a = Typeable a Source

Deprecated: renamed to `Typeable`

type Typeable5 a = Typeable a Source

Deprecated: renamed to `Typeable`

type Typeable6 a = Typeable a Source

Deprecated: renamed to `Typeable`

type Typeable7 a = Typeable a Source

Deprecated: renamed to `Typeable`

# Module

data Module :: TYPE Lifted Source

Instances

Show Module |
Methods showsPrec :: Int -> Module -> ShowS Source show :: Module -> String Source showList :: [Module] -> ShowS Source

moduleName :: Module -> String Source

modulePackage :: Module -> String Source

# TyCon

data TyCon :: TYPE Lifted Source

Instances

Eq TyCon |
Methods (==) :: TyCon -> TyCon -> Bool Source (/=) :: TyCon -> TyCon -> Bool Source
Ord TyCon |
Methods compare :: TyCon -> TyCon -> Ordering Source (<) :: TyCon -> TyCon -> Bool Source (<=) :: TyCon -> TyCon -> Bool Source (>) :: TyCon -> TyCon -> Bool Source (>=) :: TyCon -> TyCon -> Bool Source max :: TyCon -> TyCon -> TyCon Source min :: TyCon -> TyCon -> TyCon Source
Show TyCon |
Methods showsPrec :: Int -> TyCon -> ShowS Source show :: TyCon -> String Source showList :: [TyCon] -> ShowS Source

tyConPackage :: TyCon -> String Source

tyConModule :: TyCon -> String Source

tyConName :: TyCon -> String Source

tyConString :: TyCon -> String Source

Deprecated: renamed to `tyConName`; `tyConModule` and `tyConPackage` are also available.

Observe string encoding of a type representation

tyConFingerprint :: TyCon -> Fingerprint Source

mkTyCon3 Source

Arguments

:: String | package name
-> String | module name
-> String | the name of the type constructor
-> TyCon | A unique `TyCon` object Used when the strings are dynamically allocated, eg from binary deserialisation

mkTyCon3# Source

Arguments

:: Addr# | package name
-> Addr# | module name
-> Addr# | the name of the type constructor
-> TyCon | A unique `TyCon` object

rnfTyCon :: TyCon -> () Source

# TypeRep

data TypeRep Source

A concrete representation of a (monomorphic) type. `TypeRep` supports reasonably efficient equality.

Constructors

TypeRep !Fingerprint TyCon [KindRep] [TypeRep] |

Instances

Eq TypeRep |
Methods (==) :: TypeRep -> TypeRep -> Bool Source (/=) :: TypeRep -> TypeRep -> Bool Source
Ord TypeRep |
Methods compare :: TypeRep -> TypeRep -> Ordering Source (<) :: TypeRep -> TypeRep -> Bool Source (<=) :: TypeRep -> TypeRep -> Bool Source (>) :: TypeRep -> TypeRep -> Bool Source (>=) :: TypeRep -> TypeRep -> Bool Source max :: TypeRep -> TypeRep -> TypeRep Source min :: TypeRep -> TypeRep -> TypeRep Source
Show TypeRep |
Methods showsPrec :: Int -> TypeRep -> ShowS Source show :: TypeRep -> String Source showList :: [TypeRep] -> ShowS Source

type KindRep = TypeRep Source

typeRep :: forall proxy a. Typeable a => proxy a -> TypeRep Source

Takes a value of type `a` and returns a concrete representation of that type.

Since: 4.7.0.0

mkTyConApp :: TyCon -> [TypeRep] -> TypeRep Source

Applies a kind-monomorphic type constructor to a sequence of types

mkPolyTyConApp :: TyCon -> [KindRep] -> [TypeRep] -> TypeRep Source

Applies a kind-polymorphic type constructor to a sequence of kinds and types

mkAppTy :: TypeRep -> TypeRep -> TypeRep Source

Adds a TypeRep argument to a TypeRep.

typeRepTyCon :: TypeRep -> TyCon Source

Observe the type constructor of a type representation

class Typeable a where Source

The class `Typeable` allows a concrete representation of a type to be calculated.

Minimal complete definition

typeRep#

Methods

typeRep# :: Proxy# a -> TypeRep Source

mkFunTy :: TypeRep -> TypeRep -> TypeRep Source

A special case of `mkTyConApp`, which applies the function type constructor to a pair of types.

splitTyConApp :: TypeRep -> (TyCon, [TypeRep]) Source

Splits a type constructor application. Note that if the type construcotr is polymorphic, this will not return the kinds that were used. See `splitPolyTyConApp` if you need all parts.

splitPolyTyConApp :: TypeRep -> (TyCon, [KindRep], [TypeRep]) Source

Split a type constructor application

funResultTy :: TypeRep -> TypeRep -> Maybe TypeRep Source

Applies a type to a function type. Returns: ``Just` u` if the first argument represents a function of type `t -> u` and the second argument represents a function of type `t`. Otherwise, returns `Nothing`.

typeRepArgs :: TypeRep -> [TypeRep] Source

Observe the argument types of a type representation

typeRepFingerprint :: TypeRep -> Fingerprint Source

Observe the `Fingerprint` of a type representation

Since: 4.8.0.0

rnfTypeRep :: TypeRep -> () Source

Helper to fully evaluate `TypeRep` for use as `NFData(rnf)` implementation

Since: 4.8.0.0

showsTypeRep :: TypeRep -> ShowS Source

typeRepKinds :: TypeRep -> [KindRep] Source

Observe the argument kinds of a type representation

typeSymbolTypeRep :: KnownSymbol a => Proxy# a -> TypeRep Source

Used to make ``Typeable` instance for things of kind Symbol

typeNatTypeRep :: KnownNat a => Proxy# a -> TypeRep Source

Used to make ``Typeable` instance for things of kind Nat