Data.Typeable.Internal

base-4.7.0.1: Basic libraries

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

Data.Typeable.Internal

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 TypeRep = TypeRep !Fingerprint TyCon [TypeRep]
- 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 TyCon = TyCon {
  - tyConHash :: !Fingerprint
  - tyConPackage :: String
  - tyConModule :: String
  - tyConName :: String
  }
- typeRep :: forall proxy a. Typeable a => proxy a -> TypeRep
- mkTyCon :: Word# -> Word# -> String -> String -> String -> TyCon
- mkTyCon3 :: String -> String -> String -> TyCon
- mkTyConApp :: TyCon -> [TypeRep] -> TypeRep
- mkAppTy :: TypeRep -> TypeRep -> TypeRep
- typeRepTyCon :: TypeRep -> TyCon
- class Typeable a where
  - typeRep# :: Proxy# a -> TypeRep
- mkFunTy :: TypeRep -> TypeRep -> TypeRep
- splitTyConApp :: TypeRep -> (TyCon, [TypeRep])
- funResultTy :: TypeRep -> TypeRep -> Maybe TypeRep
- typeRepArgs :: TypeRep -> [TypeRep]
- showsTypeRep :: TypeRep -> ShowS
- tyConString :: TyCon -> String
- listTc :: TyCon
- funTc :: TyCon

# Documentation

data Proxy t Source

A concrete, poly-kinded proxy type

Constructors

Proxy |

Instances

Monad (Proxy *) |
Functor (Proxy *) |
Applicative (Proxy *) |
Foldable (Proxy *) |
Traversable (Proxy *) |
Bounded (Proxy k s) |
Enum (Proxy k s) |
Eq (Proxy k s) |
Data t => Data (Proxy * t) |
Ord (Proxy k s) |
Read (Proxy k s) |
Show (Proxy k s) |
Ix (Proxy k s) |
Generic (Proxy * t) |
Monoid (Proxy * s) |
Typeable (k -> *) (Proxy k) |
type Rep (Proxy k t) |

data TypeRep Source

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

Constructors

TypeRep !Fingerprint TyCon [TypeRep] |

Instances

Eq TypeRep |
Ord TypeRep |
Show TypeRep |
Typeable * TypeRep |

data Fingerprint Source

Constructors

Fingerprint !Word64 !Word64 |

Instances

Eq Fingerprint |
Ord Fingerprint |
Show Fingerprint |
Storable Fingerprint |

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`

data TyCon Source

An abstract representation of a type constructor. `TyCon` objects can be built using `mkTyCon`.

Constructors

TyCon |
Fields tyConHash :: !Fingerprint tyConPackage :: String Since: 4.5.0.0 tyConModule :: String Since: 4.5.0.0 tyConName :: String Since: 4.5.0.0

Instances

Eq TyCon |
Ord TyCon |
Show TyCon |
Typeable * TyCon |

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

mkTyCon :: Word# -> Word# -> String -> String -> String -> TyCon Source

mkTyCon3 Source

Arguments

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

Builds a `TyCon` object representing a type constructor. An implementation of Data.Typeable should ensure that the following holds:

     A==A' ^ B==B' ^ C==C' ==> mkTyCon A B C == mkTyCon A' B' C'

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

Applies a type constructor to a sequence of 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.

Methods

typeRep# :: Proxy# a -> TypeRep Source

Instances

Typeable * Bool |
Typeable * Char |
Typeable * Double |
Typeable * Float |
Typeable * Int |
Typeable * Int8 |
Typeable * Int16 |
Typeable * Int32 |
Typeable * Int64 |
Typeable * Integer |
Typeable * Ordering |
Typeable * RealWorld |
Typeable * Word |
Typeable * Word8 |
Typeable * Word16 |
Typeable * Word32 |
Typeable * Word64 |
Typeable * () |
Typeable * SomeException |
Typeable * TyCon |
Typeable * TypeRep |
Typeable * ArithException |
Typeable * ErrorCall |
Typeable * IOException |
Typeable * Dynamic |
Typeable * CUIntMax |
Typeable * CIntMax |
Typeable * CUIntPtr |
Typeable * CIntPtr |
Typeable * CSUSeconds |
Typeable * CUSeconds |
Typeable * CTime |
Typeable * CClock |
Typeable * CSigAtomic |
Typeable * CWchar |
Typeable * CSize |
Typeable * CPtrdiff |
Typeable * CDouble |
Typeable * CFloat |
Typeable * CULLong |
Typeable * CLLong |
Typeable * CULong |
Typeable * CLong |
Typeable * CUInt |
Typeable * CInt |
Typeable * CUShort |
Typeable * CShort |
Typeable * CUChar |
Typeable * CSChar |
Typeable * CChar |
Typeable * IntPtr |
Typeable * WordPtr |
Typeable * Handle |
Typeable * ExitCode |
Typeable * ArrayException |
Typeable * AsyncException |
Typeable * SomeAsyncException |
Typeable * AssertionFailed |
Typeable * Deadlock |
Typeable * BlockedIndefinitelyOnSTM |
Typeable * BlockedIndefinitelyOnMVar |
Typeable * Fd |
Typeable * CRLim |
Typeable * CTcflag |
Typeable * CSpeed |
Typeable * CCc |
Typeable * CUid |
Typeable * CNlink |
Typeable * CGid |
Typeable * CSsize |
Typeable * CPid |
Typeable * COff |
Typeable * CMode |
Typeable * CIno |
Typeable * CDev |
Typeable * ThreadId |
Typeable * NestedAtomically |
Typeable * NonTermination |
Typeable * NoMethodError |
Typeable * RecUpdError |
Typeable * RecConError |
Typeable * RecSelError |
Typeable * PatternMatchFail |
Typeable * QSemN |
Typeable * Version |
Typeable * E12 |
Typeable * E9 |
Typeable * E6 |
Typeable * E3 |
Typeable * E2 |
Typeable * E1 |
Typeable * E0 |
Typeable * Unique |
Typeable * SpecConstrAnnotation |
(Typeable (k1 -> k) s, Typeable k1 a) => Typeable k (s a) | Kind-polymorphic Typeable instance for type application
Typeable ((* -> *) -> Constraint) Alternative |
Typeable ((* -> *) -> Constraint) Applicative |
Typeable (* -> * -> * -> * -> * -> * -> * -> *) (,,,,,,) |
Typeable (* -> * -> * -> * -> * -> * -> *) (,,,,,) |
Typeable (* -> * -> * -> * -> * -> *) (,,,,) |
Typeable (* -> * -> * -> * -> *) (,,,) |
Typeable (* -> * -> * -> *) (,,) |
Typeable (* -> * -> *) (->) |
Typeable (* -> * -> *) Either |
Typeable (* -> * -> *) (,) |
Typeable (* -> * -> *) ST |
Typeable (* -> * -> *) STRef |
Typeable (* -> *) [] |
Typeable (* -> *) Ratio |
Typeable (* -> *) StablePtr |
Typeable (* -> *) IO |
Typeable (* -> *) Ptr |
Typeable (* -> *) FunPtr |
Typeable (* -> *) Maybe |
Typeable (* -> *) IORef |
Typeable (* -> *) MVar |
Typeable (* -> *) Weak |
Typeable (* -> *) ForeignPtr |
Typeable (* -> *) TVar |
Typeable (* -> *) STM |
Typeable (* -> *) Chan |
Typeable (* -> *) Complex |
Typeable (* -> *) Fixed |
Typeable (* -> *) StableName |
Typeable (* -> Constraint) Monoid |
Typeable (k -> k -> *) (Coercion k) |
Typeable (k -> k -> *) ((:~:) k) |
Typeable (k -> *) (Proxy k) |

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

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

showsTypeRep :: TypeRep -> ShowS Source

tyConString :: TyCon -> String Source

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

Observe string encoding of a type representation

listTc :: TyCon Source

funTc :: TyCon Source