| 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.
- 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 {}
- 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
- 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
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) |
A concrete representation of a (monomorphic) type. TypeRep
supports reasonably efficient equality.
Constructors
| TypeRep !Fingerprint TyCon [TypeRep] |
Constructors
| TyCon | |
Fields
| |
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
Arguments
| :: String | package name |
| -> String | module name |
| -> String | the name of the type constructor |
| -> TyCon | A unique |
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
typeRepTyCon :: TypeRep -> TyCon Source
Observe the type constructor of a type representation
The class Typeable allows a concrete representation of a type to
be calculated.
Instances
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
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