RepLib-0.4.0: Generic programming library with representation types

Portabilitynon-portable
Stabilityexperimental
Maintainersweirich@cis.upenn.edu

Generics.RepLib.R

Description

Basic data structure and class for representation types

Synopsis

Documentation

data R a whereSource

A value of type R a is a representation of a type a.

Constructors

Int :: R Int 
Char :: R Char 
Integer :: R Integer 
Float :: R Float 
Double :: R Double 
Rational :: R Rational 
IOError :: R IOError 
IO :: Rep a => R a -> R (IO a) 
Arrow :: (Rep a, Rep b) => R a -> R b -> R (a -> b) 
Data :: DT -> [Con R a] -> R a 
Abstract :: DT -> R a 

Instances

Eq (R a) 
Ord (R a) 
Show (R a) 
Show (MTup R l) 

data Con r a Source

Representation of a data constructor includes an embedding between the datatype and a list of other types as well as the representation of that list of other types.

Constructors

forall l . Con (Emb l a) (MTup r l) 

data Emb l a Source

An embedding between a list of types l and a datatype a, based on a particular data constructor. The to function is a wrapper for the constructor, the from function pattern matches on the constructor.

Constructors

Emb 

Fields

to :: l -> a
 
from :: a -> Maybe l
 
labels :: Maybe [String]
 
name :: String
 
fixity :: Fixity
 

data Fixity Source

Constructors

Nonfix 
Infix 

Fields

prec :: Int
 
Infixl 

Fields

prec :: Int
 
Infixr 

Fields

prec :: Int
 

data DT Source

Information about a datatype, including its fully qualified name and representation of its type arguments.

Constructors

forall l . DT String (MTup R l) 

Instances

data Nil Source

An empty list of types

Constructors

Nil 

data a :*: l Source

Cons for a list of types

Constructors

a :*: l 

data Ex f Source

Constructors

forall a . Rep a => Ex (f a) 

data MTup r l whereSource

A heterogeneous list

Constructors

MNil :: MTup r Nil 
:+: :: Rep a => r a -> MTup r l -> MTup r (a :*: l) 
MEx :: Rep a => MTup r (f a) -> MTup r (Ex f) 

Instances

Show (MTup R l) 

class Rep a whereSource

A Class of representatble types

Methods

rep :: R aSource

Instances

Rep Bool 
Rep Char 
Rep Double 
Rep Float 
Rep Int 
Rep Integer 
Rep Ordering 
Rep Rational 
Rep () 
Rep IOError 
Rep a => Rep [a] 
Rep a => Rep (IO a) 
Rep a[a1zn] => Rep (Maybe a[a1zn]) 
(Rep a, Rep b) => Rep (a -> b) 
(Rep a[a9NH], Rep b[a9NG]) => Rep (Either a[a9NH] b[a9NG]) 
(Rep a, Rep b) => Rep (a, b) 
(Rep a[12], Rep b[13], Rep c[14]) => Rep (a[12], b[13], c[14]) 
(Rep a[12], Rep b[13], Rep c[14], Rep d[15]) => Rep (a[12], b[13], c[14], d[15]) 
(Rep a[12], Rep b[13], Rep c[14], Rep d[15], Rep e[16]) => Rep (a[12], b[13], c[14], d[15], e[16]) 
(Rep a[12], Rep b[13], Rep c[14], Rep d[15], Rep e[16], Rep f[17]) => Rep (a[12], b[13], c[14], d[15], e[16], f[17]) 
(Rep a[12], Rep b[13], Rep c[14], Rep d[15], Rep e[16], Rep f[17], Rep g[18]) => Rep (a[12], b[13], c[14], d[15], e[16], f[17], g[18]) 

rTup2 :: forall a b. (Rep a, Rep b) => R (a, b)Source

rPairEmb :: Emb (a :*: (b :*: Nil)) (a, b)Source

rList :: forall a. Rep a => R [a]Source

rConsEmb :: Emb (a :*: ([a] :*: Nil)) [a]Source