Safe Haskell	None
Language	Haskell2010

Wakame.Row

Contents

Keyed value type and function
Row type
Re-export from Data.SOP.NP

Synopsis

type FIELD = (Symbol, Type)
newtype V (p :: FIELD) = V {
- unV :: Snd p
}
type Keyed k v = V '(k, v)
keyed :: KnownSymbol k => v -> Keyed k v
type Row as = NP V (as :: [FIELD])
class IsRow (a :: Type) where
- type Of a :: [FIELD]
- fromRow :: Row (Of a) -> a
- toRow :: a -> Row (Of a)
data NP (a :: k -> Type) (b :: [k]) :: forall k. (k -> Type) -> [k] -> Type where
- Nil :: forall k (a :: k -> Type) (b :: [k]). NP a ([] :: [k])
- (:*) :: forall k (a :: k -> Type) (b :: [k]) (x :: k) (xs :: [k]). a x -> NP a xs -> NP a (x ': xs)

Documentation

type FIELD = (Symbol, Type) Source #

Kind of field

Keyed value type and function

newtype V (p :: FIELD) Source #

>>> V 3 :: V '("x", Int)
(x: 3)

Constructors

V
Fields unV :: Snd p

Instances

(IsString s, KnownSymbol key) => Keys' s (S1 (MetaSel (Nothing :: Maybe Symbol) su ss ds) (Rec0 (V ((,) key a))) :: k -> Type) Source #
Instance details Defined in Wakame.Keys Methods keys' :: S1 (MetaSel Nothing su ss ds) (Rec0 (V (key, a))) a0 -> [s] Source #
IsRow' (S1 (MetaSel (Nothing :: Maybe Symbol) su ss ds) (Rec0 (V ((,) key a))) :: k -> Type) Source #
Instance details Defined in Wakame.Generics Associated Types type Of' (S1 (MetaSel Nothing su ss ds) (Rec0 (V (key, a)))) :: [FIELD] Source # Methods fromRow' :: Row (Of' (S1 (MetaSel Nothing su ss ds) (Rec0 (V (key, a))))) -> S1 (MetaSel Nothing su ss ds) (Rec0 (V (key, a))) a0 Source # toRow' :: S1 (MetaSel Nothing su ss ds) (Rec0 (V (key, a))) a0 -> Row (Of' (S1 (MetaSel Nothing su ss ds) (Rec0 (V (key, a))))) Source #
(KnownSymbol (Fst p), Eq (Snd p)) => Eq (V p) Source #
Instance details Defined in Wakame.Row Methods (==) :: V p -> V p -> Bool # (/=) :: V p -> V p -> Bool #
(KnownSymbol (Fst p), Show (Snd p)) => Show (V p) Source #
Instance details Defined in Wakame.Row Methods showsPrec :: Int -> V p -> ShowS # show :: V p -> String # showList :: [V p] -> ShowS #
Generic (V ((,) k v)) Source #
Instance details Defined in Wakame.Row Associated Types type Rep (V (k, v)) :: Type -> Type # Methods from :: V (k, v) -> Rep (V (k, v)) x # to :: Rep (V (k, v)) x -> V (k, v) #
type Of' (S1 (MetaSel (Nothing :: Maybe Symbol) su ss ds) (Rec0 (V ((,) key a))) :: k -> Type) Source #
Instance details Defined in Wakame.Generics type Of' (S1 (MetaSel (Nothing :: Maybe Symbol) su ss ds) (Rec0 (V ((,) key a))) :: k -> Type) = (,) key a ': ([] :: [(Symbol, Type)])
type Rep (V ((,) k v)) Source #
Instance details Defined in Wakame.Row type Rep (V ((,) k v)) = S1 (MetaSel (Just k) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 v)

type Keyed k v = V '(k, v) Source #

keyed :: KnownSymbol k => v -> Keyed k v Source #

Row type

type Row as = NP V (as :: [FIELD]) Source #

class IsRow (a :: Type) where Source #

Typeclass of converting from/to Row

Associated Types

type Of a :: [FIELD] Source #

Methods

fromRow :: Row (Of a) -> a Source #

toRow :: a -> Row (Of a) Source #

Instances

(Generic a, IsRow' (Rep a)) => IsRow a Source #

Instance of IsRow over generic rep >>> :kind! Of Point Of Point :: [(Symbol, *)] = '[ '("x", Double), '("y", Double)]

>>> toRow' $ from $ Point 1.2 8.3
(x: 1.2) :* (y: 8.3) :* Nil
>>> to @Point $ fromRow' $ keyed @"x" 1.2 :* keyed @"y" 8.3 :* Nil
Point {x = 1.2, y = 8.3}

Instance details

Defined in Wakame.Generics

Associated Types

type Of a :: [FIELD] Source #

Methods

fromRow :: Row (Of a) -> a Source #

toRow :: a -> Row (Of a) Source #

Re-export from Data.SOP.NP

data NP (a :: k -> Type) (b :: [k]) :: forall k. (k -> Type) -> [k] -> Type where #

An n-ary product.

The product is parameterized by a type constructor f and indexed by a type-level list xs. The length of the list determines the number of elements in the product, and if the i-th element of the list is of type x, then the i-th element of the product is of type f x.

The constructor names are chosen to resemble the names of the list constructors.

Two common instantiations of f are the identity functor I and the constant functor K. For I, the product becomes a heterogeneous list, where the type-level list describes the types of its components. For K a, the product becomes a homogeneous list, where the contents of the type-level list are ignored, but its length still specifies the number of elements.

In the context of the SOP approach to generic programming, an n-ary product describes the structure of the arguments of a single data constructor.

Examples:

I 'x'    :* I True  :* Nil  ::  NP I       '[ Char, Bool ]
K 0      :* K 1     :* Nil  ::  NP (K Int) '[ Char, Bool ]
Just 'x' :* Nothing :* Nil  ::  NP Maybe   '[ Char, Bool ]

Constructors

Nil :: forall k (a :: k -> Type) (b :: [k]). NP a ([] :: [k])
(:*) :: forall k (a :: k -> Type) (b :: [k]) (x :: k) (xs :: [k]). a x -> NP a xs -> NP a (x ': xs) infixr 5

Instances

HTrans (NP :: (k1 -> Type) -> [k1] -> Type) (NP :: (k2 -> Type) -> [k2] -> Type)
Instance details Defined in Data.SOP.NP Methods htrans :: AllZipN (Prod NP) c xs ys => proxy c -> (forall (x :: k10) (y :: k20). c x y => f x -> g y) -> NP f xs -> NP g ys # hcoerce :: AllZipN (Prod NP) (LiftedCoercible f g) xs ys => NP f xs -> NP g ys #
HPure (NP :: (k -> Type) -> [k] -> Type)
Instance details Defined in Data.SOP.NP Methods hpure :: SListIN NP xs => (forall (a :: k0). f a) -> NP f xs # hcpure :: AllN NP c xs => proxy c -> (forall (a :: k0). c a => f a) -> NP f xs #
HAp (NP :: (k -> Type) -> [k] -> Type)
Instance details Defined in Data.SOP.NP Methods hap :: Prod NP (f -.-> g) xs -> NP f xs -> NP g xs #
HCollapse (NP :: (k -> Type) -> [k] -> Type)
Instance details Defined in Data.SOP.NP Methods hcollapse :: SListIN NP xs => NP (K a) xs -> CollapseTo NP a #
HTraverse_ (NP :: (k -> Type) -> [k] -> Type)
Instance details Defined in Data.SOP.NP Methods hctraverse_ :: (AllN NP c xs, Applicative g) => proxy c -> (forall (a :: k0). c a => f a -> g ()) -> NP f xs -> g () # htraverse_ :: (SListIN NP xs, Applicative g) => (forall (a :: k0). f a -> g ()) -> NP f xs -> g () #
HSequence (NP :: (k -> Type) -> [k] -> Type)
Instance details Defined in Data.SOP.NP Methods hsequence' :: (SListIN NP xs, Applicative f) => NP (f :.: g) xs -> f (NP g xs) # hctraverse' :: (AllN NP c xs, Applicative g) => proxy c -> (forall (a :: k0). c a => f a -> g (f' a)) -> NP f xs -> g (NP f' xs) # htraverse' :: (SListIN NP xs, Applicative g) => (forall (a :: k0). f a -> g (f' a)) -> NP f xs -> g (NP f' xs) #
All (Compose Eq f) xs => Eq (NP f xs)
Instance details Defined in Data.SOP.NP Methods (==) :: NP f xs -> NP f xs -> Bool # (/=) :: NP f xs -> NP f xs -> Bool #
(All (Compose Eq f) xs, All (Compose Ord f) xs) => Ord (NP f xs)
Instance details Defined in Data.SOP.NP Methods compare :: NP f xs -> NP f xs -> Ordering # (<) :: NP f xs -> NP f xs -> Bool # (<=) :: NP f xs -> NP f xs -> Bool # (>) :: NP f xs -> NP f xs -> Bool # (>=) :: NP f xs -> NP f xs -> Bool # max :: NP f xs -> NP f xs -> NP f xs # min :: NP f xs -> NP f xs -> NP f xs #
All (Compose Show f) xs => Show (NP f xs)
Instance details Defined in Data.SOP.NP Methods showsPrec :: Int -> NP f xs -> ShowS # show :: NP f xs -> String # showList :: [NP f xs] -> ShowS #
All (Compose Semigroup f) xs => Semigroup (NP f xs)	Since: sop-core-0.4.0.0
Instance details Defined in Data.SOP.NP Methods (<>) :: NP f xs -> NP f xs -> NP f xs # sconcat :: NonEmpty (NP f xs) -> NP f xs # stimes :: Integral b => b -> NP f xs -> NP f xs #
(All (Compose Monoid f) xs, All (Compose Semigroup f) xs) => Monoid (NP f xs)	Since: sop-core-0.4.0.0
Instance details Defined in Data.SOP.NP Methods mempty :: NP f xs # mappend :: NP f xs -> NP f xs -> NP f xs # mconcat :: [NP f xs] -> NP f xs #
All (Compose NFData f) xs => NFData (NP f xs)	Since: sop-core-0.2.5.0
Instance details Defined in Data.SOP.NP Methods rnf :: NP f xs -> () #
type Same (NP :: (k1 -> Type) -> [k1] -> Type)
Instance details Defined in Data.SOP.NP type Same (NP :: (k1 -> Type) -> [k1] -> Type) = (NP :: (k2 -> Type) -> [k2] -> Type)
type Prod (NP :: (k -> Type) -> [k] -> Type)
Instance details Defined in Data.SOP.NP type Prod (NP :: (k -> Type) -> [k] -> Type) = (NP :: (k -> Type) -> [k] -> Type)
type CollapseTo (NP :: (k -> Type) -> [k] -> Type) a
Instance details Defined in Data.SOP.NP type CollapseTo (NP :: (k -> Type) -> [k] -> Type) a = [a]
type SListIN (NP :: (k -> Type) -> [k] -> Type)
Instance details Defined in Data.SOP.NP type SListIN (NP :: (k -> Type) -> [k] -> Type) = (SListI :: [k] -> Constraint)
type AllN (NP :: (k -> Type) -> [k] -> Type) (c :: k -> Constraint)
Instance details Defined in Data.SOP.NP type AllN (NP :: (k -> Type) -> [k] -> Type) (c :: k -> Constraint) = All c
type AllZipN (NP :: (k -> Type) -> [k] -> Type) (c :: a -> b -> Constraint)
Instance details Defined in Data.SOP.NP type AllZipN (NP :: (k -> Type) -> [k] -> Type) (c :: a -> b -> Constraint) = AllZip c