Copyright	(c) 2013 Ertugrul Soeylemez
License	BSD3
Maintainer	Ertugrul Soeylemez <es@ertes.de>
Safe Haskell	Safe-Inferred
Language	Haskell2010

Control.Wire.Core

Contents

Wires
Constructing wires
Data flow and dependencies
Utilities

Description

Synopsis

data Wire s e m a b where
- WArr :: (Either e a -> Either e b) -> Wire s e m a b
- WConst :: Either e b -> Wire s e m a b
- WGen :: (s -> Either e a -> m (Either e b, Wire s e m a b)) -> Wire s e m a b
- WId :: Wire s e m a a
- WPure :: (s -> Either e a -> (Either e b, Wire s e m a b)) -> Wire s e m a b
stepWire :: Monad m => Wire s e m a b -> s -> Either e a -> m (Either e b, Wire s e m a b)
mkConst :: Either e b -> Wire s e m a b
mkEmpty :: Monoid e => Wire s e m a b
mkGen :: (Monad m, Monoid s) => (s -> a -> m (Either e b, Wire s e m a b)) -> Wire s e m a b
mkGen_ :: Monad m => (a -> m (Either e b)) -> Wire s e m a b
mkGenN :: Monad m => (a -> m (Either e b, Wire s e m a b)) -> Wire s e m a b
mkId :: Wire s e m a a
mkPure :: Monoid s => (s -> a -> (Either e b, Wire s e m a b)) -> Wire s e m a b
mkPure_ :: (a -> Either e b) -> Wire s e m a b
mkPureN :: (a -> (Either e b, Wire s e m a b)) -> Wire s e m a b
mkSF :: Monoid s => (s -> a -> (b, Wire s e m a b)) -> Wire s e m a b
mkSF_ :: (a -> b) -> Wire s e m a b
mkSFN :: (a -> (b, Wire s e m a b)) -> Wire s e m a b
delay :: a -> Wire s e m a a
evalWith :: Strategy a -> Wire s e m a a
force :: Wire s e m a a
forceNF :: NFData a => Wire s e m a a
(&&&!) :: (a -> b) -> (a -> c) -> a -> (b, c)
(***!) :: (a -> c) -> (b -> d) -> (a, b) -> (c, d)
lstrict :: (a, b) -> (a, b)
mapWire :: (Monad m', Monad m) => (forall a. m' a -> m a) -> Wire s e m' a b -> Wire s e m a b

Wires

data Wire s e m a b where Source #

A wire is a signal function. It maps a reactive value to another reactive value.

Constructors

WArr :: (Either e a -> Either e b) -> Wire s e m a b
WConst :: Either e b -> Wire s e m a b
WGen :: (s -> Either e a -> m (Either e b, Wire s e m a b)) -> Wire s e m a b
WId :: Wire s e m a a
WPure :: (s -> Either e a -> (Either e b, Wire s e m a b)) -> Wire s e m a b

Instances

Instances details

Monad m => Category (Wire s e m :: Type -> Type -> Type) Source #
Instance details Defined in Control.Wire.Core Methods id :: forall (a :: k). Wire s e m a a Source # (.) :: forall (b :: k) (c :: k) (a :: k). Wire s e m b c -> Wire s e m a b -> Wire s e m a c Source #
Monad m => Arrow (Wire s e m) Source #
Instance details Defined in Control.Wire.Core Methods arr :: (b -> c) -> Wire s e m b c Source # first :: Wire s e m b c -> Wire s e m (b, d) (c, d) Source # second :: Wire s e m b c -> Wire s e m (d, b) (d, c) Source # (***) :: Wire s e m b c -> Wire s e m b' c' -> Wire s e m (b, b') (c, c') Source # (&&&) :: Wire s e m b c -> Wire s e m b c' -> Wire s e m b (c, c') Source #
(Monad m, Monoid e) => ArrowChoice (Wire s e m) Source #
Instance details Defined in Control.Wire.Core Methods left :: Wire s e m b c -> Wire s e m (Either b d) (Either c d) Source # right :: Wire s e m b c -> Wire s e m (Either d b) (Either d c) Source # (+++) :: Wire s e m b c -> Wire s e m b' c' -> Wire s e m (Either b b') (Either c c') Source # (\|\|\|) :: Wire s e m b d -> Wire s e m c d -> Wire s e m (Either b c) d Source #
MonadFix m => ArrowLoop (Wire s e m) Source #
Instance details Defined in Control.Wire.Core Methods loop :: Wire s e m (b, d) (c, d) -> Wire s e m b c Source #
(Monad m, Monoid e) => ArrowPlus (Wire s e m) Source #
Instance details Defined in Control.Wire.Core Methods (<+>) :: Wire s e m b c -> Wire s e m b c -> Wire s e m b c Source #
(Monad m, Monoid e) => ArrowZero (Wire s e m) Source #
Instance details Defined in Control.Wire.Core Methods zeroArrow :: Wire s e m b c Source #
(Monad m, Monoid e) => Choice (Wire s e m) Source #
Instance details Defined in Control.Wire.Core Methods left' :: Wire s e m a b -> Wire s e m (Either a c) (Either b c) right' :: Wire s e m a b -> Wire s e m (Either c a) (Either c b)
(Monad m, Monoid e) => Strong (Wire s e m) Source #
Instance details Defined in Control.Wire.Core Methods first' :: Wire s e m a b -> Wire s e m (a, c) (b, c) second' :: Wire s e m a b -> Wire s e m (c, a) (c, b)
Monad m => Profunctor (Wire s e m) Source #
Instance details Defined in Control.Wire.Core Methods dimap :: (a -> b) -> (c -> d) -> Wire s e m b c -> Wire s e m a d lmap :: (a -> b) -> Wire s e m b c -> Wire s e m a c rmap :: (b -> c) -> Wire s e m a b -> Wire s e m a c (#.) :: forall a b c q. Coercible c b => q b c -> Wire s e m a b -> Wire s e m a c (.#) :: forall a b c q. Coercible b a => Wire s e m b c -> q a b -> Wire s e m a c
(Monad m, Monoid e) => Alternative (Wire s e m a) Source #
Instance details Defined in Control.Wire.Core Methods empty :: Wire s e m a a0 Source # (<\|>) :: Wire s e m a a0 -> Wire s e m a a0 -> Wire s e m a a0 Source # some :: Wire s e m a a0 -> Wire s e m a [a0] Source # many :: Wire s e m a a0 -> Wire s e m a [a0] Source #
Monad m => Applicative (Wire s e m a) Source #
Instance details Defined in Control.Wire.Core Methods pure :: a0 -> Wire s e m a a0 Source # (<>) :: Wire s e m a (a0 -> b) -> Wire s e m a a0 -> Wire s e m a b Source # liftA2 :: (a0 -> b -> c) -> Wire s e m a a0 -> Wire s e m a b -> Wire s e m a c Source # (>) :: Wire s e m a a0 -> Wire s e m a b -> Wire s e m a b Source # (<*) :: Wire s e m a a0 -> Wire s e m a b -> Wire s e m a a0 Source #
Monad m => Functor (Wire s e m a) Source #
Instance details Defined in Control.Wire.Core Methods fmap :: (a0 -> b) -> Wire s e m a a0 -> Wire s e m a b Source # (<$) :: a0 -> Wire s e m a b -> Wire s e m a a0 Source #
(Monad m, IsString b) => IsString (Wire s e m a b) Source #
Instance details Defined in Control.Wire.Core Methods fromString :: String -> Wire s e m a b Source #
(Monad m, Monoid b) => Monoid (Wire s e m a b) Source #
Instance details Defined in Control.Wire.Core Methods mempty :: Wire s e m a b Source # mappend :: Wire s e m a b -> Wire s e m a b -> Wire s e m a b Source # mconcat :: [Wire s e m a b] -> Wire s e m a b Source #
(Monad m, Semigroup b) => Semigroup (Wire s e m a b) Source #
Instance details Defined in Control.Wire.Core Methods (<>) :: Wire s e m a b -> Wire s e m a b -> Wire s e m a b Source # sconcat :: NonEmpty (Wire s e m a b) -> Wire s e m a b Source # stimes :: Integral b0 => b0 -> Wire s e m a b -> Wire s e m a b Source #
(Monad m, Floating b) => Floating (Wire s e m a b) Source #
Instance details Defined in Control.Wire.Core Methods pi :: Wire s e m a b Source # exp :: Wire s e m a b -> Wire s e m a b Source # log :: Wire s e m a b -> Wire s e m a b Source # sqrt :: Wire s e m a b -> Wire s e m a b Source # (**) :: Wire s e m a b -> Wire s e m a b -> Wire s e m a b Source # logBase :: Wire s e m a b -> Wire s e m a b -> Wire s e m a b Source # sin :: Wire s e m a b -> Wire s e m a b Source # cos :: Wire s e m a b -> Wire s e m a b Source # tan :: Wire s e m a b -> Wire s e m a b Source # asin :: Wire s e m a b -> Wire s e m a b Source # acos :: Wire s e m a b -> Wire s e m a b Source # atan :: Wire s e m a b -> Wire s e m a b Source # sinh :: Wire s e m a b -> Wire s e m a b Source # cosh :: Wire s e m a b -> Wire s e m a b Source # tanh :: Wire s e m a b -> Wire s e m a b Source # asinh :: Wire s e m a b -> Wire s e m a b Source # acosh :: Wire s e m a b -> Wire s e m a b Source # atanh :: Wire s e m a b -> Wire s e m a b Source # log1p :: Wire s e m a b -> Wire s e m a b Source # expm1 :: Wire s e m a b -> Wire s e m a b Source # log1pexp :: Wire s e m a b -> Wire s e m a b Source # log1mexp :: Wire s e m a b -> Wire s e m a b Source #
(Monad m, Num b) => Num (Wire s e m a b) Source #
Instance details Defined in Control.Wire.Core Methods (+) :: Wire s e m a b -> Wire s e m a b -> Wire s e m a b Source # (-) :: Wire s e m a b -> Wire s e m a b -> Wire s e m a b Source # (*) :: Wire s e m a b -> Wire s e m a b -> Wire s e m a b Source # negate :: Wire s e m a b -> Wire s e m a b Source # abs :: Wire s e m a b -> Wire s e m a b Source # signum :: Wire s e m a b -> Wire s e m a b Source # fromInteger :: Integer -> Wire s e m a b Source #
(Monad m, Fractional b) => Fractional (Wire s e m a b) Source #
Instance details Defined in Control.Wire.Core Methods (/) :: Wire s e m a b -> Wire s e m a b -> Wire s e m a b Source # recip :: Wire s e m a b -> Wire s e m a b Source # fromRational :: Rational -> Wire s e m a b Source #

stepWire :: Monad m => Wire s e m a b -> s -> Either e a -> m (Either e b, Wire s e m a b) Source #

Perform one step of the given wire.

Constructing wires

mkConst :: Either e b -> Wire s e m a b Source #

Construct a stateless wire from the given signal mapping function.

mkEmpty :: Monoid e => Wire s e m a b Source #

Construct the empty wire, which inhibits forever.

mkGen :: (Monad m, Monoid s) => (s -> a -> m (Either e b, Wire s e m a b)) -> Wire s e m a b Source #

Construct a stateful wire from the given transition function.

mkGen_ :: Monad m => (a -> m (Either e b)) -> Wire s e m a b Source #

Construct a stateless wire from the given transition function.

mkGenN :: Monad m => (a -> m (Either e b, Wire s e m a b)) -> Wire s e m a b Source #

Construct a stateful wire from the given transition function.

mkId :: Wire s e m a a Source #

Construct the identity wire.

mkPure :: Monoid s => (s -> a -> (Either e b, Wire s e m a b)) -> Wire s e m a b Source #

Construct a pure stateful wire from the given transition function.

mkPure_ :: (a -> Either e b) -> Wire s e m a b Source #

Construct a pure stateless wire from the given transition function.

mkPureN :: (a -> (Either e b, Wire s e m a b)) -> Wire s e m a b Source #

Construct a pure stateful wire from the given transition function.

mkSF :: Monoid s => (s -> a -> (b, Wire s e m a b)) -> Wire s e m a b Source #

Construct a pure stateful wire from the given signal function.

mkSF_ :: (a -> b) -> Wire s e m a b Source #

Construct a pure stateless wire from the given function.

mkSFN :: (a -> (b, Wire s e m a b)) -> Wire s e m a b Source #

Construct a pure stateful wire from the given signal function.

Data flow and dependencies

delay :: a -> Wire s e m a a Source #

This wire delays its input signal by the smallest possible (semantically infinitesimal) amount of time. You can use it when you want to use feedback (ArrowLoop): If the user of the feedback depends on now, delay the value before feeding it back. The argument value is the replacement signal at the beginning.