Safe Haskell	None
Language	Haskell2010

Foundation.Conduit

Synopsis

Documentation

data Conduit input output monad result Source #

A component of a conduit pipeline, which takes a stream of input, produces a stream of output, performs actions in the underlying monad, and produces a value of result when no more output data is available.

Instances

MonadTrans (Conduit i o) Source #
Methods lift :: AMPMonad m => m a -> Conduit i o m a Source #
Monad (Conduit i o m) Source #
Methods (>>=) :: Conduit i o m a -> (a -> Conduit i o m b) -> Conduit i o m b # (>>) :: Conduit i o m a -> Conduit i o m b -> Conduit i o m b # return :: a -> Conduit i o m a # fail :: String -> Conduit i o m a #
Functor (Conduit i o m) Source #
Methods fmap :: (a -> b) -> Conduit i o m a -> Conduit i o m b # (<$) :: a -> Conduit i o m b -> Conduit i o m a #
Applicative (Conduit i o m) Source #
Methods pure :: a -> Conduit i o m a # (<>) :: Conduit i o m (a -> b) -> Conduit i o m a -> Conduit i o m b # liftA2 :: (a -> b -> c) -> Conduit i o m a -> Conduit i o m b -> Conduit i o m c # (>) :: Conduit i o m a -> Conduit i o m b -> Conduit i o m b # (<*) :: Conduit i o m a -> Conduit i o m b -> Conduit i o m a #
MonadIO m => MonadIO (Conduit i o m) Source #
Methods liftIO :: IO a -> Conduit i o m a #
MonadFailure m => MonadFailure (Conduit i o m) Source #
Associated Types type Failure (Conduit i o m :: * -> ) :: # Methods mFail :: Failure (Conduit i o m) -> Conduit i o m () #
MonadCatch m => MonadCatch (Conduit i o m) Source #
Methods catch :: Exception e => Conduit i o m a -> (e -> Conduit i o m a) -> Conduit i o m a Source #
MonadThrow m => MonadThrow (Conduit i o m) Source #
Methods throw :: Exception e => e -> Conduit i o m a Source #
type Failure (Conduit i o m) Source #
type Failure (Conduit i o m) = Failure m

data ResourceT m a Source #

Instances

MonadTrans ResourceT Source #
Methods lift :: AMPMonad m => m a -> ResourceT m a Source #
Monad m => Monad (ResourceT m) Source #
Methods (>>=) :: ResourceT m a -> (a -> ResourceT m b) -> ResourceT m b # (>>) :: ResourceT m a -> ResourceT m b -> ResourceT m b # return :: a -> ResourceT m a # fail :: String -> ResourceT m a #
Functor m => Functor (ResourceT m) Source #
Methods fmap :: (a -> b) -> ResourceT m a -> ResourceT m b # (<$) :: a -> ResourceT m b -> ResourceT m a #
Applicative m => Applicative (ResourceT m) Source #
Methods pure :: a -> ResourceT m a # (<>) :: ResourceT m (a -> b) -> ResourceT m a -> ResourceT m b # liftA2 :: (a -> b -> c) -> ResourceT m a -> ResourceT m b -> ResourceT m c # (>) :: ResourceT m a -> ResourceT m b -> ResourceT m b # (<*) :: ResourceT m a -> ResourceT m b -> ResourceT m a #
MonadIO m => MonadIO (ResourceT m) Source #
Methods liftIO :: IO a -> ResourceT m a #
MonadBracket m => MonadBracket (ResourceT m) Source #
Methods generalBracket :: ResourceT m a -> (a -> b -> ResourceT m ignored1) -> (a -> SomeException -> ResourceT m ignored2) -> (a -> ResourceT m b) -> ResourceT m b Source #
MonadCatch m => MonadCatch (ResourceT m) Source #
Methods catch :: Exception e => ResourceT m a -> (e -> ResourceT m a) -> ResourceT m a Source #
MonadThrow m => MonadThrow (ResourceT m) Source #
Methods throw :: Exception e => e -> ResourceT m a Source #

newtype ZipSink i m r Source #

Constructors

ZipSink
Fields getZipSink :: Conduit i () m r

Instances

Monad m => Functor (ZipSink i m) Source #
Methods fmap :: (a -> b) -> ZipSink i m a -> ZipSink i m b # (<$) :: a -> ZipSink i m b -> ZipSink i m a #
Monad m => Applicative (ZipSink i m) Source #
Methods pure :: a -> ZipSink i m a # (<>) :: ZipSink i m (a -> b) -> ZipSink i m a -> ZipSink i m b # liftA2 :: (a -> b -> c) -> ZipSink i m a -> ZipSink i m b -> ZipSink i m c # (>) :: ZipSink i m a -> ZipSink i m b -> ZipSink i m b # (<*) :: ZipSink i m a -> ZipSink i m b -> ZipSink i m a #

await :: Conduit i o m (Maybe i) Source #

Await for a value from upstream.

awaitForever :: (input -> Conduit input output monad b) -> Conduit input output monad () Source #

yield :: Monad m => o -> Conduit i o m () Source #

Send a value downstream.

yields :: (Monad m, Foldable os, Element os ~ o) => os -> Conduit i o m () Source #

Send values downstream.

yieldOr Source #

Arguments

:: o
-> m ()	finalizer
-> Conduit i o m ()

Same as yield, but additionally takes a finalizer to be run if the downstream component terminates.

leftover :: i -> Conduit i o m () Source #

Provide leftover input to be consumed by the next component in the current monadic binding.

runConduit :: Monad m => Conduit () () m r -> m r Source #

Run a conduit pipeline to completion.

runConduitPure :: Conduit () () Identity r -> r Source #

Run a pure conduit pipeline to completion.

runConduitRes :: (MonadBracket m, MonadIO m) => Conduit () () (ResourceT m) r -> m r Source #

Run a conduit pipeline in a ResourceT context for acquiring resources.

fuse :: Monad m => Conduit a b m () -> Conduit b c m r -> Conduit a c m r Source #

Send the output of the first Conduit component to the second Conduit component.

(.|) :: Monad m => Conduit a b m () -> Conduit b c m r -> Conduit a c m r infixr 2 Source #

Operator version of fuse.

sourceFile :: MonadResource m => FilePath -> Conduit i (UArray Word8) m () Source #

sourceHandle :: MonadIO m => Handle -> Conduit i (UArray Word8) m () Source #

sinkFile :: MonadResource m => FilePath -> Conduit (UArray Word8) i m () Source #

sinkHandle :: MonadIO m => Handle -> Conduit (UArray Word8) o m () Source #

sinkList :: Monad m => Conduit i o m [i] Source #

bracketConduit :: MonadResource m => IO a -> (a -> IO b) -> (a -> Conduit i o m r) -> Conduit i o m r Source #