Copyright	2011 Michael Snoyman 2010 John Millikin
License	MIT
Safe Haskell	None
Language	Haskell98

Data.Conduit.Attoparsec

Contents

Sink
Conduit
Types
Classes

Description

Consume attoparsec parsers via conduit.

This code was taken from attoparsec-enumerator and adapted for conduits.

Synopsis

sinkParser :: (AttoparsecInput a, MonadThrow m) => Parser a b -> ConduitT a o m b
sinkParserEither :: (AttoparsecInput a, Monad m) => Parser a b -> ConduitT a o m (Either ParseError b)
conduitParser :: (AttoparsecInput a, MonadThrow m) => Parser a b -> ConduitT a (PositionRange, b) m ()
conduitParserEither :: (Monad m, AttoparsecInput a) => Parser a b -> ConduitT a (Either ParseError (PositionRange, b)) m ()
data ParseError
- = ParseError {
  - errorContexts :: [String]
  - errorMessage :: String
  - errorPosition :: Position
  }
- | DivergentParser
data Position = Position {
- posLine :: !Int
- posCol :: !Int
- posOffset :: !Int
}
data PositionRange = PositionRange {
- posRangeStart :: !Position
- posRangeEnd :: !Position
}
class AttoparsecInput a

Sink

sinkParser :: (AttoparsecInput a, MonadThrow m) => Parser a b -> ConduitT a o m b #

Convert an Attoparsec Parser into a Sink. The parser will be streamed bytes until it returns Done or Fail.

If parsing fails, a ParseError will be thrown with throwM.

Since 0.5.0

sinkParserEither :: (AttoparsecInput a, Monad m) => Parser a b -> ConduitT a o m (Either ParseError b) #

Same as sinkParser, but we return an Either type instead of raising an exception.

Since 1.1.5

Conduit

conduitParser :: (AttoparsecInput a, MonadThrow m) => Parser a b -> ConduitT a (PositionRange, b) m () #

Consume a stream of parsed tokens, returning both the token and the position it appears at. This function will raise a ParseError on bad input.

Since 0.5.0

conduitParserEither :: (Monad m, AttoparsecInput a) => Parser a b -> ConduitT a (Either ParseError (PositionRange, b)) m () #

Same as conduitParser, but we return an Either type instead of raising an exception.

Types

data ParseError #

The context and message from a Fail value.

Constructors

ParseError
Fields errorContexts :: [String] errorMessage :: String errorPosition :: Position
DivergentParser

Instances

Instances details

Show ParseError #
Instance details Defined in Data.Conduit.Attoparsec Methods showsPrec :: Int -> ParseError -> ShowS # show :: ParseError -> String # showList :: [ParseError] -> ShowS #
Exception ParseError #
Instance details Defined in Data.Conduit.Attoparsec Methods toException :: ParseError -> SomeException # fromException :: SomeException -> Maybe ParseError # displayException :: ParseError -> String #

data Position #

Constructors

Position
Fields posLine :: !Int posCol :: !Int posOffset :: !Int Since: 1.2.0

Instances

Instances details

Eq Position #
Instance details Defined in Data.Conduit.Attoparsec Methods (==) :: Position -> Position -> Bool # (/=) :: Position -> Position -> Bool #
Ord Position #
Instance details Defined in Data.Conduit.Attoparsec Methods compare :: Position -> Position -> Ordering # (<) :: Position -> Position -> Bool # (<=) :: Position -> Position -> Bool # (>) :: Position -> Position -> Bool # (>=) :: Position -> Position -> Bool # max :: Position -> Position -> Position # min :: Position -> Position -> Position #
Show Position #
Instance details Defined in Data.Conduit.Attoparsec Methods showsPrec :: Int -> Position -> ShowS # show :: Position -> String # showList :: [Position] -> ShowS #

data PositionRange #

Constructors

PositionRange
Fields posRangeStart :: !Position posRangeEnd :: !Position

Instances

Instances details

Eq PositionRange #
Instance details Defined in Data.Conduit.Attoparsec Methods (==) :: PositionRange -> PositionRange -> Bool # (/=) :: PositionRange -> PositionRange -> Bool #
Ord PositionRange #
Instance details Defined in Data.Conduit.Attoparsec Methods compare :: PositionRange -> PositionRange -> Ordering # (<) :: PositionRange -> PositionRange -> Bool # (<=) :: PositionRange -> PositionRange -> Bool # (>) :: PositionRange -> PositionRange -> Bool # (>=) :: PositionRange -> PositionRange -> Bool # max :: PositionRange -> PositionRange -> PositionRange # min :: PositionRange -> PositionRange -> PositionRange #
Show PositionRange #
Instance details Defined in Data.Conduit.Attoparsec Methods showsPrec :: Int -> PositionRange -> ShowS # show :: PositionRange -> String # showList :: [PositionRange] -> ShowS #

Classes

class AttoparsecInput a #

A class of types which may be consumed by an Attoparsec parser.

Minimal complete definition

parseA, feedA, empty, isNull, getLinesCols, stripFromEnd

Instances

Instances details

AttoparsecInput ByteString #
Instance details Defined in Data.Conduit.Attoparsec Methods parseA :: Parser ByteString b -> ByteString -> IResult ByteString b feedA :: IResult ByteString b -> ByteString -> IResult ByteString b empty :: ByteString isNull :: ByteString -> Bool getLinesCols :: ByteString -> Position stripFromEnd :: ByteString -> ByteString -> ByteString
AttoparsecInput Text #
Instance details Defined in Data.Conduit.Attoparsec Methods parseA :: Parser Text b -> Text -> IResult Text b feedA :: IResult Text b -> Text -> IResult Text b empty :: Text isNull :: Text -> Bool getLinesCols :: Text -> Position stripFromEnd :: Text -> Text -> Text