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

Data.Conduit.Attoparsec

Contents

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 Source #

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) Source #

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 () Source #

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 () Source #

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

The context and message from a Fail value.

Constructors

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

Instances

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

Constructors

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

Instances

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

Constructors

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

Instances

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

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

Minimal complete definition

parseA, feedA, empty, isNull, getLinesCols, stripFromEnd

Instances

AttoparsecInput ByteString Source #
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 Source #
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