Data.ByteArray.Parse

A very simple bytearray parser related to Parsec and Attoparsec

Simple example:

> parse ((,,) <$> take 2 <*> byte 0x20 <*> (bytes "abc" *> anyByte)) "xx abctest"
ParseOK "est" ("xx", 116)

Documentation

data Parser byteArray a

Simple ByteString parser structure

Instances

Monad (Parser byteArray)

Methods

(>>=) :: Parser byteArray a -> (a -> Parser byteArray b) -> Parser byteArray b

(>>) :: Parser byteArray a -> Parser byteArray b -> Parser byteArray b

return :: a -> Parser byteArray a

fail :: String -> Parser byteArray a

Functor (Parser byteArray)

Methods

fmap :: (a -> b) -> Parser byteArray a -> Parser byteArray b

(<$) :: a -> Parser byteArray b -> Parser byteArray a

Applicative (Parser byteArray)

Methods

pure :: a -> Parser byteArray a

(<*>) :: Parser byteArray (a -> b) -> Parser byteArray a -> Parser byteArray b

(*>) :: Parser byteArray a -> Parser byteArray b -> Parser byteArray b

(<*) :: Parser byteArray a -> Parser byteArray b -> Parser byteArray a

Alternative (Parser byteArray)

Methods

empty :: Parser byteArray a

(<|>) :: Parser byteArray a -> Parser byteArray a -> Parser byteArray a

some :: Parser byteArray a -> Parser byteArray [a]

many :: Parser byteArray a -> Parser byteArray [a]

MonadPlus (Parser byteArray)

Methods

mzero :: Parser byteArray a

mplus :: Parser byteArray a -> Parser byteArray a -> Parser byteArray a

data Result byteArray a

Simple parsing result, that represent respectively:

• failure: with the error message
• continuation: that need for more input data
• success: the remaining unparsed data and the parser value

Constructors

ParseFail String

ParseMore (Maybe byteArray -> Result byteArray a)

ParseOK byteArray a

Instances

(Show ba, Show a) => Show (Result ba a)

Methods

showsPrec :: Int -> Result ba a -> ShowS

show :: Result ba a -> String

showList :: [Result ba a] -> ShowS

run the Parser

parse :: ByteArrayAccess byteArray => Parser byteArray a -> byteArray -> Result byteArray a

Run a Parser on a ByteString and return a Result

parseFeed :: (ByteArrayAccess byteArray, Monad m) => m (Maybe byteArray) -> Parser byteArray a -> byteArray -> m (Result byteArray a)

Run a parser on an @initial byteArray.

If the Parser need more data than available, the @feeder function is automatically called and fed to the More continuation.

Parser methods

hasMore :: ByteArray byteArray => Parser byteArray Bool

byte :: ByteArray byteArray => Word8 -> Parser byteArray ()

Parse a specific byte at current position

if the byte is different than the expected on, this parser will raise a failure.

anyByte :: ByteArray byteArray => Parser byteArray Word8

Get the next byte from the parser

bytes :: (Show ba, Eq ba, ByteArray ba) => ba -> Parser ba ()

Parse a sequence of bytes from current position

if the following bytes don't match the expected bytestring completely, the parser will raise a failure

take :: ByteArray byteArray => Int -> Parser byteArray byteArray

Take @n bytes from the current position in the stream

takeWhile :: ByteArray byteArray => (Word8 -> Bool) -> Parser byteArray byteArray

Take bytes while the @predicate hold from the current position in the stream

takeAll :: ByteArray byteArray => Parser byteArray byteArray

Take the remaining bytes from the current position in the stream

skip :: ByteArray byteArray => Int -> Parser byteArray ()

Skip @n bytes from the current position in the stream

skipWhile :: ByteArray byteArray => (Word8 -> Bool) -> Parser byteArray ()

Skip bytes while the @predicate hold from the current position in the stream

skipAll :: ByteArray byteArray => Parser byteArray ()

Skip all the remaining bytes from the current position in the stream

takeStorable :: (ByteArray byteArray, Storable d) => Parser byteArray d

Take a storable from the current position in the stream