Text.Parser.LookAhead

Parsers that can lookAhead.

Parsing Combinators

class Parsing m => LookAheadParsing m where

Additional functionality needed to describe parsers independent of input type.

Methods

lookAhead :: m a -> m a

lookAhead p parses p without consuming any input.

Instances

LookAheadParsing ReadP

(LookAheadParsing m, Monad m) => LookAheadParsing (IdentityT m)

(LookAheadParsing m, MonadPlus m) => LookAheadParsing (ReaderT e m)

(LookAheadParsing m, MonadPlus m) => LookAheadParsing (StateT s m)

(LookAheadParsing m, MonadPlus m) => LookAheadParsing (StateT s m)

(LookAheadParsing m, MonadPlus m, Monoid w) => LookAheadParsing (WriterT w m)

(LookAheadParsing m, MonadPlus m, Monoid w) => LookAheadParsing (WriterT w m)

(Stream s m t, Show t) => LookAheadParsing (ParsecT s u m)

(LookAheadParsing m, MonadPlus m, Monoid w) => LookAheadParsing (RWST r w s m)

(LookAheadParsing m, MonadPlus m, Monoid w) => LookAheadParsing (RWST r w s m)