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> Haskell Core Libraries (base package) Parent Contents Index Text.ParserCombinators.ReadPrec Portability portable Stability provisional Maintainer libraries@haskell.org Contents Precedences Precedence operations Other operations Converters Description This library defines parser combinators for precedence parsing. Synopsis data ReadPrec a type Prec = Int minPrec :: Prec lift :: ReadP a -> ReadPrec a prec :: Prec -> ReadPrec a -> ReadPrec a step :: ReadPrec a -> ReadPrec a reset :: ReadPrec a -> ReadPrec a get :: ReadPrec Char look :: ReadPrec String (+++) :: ReadPrec a -> ReadPrec a -> ReadPrec a pfail :: ReadPrec a choice :: [ReadPrec a] -> ReadPrec a readPrec_to_P :: ReadPrec a -> Int -> ReadP a readP_to_Prec :: (Int -> ReadP a) -> ReadPrec a readPrec_to_S :: ReadPrec a -> Int -> ReadS a readS_to_Prec :: (Int -> ReadS a) -> ReadPrec a Documentation data ReadPrec a Instances Functor ReadPrec Monad ReadPrec MonadPlus ReadPrec Precedences type Prec = Int minPrec :: Prec Precedence operations lift :: ReadP a -> ReadPrec a Lift a predence-insensitive ReadP to a ReadPrec prec :: Prec -> ReadPrec a -> ReadPrec a (prec n p) checks that the precedence context is less than or equal to n, * if not, fails * if so, parses p in context n step :: ReadPrec a -> ReadPrec a Increases the precedence context by one reset :: ReadPrec a -> ReadPrec a Resets the precedence context to zero Other operations get :: ReadPrec Char look :: ReadPrec String (+++) :: ReadPrec a -> ReadPrec a -> ReadPrec a pfail :: ReadPrec a choice :: [ReadPrec a] -> ReadPrec a Converters readPrec_to_P :: ReadPrec a -> Int -> ReadP a readP_to_Prec :: (Int -> ReadP a) -> ReadPrec a readPrec_to_S :: ReadPrec a -> Int -> ReadS a readS_to_Prec :: (Int -> ReadS a) -> ReadPrec a Produced by Haddock version 0.4