parsec-3.1.11: Monadic parser combinators

Copyright(c) Paolo Martini 2007
LicenseBSD-style (see the file libraries/parsec/LICENSE)
Maintainerderek.a.elkins@gmail.com
Stabilityprovisional
Portabilityportable
Safe HaskellSafe
LanguageHaskell98

Text.Parsec.String

Description

Make Strings an instance of Stream with Char token type.

Synopsis

Documentation

type GenParser tok st = Parsec [tok] st Source #

parseFromFile :: Parser a -> String -> IO (Either ParseError a) Source #

parseFromFile p filePath runs a string parser p on the input read from filePath using readFile. Returns either a ParseError (Left) or a value of type a (Right).

 main    = do{ result <- parseFromFile numbers "digits.txt"
             ; case result of
                 Left err  -> print err
                 Right xs  -> print (sum xs)
             }