Dear all,
Using Parsec, I want to represent a string (of anyToken) not ended
with symbol semi (;). I use the command notFollowedby as follows:
module Parser where
import Parsec
import qualified ParsecToken as P
import ParsecLanguage
langDef::LanguageDef ()
langDef = emptyDef
{reservedOpNames = []}
lexer::P.TokenParser()
lexer = P.makeTokenParser langDef
semi = P.semi lexer
str1 :: Parser String
str1 = do {str <- many anyToken; notFollowedBy semi; return str}
However, when I compile, there is an error.
ERROR "Test.hs":17 - Type error in application
*** Expression : notFollowedBy semi
*** Term : semi
*** Type : GenParser Char () String
*** Does not match : GenParser [Char] () [Char]
I do not know how to fix it. Help me. Thanks for your time.
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