Maybe you should look into Parsec, a Haskell library for writing parsers.
Google should find what you need.
- Phil
On Dec 9, 2007 1:58 AM, Ryan Bloor
hi
I have a function parseInt... which needs an error guard for when the input is not an Int.
parseInt :: Parser parseInt [] = [] parseInt xs = let (digits, rest) = span isDigit (removeSpace xs) in [(EInt (read digits), removeSpace rest)]
Also... I have a function that does this... parseBinaryOp "+" "(5 + 2) if" gives...[(Int 5, Int 2, "if")] so, op is '+' or "&&". I am unsure of how to begin...
parseBinaryOp :: String -> String -> [(Expr, Expr, String)] parseBinaryOp op str
Thankyou
Ryan
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