Arith

Documentation

data Exp Source

Constructors

Nat Integer
Neg Exp
Add Exp Exp
Sub Exp Exp
Mul Exp Exp
Div Exp Exp

Instances

Show Exp

type ExpP = Parser Token Exp Source

justIf :: (a -> Bool) -> a -> Maybe ()Source

expr :: ExpP Source

term :: ExpP Source

factor :: ExpP Source

fromString :: String -> Maybe Exp Source