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module ShowS ( ShowS
, showString, showChar, showParen, shows
, space, nl, sep, replicateS, concatS
) where
import Test.Prop
type ShowS = String -> String
showString :: String -> ShowS
showString s = (s ++)
showStringIsString s = showString s [] -=- s
showStringConcat s1 s2 = (showString s1 . showString s2) [] -=- s1++s2
showChar :: Char -> ShowS
showChar c = (c:)
showParen :: Bool -> ShowS -> ShowS
showParen True s = showChar '(' . s . showChar ')'
showParen False s = s
shows :: Show a => a -> ShowS
shows = showString . show
space :: ShowS
space = showChar ' '
nl :: ShowS
nl = showChar '\n'
sep :: ShowS -> [ShowS] -> ShowS
sep _ [] = id
sep s xs@(_:_) = foldr1 (\ f g -> f . s . g) xs
replicateS :: Int -> ShowS -> ShowS
replicateS n funcS
| n <= 0 = id
| otherwise = funcS . replicateS (n - 1) funcS
replicateSIsConRep n s =
n>=0 ==> replicateS n (showString s) [] -=- concat (replicate n s)
concatS :: [ShowS] -> ShowS
concatS [] = id
concatS xs@(_:_) = foldr1 (\ f g -> f . g) xs
concatSIsConcat xs = concatS (map showString xs) [] -=- concat xs
|