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Fix some whitespace

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This commit is contained in:
Joscha 2017-11-25 22:59:52 +00:00
parent 91fd370380
commit 3fa8b3be2b
1 changed files with 9 additions and 6 deletions
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15
Lambda.hs
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@ -64,8 +64,8 @@ display unicode = d [] . renameUniquely
| n >= 0 && n < length c = c !! n
| otherwise = "ERR"
d c (ESymbol s) = s
d c (ELambda s e@(ELambda _ _)) = l ++ s ++ " " ++ (tail $ d (s:c) e)
d c (ELambda s e) = l ++ s ++ "." ++ d (s:c) e
d c (ELambda s e@(ELambda _ _)) = l ++ s ++ " " ++ (tail $ d (s : c) e)
d c (ELambda s e) = l ++ s ++ "." ++ d (s : c) e
d c (EExpr a@(ELambda _ _) b@(ELambda _ _)) = "(" ++ d c a ++ ") (" ++ d c b ++ ")"
d c (EExpr a@(ELambda _ _) b@(EExpr _ _) ) = "(" ++ d c a ++ ") (" ++ d c b ++ ")"
d c (EExpr a b@(ELambda _ _)) = d c a ++ " (" ++ d c b ++ ")"
@ -115,13 +115,16 @@ chainl1' :: ReadP a -> ReadP (a -> a -> a) -> ReadP a
chainl1' p f = foldl1 <$> f <*> many1' p
parens :: [(Char, Char)]
parens = [('(',')'),('[',']'),('{','}')]
parens = [ ('(', ')')
, ('[', ']')
, ('{', '}')
]
isOpeningParen :: Char -> Bool
isOpeningParen a = isJust $ lookup a parens
isClosingParen :: Char -> Char -> Bool
isClosingParen a b = fromMaybe False $ (==b) <$> lookup a parens
isClosingParen a b = fromMaybe False $ (== b) <$> lookup a parens
parenthesize :: ReadP a -> ReadP a
parenthesize parser = do
@ -159,11 +162,11 @@ findReferences :: (Eq s) => Expression s -> Expression s
findReferences = find_ []
where find_ context sym@(ESymbol s) = fromMaybe sym $ EReference <$> elemIndex s context
find_ context ref@(EReference _) = ref
find_ context (ELambda s e) = ELambda s $ find_ (s:context) e
find_ context (ELambda s e) = ELambda s $ find_ (s : context) e
find_ context (EExpr a b) = EExpr (find_ context a) (find_ context b)
removeApostrophes :: String -> String
removeApostrophes = reverse . dropWhile (=='\'') . reverse
removeApostrophes = reverse . dropWhile (== '\'') . reverse
parseMaybe :: String -> Maybe (Expression String)
parseMaybe s = do