Export individual parsers from HaskLike
Getty Ritter
7 years ago
| 5 | 5 | HaskLikeAtom(..) |
| 6 | 6 | , haskLikeParser |
| 7 | 7 | , haskLikePrinter |
| 8 | -- * Individual Parsers | |
| 9 | , parseHaskellString | |
| 10 | , parseHaskellFloat | |
| 11 | , parseHaskellInt | |
| 8 | 12 | ) where |
| 9 | 13 | |
| 10 | 14 | #if !MIN_VERSION_base(4,8,0) |
| 51 | 55 | instance IsString HaskLikeAtom where |
| 52 | 56 | fromString = HSIdent . fromString |
| 53 | 57 | |
| 54 | pString :: Parser Text | |
| 55 | pString = pack . catMaybes <$> between (char '"') (char '"') (many (val <|> esc)) | |
| 58 | parseHaskellString :: Parser Text | |
| 59 | parseHaskellString = pack . catMaybes <$> between (char '"') (char '"') (many (val <|> esc)) | |
| 56 | 60 | where val = Just <$> satisfy (\ c -> c /= '"' && c /= '\\' && c > '\026') |
| 57 | 61 | esc = do _ <- char '\\' |
| 58 | 62 | Nothing <$ (gap <|> char '&') <|> |
| 81 | 85 | "\STX\ETX\EOT\ENQ\ACK\BEL\DLE\DC1\DC2\DC3\DC4\NAK" ++ |
| 82 | 86 | "\SYN\ETB\CAN\SUB\ESC\DEL") |
| 83 | 87 | |
| 84 | pFloat :: Parser Double | |
| 85 | pFloat = do | |
| 88 | parseHaskellFloat :: Parser Double | |
| 89 | parseHaskellFloat = do | |
| 86 | 90 | n <- decNumber |
| 87 | 91 | withDot n <|> noDot n |
| 88 | 92 | where withDot n = do |
| 105 | 109 | power :: Num a => Parser (a -> a) |
| 106 | 110 | power = negate <$ char '-' <|> id <$ char '+' <|> return id |
| 107 | 111 | |
| 108 | pInt :: Parser Integer | |
| 109 | pInt = do | |
| 112 | parseHaskellInt :: Parser Integer | |
| 113 | parseHaskellInt = do | |
| 110 | 114 | s <- power |
| 111 | 115 | n <- pZeroNum <|> decNumber |
| 112 | 116 | return (fromIntegral (s n)) |
| 121 | 125 | |
| 122 | 126 | pHaskLikeAtom :: Parser HaskLikeAtom |
| 123 | 127 | pHaskLikeAtom |
| 124 | = HSFloat <$> (try pFloat <?> "float") | |
| 125 | <|> HSInt <$> (try pInt <?> "integer") | |
| 126 |
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| 128 | = HSFloat <$> (try parseHaskellFloat <?> "float") | |
| 129 | <|> HSInt <$> (try parseHaskellInt <?> "integer") | |
| 130 | <|> HSString <$> (parseHaskellString <?> "string literal") | |
| 127 | 131 | <|> HSIdent <$> (parseR5RSIdent <?> "token") |
| 128 | 132 | |
| 129 | 133 | sHaskLikeAtom :: HaskLikeAtom -> Text |