Json parser #605
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Json parser #605
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pranaysashank
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| {-# INLINE match #-} | ||
| match :: MonadCatch m => Word8 -> Parser m Word8 () | ||
| match w = P.eqBy (==) [w] |
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This should be P.satisfy (== w).
| where | ||
| initial = return begin | ||
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| step s a = return $ s * 10 + fromIntegral (a - 48) |
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You are assuming that the input is already validated to be digits.
| n <- P.takeWhile1 (\w -> w - 48 <= 9) (foldToInteger 0) | ||
| when (z == zero && n /= 0) $ do | ||
| P.die $ " Leading zero in a number is not accepted in JSON." | ||
| return n |
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Should not use a monad here, I am not sure if it fuses, you can check. We can write it in other ways e.g.:
- write it directly as a primitive parser
- use a
tee
| let positive = sign == plus || sign /= minus | ||
| pr = P.takeWhile1 (\w -> w - 48 <= 9) (foldToInteger 0) | ||
| when (sign == plus || sign == minus) (skip 1) | ||
| if positive then pr else negate <$> pr |
| {-# INLINE parseJsonNumber #-} | ||
| parseJsonNumber :: MonadCatch m => Parser m Word8 Scientific | ||
| parseJsonNumber = do | ||
| sign <- P.peek |
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| {-# INLINE parseJsonString #-} | ||
| parseJsonString :: MonadCatch m => Parser m Word8 JsonString | ||
| parseJsonString = do |
| parseJson :: MonadCatch m => PR.Parser m Word8 Value | ||
| parseJson = K.toParserK $ parseJsonValue | ||
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| {- |
| escapeFoldUtf8With :: Monad m => Fold m Char container -> Fold m Word8 container | ||
| escapeFoldUtf8With = Uni.escapeFoldUtf8With 92 jsonEscapes | ||
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| type JsonString = Array Char |
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Why can't we have this as Array Word8 using UTF-8 encoding? When needed it can be converted to Chars.
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Why are we using Data.Array for this? It is very inefficient. We can use the Storable array instead.
added 13 commits
October 29, 2020 14:20
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