[Haskell-cafe] JSON parser that returns the rest of the string that was not used
rrnewton at gmail.com
Sun May 29 17:09:54 UTC 2016
As someone who spent many years putting data in S-expression format, it
seems natural to me to write multiple S-expressions (or JSON objects) to a
file, and expect a reader to be able to read them back one at a time.
This seems comparatively uncommon in the JSON world. Accordingly, it looks
like the most popular JSON parsing lib, Aeson, doesn't directly provide
this functionality. Functions like decode just return a "Maybe a", not the
left-over input, meaning that you would need to somehow split up your
multi-object file before attempting to parse, which is annoying and error
It looks like maybe you can get Aeson to do what I want by dropping down to
the attoparsec layer and messing with IResult.
But is there a better way to do this? Would this be a good convenience
routine to add to aeson in a PR? I.e. would anyone else use this?
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