
Hi Ryan
Isn't this a problem of JSON rather than it's parsers?
That's too say I believe (but could easily be wrong...) that a file
with multiple JSON objects would be ill-formed; it would be
well-formed if the multiple objects were in a single top-level array.
On 29 May 2016 at 18:09, Ryan Newton
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 prone.
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?
Thanks, -Ryan
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