[cl-json-devel] Parsing JavaScript data

Andrei Stebakov lispercat at gmail.com
Tue Jun 10 14:41:16 UTC 2008


I looked at the test cases for encoding/decoding. Looks like they all deal
with json data structures starting with "[" and I couldn't find any method
that would do anything similar to what you mentioned:
>>> var hello=[{a:2,b:3}]; console.log(hello.toJSON());
[{"a": 2, "b": 3}]
Did you suggest that I should find some library that would help me to
evaluate my var hello=[{a:2,b:3}]; to [{"a": 2, "b": 3}] and then use
cl-json to decode it to alist?

Andrew

On Tue, Jun 10, 2008 at 10:04 AM, Henrik Hjelte <henrik at evahjelte.com>
wrote:

> On Tue, Jun 10, 2008 at 2:00 PM, Andrei Stebakov <lispercat at gmail.com>
> wrote:
> > I was sending the string I mentioned starting with "var Categories =
> ....".
>
> ok, that was javascript source code, not json.
> When it is evaluated, it becomes a javascript array.
> That array can be encoded to Json, for that you need
> a javascript library to do the encoding.
> Look at www.json.org for a description of json and for available
> libraries, I believe that
> all major javascript frameworks have a json encoder.
>
> For example if you have prototype it adds a method to all arrays:
>
> var hello=[{a:2,b:3}];
> console.log(hello.toJSON());
>
> >>> var hello=[{a:2,b:3}]; console.log(hello.toJSON());
> [{"a": 2, "b": 3}]
> (output from Firebug, not the quotes around a and b when it is JSON)
>
> > Looks like I somehow need to translate the Categories and DB to some json
> > tree, but I don't know how to do it.
>
> I would look at the test cases for cl-json, they explain fairly well
> how to do encoding
> and decoding.
>
> > Should I resort to flex/bison or I can just use the libraries
> > available for common lisp?
>
> I don't know anything about flex or bison. But I say it is early to
> give up at this state,
> so far the problem has not been with cl-json.
>
> Good luck,
> Henrik
>
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