Re: [Json] Schemas & so on

[Peter Cordell <[e-mail]>]

On 01/05/2016 21:55, Tim Bray wrote:
>
> I find myself tasked with specifying a JSON-based DSL and preparing it
> for public release, with a validator and so on.
>
> I had never really concerned myself much with options for JSON language
> definition, but have discovered they’re not very good.  The JSON Schema
> project is not terribly appealing - opaque spec, poor documentation and
> tools - and smells of neglect (last I-D expired in 2013).  It's been
> suggested that a good approach would be just to write a jq program that
> emits true or false.
>
> Is there good conventional wisdom about formally specifying a JSON dialect?

Andy Newton and I are working on JSON Content Rules (JCR) [1] which is a 
basic JSON grammar schema language that mirrors the functionality of 
Relax NG and XSD.  We also have put together some thoughts on JSON 
Content Rules Co-Constraints (JCRCC) [2] which adds Schematron like 
functionality to JCR.  There's some links to pilot implementations at [3].

Our goal has been to make it as simple as we can without losing 
expressiveness with a view to not requiring users to be experts in the 
technology before they can make use of it.  We're also hoping that a 
simple solution will also readily enable multiple implementations.

We'd obviously be delighted to hear from anybody who's interested in the 
work.

Thanks,

Pete.

[1] https://datatracker.ietf.org/doc/draft-newton-json-content-rules/
[2] https://datatracker.ietf.org/doc/draft-cordell-jcr-co-constraints/
[3] http://codalogic.github.io/jcr/
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Pete Cordell
Codalogic Ltd
Read & write XML in C++, http://www.xml2cpp.com
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