Re: "YAML Easy Schemas"

On Jun 29, 10:53 am, Ingy dot Net <[email protected]> wrote:
> Hi Trans,
>
> Sorry for the late reply but I'm at a Perl conference and catching up on
> email.

Just glad to see you are still around :-)

> I should just mention that I've had the idea of a YeS schema language for a
> couple years now, but haven't gotten around to working much on it. You can
> see it's listed here:http://ingy.pyrl.org/

Well damn. And I thought I was so clever coming up with that name.

> I can write more later, but the basic idea is a shallow YAML mapping
> something like this:
>
> +top: address
> address:
> - name
> - street
> - city
> - state
> - zip
> name: +str
> city: +str
> state: +state
> +state: [AK, IL, TX, WA]
>
> Apologies for incompleteness here...

Interesting approach. I certainly like the simplicity of it. How far
can it go? Looks like it might be limited to a schema for mappings,
their member types and enumerated values. More? For instance how to
specify a field is required?

> Anyway, I just wanted to point out that I've been planning on doing
> something with the same name for years. I sure you just stumbled on the name
> yourself. Maybe we can work together on it.

That would be great!

The reason I even got into this is b/c I have a need for a very strict
YAML document format. At first I was coding a validating reader in
Ruby just for the format, but then realized that my use case was
exactly what a schema was meant to do. So off I went exploring the
possibilities and wound up here. Short story short, I am in need of a
highly capable schema that can really nail down my format.

What do you think of my YPath approach?

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