Re: [PATCH] schemas: Add vim modeline

["Daniel P. Berrangé" <berrange@redhat.com>]

On Fri, Jul 31, 2020 at 09:15:13AM +0200, Kevin Wolf wrote:
> Am 30.07.2020 um 17:11 hat Eric Blake geschrieben:
> > > The QAPI schema language has two layers:
> > > 
> > > * JSON, with a lexical and a syntactical sub-layer (both in parser.py)
> > > 
> > > * QAPI, with a context-free and a context-dependend sub-layer (in
> > >    expr.py and schema.py, respectively)
> > > 
> > > Replacing the JSON layer is possible as long as the replacement is
> > > sufficiently expressive (not a tall order).
> > 
> > I'm open to the idea, if we want to attempt it, and agree with the
> > assessment that it is not a tall order.
> 
> I'm not so sure about that. I mean, it certainly sounds doable if need
> be, but getting better syntax highlighting by default in some editors
> feels like a pretty weak reason to switch out the complete schema
> language.

The main compelling reason to me is that we get to throw away our
custom written parsing code and use a standard python library.
Actually following a standardized document format is a benefit to
contributors, over something that looks like a standard format but
is actually slightly different as it is our own parser.

Automatic correct syntax highlighting is a happy side effect.
More interesting is if the editor automatically does the right
thing with indentation/formatting when writing schemas.

I wont miss the "not allowed a trailing comma after the last field"
part of JSON as I always get it wrong.

Regards,
Daniel
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