From mboxrd@z Thu Jan  1 00:00:00 1970
From: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
Subject: Re: [PATCH 8/9 V3] Add documentation for the new DTS language.
Date: Mon, 1 Mar 2010 16:42:06 -0700
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To: Stephen Neuendorffer <stephen.neuendorffer-gjFFaj9aHVfQT0dZR+AlfA@public.gmane.org>
Cc: Yoder Stuart-B08248 <B08248-KZfg59tc24xl57MIdRCFDg@public.gmane.org>, Jeremy Kerr <jeremy.kerr-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>, devicetree-discuss-mnsaURCQ41sdnm+yROfE0A@public.gmane.org, John Williams <john.williams-g5w7nrANp4BDPfheJLI6IQ@public.gmane.org>, Wood Scott-B07421 <B07421-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
List-Id: devicetree@vger.kernel.org

On Mon, Mar 1, 2010 at 3:17 PM, Stephen Neuendorffer
<stephen.neuendorffer-gjFFaj9aHVfQT0dZR+AlfA@public.gmane.org> wrote:
> From: glikely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org [mailto:glikely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org] On Behalf Of Gra=
nt Likely
>> reworked to use nodes:
>> foo {
>> =A0 =A0 =A0 =A0 bar-label: bar {
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 prop =3D 2;
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 delete(bar); // should be illegal
>> =A0 =A0 =A0 =A0 };
>> };
>
> Um, my original intent was:
> foo {
> =A0 =A0 =A0 =A0 bar-label: bar {
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 prop =3D 2;
> =A0 =A0 =A0 =A0 };
> =A0 =A0 =A0 =A0 delete(bar); // should be illegal
> };

Ah, yes.  And you are right, that should be illegal.

> So, is it true that a tree which is overlayed on another tree can be inde=
pendently verified to
> be independent of internal ordering? =A0This would be nice if so.

Yes, I think that is a valid statement, with the assumption that label
references at the top level are first resolved.

>> Not sure I follow. =A0It certainly isn't be valid to apply a label to a
>> command like delete().
>
> But the best thing of the above is that there is no longer a distinction =
between commands and data!
> delete is just a tag which gets interpreted during 'reduction' or 'overla=
y'.
>
> For instance, deleting a subnode could be:
>
> foo {
> =A0 =A0 =A0 =A0bar {
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0delete;
> =A0 =A0 =A0 =A0}
> }
>
> I guess this ends up conflicting with a property named 'delete' though.

Right.  It should be something syntactically distinct.

g.

-- =

Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.