From mboxrd@z Thu Jan  1 00:00:00 1970
From: Scott Wood <scottwood-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Subject: Re: [PATCH 8/9 V3] Add documentation for the new DTS language.
Date: Mon, 01 Mar 2010 13:38:46 -0600
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To: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
Cc: Wood Scott-B07421 <B07421-KZfg59tc24xl57MIdRCFDg@public.gmane.org>, devicetree-discuss-mnsaURCQ41sdnm+yROfE0A@public.gmane.org, Yoder Stuart-B08248 <B08248-KZfg59tc24xl57MIdRCFDg@public.gmane.org>, John Williams <john.williams-g5w7nrANp4BDPfheJLI6IQ@public.gmane.org>, Jeremy Kerr <jeremy.kerr-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
List-Id: devicetree@vger.kernel.org

Grant Likely wrote:
> Okay.  So the redefinition of nodes feature got implemented far faster
> than I expected it would.  Woohoo!  :-)
> 
> That leaves the last bit that I really care about; deleting nodes and
> properties.  I can probably find the time to implement the C code for
> this, but have no idea how to do the grammer, and I don't think we've
> got a consensus on syntax.
> 
> Given the following tree...
> 
> / {
>         child-label: child {
>                 prop = <0xbad>;
>                 grandchild-label: grandchild {
>                 };
>         };
> };
> 
> ...here are the use cases that I see as important (plus some suggested
> syntax.  I'm not happy with it though, and I'm open to better ideas).
> 
> 1) Deleting a property from a node:
> &child-label {
>         /* syntax to delete "prop" property */
>         delete-prop("prop");
>         ^prop;  /* this isn't very good, hard to differentiate from
> node deletion */
>         __delete_property = "prop";
> };
> 
> 2) Delete a child node:
> &child-label {
>         /* syntax to delete "grandchild" node */
>         delete-node("grandchild");
>         ^grandchild;
>         __delete_node = "grandchild";
>         grandchild = ^{};
> };
> 
> 3) Delete a labelled node from the top level:
> delete-node(&grandchild-label);

I vote for the function-like option -- delete-prop("prop"), etc.

-Scott