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Subject:	Re: [geda-user] A lesson from gnet-makefile
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From:	John Doty <jpd AT noqsi DOT com>
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Date:	Tue, 13 Oct 2015 15:09:25 -0600
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On Oct 13, 2015, at 2:39 PM, DJ Delorie <dj AT delorie DOT com> wrote:

>=20
>> Please not in libgeda or the geda-gaf core tools. That has
>> tremendous potential to break things. geda-gaf is a mature toolkit
>> in production use: changes to the core should not be taken
>> lightly. New tools and new plug-ins are great. We have a transparent
>> schematic format and powerful scripting mechanisms to give us power
>> and to allow us to keep that power from interfering with each
>> other's objectives.
>=20
> What about exposing attributes-on-nets to the backends?
>=20

I=92ve wanted that for a long time, but I note that you can effectively =
attach attributes to nets using symbols. The fine primitive =
gnetlist:graphical-objs-in-net-with-attrib-get-attrib (the longest name =
in the gnetlist namespace) allows a backend to extract them. This is =
more versatile, as it allows the back end not only access to attributes, =
but allows a symbol to define relationships between nets. Consider the =
following, which could allow a backend to deduce that a pair of nets is =
a transmission line, and give it a name:


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So, I see no urgency to exposing attributes on nets.

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com



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