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Date:	Mon, 11 Jan 2016 06:31:33 +0000
From:	"M. J. Everitt (m DOT j DOT everitt AT iee DOT org) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] A new PCB file format - modular system
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Reply-To:	geda-user AT delorie DOT com

On 11/01/16 03:19, DJ Delorie wrote:
>> What surprises me is that it looks like you were able to do
>> everything with PCBType.  I don't remember the gruesome details now
>> but last time I tried to make the existing parser work independent
>> of pcb I ended up with the impression that PCBType didn't reflect
>> everything that goes in pcb files -- close but not quite everything.
> Note that one of the messy and probably written rules about hid is -
> the hid module can do whatever it wants with core data and functions,
> but the core can only access the hid module via the published API.
>
> So if an importer/exporter needs more data than PCBType, it can just
> reach in and get it.
Whilst I take your point in that the HID module is presently the be-all
and end-all of access to pcb data, I think having some data types
defined in an API is also quite useful. It does make expansion much
easier, without having to make a bunch of calls through the HID system
constantly to get/set data .. even if that's a perfectly bona-fide way
to accomplish it.

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