Re: gEDA-user: Schematic Level DRC DIscussion

[Dan McMahill <dan@xxxxxxxxxxxx>]

Peter Clifton wrote:
> On Wed, 2007-11-07 at 14:09 -0700, John Doty wrote:
> 
>> Better documentation of the Guile libgeda API would certainly be  
>> helpful. At the moment, existing examples are the best reference.
> 
> A serious question here..
> 
> What do people use that API for (besides gnetlist backends).
> 
> I ask, because I've got reason to suspect that doing anything
> interesting with it isn't really possible at the moment. (Adding /
> modifying components in arbitrary parts of the schematic).
> 
> Many of the hooks available are fairly impotent to change the schematic
> structure / contents without risking a crash in the gschem / libgeda
> code which called the hook. (At the very least, gschem has no real way
> to know what changes you made and initiate a redraw ).
> 
> I'm not saying we shouldn't have the guile API here.. I'm saying, does
> anyone use it in its present form? (IE.. what do we have to avoid
> breaking when fixing it "properly" at some later date?)

I started doing some work extending the guile api to support building 
simple GUI's in gschem with the intent of making it easy to provide 
support for various simulator or layout backends.  But I never 
"finished" that work and I'm fairly sure no one is using it.

I agree that the API probably isn't quite powerful enough currently.  In 
my mind a big thing missing is a complete set of guile functions for 
database access.

-Dan


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