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| Date: | Thu, 7 Jan 2016 01:03:09 +0100 |
| Message-ID: | <CACwWb3CozuiSvi-84_oNrVPfmCYgxFB1-piJrVa59d7eOkd2xw@mail.gmail.com> |
| Subject: | Re: [geda-user] A fileformat library |
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--089e01538c3633962c0528b3320d Content-Type: text/plain; charset=UTF-8 That would be nice. Somewhere in the website? Somewhere in the repository? DJ? On 7 Jan 2016 00:46, "Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> wrote: > > > > I recently did a tiny bit of work on the parser in pcb. Of course we > > > > should continue to support it, but it's going to be tough to extend > it > > > > much. It's already overloaded in weird ways (e.g. thermals are > parsed as > > > > flags, with their own non-flex sub-syntax, even though they don't > set any > > > > actual flags). If you do extend it you do hard work and still only > pcb > > > can > > > > read it. Of course you still have to teach the innards of pcb about > your > > > > extensions in order for them to do anything useful. > > > > > > A good start might be to write down what need to be stored even though > > > they are not implemented right now and maybe never will be: > > > 1. Padstack, probably as collection of ordinary drawing primitives. > > > 2. Local copy and reference so update is possible. > > > 3. Net and possible segment attribute for route style, width. > > > 4. Net clerances between any net. > > > 5. Net clerance classes although (4.) could be extended before > entering > > > pcb. > > > 6. Trace impedance. > > > 7. Differential impedance? > > > 8. Pin swapping! > > > 9. Slot swapping. > > > > > > > Lev did something very like this last time this got discussed as sql > > schema. I don't think it had all the above but some of it. > > > > Britton > > I wrote down some more in a text files. Would it be possible collect them > somewhere there everybody could read them? > > > Nicklas Karlsson > --089e01538c3633962c0528b3320d Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <p dir=3D"ltr">That would be nice. Somewhere in the website? Somewhere in t= he repository? DJ?</p> <div class=3D"gmail_quote">On 7 Jan 2016 00:46, "Nicklas Karlsson (<a = href=3D"mailto:nicklas DOT karlsson17 AT gmail DOT com">nicklas DOT karlsson17 AT gmail DOT com</= a>) [via <a href=3D"mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT com</a>= ]" <<a href=3D"mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT com<= /a>> wrote:<br type=3D"attribution"><blockquote class=3D"gmail_quote" st= yle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">> = > > I recently did a tiny bit of work on the parser in pcb.=C2=A0 Of = course we<br> > > > should continue to support it, but it's going to be toug= h to extend it<br> > > > much.=C2=A0 It's already overloaded in weird ways (e.g. = thermals are parsed as<br> > > > flags, with their own non-flex sub-syntax, even though they = don't set any<br> > > > actual flags).=C2=A0 If you do extend it you do hard work an= d still only pcb<br> > > can<br> > > > read it.=C2=A0 Of course you still have to teach the innards= of pcb about your<br> > > > extensions in order for them to do anything useful.<br> > ><br> > > A good start might be to write down what need to be stored even t= hough<br> > > they are not implemented right now and maybe never will be:<br> > >=C2=A0 =C2=A01. Padstack, probably as collection of ordinary drawi= ng primitives.<br> > >=C2=A0 =C2=A02. Local copy and reference so update is possible.<br= > > >=C2=A0 =C2=A03. Net and possible segment attribute for route style= , width.<br> > >=C2=A0 =C2=A04. Net clerances between any net.<br> > >=C2=A0 =C2=A05. Net clerance classes although (4.) could be extend= ed before entering<br> > > pcb.<br> > >=C2=A0 =C2=A06. Trace impedance.<br> > >=C2=A0 =C2=A07. Differential impedance?<br> > >=C2=A0 =C2=A08. Pin swapping!<br> > >=C2=A0 =C2=A09. Slot swapping.<br> > ><br> ><br> > Lev did something very like this last time this got discussed as sql<b= r> > schema.=C2=A0 I don't think it had all the above but some of it.<b= r> ><br> > Britton<br> <br> I wrote down some more in a text files. Would it be possible collect them s= omewhere there everybody could read them?<br> <br> <br> Nicklas Karlsson<br> </blockquote></div> --089e01538c3633962c0528b3320d--
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