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List: pykde
Subject: Re: [PyKDE] SIP issues.
From: Gerard Vermeulen <gerard.vermeulen () grenoble ! cnrs ! fr>
Date: 2004-11-24 11:50:01
Message-ID: 20041124125001.4717eb76.gerard.vermeulen () grenoble ! cnrs ! fr
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On Wed, 24 Nov 2004 09:34:08 -0000 (GMT)
"Phil Thompson" <phil@riverbankcomputing.co.uk> wrote:
> > Hi,
> >
> > When trying to wrap QwtPlot3D (http://qwtplot3d.sourceforge.net), I
> > encountered
> > several issues with SIP:
> >
> > (1) Problems in getting an (abstract) virtual operator() working. Finally,
> > the following code works with SIP4 (thanks to the extra class
> > PyFunction)
> > but not (yet) with SIP3:
>
> I don't think virtual operators are supposed to work (that's a feature).
> The parser should complain if you try (that's a bug). I'll look in more
> detail.
>
Obviously it made it past the SIP4 (but not SIP3) parser.
QwtPlot3D has 4 occurrences of 'virtual TYPE operator(..) = 0;' and 1
occurrence of 'virtual TYPE operator(..);'
It is quite a common C++ idiom for classes that act like a mathematical
function, so I would hate it if you make the parser complain (I do not think
that it is important that SIP recognizes the '= 0').
I think, I can show how to change the generated code so that it works without
my hack of an extra helper class. I'll try to do that tonight.
Gerard
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