On Monday 07 February 2011 07:07:42 Sylvain Meunier wrote: > Le 04/02/2011 11:43, Sylvain Meunier a écrit : > > Le 03/02/2011 19:44, Hugo Parente Lima a écrit : > >> On Thursday 03 February 2011 16:29:59 Anderson Lizardo wrote: > >>> On Thu, Feb 3, 2011 at 12:13 PM, Hugo Parente Lima > >>> > >>> <hugo.l...@openbossa.org> wrote: > >>>> On Thursday 03 February 2011 12:54:50 Sylvain Meunier wrote: > >>>>> Hello, > >>>>> > >>>>> What is the usual way for binding method templates ? > >>>> > >>>> There's no simple way, sometimes it's possible some times not because > >>>> we can't instantiate those template methods at runtime. So you need > >>>> to analyze the semantics of the method and write some kind of code > >>>> injection to do the hard task of connect the world of compile time > >>>> stuff (C++ templates) to the world of run time stuff (Python). > >>>> > >>>> As an example you could see our implementation of > >>>> qmlRegisterType<T>[1] or QObject::findChildren to have an idea. > >>> > >>> I wonder if this could be made automatic by extending apiextractor to > >>> parse templates as well? or does it already parse templates and one > >>> could extend the generator? > >>> > >>> Of course, it would not work in 100% cases, but it would be nice if we > >>> could have some typesystem support for simple templates which would > >>> not require manual inject code. > >> > >> It isn't a parser problem, it's a "can't generate C++ code at runtime > >> problem" > >> > >> :-P > >> > >> C++ knows everything at compile time, but when we are generating the > >> bindings we don't know what types the python user will use to call > >> Foo::bar<T> method. > >> > >> For some cases we can do workarounds like creating a C++ type and using > >> it in the function call every time the python user calls the bar > >> function with a Python type, for other cases it is a bit harder, btw > >> you can take as hard example the qRegisterMetaType function that isn't > >> binded yet in PySide because it requires a non trivial workaround. > >> > >>> My two BRL cents :) > >> > > I follow Anderson Lizardo on this point. Instantiating some templates > > adding one line in a type system could be really helpful. > > > For illustrating my previous point, a very mechanical code injection for > binding this method template : > > [snip] > > There is no runtime problem in this case, all the required types are > available at compilation time.
What if I want to create my own property manager in Python?
e.g.:
class GeoCoordsPropManager(object):
# ...
?
How do I use them with your binding for the template-function?
--
Hugo Parente Lima
INdT - Instituto Nokia de Tecnologia
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