add an 'v != null' assertion to avoid GLib Critical error :)
2015-01-29 17:42 GMT+01:00 Guillaume Poirier-Morency <
[email protected]>:
> Le jeudi 29 janvier 2015 à 16:58 +0100, yannick inizan a écrit :
> > the old safe method :
> >
> >
> > public static void main (string[] args) {
> > Value? v = "toto";
> > Value val = {};
> > val.init (v.type());
> > v.copy (ref val);
> > print ("%s\n", (string)val);
> > }
> >
> >
> > p.s. : sorry for last message (*$£% gmail)
> >
> > 2015-01-29 16:48 GMT+01:00 Guillaume Poirier-Morency
> > <[email protected]>:
> > Le jeudi 29 janvier 2015 à 15:30 +0100, yannick inizan a
> > écrit :
> > > Vala translate your cast to a get_<type> function of your
> > value.
> > >
> > > ex:
> > > Value v = "toto";
> > > var val = (string)v; //equals to 'var val = v.get_string();'
> > >
> > > so (Value)my_val is impossible because GLib.Value doesn't
> > have a
> > > get_value function.
> > >
> > > 2015-01-29 15:16 GMT+01:00 Guillaume Poirier-Morency
> > > <[email protected]>:
> > > I am working on Valum, a web micro-framework written
> > in Vala
> > > https://github.com/antono/valum
> > >
> > > valac is generating very strange code that doesn't
> > compile.
> > >
> > > Part of the framework is about offering facilities
> > to push
> > > arbitrary
> > > values into CTPL template environment.
> > >
> > > At some point, I try to case a Value? to a non-null
> > Value (I
> > > have of
> > > course tested the null case, I just want it to pass
> > under
> > > --enable-experimental-non-null)
> > >
> > > vala --version
> > >
> > > Vala 0.26.1
> > >
> > > Here's the use case:
> > >
> > > Value? v;
> > > var val = (Value) v;
> > >
> > > The error:
> > >
> > >
> > > lvalue required as unary '&' operand
> > >
> > > I attached the full log and the bug is easily
> > reproducible
> > > (the sample
> > > does it).
> > >
> > > --
> > > Guillaume Poirier-Morency
> > <[email protected]>
> > >
> > > _______________________________________________
> > > vala-list mailing list
> > > [email protected]
> > > https://mail.gnome.org/mailman/listinfo/vala-list
> > >
> > >
> > >
> >
> >
> > Thanks for the answer!
> >
> > That kind of code should be detected by Vala compiler as an
> > error.
> >
> > What approach would you recommend to cast "Value?" to
> > "Value" ?
> >
> > It's not that bad if it is not yet possible, but I would
> > really like to
> > build the whole projet with --enable-experimental-non-null ;)
> >
> >
> > --
> > Guillaume Poirier-Morency <[email protected]>
> >
> >
>
> Great! That should do the trick for now :)
> --
> Guillaume Poirier-Morency <[email protected]>
>
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