Re: [Vala] converting void** to int[]*, or other ways to generically assign arrays

[yannick inizan <inizan yannick gmail com>]

there are no gtype for value array, except for string (GStrv) ?!

2014-10-16 7:00 GMT+02:00 Andy Lees <andrewl oz gmail com>:

> Hi,
>
> In providing a general purpose configuration facility, I register the
> address of configured variables in a void*. The description of a configured
> item is:
>     string key;
>     Type type;
>     void *loc;
>     string? deflt;
>     int size;
>     ConfigFlags flags;
> and an example configuration definition would be:
> Conf.ConfItem ("Priority", typeof (int32), &conf.priority, "30", 0, 0)
> or
> Conf.ConfItem ("Channels", typeof (int32[]), &conf.channels, "", 0, 0)
> and an assignment is like:
> *((int32*)it.loc) = int.parse (val);
> This works fine with single values, but I cannot seem to find a way to
> assign arrays.  If I use something like:
> void **ptr = it.loc;
> *ptr = to_int32_arr (list);
> The array pointer is assigned, but the length (and I assume a reference
> count) is not.
>
> A problem is that I cannot figure out how to declare a pointer to an array
> - declarations like: int32[] *target; don't compile.  Similarly an
> assignment like:
> *((int32[]*)it.loc) = to_int32_arr (list);
> Doesn't compile. ( syntax error, expected identifier).
>
> Surely there is a way to do this sort of thing straightforwardly in vala?
> Is there a way to declare a pointer to an array?
>
> Any assistance is welcome.
>
> Regards,
>
> Andrew Lees
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