Re: [Vala] Properties == GObject properties?



We don't put much interest on reporting C naming conflicts to the user.
That's not good, however the compiler needs many (but not major) changes to
achieve this, and there are other priorities: in the sense that now you're
stressing the compiler, but in normal usage you don't.
Also, we don't want to mangle the name in case there's a conflict at the C
level, because you can't otherwise reason on the name you expect: let's say
that void @if() { } was renamed in C as _vala_if() { }, I bet that's not
what you want (other than the fact that you don't want to call a method @if
in general).


On Fri, Oct 11, 2013 at 10:53 PM, Simon Kågedal Reimer
<skagedal gmail com>wrote:

Oh, interesting! I updated the page, hope this is correct:


https://wiki.gnome.org/action/info/Vala/Tutorial?action=diff&rev2=242&rev1=241

I also noticed that doing this as a top-level function, i.e naming a
function outside any class or namespace something beginning with a
digit, generates faulty C code. This should be reported as a valac
bug, right? What would be the least surprising behavior, that valac
renames the function (adding some prefix) or to disallow this?  Same
thing with keywords, this passes valac:

void @if () {
}

Regards, Simon

On Fri, Oct 11, 2013 at 5:58 PM, Florian Brosch <flo brosch gmail com>
wrote:
Hey Simon,

The overview is outdated:

public class Foo : Object {
    // Identifier = "0foo"
    public string @0foo {get;set;}
}

Regards,
 Florian

On 11 October 2013 10:46, Simon Kågedal Reimer <skagedal gmail com>
wrote:
 Hi,

On Fri, Oct 11, 2013 at 9:34 AM, Tal Hadad <tal_hd hotmail com> wrote:
First time I hear not all properties are GObject.

Suppose I have this property:

...
public int 1numbered { get; set; }
...

This is not a GObject property, since it's started with a number.

You can't have that at all, see
https://wiki.gnome.org/Vala/Tutorial#Syntax_Overview :

"For identifier names the same rules apply as for C identifiers: the
first character must be one of [a-z], [A-Z] or an underscore,
subsequent characters may additionally be digits [0-9]."

Signal names also must start with a letter:


https://developer.gnome.org/gobject/stable/gobject-Signals.html#g-signal-new

Regards, Simon
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