Re: [Vala] [PATCH] GIO nullable parameters

[Sam Liddicott <sam liddicott com>]

In fact I think I'll use such annotation on a samba4 module I'm working on, so if anyone wants to influence 
inline C representations of vala attributes, now is the time to do it.

Sam

-----Original Message-----
From: Sam Liddicott <sam liddicott com>
Sent: 20 May 2008 16:12
Cc: vala-list gnome org
Subject: Re: [Vala] [PATCH] GIO nullable parameters

* Frederik wrote, On 20/05/08 14:01:
> Jürg Billeter wrote:
> > On Tue, 2008-05-13 at 12:09 +0200, Frederik wrote:
> > > I think in the GIO vapi bindings there are more parameters that should
> > > be marked as nullable. For example: "etag" as in File.replace() or
> > > "progress_callback" as in File.move().
> >
> > Yes, we certainly still miss a lot of nullable annotations.
>
> I've been looking at the GIO documentation and spotted all nullable
> parameters. I have attached a patch for gio-2.0.metadata inclusive the
> newly generated vapi. This should cover all nullable parameters in GIO.
I think it may be simpler to allow the null-able clue to be part of the
C source using a macro indicator which can be compiled away in C.

#ifndef VALA
#define NULL_OK
#endif
...

send_to_mainloop_async (GLib.SourceFunc func, NULL_OK GLib.DestroyNotify notify);

...

It enrichens the C source and allows the C maintainer to keep the hint
alive effortlessly, rather than someone have to keep a meta file in sync.

Sam



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