Re: [Vala] [PATCH] Belongs_to and is_instance for vapigen

[tecywiz121 <tecywiz121 hotmail com>]

On Sun, 2010-10-03 at 21:05 -0700, Evan Nemerson wrote:
> On Fri, 2010-10-01 at 22:49 -0400, tecywiz121 wrote:
> > On Tue, 2010-09-28 at 10:15 -0700, Evan Nemerson wrote:
> > > On Mon, 2010-09-27 at 17:34 -0400, tecywiz121 wrote:
> > > > Hello vala developers!
> > > > 
> > > > I updated my old patch adding belongs_to and is_instance options to
> > > > vapigen, and I was wondering if I could get them included in vapigen.
> > > > They are quite useful in wrapping not-entirely-glib libraries.
> > > 
> > > How is belongs_to different from parent?
> > 
> > Okay, so I tried my generation with parent instead of belongs_to.  I got
> > a bunch of errors along the lines of:
> > 
> > error: `cp.Body' is not a type
> > 
> > Even though the classes are defined in my chipmunk-custom.vala file.
> > Correct me if I am wrong, but I think the way parent works is by adding
> > functions to a type that was parsed by vala-gen-introspect.  Belongs_to
> > will add the function to types that are defined near the end of
> > generating the vapi file.
> 
> No, the symbols are added to a list which for which processing is
> deferred until all other symbols have been processed. See [1]. The patch
> which added initial support for parent is at [2]. There are examples of
> its use in gtk+-2.0, gtk+-3.0, and libsoup-2.4.
> 
> It's hard to know exactly what is going on without an example--can you
> post the gidl and metadata somewhere?

Sure thing, both are available at:
http://gitorious.org/chipmunk-vapi/chipmunk-vapi/trees/master/chipmunk

Just replace belongs_to with parent in the metadata file.

Thanks,
Sam