Re: [Vala] Introspection for exception instances

[Michael Gratton <mike vee net>]

Hey Al,

On Tue, Nov 14, 2017 at 3:09 AM, Al Thomas <astavale yahoo co uk> wrote:
> I hope this gets you a step further, but I've not applied this with 
> GLib's cancellable.
> The general pattern is:
>
> void main () {
>     try {
>          test ();
>     } catch (IOError error) {
>        print (error.message + "\n");
>     }
> }
>
> void test () throws IOError {
>     throw new IOError.CANCELLED ("This test has been cancelled");
> }
>
> Just compile with valac --pkg gio-2.0 cancellable_error.vala and you 
> will see
> the message.

Yeah, that will get me the message which is great, but I'm interested 
in the developer-readable string version of the domain and code.

So for example being able to call `error.to_string()` and get 
"IOError.CANCELLED: This test has been cancelled" returned would be 
good, but it would be even better to be able to get the individual 
components, e.g. "IOError" and "CANCELLED".

> I assumed CANCELLABLE was a typo.

Yeah sure was, sorry. I need a type-checker for my email composer.

//Mike

--
⊨ Michael Gratton, Percept Wrangler.
⚙ <http://mjog.vee.net/>