Created attachment 166980 [details] [review]
Add support for parsing error domains from GIR files

Attached is an *unfinished* patch to add support for parsing error domains from GIR files. It converts every <enumeration> element which has a glib:error-quark attribute to a Vala errordomain rather than a normal enum.

Unfortunately, it doesn't quite work. When creating the telepathy-glib bindings (specifically, when parsing the TpError enumeration shown below) it gives the following error:

error: The type name `Error' could not be found
Generation failed: 1 error(s), 0 warning(s)

I have no idea how to fix this. The error isn't the most helpful either. I hope it's not much work to fix up the patch, since the bulk of the work is done and it's probably just some type registration issue in the parser which I haven't figured out. :-(

Here's the GIR extract for TpError:

<enumeration name="Error" c:type="TpError" glib:error-quark="tp_error_quark">
  <doc xml:whitespace="preserve">Enumerated type representing the Telepathy D-Bus errors.</doc>
  <member name="network_error" value="0" c:identifier="TP_ERROR_NETWORK_ERROR"/>
  <member name="not_implemented" value="1" c:identifier="TP_ERROR_NOT_IMPLEMENTED"/>
  <member name="invalid_argument" value="2" c:identifier="TP_ERROR_INVALID_ARGUMENT"/>
</enumeration>