codegen: Handle non-default AsyncResult parameter position

Unfortunately gdbus-codegen puts the AsyncResult parameter after possible
out-parameters therefore there is an "async_result_pos" attribute required
to handle this correctly.

Vala supposely follows the common practice to put the AsyncResult before
out-parameters by default.

Fixes https://gitlab.gnome.org/GNOME/vala/issues/709

1 files changed, 5 insertions, 0 deletions

diff --git a/codegen/valaccode.vala b/codegen/valaccode.vala
index d4d9abee5..2954b3e37 100644
--- a/codegen/valaccode.vala
+++ b/codegen/valaccode.vala
@@ -380,6 +380,11 @@ namespace Vala {
 		return get_ccode_attribute(m).vfunc_name;
 	}
 
+	public static double get_ccode_async_result_pos (Method m) {
+		assert (m.coroutine);
+		return m.get_attribute_double ("CCode", "async_result_pos", 0.1);
+	}
+
 	public static string get_ccode_finish_name (Method m) {
 		return get_ccode_attribute(m).finish_name;
 	}