gtkmodule: Throw error on [GtkChild] in non-[GtkTemplate] class

If this happens, the author most probably just forgot to add the
[GtkTemplate] attribute and we throw an error.

diff --git a/codegen/valagtkmodule.vala b/codegen/valagtkmodule.vala
index 66139f14d5751c606fae853f952b60f63673dc1d..f3c9a3d41e1b56221921570e410b15de12c36eff 100644 (file)
--- a/codegen/valagtkmodule.vala
+++ b/codegen/valagtkmodule.vala
@@ -199,7 +199,7 @@ public class Vala.GtkModule : GSignalModule {
                base.visit_field (f);
 
                var cl = current_class;
-               if (cl == null || cl.error || !is_gtk_template (cl)) {
+               if (cl == null || cl.error) {
                        return;
                }
 
@@ -207,6 +207,13 @@ public class Vala.GtkModule : GSignalModule {
                        return;
                }
 
+               /* If the field has a [GtkChild] attribute but its class doesn'thave a
+                        [GtkTemplate] attribute, we throw an error */
+               if (!is_gtk_template (cl)) {
+                       Report.error (f.source_reference, "[GtkChild] is only allowed in classes with a [GtkTemplate] attribute");
+                       return;
+               }
+
                push_context (class_init_context);
 
                /* Map ui widget to a class field */