[gobject-introspection] scanner: allow GObject.Object as a superclass return type

[Dan Winship <danw src gnome org>]

commit 52e12815dc33af5dab95c08d29396c48ed8055c9
Author: Dan Winship <danw gnome org>
Date:   Thu Oct 13 12:21:22 2011 -0400

    scanner: allow GObject.Object as a superclass return type
    
    6172c268 made the scanner think GObject* wasn't a superclass of its
    subclasses. Fix that.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=661677

 giscanner/maintransformer.py       |    2 +-
 tests/scanner/Foo-1.0-expected.gir |    5 +++++
 tests/scanner/foo.c                |   12 ++++++++++++
 tests/scanner/foo.h                |    3 ++-
 4 files changed, 20 insertions(+), 2 deletions(-)
---
diff --git a/giscanner/maintransformer.py b/giscanner/maintransformer.py
index a921ad4..5b1ffb7 100644
--- a/giscanner/maintransformer.py
+++ b/giscanner/maintransformer.py
@@ -1166,7 +1166,7 @@ method or constructor of some type."""
                     parent = self._transformer.lookup_typenode(parent.parent)
                 else:
                     parent = None
-                if parent is None or parent.gi_name == 'GObject.Object':
+                if parent is None:
                     message.warn_node(func,
                         "Return value is not superclass for constructor; "
                         "symbol=%r constructed=%r return=%r" % (
diff --git a/tests/scanner/Foo-1.0-expected.gir b/tests/scanner/Foo-1.0-expected.gir
index b8dc33f..826d676 100644
--- a/tests/scanner/Foo-1.0-expected.gir
+++ b/tests/scanner/Foo-1.0-expected.gir
@@ -366,6 +366,11 @@ and/or use gtk-doc annotations.  -->
           <type name="Object" c:type="FooObject*"/>
         </return-value>
       </constructor>
+      <constructor name="new_as_super" c:identifier="foo_object_new_as_super">
+        <return-value transfer-ownership="full">
+          <type name="GObject.Object" c:type="GObject*"/>
+        </return-value>
+      </constructor>
       <function name="a_global_method"
                 c:identifier="foo_object_a_global_method">
         <return-value transfer-ownership="none">
diff --git a/tests/scanner/foo.c b/tests/scanner/foo.c
index 5456640..3e15444 100644
--- a/tests/scanner/foo.c
+++ b/tests/scanner/foo.c
@@ -226,6 +226,18 @@ foo_object_init (FooObject *object)
 
 }
 
+FooObject *
+foo_object_new (void)
+{
+  return g_object_new (FOO_TYPE_OBJECT, NULL);
+}
+
+GObject *
+foo_object_new_as_super (void)
+{
+  return g_object_new (FOO_TYPE_OBJECT, NULL);
+}
+
 /**
  * foo_object_external_type:
  * @object: a #FooObject
diff --git a/tests/scanner/foo.h b/tests/scanner/foo.h
index bd50221..4b20ed7 100644
--- a/tests/scanner/foo.h
+++ b/tests/scanner/foo.h
@@ -113,8 +113,9 @@ struct _FooObjectClass
 gint                  foo_init                     (void);
 
 GType                 foo_object_get_type          (void) G_GNUC_CONST;
-FooObject*            foo_object_new               ();
+FooObject*            foo_object_new               (void);
 UtilityObject*        foo_object_external_type     (FooObject *object);
+GObject*              foo_object_new_as_super      (void);
 
 void                  foo_object_various           (FooObject *object, void *data, GType some_type);