Bug 557383 - Virtual method support

Broadly speaking, this change adds the concept of <vfunc> to the .gir.
The typelib already had most of the infrastructure for virtual functions,
though there is one API addition.

The scanner assumes that any class callback slot that doesn't match
a signal name is a virtual.  In the .gir, we write out *both* the <method>
wrapper and a <vfunc>.  If we can determine an association between
them (based on the names matching, or a new Virtual: annotation),
then we notate that in the .gir.

The typelib gains an association from the vfunc to the function, if
it exists.  This will be useful for bindings since they already know
how to consume FunctionInfo.

1 files changed, 25 insertions, 0 deletions

diff --git a/tests/everything/everything.c b/tests/everything/everything.c
index 75842bf..c597f85 100644
--- a/tests/everything/everything.c
+++ b/tests/everything/everything.c
@@ -789,6 +789,12 @@ test_obj_dispose (GObject *gobject)
   G_OBJECT_CLASS (test_obj_parent_class)->dispose (gobject);
 }
 
+static int
+test_obj_default_matrix (TestObj *obj, const char *somestr)
+{
+  return 42;
+}
+
 static void
 test_obj_class_init (TestObjClass *klass)
 {
@@ -819,6 +825,8 @@ test_obj_class_init (TestObjClass *klass)
   g_object_class_install_property (gobject_class,
                                    PROP_TEST_OBJ_BARE,
                                    pspec);
+
+  klass->matrix = test_obj_default_matrix;
 }
 
 static void
@@ -854,6 +862,23 @@ test_obj_static_method (int x)
 }
 
 /**
+ * test_obj_do_matrix:
+ * @obj: A #TestObj
+ * @somestr: Meaningless string
+ *
+ * This method is virtual.  Notably its name differs from the virtual
+ * slot name, which makes it useful for testing bindings handle this
+ * case.
+ *
+ * Virtual: matrix
+ */
+int
+test_obj_do_matrix (TestObj *obj, const char *somestr)
+{
+  return TEST_OBJ_GET_CLASS (obj)->matrix (obj, somestr);
+}
+
+/**
  * test_callback:
  * @callback: (scope call):
  *