[gi] move to using type_info and interface_info instead of arg_info

* only arguments have arg_infos, not return types and instances so
  type_info is much better to pass.  In fact most API that took an
  arg_info simply converted it to a type_info
* In the case of instances for methods we don't even have a type_info.
  Since all instances are interfaces, we also attach the interface_info
  to the interface cache

1 files changed, 9 insertions, 12 deletions

diff --git a/gi/pygi-foreign.c b/gi/pygi-foreign.c
index fa43005a..b7a9b990 100644
--- a/gi/pygi-foreign.c
+++ b/gi/pygi-foreign.c
@@ -107,15 +107,14 @@ pygi_struct_foreign_lookup (GIBaseInfo *base_info)
 }
 
 gboolean
-pygi_struct_foreign_convert_to_g_argument (PyObject       *value,
-                                           GITypeInfo     *type_info,
-                                           GITransfer      transfer,
-                                           GIArgument      *arg)
+pygi_struct_foreign_convert_to_g_argument (PyObject        *value,
+                                           GIInterfaceInfo *interface_info,
+                                           GITransfer       transfer,
+                                           GIArgument       *arg)
 {
     PyObject *result;
-    GIBaseInfo *base_info = g_type_info_get_interface (type_info);
+    PyGIBaseInfo *base_info = (PyGIBaseInfo *)interface_info;
     PyGIForeignStruct *foreign_struct = pygi_struct_foreign_lookup (base_info);
-    g_base_info_unref (base_info);
 
     if (foreign_struct == NULL) {
         PyErr_Format(PyExc_KeyError, "could not find foreign type %s",
@@ -123,7 +122,7 @@ pygi_struct_foreign_convert_to_g_argument (PyObject       *value,
         return FALSE;
     }
 
-    result = foreign_struct->to_func (value, type_info, transfer, arg);
+    result = foreign_struct->to_func (value, interface_info, transfer, arg);
     if (result == NULL)
         return FALSE;
 
@@ -132,18 +131,16 @@ pygi_struct_foreign_convert_to_g_argument (PyObject       *value,
 }
 
 PyObject *
-pygi_struct_foreign_convert_from_g_argument (GITypeInfo *type_info,
+pygi_struct_foreign_convert_from_g_argument (GIInterfaceInfo *interface_info,
                                              GIArgument  *arg)
 {
-    GIBaseInfo *base_info = g_type_info_get_interface (type_info);
+    GIBaseInfo *base_info = (GIBaseInfo *)interface_info;
     PyGIForeignStruct *foreign_struct = pygi_struct_foreign_lookup (base_info);
-    g_base_info_unref (base_info);
-
 
     if (foreign_struct == NULL)
         return NULL;
 
-    return foreign_struct->from_func (type_info, arg);
+    return foreign_struct->from_func (interface_info, arg);
 }
 
 PyObject *