[libpeas] Add warnings when a type or method is not found in introspection.

[Steve Frécinaux <sfre src gnome org>]

commit 376d5aa5c745c11394f27bd69879b31239379ef5
Author: Steve Frécinaux <code istique net>
Date:   Wed Jun 23 22:42:57 2010 +0200

    Add warnings when a type or method is not found in introspection.
    
    This makes debugging easier than when non-existing methods just ended
    up not doing anything.

 libpeas/peas-introspection.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)
---
diff --git a/libpeas/peas-introspection.c b/libpeas/peas-introspection.c
index 61e616e..a08011b 100644
--- a/libpeas/peas-introspection.c
+++ b/libpeas/peas-introspection.c
@@ -132,7 +132,11 @@ peas_method_get_info (GType        iface_type,
   repo = g_irepository_get_default ();
   iface_info = g_irepository_find_by_gtype (repo, iface_type);
   if (iface_info == NULL)
-    return NULL;
+    {
+      g_warning ("Type not found in introspection: %s",
+                 g_type_name (iface_type));
+      return NULL;
+    }
 
   switch (g_base_info_get_type (iface_info))
     {
@@ -148,6 +152,13 @@ peas_method_get_info (GType        iface_type,
       func_info = NULL;
     }
 
+  if (func_info == NULL)
+    {
+      g_warning ("Method %s.%s not found",
+                 g_type_name (iface_type),
+                 method_name);
+    }
+
   g_base_info_unref (iface_info);
   return (GICallableInfo *) func_info;
 }