loci: add a convenience wrapper around of_object_id_str
diff --git a/c_gen/c_code_gen.py b/c_gen/c_code_gen.py
index 191fcd3..6556d3b 100644
--- a/c_gen/c_code_gen.py
+++ b/c_gen/c_code_gen.py
@@ -426,6 +426,14 @@
 #endif /* OF_DEBUG_DUMP */
 """)
 
+    out.write("""
+static inline const char *
+of_class_name(of_object_t *obj)
+{
+    return of_object_id_str[obj->object_id];
+}
+""")
+
     out.write("\n#endif /* Top header file */\n")
 
 def match_c_gen(out, name):