Refactored the bacnet file object to be storage agnostic with callbacks. (#1056)

src/bacnet/basic/object/acc.c

@@ -27,17 +27,20 @@ struct object_data {
 static struct object_data Object_List[MAX_ACCUMULATORS];
 
 /* These three arrays are used by the ReadPropertyMultiple handler */
-static const int Properties_Required[] = { PROP_OBJECT_IDENTIFIER,
-                                           PROP_OBJECT_NAME,
-                                           PROP_OBJECT_TYPE,
-                                           PROP_PRESENT_VALUE,
-                                           PROP_STATUS_FLAGS,
-                                           PROP_EVENT_STATE,
-                                           PROP_OUT_OF_SERVICE,
-                                           PROP_SCALE,
-                                           PROP_UNITS,
-                                           PROP_MAX_PRES_VALUE,
-                                           -1 };
+static const int Properties_Required[] = {
+    /* unordered list of required properties */
+    PROP_OBJECT_IDENTIFIER,
+    PROP_OBJECT_NAME,
+    PROP_OBJECT_TYPE,
+    PROP_PRESENT_VALUE,
+    PROP_STATUS_FLAGS,
+    PROP_EVENT_STATE,
+    PROP_OUT_OF_SERVICE,
+    PROP_SCALE,
+    PROP_UNITS,
+    PROP_MAX_PRES_VALUE,
+    -1
+};
 
 static const int Properties_Optional[] = { PROP_DESCRIPTION, -1 };