added class version checks

[sope] / sope-ical / NGiCal / NGVCardStrArrayValue.m

diff --git a/sope-ical/NGiCal/NGVCardStrArrayValue.m b/sope-ical/NGiCal/NGVCardStrArrayValue.m
index decbbbd4352994f4b6ac9122692b0cec286de1fc..e62faba7690b094f6d3634254e69d616725b2ca7 100644 (file)
--- a/sope-ical/NGiCal/NGVCardStrArrayValue.m
+++ b/sope-ical/NGiCal/NGVCardStrArrayValue.m
@@ -24,6 +24,15 @@
 
 @implementation NGVCardStrArrayValue
 
++ (int)version {
+  return [super version] + 0 /* v0 */;
+}
++ (void)initialize {
+  NSAssert2([super version] == 0,
+            @"invalid superclass (%@) version %i !",
+            NSStringFromClass([self superclass]), [super version]);
+}
+
 - (id)initWithArray:(NSArray *)_plist group:(NSString *)_group 
   types:(NSArray *)_types arguments:(NSDictionary *)_a
 {