[matroska] r761 - trunk/RbMatroska

Author: mosu
Date: 2004-09-08 20:27:18 +0400 (Wed, 08 Sep 2004)
New Revision: 761

Modified:
   trunk/RbMatroska/ebml.rb
Log:
Added a global "no EBML id" element to Ebml::Id. Raise an exception if map_ids has not been called prior to reading elements.

Modified: trunk/RbMatroska/ebml.rb
===================================================================
--- trunk/RbMatroska/ebml.rb	2004-09-08 16:25:20 UTC (rev 760)
+++ trunk/RbMatroska/ebml.rb	2004-09-08 16:27:18 UTC (rev 761)
@@ -62,6 +62,11 @@
       format = "(0x%0" + (@size * 2).to_s + "x, %d)"
       return sprintf(format, @value, @size)
     end
+
+    def Id.none
+      @@none = Id.new(-1, -1)
+      return @@none
+    end
   end                           # class Id
 
   class Element
@@ -80,8 +85,7 @@
     end
 
     def Element.global_id
-      @@no_id ||= Id.new(0, 0)
-      return @@no_id
+      return Id.none
     end
 
     def skip(ef)
@@ -333,6 +337,7 @@
     end
 
     def find_class_for_id(id)
+      raise Error, "IDs not mapped" unless (@id_mapping)
       return @id_mapping[id.value] if (@id_mapping.has_key?(id.value))
       return Element
     end