Added Description#inherit.

[redact.git] / lib / redact / part.rb

diff --git a/lib/redact/part.rb b/lib/redact/part.rb
index 692a48793d757ab87d3a1c44ece009ed61a2be81..3446de26c7d41b88007521d1fae4bfbd10f7d748 100644 (file)
--- a/lib/redact/part.rb
+++ b/lib/redact/part.rb
@@ -1,5 +1,5 @@
 #--
-# $Id: part.rb 69 2005-09-19 20:17:07Z tilman $
+# $Id: part.rb 70 2005-09-21 15:56:55Z tilman $
 #
 # Copyright (c) 2005 Tilman Sauerbeck (tilman at code-monkey de)
 #
@@ -245,6 +245,20 @@ module Redact
                        @color_class = ""
                end
 
+               def inherit(other)
+                       unless other.is_a?(Description)
+                               raise(ArgumentError, "Cannot inherit from description")
+                       end
+
+                       prot = ["@name", "@value"]
+
+                       (instance_variables - prot).each do |v|
+                               n = other.instance_variable_get(v.intern)
+                               n = n.dup rescue n
+                               instance_variable_set(v.intern, n)
+                       end
+               end
+
                def visible=(v)
                        @visible = (v == true)
                end