lib/active_support/deprecation.rb in activesupport-2.0.2 vs lib/active_support/deprecation.rb in activesupport-2.0.4

@@ -1,6 +1,7 @@
 require 'yaml'
+require 'delegate'
 
 module ActiveSupport
   module Deprecation #:nodoc:
     mattr_accessor :debug
     self.debug = false
@@ -173,9 +174,23 @@
 
         def warn(callstack, called, args)
           ActiveSupport::Deprecation.warn("#{@var} is deprecated! Call #{@method}.#{called} instead of #{@var}.#{called}. Args: #{args.inspect}", callstack)
         end
     end
+    
+    class DeprecatedInstanceVariable < Delegator
+      def initialize(value, method)
+        super(value)
+        @method = method
+        @value = value
+      end
+
+      def __getobj__
+        ActiveSupport::Deprecation.warn("Instance variable @#{@method} is deprecated! Call instance method #{@method} instead.")
+        @value
+      end
+    end
+    
   end
 end
 
 class Module
   include ActiveSupport::Deprecation::ClassMethods