vendor/rails/activesupport/lib/active_support/basic_object.rb

   1 # A base class with no predefined methods that tries to behave like Builder's
   2 # BlankSlate in Ruby 1.9. In Ruby pre-1.9, this is actually the
   3 # Builder::BlankSlate class.
   4 #
   5 # Ruby 1.9 introduces BasicObject which differs slightly from Builder's
   6 # BlankSlate that has been used so far. ActiveSupport::BasicObject provides a
   7 # barebones base class that emulates Builder::BlankSlate while still relying on
   8 # Ruby 1.9's BasicObject in Ruby 1.9.
   9 module ActiveSupport
  10   if defined? ::BasicObject
  11     class BasicObject < ::BasicObject
  12       undef_method :==
  13       undef_method :equal?
  14
  15       # Let ActiveSupport::BasicObject at least raise exceptions.
  16       def raise(*args)
  17         ::Object.send(:raise, *args)
  18       end
  19     end
  20   else
  21     require 'blankslate'
  22     BasicObject = BlankSlate
  23   end
  24 end