gistfile1.rb

class Object
  class Bypass
    instance_methods.each do |m|
      undef_method m unless m =~ /^__/
    end

    def initialize(ref)
      @ref = ref
    end
  
    def method_missing(sym, *args)
      @ref.__send__(sym, *args)
    end
  end
  
  class Assigns
    instance_methods.each do |m|
      undef_method m unless m =~ /^__/
    end
    
    def initialize(ref)
      @ref = ref
    end
    
    def method_missing(sym, *args)
      if sym.to_s =~ /^(.+)=$/
        @ref.instance_variable_set("@#{$1}", args.length == 1 ? args.first : args)
      else
        @ref.instance_variable_get("@#{sym}")
      end
    end
  end

  def bypass
    Bypass.new(self)
  end
  
  def assigns
    Assigns.new(self)
  end
end