class Tilt::RadiusTemplate

def evaluate(scope, locals, &block)
  context = Class.new(Radius::Context).new
  context.define_tag("yield") do
    block.call
  end
  locals.each do |tag, value|
    context.define_tag(tag) do
      value
    end
  end
  (class << context; self; end).class_eval do
    define_method :tag_missing do |tag, attr, &block|
      scope.__send__(tag)  # any way to support attr as args?
    end
  end
  options = {:tag_prefix => 'r'}.merge(@options)
  parser = Radius::Parser.new(context, options)
  parser.parse(data)
end