An example of using Docile for @lohqua re https://github.com/ms-ati/docile/issues/19

Gemfile

source 'https://rubygems.org'

gem 'docile'

my_order.rb

#
# Here's the code we actually want to run, which uses the Pizza DSL
#
# To run:
#   bundle install # so that you have docile
#   bundle exec ruby -I. my_order.rb
#
require 'pizza_dsl'

@sauce_level = :extra

my_pizza = pizza do
  cheese
  pepperoni
  sauce @sauce_level
end

require 'pp'
pp my_pizza

pizza_builder.rb

Pizza = Struct.new(:cheese, :pepperoni, :bacon, :sauce)

class PizzaBuilder
  def cheese(v=true); @cheese = v; self; end
  def pepperoni(v=true); @pepperoni = v; self; end
  def bacon(v=true); @bacon = v; self; end
  def sauce(v=nil); @sauce = v; self; end
  def build
    Pizza.new(!!@cheese, !!@pepperoni, !!@bacon, @sauce)
  end
end

pizza_dsl.rb

require 'docile'
require 'pizza_builder'

def pizza(&block)
  Docile.dsl_eval(PizzaBuilder.new, &block).build
end