module ActionDispatch::Routing::Mapper::Base

def default_url_options=(options)
  @set.default_url_options = options
end

def initialize(set) #:nodoc:
  @set = set
end

def match(path, options=nil)
  mapping = Mapping.new(@set, @scope, path, options || {}).to_route
  @set.add_route(*mapping)
  self
end

def mount(app, options = nil)
  if options
    path = options.delete(:at)
  else
    options = app
    app, path = options.find { |k, v| k.respond_to?(:call) }
    options.delete(app) if app
  end
  raise "A rack application must be specified" unless path
  match(path, options.merge(:to => app, :anchor => false, :format => false))
  self
end

def root(options = {})
  match '/', options.reverse_merge(:as => :root)
end