class Sinatra::Base

def compile(path)
  keys = []
  if path.respond_to? :to_str
    special_chars = %w{. + ( ) $}
    pattern =
      path.to_str.gsub(/((:\w+)|[\*#{special_chars.join}])/) do |match|
        case match
        when "*"
          keys << 'splat'
          "(.*?)"
        when *special_chars
          Regexp.escape(match)
        else
          keys << $2[1..-1]
          "([^/?#]+)"
        end
      end
    [/^#{pattern}$/, keys]
  elsif path.respond_to?(:keys) && path.respond_to?(:match)
    [path, path.keys]
  elsif path.respond_to? :match
    [path, keys]
  else
    raise TypeError, path
  end
end