class Cucumber::Core::Event

def self.new(*events)
  # Use normal constructor for subclasses of Event
  return super if ancestors.index(Event) > 0
  Class.new(Event) do
    # NB: We need to use metaprogramming here instead of direct variable obtainment
    # because JRuby does not guarantee the order in which variables are defined is equivalent
    # to the order in which they are obtainable
    #
    # See https://github.com/jruby/jruby/issues/7988 for more info
    attr_reader(*events)
    define_method(:initialize) do |*attributes|
      events.zip(attributes) do |name, value|
        instance_variable_set(:"@#{name}", value)
      end
    end
    define_method(:attributes) do
      events.map { |var| instance_variable_get(:"@#{var}") }
    end
    define_method(:to_h) do
      events.zip(attributes).to_h
    end
    def event_id
      self.class.event_id
    end
  end
end

def event_id
  self.class.event_id
end

def event_id
  underscore(name.split('::').last).to_sym
end

def underscore(string)
  string
    .to_s
    .gsub('::', '/')
    .gsub(/([A-Z]+)([A-Z][a-z])/, '\1_\2')
    .gsub(/([a-z\d])([A-Z])/, '\1_\2')
    .tr('-', '_')
    .downcase
end