class Cucumber::RbSupport::RbLanguage

def self.cli_snippet_type_options
  SNIPPET_TYPES.keys.sort_by(&:to_s).map do |type|
    SNIPPET_TYPES[type].cli_option_string(type)
  end
end

def begin_rb_scenario(scenario)
  create_world
  extend_world
  connect_world(scenario)
end

def begin_scenario(scenario)
  begin_rb_scenario(scenario)
end

def build_rb_world_factory(world_modules, proc)
  if(proc)
    raise MultipleWorld.new(@world_proc, proc) if @world_proc
    @world_proc = proc
  end
  @world_modules ||= []
  @world_modules += world_modules
end

def check_nil(o, proc)
  if o.nil?
    begin
      raise NilWorld.new
    rescue NilWorld => e
      e.backtrace.clear
      e.backtrace.push(RbSupport.backtrace_line(proc, "World"))
      raise e
    end
  else
    o
  end
end

def connect_world(scenario)
  @current_world.__cucumber_runtime = @runtime
  @current_world.__natural_language = scenario.language
end

def create_world
  if(@world_proc)
    @current_world = @world_proc.call
    check_nil(@current_world, @world_proc)
  else
    @current_world = Object.new
  end
end

def end_scenario
  @current_world = nil
end

def extend_world
  @current_world.extend(RbWorld)
  MultiTest.extend_with_best_assertion_library(@current_world)
  (@world_modules || []).each do |mod|
    @current_world.extend(mod)
  end
end

def initialize(runtime)
  @runtime = runtime
  @step_definitions = []
  RbDsl.rb_language = self
  @world_proc = @world_modules = nil
end

def load_code_file(code_file)
  load File.expand_path(code_file) # This will cause self.add_step_definition, self.add_hook, and self.add_transform to be called from RbDsl
end

def register_rb_hook(phase, tag_expressions, proc)
  add_hook(phase, RbHook.new(self, tag_expressions, proc))
end

def register_rb_step_definition(regexp, proc_or_sym, options)
  step_definition = RbStepDefinition.new(self, regexp, proc_or_sym, options)
  @step_definitions << step_definition
  step_definition
end

def register_rb_transform(regexp, proc)
  add_transform(RbTransform.new(self, regexp, proc))
end

def snippet_text(code_keyword, step_name, multiline_arg, snippet_type = :regexp)
  snippet_class = typed_snippet_class(snippet_type)
  snippet_class.new(code_keyword, step_name, multiline_arg).to_s
end

def step_matches(name_to_match, name_to_format)
  @step_definitions.map do |step_definition|
    if(arguments = step_definition.arguments_from(name_to_match))
      StepMatch.new(step_definition, name_to_match, name_to_format, arguments)
    else
      nil
    end
  end.compact
end

def typed_snippet_class(type)
  SNIPPET_TYPES.fetch(type || :regexp)
end