class Cucumber::Ast::Scenario

def accept(visitor)
  return if Cucumber.wants_to_quit
  
  with_visitor(visitor) do
    visitor.visit_comment(@comment) unless @comment.empty?
    visitor.visit_tags(@tags)
    visitor.visit_scenario_name(@keyword, @name, file_colon_line(@line), source_indent(first_line_length))
    skip_invoke! if @background.failed?
    visitor.step_mother.with_hooks(self, skip_hooks?) do
      skip_invoke! if failed?
      visitor.visit_steps(@steps)
    end
    @executed = true
  end
end

def exception
  @exception || @steps.exception
end

def fail!(exception)
  @exception = exception
  @current_visitor.visit_exception(@exception, :failed)
end

def failed?
  @steps.failed? || !!@exception
end

def init
  return if @steps
  @background.init
  @background.feature_elements << self
  attach_steps(@raw_steps)
  step_invocations = @raw_steps.map{|step| step.step_invocation}
  @steps = @background.step_collection(step_invocations)
end

def initialize(background, comment, tags, line, keyword, name, raw_steps)
  @background = background || EmptyBackground.new
  @comment, @tags, @line, @keyword, @name, @raw_steps = comment, tags, line, keyword, name, raw_steps
  @exception = @executed = nil
end

def passed?
  !failed?
end

def skip_hooks?
  @background.failed? || @executed
end

def skip_invoke!
  @steps.each{|step_invocation| step_invocation.skip_invoke!}
  @feature.next_feature_element(self) do |next_one|
    next_one.skip_invoke!
  end
end

def status
  return :failed if @exception
  @steps.status
end

def to_sexp
  sexp = [:scenario, @line, @keyword, @name]
  comment = @comment.to_sexp
  sexp += [comment] if comment
  tags = @tags.to_sexp
  sexp += tags if tags.any?
  steps = @steps.to_sexp
  sexp += steps if steps.any?
  sexp
end

def with_visitor(visitor)
  @current_visitor = visitor
  yield
  @current_visitor = nil
end