class Cucumber::Ast::StepInvocation

def accept(visitor)
  return if Cucumber.wants_to_quit
  invoke(visitor.step_mother, visitor.options)
  visit_step_result(visitor)
end

def actual_keyword
  repeat_keywords = [language.but_keywords(false), language.and_keywords(false)].flatten
  if repeat_keywords.index(@step.keyword) && previous
    previous.actual_keyword
  else
    keyword
  end
end

def background?
  @background
end

def backtrace
  @backtrace
end

def backtrace_line
  @step.backtrace_line
end

def dom_id
  @step.dom_id
end

def failed(options, e, clear_backtrace)
  e = filter_backtrace(e)
  e.set_backtrace([]) if clear_backtrace
  e.backtrace << @step.backtrace_line unless @step.backtrace_line.nil?
  @exception = e
  if(options[:strict] || !(Undefined === e) || e.nested?)
    @reported_exception = e
  else
    @reported_exception = nil
  end
end

def file_colon_line
  @step.file_colon_line
end

def filter_backtrace(e)
  return e if Cucumber.use_full_backtrace
  pwd = /#{Regexp.escape(Dir.pwd)}\//m
  (e.backtrace || []).each{|line| line.gsub!(pwd, "./")}
  
  filtered = (e.backtrace || []).reject do |line|
    BACKTRACE_FILTER_PATTERNS.detect { |p| line =~ p }
  end
  
  if Cucumber::JRUBY && e.class.name == 'NativeException'
    # JRuby's NativeException ignores #set_backtrace.
    # We're fixing it.
    e.instance_eval do
      def set_backtrace(backtrace)
        @backtrace = backtrace
      end
      def backtrace
        @backtrace
      end
    end
  end
  e.set_backtrace(filtered)
  e
end

def find_step_match!(step_mother)
  return if @step_match
  begin
    @step_match = step_mother.step_match(@name)
  rescue Undefined => e
    failed(step_mother.options, e, true)
    status!(:undefined)
    @step_match = NoStepMatch.new(@step, @name)
  rescue Ambiguous => e
    failed(step_mother.options, e, false)
    status!(:failed)
    @step_match = NoStepMatch.new(@step, @name)
  end
  step_mother.step_visited(self)
end

def initialize(step, name, multiline_arg, matched_cells)
  @step, @name, @multiline_arg, @matched_cells = step, name, multiline_arg, matched_cells
  status!(:skipped)
  @skip_invoke = @exception = @step_match = @different_table = @reported_exception = @background = nil
end

def invoke(step_mother, options)
  find_step_match!(step_mother)
  unless @skip_invoke || options[:dry_run] || @exception || @step_collection.exception
    @skip_invoke = true
    begin
      @step_match.invoke(@multiline_arg)
      step_mother.after_step
      status!(:passed)
    rescue Pending => e
      failed(options, e, false)
      status!(:pending)
    rescue Undefined => e
      failed(options, e, false)
      status!(:undefined)
    rescue Cucumber::Ast::Table::Different => e
      @different_table = e.table
      failed(options, e, false)
      status!(:failed)
    rescue Exception => e
      failed(options, e, false)
      status!(:failed)
    end
  end
end

def keyword
  @step.keyword
end

def language
  @step.language
end

def multiline_arg
  @step.multiline_arg
end

def previous
  @step_collection.previous_step(self)
end

def set_backtrace(backtrace)
  @backtrace = backtrace
end

def skip_invoke!
  @skip_invoke = true
end

def source_indent
  @step.feature_element.source_indent(text_length)
end

def status!(status)
  @status = status
  @matched_cells.each do |cell|
    cell.status = status
  end
end

def text_length
  @step.text_length(@name)
end

def to_sexp
  [:step_invocation, @step.line, @step.keyword, @name, (@multiline_arg.nil? ? nil : @multiline_arg.to_sexp)].compact
end

def visit_step_result(visitor)
  visitor.visit_step_result(
    keyword,
    @step_match,
    (@different_table || @multiline_arg),
    @status,
    @reported_exception,
    source_indent,
    @background
  )
end

def worst_status(statuses)
  SEVERITY[statuses.map{|status| SEVERITY.index(status)}.max]
end