class ActionDispatch::ExceptionWrapper

def application_trace
  clean_backtrace(:silent)
end

def backtrace_cleaner
  @backtrace_cleaner ||= @env['action_dispatch.backtrace_cleaner']
end

def clean_backtrace(*args)
  if backtrace_cleaner
    backtrace_cleaner.clean(@exception.backtrace, *args)
  else
    @exception.backtrace
  end
end

def framework_trace
  clean_backtrace(:noise)
end

def full_trace
  clean_backtrace(:all)
end

def initialize(env, exception)
  @env = env
  @exception = original_exception(exception)
end

def original_exception(exception)
  if registered_original_exception?(exception)
    exception.original_exception
  else
    exception
  end
end

def registered_original_exception?(exception)
  exception.respond_to?(:original_exception) && @@rescue_responses.has_key?(exception.original_exception.class.name)
end

def rescue_template
  @@rescue_templates[@exception.class.name]
end

def status_code
  Rack::Utils.status_code(@@rescue_responses[@exception.class.name])
end