module Roda::RodaPlugins::Halt::RequestMethods

def halt(*res)
  case res.length
  when 0 # do nothing
  when 1
    case v = res[0]
    when Integer
      response.status = v
    when Array
      throw :halt, v
    else
      if result = block_result_body(v)
        response.write(result)
      else
        raise Roda::RodaError, "singular argument given to #halt not handled: #{v.inspect}"
      end
    end
  when 2
    resp = response
    resp.status = res[0]
    resp.write(block_result_body(res[1]))
  when 3
    resp = response
    resp.status = res[0]
    resp.headers.merge!(res[1])
    resp.write(block_result_body(res[2]))
  else
    raise Roda::RodaError, "too many arguments given to #halt (accepts 0-3, received #{res.length})"
  end
  super()
end