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 String
      response.write v
    when Array
      throw :halt, v
    else
      raise Roda::RodaError, "singular argument to #halt must be Integer, String, or Array"
    end
  when 2
    resp = response
    resp.status = res[0]
    resp.write res[1]
  when 3
    resp = response
    resp.status = res[0]
    resp.headers.merge!(res[1])
    resp.write res[2]
  else
    raise Roda::RodaError, "too many arguments given to #halt (accepts 0-3, received #{res.length})"
  end
  super()
end