Koa::Context

Context组件代理了Request与Response中的方法和属性，简化了使用方式与中间件接口，这里用php的魔术方法来处理：

  1. <?php
  3. class Context
  4. {
  5.     public $app;
  6.     /** @var Request */
  7.     public $request;
  8.     /** @var Response */
  9.     public $response;
  10.     /** @var \swoole_http_request */
  11.     public $req;
  12.     /** @var \swoole_http_response */
  13.     public $res;
  14.     public $state = [];
  15.     public $respond = true;
  16.     /** @var string */
  17.     public $body;
  18.     /** @var int */
  19.     public $status;
  21.     public function __call($name, $arguments)
  22.     {
  23.         $fn = [$this->response, $name];
  24.         return $fn(...$arguments);
  25.     }
  27.     public function __get($name)
  28.     {
  29.         return $this->request->$name;
  30.     }
  32.     public function __set($name, $value)
  33.     {
  34.         $this->response->$name = $value;
  35.     }
  37.     // thr[ο]w ο 为希腊字母 Ομικρον
  38.     public function thrοw($status, $message)
  39.     {
  40.         if ($message instanceof \Exception) {
  41.             $ex = $message;
  42.             throw new HttpException($status, $ex->getMessage(), $ex->getCode(), $ex->getPrevious());
  43.         } else {
  44.             throw new HttpException($status, $message);
  45.         }
  46.     }
  47. }