/**
 * @path("/hw")
 */
class HelloWorld
{
  /** 
   * @route({"GET","/"})
   */
  public function doSomething() {
    return "Hello World!";
  }
}

/**
 * 用户权限验证
 * @path("/tokens/") 
 */
class Tokens
{ 
  /**
   * 登录
   * 通过用户名密码授权
   * @route({"POST","/accounts/"}) 
   * @param({"account", "$._POST.account"}) 账号
   * @param({"password", "$._POST.password"}) 密码
   * 
   * @throws ({"InvalidPassword", "res", "403 Forbidden", {"error":"InvalidPassword"} }) 用户名或密码无效
   * 
   * @return({"body"})  
   * 返回token，同cookie中的token相同,
   * {"token":"xxx", "uid" = "xxx"}
   *
   * @return({"cookie","token","$token","+365 days","/"}) 通过cookie返回token
   * @return({"cookie","uid","$uid","+365 days","/"}) 通过cookie返回uid
   */
  public function createTokenByAccounts($account, $password, &$token,&$uid){
    //验证用户
    $uid = $this->users->verifyPassword($account, $password);
    Verify::isTrue($uid, new InvalidPassword($account));
    $token = ...;
    return ['token'=>$token, 'uid'=>$uid];
  } 
  /**
   * @property({"default":"@Users"})  依赖的属性，由框架注入
   * @var Users
   */
  public $users;
}

/** @path(/myclass) */
class MyClass{

  /**
  * @route({"GET","/do"})
  * @param({"arg0","$._GET.arg0"})
  */
  public doSomething($arg0){
    return Sql::select('xxx')->from('table_xxx')->where( 'xxx = ?', $arg0)->get($this->db);
  }
  /**
   * 依赖注入PDO实例
   * @property
   * @var PDO
   */
  public $db;
}

{
  {
    "MyClass":{
      "properties":{
        "db":"@db1"   
      }
    },
  },
  "db1":{
    "singleton":true,
    "class":"PDO",
    "pass_by_construct":true,
    "properties":{
      "dsn":"mysql:host=127.0.0.1;dbname=xxx",
      "username":"xxxx",
      "passwd":"xxxx"      
    }
  },
}