top-think /
framework
| Total Complexity | 71 |
| Total Lines | 468 |
| Duplicated Lines | 0 % |
| Coverage | 98.67% |
| Changes | 0 | ||
Complex classes like Container often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Container, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 49 | class Container implements ContainerInterface, ArrayAccess, IteratorAggregate, Countable |
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| 50 | { |
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| 51 | /** |
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| 52 | * 容器对象实例 |
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| 53 | * @var Container|Closure |
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| 54 | */ |
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| 55 | protected static $instance; |
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| 56 | |||
| 57 | /** |
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| 58 | * 容器中的对象实例 |
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| 59 | * @var array |
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| 60 | */ |
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| 61 | protected $instances = []; |
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| 62 | |||
| 63 | /** |
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| 64 | * 容器绑定标识 |
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| 65 | * @var array |
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| 66 | */ |
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| 67 | protected $bind = [ |
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| 68 | 'app' => App::class, |
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| 69 | 'cache' => Cache::class, |
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| 70 | 'config' => Config::class, |
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| 71 | 'console' => Console::class, |
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| 72 | 'cookie' => Cookie::class, |
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| 73 | 'db' => Db::class, |
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| 74 | 'debug' => Debug::class, |
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| 75 | 'env' => Env::class, |
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| 76 | 'event' => Event::class, |
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| 77 | 'http' => Http::class, |
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| 78 | 'lang' => Lang::class, |
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| 79 | 'log' => Log::class, |
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| 80 | 'middleware' => Middleware::class, |
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| 81 | 'request' => Request::class, |
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| 82 | 'response' => Response::class, |
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| 83 | 'route' => Route::class, |
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| 84 | 'session' => Session::class, |
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| 85 | 'validate' => Validate::class, |
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| 86 | 'view' => View::class, |
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| 87 | |||
| 88 | // 接口依赖注入 |
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| 89 | 'Psr\Log\LoggerInterface' => Log::class, |
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| 90 | ]; |
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| 91 | |||
| 92 | /** |
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| 93 | * 获取当前容器的实例（单例） |
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| 94 | * @access public |
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| 95 | * @return static |
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| 96 | */ |
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| 97 | 3 | public static function getInstance() |
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| 98 | { |
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| 99 | 3 | if (is_null(static::$instance)) { |
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| 100 | 1 | static::$instance = new static; |
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| 101 | } |
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| 102 | |||
| 103 | 3 | if (static::$instance instanceof Closure) { |
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| 104 | 1 | return (static::$instance)(); |
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| 105 | } |
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| 106 | |||
| 107 | 3 | return static::$instance; |
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| 108 | } |
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| 109 | |||
| 110 | /** |
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| 111 | * 设置当前容器的实例 |
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| 112 | * @access public |
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| 113 | * @param object|Closure $instance |
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| 114 | * @return void |
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| 115 | */ |
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| 116 | 29 | public static function setInstance($instance): void |
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| 119 | 29 | } |
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| 120 | |||
| 121 | /** |
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| 122 | * 获取容器中的对象实例 不存在则创建 |
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| 123 | * @access public |
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| 124 | * @param string $abstract 类名或者标识 |
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| 125 | * @param array|true $vars 变量 |
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| 126 | * @param bool $newInstance 是否每次创建新的实例 |
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| 127 | * @return object |
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| 128 | */ |
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| 129 | 1 | public static function pull(string $abstract, array $vars = [], bool $newInstance = false) |
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| 132 | } |
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| 133 | |||
| 134 | /** |
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| 135 | * 获取容器中的对象实例 |
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| 136 | * @access public |
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| 137 | * @param string $abstract 类名或者标识 |
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| 138 | * @return object |
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| 139 | */ |
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| 140 | 12 | public function get($abstract) |
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| 147 | } |
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| 148 | |||
| 149 | /** |
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| 150 | * 绑定一个类、闭包、实例、接口实现到容器 |
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| 151 | * @access public |
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| 152 | * @param string|array $abstract 类标识、接口 |
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| 153 | * @param mixed $concrete 要绑定的类、闭包或者实例 |
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| 154 | * @return $this |
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| 155 | */ |
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| 156 | 9 | public function bind($abstract, $concrete = null) |
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| 169 | } |
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| 170 | |||
| 171 | /** |
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| 172 | * 绑定一个类实例到容器 |
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| 173 | * @access public |
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| 174 | * @param string $abstract 类名或者标识 |
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| 175 | * @param object $instance 类的实例 |
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| 176 | * @return $this |
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| 177 | */ |
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| 178 | 22 | public function instance(string $abstract, $instance) |
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| 179 | { |
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| 180 | 22 | if (isset($this->bind[$abstract])) { |
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| 181 | 19 | $bind = $this->bind[$abstract]; |
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| 182 | |||
| 183 | 19 | if (is_string($bind)) { |
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| 184 | 19 | return $this->instance($bind, $instance); |
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| 185 | } |
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| 186 | } |
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| 187 | |||
| 188 | 22 | $this->instances[$abstract] = $instance; |
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| 189 | |||
| 190 | 22 | return $this; |
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| 191 | } |
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| 192 | |||
| 193 | /** |
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| 194 | * 判断容器中是否存在类及标识 |
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| 195 | * @access public |
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| 196 | * @param string $abstract 类名或者标识 |
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| 197 | * @return bool |
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| 198 | */ |
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| 199 | 12 | public function bound(string $abstract): bool |
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| 202 | } |
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| 203 | |||
| 204 | /** |
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| 205 | * 判断容器中是否存在类及标识 |
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| 206 | * @access public |
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| 207 | * @param string $name 类名或者标识 |
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| 208 | * @return bool |
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| 209 | */ |
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| 210 | 12 | public function has($name): bool |
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| 213 | } |
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| 214 | |||
| 215 | /** |
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| 216 | * 判断容器中是否存在对象实例 |
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| 217 | * @access public |
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| 218 | * @param string $abstract 类名或者标识 |
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| 219 | * @return bool |
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| 220 | */ |
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| 221 | 4 | public function exists(string $abstract): bool |
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| 222 | { |
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| 223 | 4 | if (isset($this->bind[$abstract])) { |
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| 224 | 3 | $bind = $this->bind[$abstract]; |
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| 225 | |||
| 226 | 3 | if (is_string($bind)) { |
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| 227 | 2 | return $this->exists($bind); |
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| 228 | } |
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| 229 | } |
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| 230 | |||
| 231 | 4 | return isset($this->instances[$abstract]); |
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| 232 | } |
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| 233 | |||
| 234 | /** |
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| 235 | * 创建类的实例 已经存在则直接获取 |
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| 236 | * @access public |
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| 237 | * @param string $abstract 类名或者标识 |
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| 238 | * @param array $vars 变量 |
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| 239 | * @param bool $newInstance 是否每次创建新的实例 |
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| 240 | * @return mixed |
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| 241 | */ |
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| 242 | 16 | public function make(string $abstract, array $vars = [], bool $newInstance = false) |
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| 265 | } |
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| 266 | |||
| 267 | /** |
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| 268 | * 删除容器中的对象实例 |
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| 269 | * @access public |
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| 270 | * @param string $name 类名或者标识 |
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| 271 | * @return void |
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| 272 | */ |
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| 273 | 2 | public function delete($name) |
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| 285 | } |
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| 286 | 2 | } |
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| 287 | |||
| 288 | /** |
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| 289 | * 执行函数或者闭包方法 支持参数调用 |
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| 290 | * @access public |
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| 291 | * @param mixed $function 函数或者闭包 |
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| 292 | * @param array $vars 参数 |
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| 293 | 1 | * @return mixed |
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| 294 | */ |
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| 295 | 1 | public function invokeFunction($function, array $vars = []) |
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| 296 | { |
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| 297 | try { |
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| 298 | $reflect = new ReflectionFunction($function); |
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| 299 | |||
| 300 | $args = $this->bindParams($reflect, $vars); |
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| 301 | |||
| 302 | return call_user_func_array($function, $args); |
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| 303 | 1 | } catch (ReflectionException $e) { |
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| 304 | throw new Exception('function not exists: ' . $function . '()'); |
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| 305 | 1 | } |
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| 306 | 1 | } |
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| 307 | |||
| 308 | 1 | /** |
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| 309 | * 调用反射执行类的方法 支持参数绑定 |
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| 310 | * @access public |
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| 311 | * @param mixed $method 方法 |
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| 312 | * @param array $vars 参数 |
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| 313 | * @return mixed |
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| 314 | */ |
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| 315 | public function invokeMethod($method, array $vars = []) |
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| 316 | { |
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| 317 | 5 | try { |
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| 318 | if (is_array($method)) { |
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| 319 | $class = is_object($method[0]) ? $method[0] : $this->invokeClass($method[0]); |
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| 320 | 5 | $reflect = new ReflectionMethod($class, $method[1]); |
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| 321 | } else { |
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| 322 | 4 | // 静态方法 |
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| 323 | $reflect = new ReflectionMethod($method); |
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| 324 | 4 | } |
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| 325 | 1 | ||
| 326 | 1 | $args = $this->bindParams($reflect, $vars); |
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| 327 | |||
| 328 | return $reflect->invokeArgs($class ?? null, $args); |
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| 329 | } catch (ReflectionException $e) { |
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| 330 | if (is_array($method)) { |
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| 331 | $class = is_object($method[0]) ? get_class($method[0]) : $method[0]; |
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| 332 | $callback = $class . '::' . $method[1]; |
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| 333 | } else { |
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| 334 | $callback = $method; |
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| 335 | } |
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| 336 | |||
| 337 | 3 | throw new Exception('method not exists: ' . $callback . '()'); |
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| 338 | } |
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| 339 | } |
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| 340 | 3 | ||
| 341 | 3 | /** |
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| 342 | 3 | * 调用反射执行类的方法 支持参数绑定 |
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| 343 | * @access public |
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| 344 | * @param object $instance 对象实例 |
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| 345 | 1 | * @param mixed $reflect 反射类 |
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| 346 | * @param array $vars 参数 |
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| 347 | * @return mixed |
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| 348 | 2 | */ |
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| 349 | public function invokeReflectMethod($instance, $reflect, array $vars = []) |
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| 350 | 2 | { |
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| 351 | 1 | $args = $this->bindParams($reflect, $vars); |
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| 352 | 1 | ||
| 353 | 1 | return $reflect->invokeArgs($instance, $args); |
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| 354 | 1 | } |
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| 355 | |||
| 356 | /** |
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| 357 | * 调用反射执行callable 支持参数绑定 |
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| 358 | * @access public |
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| 359 | 1 | * @param mixed $callable |
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| 360 | * @param array $vars 参数 |
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| 361 | * @return mixed |
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| 362 | */ |
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| 363 | public function invoke($callable, array $vars = []) |
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| 364 | { |
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| 365 | if ($callable instanceof Closure) { |
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| 366 | return $this->invokeFunction($callable, $vars); |
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| 367 | } |
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| 368 | |||
| 369 | return $this->invokeMethod($callable, $vars); |
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| 370 | } |
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| 371 | 1 | ||
| 372 | /** |
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| 373 | 1 | * 调用反射执行类的实例化 支持依赖注入 |
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| 374 | * @access public |
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| 375 | 1 | * @param string $class 类名 |
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| 376 | * @param array $vars 参数 |
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| 377 | * @return mixed |
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| 378 | */ |
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| 379 | public function invokeClass(string $class, array $vars = []) |
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| 380 | { |
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| 381 | try { |
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| 382 | $reflect = new ReflectionClass($class); |
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| 383 | |||
| 384 | if ($reflect->hasMethod('__make')) { |
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| 385 | 2 | $method = new ReflectionMethod($class, '__make'); |
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| 386 | |||
| 387 | 2 | if ($method->isPublic() && $method->isStatic()) { |
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| 388 | 1 | $args = $this->bindParams($method, $vars); |
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| 389 | return $method->invokeArgs(null, $args); |
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| 390 | } |
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| 391 | 2 | } |
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| 392 | |||
| 393 | $constructor = $reflect->getConstructor(); |
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| 394 | |||
| 395 | $args = $constructor ? $this->bindParams($constructor, $vars) : []; |
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| 396 | |||
| 397 | return $reflect->newInstanceArgs($args); |
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| 398 | } catch (ReflectionException $e) { |
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| 399 | throw new ClassNotFoundException('class not exists: ' . $class, $class); |
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| 400 | } |
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| 401 | 15 | } |
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| 402 | |||
| 403 | /** |
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| 404 | 15 | * 绑定参数 |
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| 405 | * @access protected |
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| 406 | 14 | * @param \ReflectionMethod|\ReflectionFunction $reflect 反射类 |
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| 407 | 11 | * @param array $vars 参数 |
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| 408 | * @return array |
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| 409 | 11 | */ |
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| 410 | 11 | protected function bindParams($reflect, array $vars = []): array |
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| 411 | 11 | { |
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| 412 | if ($reflect->getNumberOfParameters() == 0) { |
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| 413 | return []; |
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| 414 | } |
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| 415 | 11 | ||
| 416 | // 判断数组类型 数字数组时按顺序绑定参数 |
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| 417 | 11 | reset($vars); |
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| 418 | $type = key($vars) === 0 ? 1 : 0; |
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| 419 | 11 | $params = $reflect->getParameters(); |
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| 420 | 1 | $args = []; |
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| 421 | 1 | ||
| 422 | foreach ($params as $param) { |
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| 423 | $name = $param->getName(); |
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| 424 | $lowerName = App::parseName($name); |
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| 425 | $class = $param->getClass(); |
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| 426 | |||
| 427 | if ($class) { |
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| 428 | $args[] = $this->getObjectParam($class->getName(), $vars); |
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| 429 | } elseif (1 == $type && !empty($vars)) { |
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| 430 | $args[] = array_shift($vars); |
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| 431 | } elseif (0 == $type && isset($vars[$name])) { |
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| 432 | 17 | $args[] = $vars[$name]; |
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| 433 | } elseif (0 == $type && isset($vars[$lowerName])) { |
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| 434 | 17 | $args[] = $vars[$lowerName]; |
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| 435 | 6 | } elseif ($param->isDefaultValueAvailable()) { |
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| 436 | $args[] = $param->getDefaultValue(); |
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| 437 | } else { |
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| 438 | throw new InvalidArgumentException('method param miss:' . $name); |
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| 439 | 11 | } |
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| 440 | 11 | } |
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| 441 | 11 | ||
| 442 | 11 | return $args; |
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| 443 | } |
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| 444 | 11 | ||
| 445 | 11 | /** |
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| 446 | 11 | * 获取对象类型的参数值 |
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| 447 | 11 | * @access protected |
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| 448 | * @param string $className 类名 |
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| 449 | 11 | * @param array $vars 参数 |
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| 450 | 11 | * @return mixed |
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| 451 | 9 | */ |
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| 452 | 1 | protected function getObjectParam(string $className, array &$vars) |
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| 453 | 9 | { |
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| 454 | 1 | $array = $vars; |
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| 455 | 9 | $value = array_shift($array); |
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| 456 | 1 | ||
| 457 | 9 | if ($value instanceof $className) { |
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| 458 | 9 | $result = $value; |
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| 459 | array_shift($vars); |
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| 460 | } else { |
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| 461 | $result = $this->make($className); |
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| 462 | } |
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| 463 | |||
| 464 | 11 | return $result; |
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| 465 | } |
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| 466 | |||
| 467 | public function __set($name, $value) |
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| 470 | } |
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| 471 | |||
| 472 | public function __get($name) |
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| 473 | { |
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| 474 | 11 | return $this->get($name); |
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| 475 | } |
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| 476 | 11 | ||
| 477 | 11 | public function __isset($name): bool |
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| 480 | 1 | } |
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| 481 | 1 | ||
| 482 | public function __unset($name) |
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| 485 | } |
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| 486 | 11 | ||
| 487 | public function offsetExists($key) |
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| 490 | } |
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| 491 | 1 | ||
| 492 | 1 | public function offsetGet($key) |
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| 495 | } |
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| 496 | 11 | ||
| 497 | public function offsetSet($key, $value) |
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| 498 | { |
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| 499 | 1 | $this->bind($key, $value); |
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| 500 | } |
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| 501 | 1 | ||
| 502 | public function offsetUnset($key) |
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| 503 | { |
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| 504 | 2 | $this->delete($key); |
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| 505 | } |
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| 506 | 2 | ||
| 507 | 2 | //Countable |
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| 508 | public function count() |
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| 509 | 1 | { |
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| 510 | return count($this->instances); |
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| 511 | 1 | } |
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| 512 | |||
| 513 | //IteratorAggregate |
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| 514 | 1 | public function getIterator() |
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| 517 | } |
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| 518 | } |
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| 519 |
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