top-think /
framework
| Total Complexity | 73 |
| Total Lines | 500 |
| Duplicated Lines | 0 % |
| Coverage | 98.78% |
| 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 | * 容器标识别名 |
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| 94 | * @var array |
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| 95 | */ |
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| 96 | protected $alias = []; |
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| 97 | |||
| 98 | /** |
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| 99 | * 获取当前容器的实例（单例） |
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| 100 | * @access public |
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| 101 | * @return static |
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| 102 | */ |
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| 103 | 3 | public static function getInstance() |
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| 104 | { |
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| 105 | 3 | if (is_null(static::$instance)) { |
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| 106 | 1 | static::$instance = new static; |
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| 107 | } |
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| 108 | |||
| 109 | 3 | if (static::$instance instanceof Closure) { |
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| 110 | 1 | return (static::$instance)(); |
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| 111 | } |
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| 112 | |||
| 113 | 3 | return static::$instance; |
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| 114 | } |
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| 115 | |||
| 116 | /** |
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| 117 | * 设置当前容器的实例 |
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| 118 | * @access public |
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| 119 | * @param object|Closure $instance |
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| 120 | * @return void |
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| 121 | */ |
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| 122 | 29 | public static function setInstance($instance): void |
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| 125 | 29 | } |
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| 126 | |||
| 127 | /** |
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| 128 | * 获取容器中的对象实例 不存在则创建 |
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| 129 | * @access public |
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| 130 | * @param string $abstract 类名或者标识 |
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| 131 | * @param array|true $vars 变量 |
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| 132 | * @param bool $newInstance 是否每次创建新的实例 |
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| 133 | * @return object |
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| 134 | */ |
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| 135 | 1 | public static function pull(string $abstract, array $vars = [], bool $newInstance = false) |
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| 136 | { |
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| 137 | 1 | return static::getInstance()->make($abstract, $vars, $newInstance); |
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| 138 | } |
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| 139 | |||
| 140 | /** |
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| 141 | * 获取容器中的对象实例 |
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| 142 | * @access public |
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| 143 | * @param string $abstract 类名或者标识 |
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| 144 | * @return object |
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| 145 | */ |
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| 146 | 12 | public function get($abstract) |
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| 147 | { |
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| 148 | 12 | if ($this->has($abstract)) { |
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| 149 | 11 | return $this->make($abstract); |
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| 150 | } |
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| 151 | |||
| 152 | 1 | throw new ClassNotFoundException('class not exists: ' . $abstract, $abstract); |
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| 153 | } |
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| 154 | |||
| 155 | /** |
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| 156 | * 绑定一个类、闭包、实例、接口实现到容器 |
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| 157 | * @access public |
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| 158 | * @param string|array $abstract 类标识、接口 |
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| 159 | * @param mixed $concrete 要绑定的类、闭包或者实例 |
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| 160 | * @return $this |
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| 161 | */ |
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| 162 | 9 | public function bind($abstract, $concrete = null) |
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| 163 | { |
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| 164 | 9 | if (is_array($abstract)) { |
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| 165 | 4 | $this->bind = array_merge($this->bind, $abstract); |
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| 166 | 6 | } elseif ($concrete instanceof Closure) { |
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| 167 | 3 | $this->bind[$abstract] = $concrete; |
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| 168 | 4 | } elseif (is_object($concrete)) { |
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| 169 | 3 | $this->instance($abstract, $concrete); |
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| 170 | } else { |
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| 171 | 2 | $this->bind[$abstract] = $concrete; |
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| 172 | } |
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| 173 | |||
| 174 | 9 | return $this; |
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| 175 | } |
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| 176 | |||
| 177 | /** |
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| 178 | * 绑定一个类实例到容器 |
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| 179 | * @access public |
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| 180 | * @param string $abstract 类名或者标识 |
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| 181 | * @param object $instance 类的实例 |
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| 182 | * @return $this |
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| 183 | */ |
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| 184 | 22 | public function instance(string $abstract, $instance) |
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| 185 | { |
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| 186 | 22 | if (isset($this->bind[$abstract])) { |
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| 187 | 19 | $bind = $this->bind[$abstract]; |
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| 188 | |||
| 189 | 19 | if (is_string($bind)) { |
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| 190 | 19 | $this->instances[$bind] = $instance; |
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| 191 | 19 | return $this; |
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| 192 | } |
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| 193 | } |
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| 194 | |||
| 195 | 21 | $this->instances[$abstract] = $instance; |
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| 196 | |||
| 197 | 21 | return $this; |
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| 198 | } |
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| 199 | |||
| 200 | /** |
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| 201 | * 判断容器中是否存在类及标识 |
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| 202 | * @access public |
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| 203 | * @param string $abstract 类名或者标识 |
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| 204 | * @return bool |
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| 205 | */ |
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| 206 | 12 | public function bound(string $abstract): bool |
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| 207 | { |
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| 208 | 12 | return isset($this->bind[$abstract]) || isset($this->instances[$abstract]); |
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| 209 | } |
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| 210 | |||
| 211 | /** |
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| 212 | * 判断容器中是否存在类及标识 |
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| 213 | * @access public |
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| 214 | * @param string $name 类名或者标识 |
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| 215 | * @return bool |
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| 216 | */ |
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| 217 | 12 | public function has($name): bool |
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| 218 | { |
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| 219 | 12 | return $this->bound($name); |
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| 220 | } |
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| 221 | |||
| 222 | /** |
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| 223 | * 判断容器中是否存在对象实例 |
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| 224 | * @access public |
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| 225 | * @param string $abstract 类名或者标识 |
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| 226 | * @return bool |
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| 227 | */ |
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| 228 | 4 | public function exists(string $abstract): bool |
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| 229 | { |
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| 230 | 4 | if (isset($this->bind[$abstract])) { |
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| 231 | 3 | $bind = $this->bind[$abstract]; |
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| 232 | |||
| 233 | 3 | if (is_string($bind)) { |
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| 234 | 2 | return isset($this->instances[$bind]); |
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| 235 | } |
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| 236 | } |
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| 237 | |||
| 238 | 4 | return isset($this->instances[$abstract]); |
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| 239 | } |
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| 240 | |||
| 241 | /** |
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| 242 | * 创建类的实例 已经存在则直接获取 |
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| 243 | * @access public |
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| 244 | * @param string $abstract 类名或者标识 |
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| 245 | * @param array $vars 变量 |
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| 246 | * @param bool $newInstance 是否每次创建新的实例 |
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| 247 | * @return mixed |
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| 248 | */ |
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| 249 | 16 | public function make(string $abstract, array $vars = [], bool $newInstance = false) |
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| 250 | { |
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| 251 | 16 | $abstract = $this->alias[$abstract] ?? $abstract; |
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| 252 | |||
| 253 | 16 | if (isset($this->instances[$abstract]) && !$newInstance) { |
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| 254 | 12 | return $this->instances[$abstract]; |
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| 255 | } |
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| 256 | |||
| 257 | 15 | if (isset($this->bind[$abstract])) { |
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| 258 | 13 | $concrete = $this->bind[$abstract]; |
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| 259 | |||
| 260 | 13 | if ($concrete instanceof Closure) { |
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| 261 | 3 | $object = $this->invokeFunction($concrete, $vars); |
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| 262 | } else { |
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| 263 | 10 | $this->alias[$abstract] = $concrete; |
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| 264 | 13 | return $this->make($concrete, $vars, $newInstance); |
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| 265 | } |
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| 266 | } else { |
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| 267 | 12 | $object = $this->invokeClass($abstract, $vars); |
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| 268 | } |
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| 269 | |||
| 270 | 15 | if (!$newInstance) { |
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| 271 | 15 | $this->instances[$abstract] = $object; |
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| 272 | } |
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| 273 | |||
| 274 | 15 | return $object; |
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| 275 | } |
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| 276 | |||
| 277 | /** |
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| 278 | * 删除容器中的对象实例 |
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| 279 | * @access public |
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| 280 | * @param string|array $abstract 类名或者标识 |
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| 281 | * @return void |
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| 282 | */ |
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| 283 | 2 | public function delete($abstract): void |
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| 284 | { |
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| 285 | 2 | foreach ((array) $abstract as $name) { |
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| 286 | 2 | $name = $this->alias[$name] ?? $name; |
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| 287 | |||
| 288 | 2 | if (isset($this->bind[$name])) { |
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| 289 | 1 | $name = $this->bind[$name]; |
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| 290 | } |
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| 291 | |||
| 292 | 2 | if (isset($this->instances[$name])) { |
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| 293 | 2 | unset($this->instances[$name]); |
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| 294 | } |
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| 295 | } |
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| 296 | 2 | } |
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| 297 | |||
| 298 | /** |
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| 299 | * 获取容器中的对象实例 |
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| 300 | * @access public |
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| 301 | * @return array |
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| 302 | */ |
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| 303 | 1 | public function all() |
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| 304 | { |
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| 305 | 1 | return $this->instances; |
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| 306 | } |
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| 307 | |||
| 308 | /** |
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| 309 | * 清除容器中的对象实例 |
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| 310 | * @access public |
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| 311 | * @return void |
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| 312 | */ |
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| 313 | 1 | public function flush(): void |
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| 314 | { |
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| 315 | 1 | $this->instances = []; |
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| 316 | 1 | $this->bind = []; |
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| 317 | 1 | $this->alias = []; |
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| 318 | 1 | } |
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| 319 | |||
| 320 | /** |
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| 321 | * 执行函数或者闭包方法 支持参数调用 |
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| 322 | * @access public |
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| 323 | * @param mixed $function 函数或者闭包 |
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| 324 | * @param array $vars 参数 |
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| 325 | * @return mixed |
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| 326 | */ |
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| 327 | 5 | public function invokeFunction($function, array $vars = []) |
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| 328 | { |
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| 329 | try { |
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| 330 | 5 | $reflect = new ReflectionFunction($function); |
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| 331 | |||
| 332 | 4 | $args = $this->bindParams($reflect, $vars); |
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| 333 | |||
| 334 | 4 | return call_user_func_array($function, $args); |
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| 335 | 1 | } catch (ReflectionException $e) { |
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| 336 | 1 | throw new Exception('function not exists: ' . $function . '()'); |
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| 337 | } |
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| 338 | } |
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| 339 | |||
| 340 | /** |
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| 341 | * 调用反射执行类的方法 支持参数绑定 |
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| 342 | * @access public |
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| 343 | * @param mixed $method 方法 |
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| 344 | * @param array $vars 参数 |
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| 345 | * @return mixed |
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| 346 | */ |
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| 347 | 3 | public function invokeMethod($method, array $vars = []) |
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| 348 | { |
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| 349 | try { |
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| 350 | 3 | if (is_array($method)) { |
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| 351 | 3 | $class = is_object($method[0]) ? $method[0] : $this->invokeClass($method[0]); |
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| 352 | 3 | $reflect = new ReflectionMethod($class, $method[1]); |
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| 353 | } else { |
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| 354 | // 静态方法 |
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| 355 | 1 | $reflect = new ReflectionMethod($method); |
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| 356 | } |
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| 357 | |||
| 358 | 2 | $args = $this->bindParams($reflect, $vars); |
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| 359 | |||
| 360 | 2 | return $reflect->invokeArgs($class ?? null, $args); |
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| 361 | 1 | } catch (ReflectionException $e) { |
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| 362 | 1 | if (is_array($method)) { |
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| 363 | 1 | $class = is_object($method[0]) ? get_class($method[0]) : $method[0]; |
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| 364 | 1 | $callback = $class . '::' . $method[1]; |
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| 365 | } else { |
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| 366 | $callback = $method; |
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| 367 | } |
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| 368 | |||
| 369 | 1 | throw new Exception('method not exists: ' . $callback . '()'); |
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| 370 | } |
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| 371 | } |
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| 372 | |||
| 373 | /** |
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| 374 | * 调用反射执行类的方法 支持参数绑定 |
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| 375 | * @access public |
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| 376 | * @param object $instance 对象实例 |
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| 377 | * @param mixed $reflect 反射类 |
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| 378 | * @param array $vars 参数 |
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| 379 | * @return mixed |
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| 380 | */ |
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| 381 | 1 | public function invokeReflectMethod($instance, $reflect, array $vars = []) |
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| 382 | { |
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| 383 | 1 | $args = $this->bindParams($reflect, $vars); |
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| 384 | |||
| 385 | 1 | return $reflect->invokeArgs($instance, $args); |
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| 386 | } |
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| 387 | |||
| 388 | /** |
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| 389 | * 调用反射执行callable 支持参数绑定 |
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| 390 | * @access public |
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| 391 | * @param mixed $callable |
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| 392 | * @param array $vars 参数 |
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| 393 | * @return mixed |
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| 394 | */ |
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| 395 | 2 | public function invoke($callable, array $vars = []) |
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| 396 | { |
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| 397 | 2 | if ($callable instanceof Closure) { |
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| 398 | 1 | return $this->invokeFunction($callable, $vars); |
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| 399 | } |
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| 400 | |||
| 401 | 2 | return $this->invokeMethod($callable, $vars); |
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| 402 | } |
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| 403 | |||
| 404 | /** |
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| 405 | * 调用反射执行类的实例化 支持依赖注入 |
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| 406 | * @access public |
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| 407 | * @param string $class 类名 |
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| 408 | * @param array $vars 参数 |
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| 409 | * @return mixed |
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| 410 | */ |
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| 411 | 15 | public function invokeClass(string $class, array $vars = []) |
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| 412 | { |
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| 413 | try { |
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| 414 | 15 | $reflect = new ReflectionClass($class); |
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| 415 | |||
| 416 | 14 | if ($reflect->hasMethod('__make')) { |
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| 417 | 11 | $method = new ReflectionMethod($class, '__make'); |
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| 418 | |||
| 419 | 11 | if ($method->isPublic() && $method->isStatic()) { |
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| 420 | 11 | $args = $this->bindParams($method, $vars); |
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| 421 | 11 | return $method->invokeArgs(null, $args); |
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| 422 | } |
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| 423 | } |
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| 424 | |||
| 425 | 11 | $constructor = $reflect->getConstructor(); |
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| 426 | |||
| 427 | 11 | $args = $constructor ? $this->bindParams($constructor, $vars) : []; |
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| 428 | |||
| 429 | 11 | return $reflect->newInstanceArgs($args); |
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| 430 | 1 | } catch (ReflectionException $e) { |
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| 431 | 1 | throw new ClassNotFoundException('class not exists: ' . $class, $class); |
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| 432 | } |
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| 433 | } |
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| 434 | |||
| 435 | /** |
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| 436 | * 绑定参数 |
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| 437 | * @access protected |
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| 438 | * @param \ReflectionMethod|\ReflectionFunction $reflect 反射类 |
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| 439 | * @param array $vars 参数 |
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| 440 | * @return array |
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| 441 | */ |
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| 442 | 17 | protected function bindParams($reflect, array $vars = []): array |
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| 443 | { |
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| 444 | 17 | if ($reflect->getNumberOfParameters() == 0) { |
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| 445 | 6 | return []; |
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| 446 | } |
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| 447 | |||
| 448 | // 判断数组类型 数字数组时按顺序绑定参数 |
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| 449 | 11 | reset($vars); |
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| 450 | 11 | $type = key($vars) === 0 ? 1 : 0; |
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| 451 | 11 | $params = $reflect->getParameters(); |
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| 452 | 11 | $args = []; |
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| 453 | |||
| 454 | 11 | foreach ($params as $param) { |
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| 455 | 11 | $name = $param->getName(); |
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| 456 | 11 | $lowerName = App::parseName($name); |
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| 457 | 11 | $class = $param->getClass(); |
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| 458 | |||
| 459 | 11 | if ($class) { |
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| 460 | 11 | $args[] = $this->getObjectParam($class->getName(), $vars); |
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| 461 | 9 | } elseif (1 == $type && !empty($vars)) { |
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| 462 | 1 | $args[] = array_shift($vars); |
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| 463 | 9 | } elseif (0 == $type && isset($vars[$name])) { |
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| 464 | 1 | $args[] = $vars[$name]; |
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| 465 | 9 | } elseif (0 == $type && isset($vars[$lowerName])) { |
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| 466 | 1 | $args[] = $vars[$lowerName]; |
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| 467 | 9 | } elseif ($param->isDefaultValueAvailable()) { |
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| 468 | 9 | $args[] = $param->getDefaultValue(); |
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| 469 | } else { |
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| 470 | throw new InvalidArgumentException('method param miss:' . $name); |
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| 471 | } |
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| 472 | } |
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| 473 | |||
| 474 | 11 | return $args; |
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| 475 | } |
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| 476 | |||
| 477 | /** |
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| 478 | * 获取对象类型的参数值 |
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| 479 | * @access protected |
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| 480 | * @param string $className 类名 |
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| 481 | * @param array $vars 参数 |
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| 482 | * @return mixed |
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| 483 | */ |
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| 484 | 11 | protected function getObjectParam(string $className, array &$vars) |
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| 485 | { |
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| 486 | 11 | $array = $vars; |
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| 487 | 11 | $value = array_shift($array); |
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| 488 | |||
| 489 | 11 | if ($value instanceof $className) { |
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| 490 | 1 | $result = $value; |
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| 491 | 1 | array_shift($vars); |
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| 492 | } else { |
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| 493 | 11 | $result = $this->make($className); |
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| 494 | } |
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| 495 | |||
| 496 | 11 | return $result; |
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| 497 | } |
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| 498 | |||
| 499 | 1 | public function __set($name, $value) |
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| 502 | 1 | } |
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| 503 | |||
| 504 | 11 | public function __get($name) |
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| 505 | { |
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| 506 | 11 | return $this->get($name); |
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| 507 | } |
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| 508 | |||
| 509 | 1 | public function __isset($name): bool |
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| 512 | } |
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| 513 | |||
| 514 | 2 | public function __unset($name) |
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| 517 | 2 | } |
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| 518 | |||
| 519 | 1 | public function offsetExists($key) |
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| 520 | { |
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| 521 | 1 | return $this->exists($key); |
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| 522 | } |
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| 523 | |||
| 524 | 1 | public function offsetGet($key) |
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| 525 | { |
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| 526 | 1 | return $this->make($key); |
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| 527 | } |
||
| 528 | |||
| 529 | 1 | public function offsetSet($key, $value) |
|
| 530 | { |
||
| 531 | 1 | $this->bind($key, $value); |
|
| 532 | 1 | } |
|
| 533 | |||
| 534 | 1 | public function offsetUnset($key) |
|
| 535 | { |
||
| 536 | 1 | $this->delete($key); |
|
| 537 | 1 | } |
|
| 538 | |||
| 539 | //Countable |
||
| 540 | 1 | public function count() |
|
| 541 | { |
||
| 542 | 1 | return count($this->instances); |
|
| 543 | } |
||
| 544 | |||
| 545 | //IteratorAggregate |
||
| 546 | 1 | public function getIterator() |
|
| 549 | } |
||
| 550 | } |
||
| 551 |
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