dtapps /
php-library
| Total Complexity | 51 |
| Total Lines | 324 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like DtaContainer 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 DtaContainer, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 20 | class DtaContainer implements ContainerInterface |
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| 21 | { |
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| 22 | /** |
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| 23 | * 容器对象实例 |
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| 24 | * @var DtaContainer|Closure |
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| 25 | */ |
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| 26 | protected static $instance; |
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| 27 | |||
| 28 | /** |
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| 29 | * 容器中的对象实例 |
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| 30 | * @var array |
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| 31 | */ |
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| 32 | protected $instances = []; |
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| 33 | |||
| 34 | /** |
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| 35 | * 容器绑定标识 |
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| 36 | * @var array |
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| 37 | */ |
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| 38 | protected $bind = []; |
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| 39 | |||
| 40 | /** |
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| 41 | * 容器回调 |
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| 42 | * @var array |
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| 43 | */ |
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| 44 | protected $invokeCallback = []; |
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| 45 | |||
| 46 | /** |
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| 47 | * 获取当前容器的实例（单例） |
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| 48 | * @access public |
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| 49 | * @return static |
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| 50 | */ |
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| 51 | public static function getInstance() |
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| 52 | { |
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| 53 | if (is_null(static::$instance)) { |
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| 54 | static::$instance = new static; |
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| 55 | } |
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| 56 | |||
| 57 | if (static::$instance instanceof Closure) { |
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| 58 | return (static::$instance)(); |
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| 59 | } |
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| 60 | |||
| 61 | return static::$instance; |
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| 62 | } |
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| 63 | |||
| 64 | /** |
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| 65 | * 获取容器中的对象实例 |
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| 66 | * @access public |
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| 67 | * @param string $abstract 类名或者标识 |
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| 68 | * @return object |
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| 69 | * @throws ReflectionException |
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| 70 | * @throws Exception |
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| 71 | */ |
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| 72 | public function get($abstract) |
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| 73 | { |
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| 74 | if ($this->has($abstract)) { |
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| 75 | return $this->make($abstract); |
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| 76 | } |
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| 77 | |||
| 78 | throw new Exception('class not exists: ' . $abstract, $abstract); |
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| 79 | } |
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| 80 | |||
| 81 | /** |
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| 82 | * 根据别名获取真实类名 |
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| 83 | * @param string $abstract |
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| 84 | * @return string |
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| 85 | */ |
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| 86 | public function getAlias(string $abstract): string |
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| 97 | } |
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| 98 | |||
| 99 | /** |
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| 100 | * 判断容器中是否存在类及标识 |
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| 101 | * @access public |
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| 102 | * @param string $abstract 类名或者标识 |
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| 103 | * @return bool |
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| 104 | */ |
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| 105 | public function bound(string $abstract): bool |
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| 106 | { |
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| 107 | return isset($this->bind[$abstract]) || isset($this->instances[$abstract]); |
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| 108 | } |
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| 109 | |||
| 110 | /** |
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| 111 | * 判断容器中是否存在类及标识 |
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| 112 | * @access public |
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| 113 | * @param string $name 类名或者标识 |
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| 114 | * @return bool |
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| 115 | */ |
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| 116 | public function has($name): bool |
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| 117 | { |
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| 118 | return $this->bound($name); |
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| 119 | } |
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| 120 | |||
| 121 | /** |
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| 122 | * 创建类的实例 已经存在则直接获取 |
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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 $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 mixed |
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| 128 | * @throws ReflectionException |
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| 129 | */ |
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| 130 | public function make(string $abstract, array $vars = [], bool $newInstance = false) |
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| 149 | } |
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| 150 | |||
| 151 | /** |
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| 152 | * 执行函数或者闭包方法 支持参数调用 |
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| 153 | * @access public |
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| 154 | * @param string|Closure $function 函数或者闭包 |
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| 155 | * @param array $vars 参数 |
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| 156 | * @return mixed |
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| 157 | * @throws ReflectionException |
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| 158 | * @throws Exception |
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| 159 | */ |
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| 160 | public function invokeFunction($function, array $vars = []) |
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| 161 | { |
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| 162 | try { |
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| 163 | $reflect = new ReflectionFunction($function); |
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| 164 | } catch (ReflectionException $e) { |
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| 165 | throw new Exception("function not exists: {$function}()", $function, $e); |
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| 166 | } |
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| 167 | |||
| 168 | $args = $this->bindParams($reflect, $vars); |
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| 169 | |||
| 170 | return $function(...$args); |
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| 171 | } |
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| 172 | |||
| 173 | /** |
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| 174 | * 调用反射执行类的实例化 支持依赖注入 |
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| 175 | * @access public |
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| 176 | * @param string $class 类名 |
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| 177 | * @param array $vars 参数 |
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| 178 | * @return mixed |
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| 179 | * @throws ReflectionException |
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| 180 | * @throws Exception |
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| 181 | */ |
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| 182 | public function invokeClass(string $class, array $vars = []) |
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| 183 | { |
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| 184 | try { |
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| 185 | $reflect = new ReflectionClass($class); |
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| 186 | } catch (ReflectionException $e) { |
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| 187 | throw new Exception('class not exists: ' . $class, $class, $e); |
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| 188 | } |
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| 189 | |||
| 190 | if ($reflect->hasMethod('__make')) { |
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| 191 | $method = $reflect->getMethod('__make'); |
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| 192 | if ($method->isPublic() && $method->isStatic()) { |
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| 193 | $args = $this->bindParams($method, $vars); |
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| 194 | $object = $method->invokeArgs(null, $args); |
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| 195 | $this->invokeAfter($class, $object); |
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| 196 | return $object; |
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| 197 | } |
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| 198 | } |
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| 199 | |||
| 200 | $constructor = $reflect->getConstructor(); |
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| 201 | |||
| 202 | $args = $constructor ? $this->bindParams($constructor, $vars) : []; |
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| 203 | |||
| 204 | $object = $reflect->newInstanceArgs($args); |
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| 205 | |||
| 206 | $this->invokeAfter($class, $object); |
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| 207 | |||
| 208 | return $object; |
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| 209 | } |
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| 210 | |||
| 211 | /** |
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| 212 | * 执行invokeClass回调 |
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| 213 | * @access protected |
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| 214 | * @param string $class 对象类名 |
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| 215 | * @param object $object 容器对象实例 |
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| 216 | * @return void |
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| 217 | */ |
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| 218 | protected function invokeAfter(string $class, $object): void |
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| 219 | { |
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| 220 | if (isset($this->invokeCallback['*'])) { |
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| 221 | foreach ($this->invokeCallback['*'] as $callback) { |
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| 222 | $callback($object, $this); |
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| 223 | } |
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| 224 | } |
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| 225 | |||
| 226 | if (isset($this->invokeCallback[$class])) { |
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| 227 | foreach ($this->invokeCallback[$class] as $callback) { |
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| 228 | $callback($object, $this); |
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| 229 | } |
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| 230 | } |
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| 231 | } |
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| 232 | |||
| 233 | /** |
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| 234 | * 绑定参数 |
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| 235 | * @access protected |
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| 236 | * @param ReflectionFunctionAbstract $reflect 反射类 |
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| 237 | * @param array $vars 参数 |
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| 238 | * @return array |
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| 239 | * @throws ReflectionException |
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| 240 | */ |
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| 241 | protected function bindParams(ReflectionFunctionAbstract $reflect, array $vars = []): array |
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| 242 | { |
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| 243 | if ($reflect->getNumberOfParameters() == 0) { |
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| 244 | return []; |
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| 245 | } |
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| 246 | |||
| 247 | // 判断数组类型 数字数组时按顺序绑定参数 |
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| 248 | reset($vars); |
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| 249 | $type = key($vars) === 0 ? 1 : 0; |
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| 250 | $params = $reflect->getParameters(); |
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| 251 | $args = []; |
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| 252 | |||
| 253 | foreach ($params as $param) { |
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| 254 | $name = $param->getName(); |
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| 255 | $lowerName = self::snake($name); |
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| 256 | $reflectionType = $param->getType(); |
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| 257 | |||
| 258 | if ($reflectionType && $reflectionType->isBuiltin() === false) { |
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| 259 | $args[] = $this->getObjectParam($reflectionType->getName(), $vars); |
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| 260 | } elseif (1 == $type && !empty($vars)) { |
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| 261 | $args[] = array_shift($vars); |
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| 262 | } elseif (0 == $type && array_key_exists($name, $vars)) { |
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| 263 | $args[] = $vars[$name]; |
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| 264 | } elseif (0 == $type && array_key_exists($lowerName, $vars)) { |
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| 265 | $args[] = $vars[$lowerName]; |
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| 266 | } elseif ($param->isDefaultValueAvailable()) { |
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| 267 | $args[] = $param->getDefaultValue(); |
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| 268 | } else { |
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| 269 | throw new InvalidArgumentException('method param miss:' . $name); |
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| 270 | } |
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| 271 | } |
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| 272 | |||
| 273 | return $args; |
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| 274 | } |
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| 275 | |||
| 276 | protected static $snakeCache = []; |
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| 277 | |||
| 278 | /** |
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| 279 | * 驼峰转下划线 |
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| 280 | * |
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| 281 | * @param string $value |
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| 282 | * @param string $delimiter |
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| 283 | * @return string |
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| 284 | */ |
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| 285 | private static function snake(string $value, string $delimiter = '_'): string |
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| 286 | { |
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| 287 | $key = $value; |
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| 288 | |||
| 289 | if (isset(static::$snakeCache[$key][$delimiter])) { |
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| 290 | return static::$snakeCache[$key][$delimiter]; |
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| 291 | } |
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| 292 | |||
| 293 | if (!ctype_lower($value)) { |
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| 294 | $value = preg_replace('/\s+/u', '', $value); |
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| 295 | |||
| 296 | $value = static::lower(preg_replace('/(.)(?=[A-Z])/u', '$1' . $delimiter, $value)); |
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| 297 | } |
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| 298 | |||
| 299 | return static::$snakeCache[$key][$delimiter] = $value; |
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| 300 | } |
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| 301 | |||
| 302 | /** |
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| 303 | * 字符串转小写 |
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| 304 | * |
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| 305 | * @param string $value |
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| 306 | * @return string |
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| 307 | */ |
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| 308 | private static function lower(string $value): string |
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| 309 | { |
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| 310 | return mb_strtolower($value, 'UTF-8'); |
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| 311 | } |
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| 312 | |||
| 313 | /** |
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| 314 | * 获取对象类型的参数值 |
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| 315 | * @access protected |
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| 316 | * @param string $className 类名 |
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| 317 | * @param array $vars 参数 |
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| 318 | * @return mixed |
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| 319 | * @throws ReflectionException |
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| 320 | */ |
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| 321 | protected function getObjectParam(string $className, array &$vars) |
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| 322 | { |
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| 323 | $array = $vars; |
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| 324 | $value = array_shift($array); |
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| 325 | |||
| 326 | if ($value instanceof $className) { |
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| 327 | $result = $value; |
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| 328 | array_shift($vars); |
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| 329 | } else { |
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| 330 | $result = $this->make($className); |
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| 331 | } |
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| 332 | |||
| 333 | return $result; |
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| 334 | } |
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| 335 | |||
| 336 | public function __get($name) |
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| 339 | } |
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| 340 | |||
| 341 | public function offsetGet($key) |
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| 342 | { |
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| 343 | return $this->make($key); |
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| 344 | } |
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| 345 | } |
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| 346 |
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