Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like Module 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. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
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 Module, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 13 | abstract class Module |
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| 14 | { |
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| 15 | use Macroable; |
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| 16 | |||
| 17 | /** |
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| 18 | * The laravel|lumen application instance. |
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| 19 | * |
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| 20 | * @var \Illuminate\Contracts\Foundation\Application|\Laravel\Lumen\Application |
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| 21 | */ |
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| 22 | protected $app; |
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| 23 | |||
| 24 | /** |
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| 25 | * The module name. |
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| 26 | * |
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| 27 | * @var |
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| 28 | */ |
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| 29 | protected $name; |
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| 30 | |||
| 31 | /** |
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| 32 | * The module path. |
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| 33 | * |
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| 34 | * @var string |
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| 35 | */ |
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| 36 | protected $path; |
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| 37 | |||
| 38 | /** |
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| 39 | * @var array of cached Json objects, keyed by filename |
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| 40 | */ |
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| 41 | protected $moduleJson = []; |
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| 42 | /** |
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| 43 | * @var CacheManager |
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| 44 | */ |
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| 45 | private $cache; |
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| 46 | /** |
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| 47 | * @var Filesystem |
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| 48 | */ |
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| 49 | private $files; |
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| 50 | /** |
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| 51 | * @var Translator |
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| 52 | */ |
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| 53 | private $translator; |
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| 54 | |||
| 55 | /** |
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| 56 | * The constructor. |
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| 57 | * @param Container $app |
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| 58 | * @param $name |
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| 59 | * @param $path |
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| 60 | */ |
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| 61 | 153 | View Code Duplication | public function __construct(Container $app, string $name, $path) |
| 70 | |||
| 71 | /** |
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| 72 | * Get name. |
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| 73 | * |
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| 74 | * @return string |
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| 75 | */ |
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| 76 | 2 | public function getName() |
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| 80 | |||
| 81 | /** |
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| 82 | * Get name in lower case. |
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| 83 | * |
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| 84 | * @return string |
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| 85 | */ |
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| 86 | 115 | public function getLowerName() |
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| 90 | |||
| 91 | /** |
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| 92 | * Get name in studly case. |
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| 93 | * |
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| 94 | * @return string |
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| 95 | */ |
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| 96 | 101 | public function getStudlyName() |
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| 100 | |||
| 101 | /** |
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| 102 | * Get name in snake case. |
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| 103 | * |
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| 104 | * @return string |
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| 105 | */ |
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| 106 | 6 | public function getSnakeName() |
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| 110 | |||
| 111 | /** |
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| 112 | * Get description. |
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| 113 | * |
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| 114 | * @return string |
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| 115 | */ |
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| 116 | 2 | public function getDescription() |
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| 120 | |||
| 121 | /** |
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| 122 | * Get alias. |
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| 123 | * |
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| 124 | * @return string |
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| 125 | */ |
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| 126 | 4 | public function getAlias() |
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| 130 | |||
| 131 | /** |
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| 132 | * Get priority. |
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| 133 | * |
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| 134 | * @return string |
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| 135 | */ |
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| 136 | public function getPriority() |
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| 140 | |||
| 141 | /** |
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| 142 | * Get module requirements. |
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| 143 | * |
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| 144 | * @return array |
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| 145 | */ |
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| 146 | 3 | public function getRequires() |
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| 150 | |||
| 151 | /** |
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| 152 | * Get path. |
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| 153 | * |
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| 154 | * @return string |
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| 155 | */ |
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| 156 | 136 | public function getPath() |
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| 160 | |||
| 161 | /** |
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| 162 | * Set path. |
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| 163 | * |
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| 164 | * @param string $path |
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| 165 | * |
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| 166 | * @return $this |
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| 167 | */ |
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| 168 | public function setPath($path) |
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| 174 | |||
| 175 | /** |
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| 176 | * Bootstrap the application events. |
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| 177 | */ |
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| 178 | 2 | public function boot() |
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| 190 | |||
| 191 | /** |
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| 192 | * Register module's translation. |
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| 193 | * |
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| 194 | * @return void |
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| 195 | */ |
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| 196 | 2 | protected function registerTranslation() |
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| 206 | |||
| 207 | /** |
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| 208 | * Get json contents from the cache, setting as needed. |
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| 209 | * |
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| 210 | * @param string $file |
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| 211 | * |
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| 212 | * @return Json |
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| 213 | */ |
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| 214 | 35 | public function json($file = null) : Json |
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| 224 | |||
| 225 | /** |
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| 226 | * Get a specific data from json file by given the key. |
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| 227 | * |
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| 228 | * @param string $key |
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| 229 | * @param null $default |
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| 230 | * |
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| 231 | * @return mixed |
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| 232 | */ |
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| 233 | 24 | public function get(string $key, $default = null) |
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| 237 | |||
| 238 | /** |
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| 239 | * Get a specific data from composer.json file by given the key. |
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| 240 | * |
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| 241 | * @param $key |
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| 242 | * @param null $default |
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| 243 | * |
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| 244 | * @return mixed |
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| 245 | */ |
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| 246 | 2 | public function getComposerAttr($key, $default = null) |
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| 250 | |||
| 251 | /** |
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| 252 | * Register the module. |
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| 253 | */ |
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| 254 | public function register() |
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| 266 | |||
| 267 | /** |
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| 268 | * Register the module event. |
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| 269 | * |
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| 270 | * @param string $event |
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| 271 | */ |
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| 272 | 8 | protected function fireEvent($event) |
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| 276 | /** |
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| 277 | * Register the aliases from this module. |
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| 278 | */ |
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| 279 | abstract public function registerAliases(); |
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| 280 | |||
| 281 | /** |
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| 282 | * Register the service providers from this module. |
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| 283 | */ |
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| 284 | abstract public function registerProviders(); |
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| 285 | |||
| 286 | /** |
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| 287 | * Get the path to the cached *_module.php file. |
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| 288 | * |
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| 289 | * @return string |
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| 290 | */ |
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| 291 | abstract public function getCachedServicesPath(); |
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| 292 | |||
| 293 | /** |
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| 294 | * Register the files from this module. |
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| 295 | */ |
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| 296 | protected function registerFiles() |
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| 302 | |||
| 303 | /** |
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| 304 | * Handle call __toString. |
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| 305 | * |
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| 306 | * @return string |
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| 307 | */ |
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| 308 | 3 | public function __toString() |
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| 312 | |||
| 313 | /** |
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| 314 | * Determine whether the given status same with the current module status. |
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| 315 | * |
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| 316 | * @param $status |
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| 317 | * |
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| 318 | * @return bool |
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| 319 | */ |
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| 320 | 11 | public function isStatus($status) : bool |
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| 324 | |||
| 325 | /** |
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| 326 | * Determine whether the current module activated. |
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| 327 | * |
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| 328 | * @return bool |
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| 329 | */ |
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| 330 | 6 | public function enabled() : bool |
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| 334 | |||
| 335 | /** |
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| 336 | * Determine whether the current module not disabled. |
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| 337 | * |
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| 338 | * @return bool |
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| 339 | */ |
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| 340 | 2 | public function disabled() : bool |
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| 344 | |||
| 345 | /** |
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| 346 | * Set active state for current module. |
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| 347 | * |
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| 348 | * @param $active |
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| 349 | * |
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| 350 | * @return bool |
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| 351 | */ |
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| 352 | 6 | public function setActive($active) |
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| 356 | |||
| 357 | /** |
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| 358 | * Disable the current module. |
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| 359 | */ |
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| 360 | 3 | public function disable() |
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| 369 | |||
| 370 | /** |
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| 371 | * Enable the current module. |
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| 372 | */ |
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| 373 | 3 | public function enable() |
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| 382 | |||
| 383 | /** |
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| 384 | * Delete the current module. |
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| 385 | * |
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| 386 | * @return bool |
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| 387 | */ |
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| 388 | 2 | public function delete() |
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| 392 | |||
| 393 | /** |
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| 394 | * Get extra path. |
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| 395 | * |
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| 396 | * @param string $path |
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| 397 | * |
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| 398 | * @return string |
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| 399 | */ |
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| 400 | 3 | public function getExtraPath(string $path) : string |
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| 404 | |||
| 405 | /** |
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| 406 | * Handle call to __get method. |
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| 407 | * |
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| 408 | * @param $key |
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| 409 | * |
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| 410 | * @return mixed |
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| 411 | */ |
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| 412 | public function __get($key) |
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| 416 | |||
| 417 | /** |
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| 418 | * Check if can load files of module on boot method. |
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| 419 | * |
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| 420 | * @return bool |
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| 421 | */ |
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| 422 | 2 | protected function isLoadFilesOnBoot() |
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| 428 | |||
| 429 | 6 | private function flushCache(): void |
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| 435 | |||
| 436 | /** |
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| 437 | * Register a translation file namespace. |
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| 438 | * |
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| 439 | * @param string $path |
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| 440 | * @param string $namespace |
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| 441 | * @return void |
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| 442 | */ |
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| 443 | 2 | private function loadTranslationsFrom(string $path, string $namespace): void |
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| 447 | } |
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| 448 |
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..