Complex classes like Extra 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 Extra, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 9 | class Extra extends Assert |
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| 10 | { |
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| 11 | /** |
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| 12 | * @psalm-assert null|string $value |
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| 13 | * @param mixed $value |
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| 14 | * @param string $message |
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| 15 | */ |
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| 16 | public static function nullOrString($value, $message = '') |
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| 20 | |||
| 21 | /** |
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| 22 | * @psalm-assert array<array-key,string> $value |
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| 23 | * @param mixed $value |
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| 24 | * @param string $message |
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| 25 | */ |
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| 26 | public static function allString($value, $message = '') |
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| 30 | |||
| 31 | /** |
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| 32 | * @psalm-assert null|string $value |
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| 33 | * @param mixed $value |
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| 34 | * @param string $message |
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| 35 | */ |
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| 36 | public static function nullOrStringNotEmpty($value, $message = '') |
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| 40 | |||
| 41 | /** |
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| 42 | * @psalm-assert array<array-key,string> $value |
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| 43 | * @param mixed $value |
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| 44 | * @param string $message |
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| 45 | */ |
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| 46 | public static function allStringNotEmpty($value, $message = '') |
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| 50 | |||
| 51 | /** |
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| 52 | * @psalm-assert null|int $value |
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| 53 | * @param mixed $value |
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| 54 | * @param string $message |
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| 55 | */ |
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| 56 | public static function nullOrInteger($value, $message = '') |
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| 60 | |||
| 61 | /** |
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| 62 | * @psalm-assert array<array-key,int> $value |
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| 63 | * @param mixed $value |
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| 64 | * @param string $message |
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| 65 | */ |
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| 66 | public static function allInteger($value, $message = '') |
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| 70 | |||
| 71 | /** |
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| 72 | * @psalm-assert null|numeric $value |
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| 73 | * @param mixed $value |
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| 74 | * @param string $message |
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| 75 | */ |
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| 76 | public static function nullOrIntegerish($value, $message = '') |
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| 80 | |||
| 81 | /** |
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| 82 | * @psalm-assert array<array-key,numeric> $value |
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| 83 | * @param mixed $value |
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| 84 | * @param string $message |
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| 85 | */ |
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| 86 | public static function allIntegerish($value, $message = '') |
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| 90 | |||
| 91 | /** |
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| 92 | * @psalm-assert null|float $value |
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| 93 | * @param mixed $value |
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| 94 | * @param string $message |
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| 95 | */ |
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| 96 | public static function nullOrFloat($value, $message = '') |
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| 100 | |||
| 101 | /** |
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| 102 | * @psalm-assert array<array-key,float> $value |
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| 103 | * @param mixed $value |
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| 104 | * @param string $message |
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| 105 | */ |
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| 106 | public static function allFloat($value, $message = '') |
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| 110 | |||
| 111 | /** |
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| 112 | * @psalm-assert null|numeric $value |
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| 113 | * @param mixed $value |
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| 114 | * @param string $message |
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| 115 | */ |
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| 116 | public static function nullOrNumeric($value, $message = '') |
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| 120 | |||
| 121 | /** |
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| 122 | * @psalm-assert array<array-key,numeric> $value |
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| 123 | * @param mixed $value |
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| 124 | * @param string $message |
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| 125 | */ |
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| 126 | public static function allNumeric($value, $message = '') |
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| 130 | |||
| 131 | /** |
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| 132 | * @psalm-assert null|int $value |
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| 133 | * @param mixed $value |
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| 134 | * @param string $message |
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| 135 | */ |
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| 136 | public static function nullOrNatural($value, $message = '') |
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| 140 | |||
| 141 | /** |
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| 142 | * @psalm-assert array<array-key,int> $value |
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| 143 | * @param mixed $value |
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| 144 | * @param string $message |
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| 145 | */ |
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| 146 | public static function allNatural($value, $message = '') |
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| 150 | |||
| 151 | /** |
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| 152 | * @psalm-assert null|bool $value |
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| 153 | * @param mixed $value |
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| 154 | * @param string $message |
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| 155 | */ |
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| 156 | public static function nullOrBoolean($value, $message = '') |
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| 160 | |||
| 161 | /** |
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| 162 | * @psalm-assert array<array-key,bool> $value |
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| 163 | * @param mixed $value |
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| 164 | * @param string $message |
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| 165 | */ |
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| 166 | public static function allBoolean($value, $message = '') |
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| 170 | |||
| 171 | /** |
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| 172 | * @psalm-assert null|scalar $value |
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| 173 | * @param mixed $value |
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| 174 | * @param string $message |
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| 175 | */ |
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| 176 | public static function nullOrScalar($value, $message = '') |
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| 180 | |||
| 181 | /** |
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| 182 | * @psalm-assert array<array-key,scalar> $value |
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| 183 | * @param mixed $value |
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| 184 | * @param string $message |
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| 185 | */ |
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| 186 | public static function allScalar($value, $message = '') |
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| 190 | |||
| 191 | /** |
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| 192 | * @psalm-assert null|object $value |
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| 193 | * @param mixed $value |
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| 194 | * @param string $message |
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| 195 | */ |
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| 196 | public static function nullOrObject($value, $message = '') |
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| 200 | |||
| 201 | /** |
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| 202 | * @psalm-assert array<array-key,object> $value |
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| 203 | * @param mixed $value |
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| 204 | * @param string $message |
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| 205 | */ |
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| 206 | public static function allObject($value, $message = '') |
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| 210 | |||
| 211 | /** |
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| 212 | * @psalm-assert null|resource $value |
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| 213 | * @param mixed $value |
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| 214 | * @param string|null $type type of resource this should be. @see https://www.php.net/manual/en/function.get-resource-type.php |
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| 215 | * @param string $message |
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| 216 | */ |
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| 217 | public static function nullOrResource($value, $type = null, $message = '') |
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| 221 | |||
| 222 | /** |
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| 223 | * @psalm-assert array<array-key,resource> $value |
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| 224 | * @param mixed $value |
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| 225 | * @param string|null $type type of resource this should be. @see https://www.php.net/manual/en/function.get-resource-type.php |
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| 226 | * @param string $message |
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| 227 | */ |
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| 228 | public static function allResource($value, $type = null, $message = '') |
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| 232 | |||
| 233 | /** |
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| 234 | * @psalm-assert null|callable $value |
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| 235 | * @param mixed $value |
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| 236 | * @param string $message |
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| 237 | */ |
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| 238 | public static function nullOrIsCallable($value, $message = '') |
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| 242 | |||
| 243 | /** |
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| 244 | * @psalm-assert array<array-key,callable> $value |
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| 245 | * @param mixed $value |
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| 246 | * @param string $message |
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| 247 | */ |
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| 248 | public static function allIsCallable($value, $message = '') |
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| 252 | |||
| 253 | /** |
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| 254 | * @psalm-assert null|array $value |
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| 255 | * @param mixed $value |
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| 256 | * @param string $message |
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| 257 | */ |
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| 258 | public static function nullOrIsArray($value, $message = '') |
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| 262 | |||
| 263 | /** |
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| 264 | * @psalm-assert array<array-key,array> $value |
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| 265 | * @param mixed $value |
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| 266 | * @param string $message |
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| 267 | */ |
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| 268 | public static function allIsArray($value, $message = '') |
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| 272 | |||
| 273 | /** |
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| 274 | * @psalm-assert null|iterable $value |
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| 275 | * @deprecated use "isIterable" or "isInstanceOf" instead |
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| 276 | * @param mixed $value |
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| 277 | * @param string $message |
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| 278 | */ |
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| 279 | public static function nullOrIsTraversable($value, $message = '') |
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| 283 | |||
| 284 | /** |
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| 285 | * @psalm-assert array<array-key,iterable> $value |
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| 286 | * @deprecated use "isIterable" or "isInstanceOf" instead |
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| 287 | * @param mixed $value |
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| 288 | * @param string $message |
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| 289 | */ |
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| 290 | public static function allIsTraversable($value, $message = '') |
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| 294 | |||
| 295 | /** |
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| 296 | * @psalm-assert null|countable $value |
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| 297 | * @param mixed $value |
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| 298 | * @param string $message |
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| 299 | */ |
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| 300 | public static function nullOrIsCountable($value, $message = '') |
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| 304 | |||
| 305 | /** |
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| 306 | * @psalm-assert array<array-key,countable> $value |
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| 307 | * @param mixed $value |
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| 308 | * @param string $message |
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| 309 | */ |
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| 310 | public static function allIsCountable($value, $message = '') |
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| 314 | |||
| 315 | /** |
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| 316 | * @psalm-assert null|iterable $value |
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| 317 | * @param mixed $value |
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| 318 | * @param string $message |
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| 319 | */ |
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| 320 | public static function nullOrIsIterable($value, $message = '') |
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| 324 | |||
| 325 | /** |
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| 326 | * @psalm-assert array<array-key,iterable> $value |
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| 327 | * @param mixed $value |
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| 328 | * @param string $message |
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| 329 | */ |
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| 330 | public static function allIsIterable($value, $message = '') |
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| 334 | |||
| 335 | /** |
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| 336 | * @psalm-template ExpectedType of object |
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| 337 | * @psalm-param class-string<ExpectedType> $class |
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| 338 | * @psalm-assert null|ExpectedType $value |
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| 339 | * @param mixed $value |
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| 340 | * @param string|object $class |
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| 341 | * @param string $message |
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| 342 | */ |
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| 343 | public static function nullOrIsInstanceOf($value, $class, $message = '') |
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| 347 | |||
| 348 | /** |
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| 349 | * @psalm-template ExpectedType of object |
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| 350 | * @psalm-param class-string<ExpectedType> $class |
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| 351 | * @psalm-assert array<array-key,ExpectedType> $value |
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| 352 | * @param mixed $value |
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| 353 | * @param string|object $class |
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| 354 | * @param string $message |
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| 355 | */ |
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| 356 | public static function allIsInstanceOf($value, $class, $message = '') |
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| 360 | |||
| 361 | /** |
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| 362 | * @psalm-assert null|empty $value |
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| 363 | * @param mixed $value |
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| 364 | * @param string $message |
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| 365 | */ |
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| 366 | public static function nullOrIsEmpty($value, $message = '') |
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| 370 | |||
| 371 | /** |
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| 372 | * @psalm-assert array<array-key,empty> $value |
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| 373 | * @param mixed $value |
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| 374 | * @param string $message |
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| 375 | */ |
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| 376 | public static function allIsEmpty($value, $message = '') |
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| 380 | |||
| 381 | /** |
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| 382 | * @psalm-assert array<array-key,null> $value |
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| 383 | * @param mixed $value |
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| 384 | * @param string $message |
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| 385 | */ |
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| 386 | public static function allNull($value, $message = '') |
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| 390 | |||
| 391 | /** |
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| 392 | * @psalm-assert null|true $value |
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| 393 | * @param mixed $value |
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| 394 | * @param string $message |
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| 395 | */ |
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| 396 | public static function nullOrTrue($value, $message = '') |
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| 400 | |||
| 401 | /** |
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| 402 | * @psalm-assert array<array-key,true> $value |
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| 403 | * @param mixed $value |
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| 404 | * @param string $message |
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| 405 | */ |
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| 406 | public static function allTrue($value, $message = '') |
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| 410 | |||
| 411 | /** |
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| 412 | * @psalm-assert null|false $value |
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| 413 | * @param mixed $value |
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| 414 | * @param string $message |
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| 415 | */ |
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| 416 | public static function nullOrFalse($value, $message = '') |
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| 420 | |||
| 421 | /** |
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| 422 | * @psalm-assert array<array-key,false> $value |
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| 423 | * @param mixed $value |
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| 424 | * @param string $message |
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| 425 | */ |
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| 426 | public static function allFalse($value, $message = '') |
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| 430 | |||
| 431 | /** |
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| 432 | * @psalm-template ExpectedType |
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| 433 | * @psalm-param array<ExpectedType> $values |
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| 434 | * @psalm-assert null|ExpectedType $value |
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| 435 | * @param mixed $value |
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| 436 | * @param array $values |
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| 437 | * @param string $message |
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| 438 | */ |
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| 439 | public static function nullOrOneOf($value, $values, $message = '') |
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| 443 | |||
| 444 | /** |
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| 445 | * @psalm-template ExpectedType |
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| 446 | * @psalm-param array<ExpectedType> $values |
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| 447 | * @psalm-assert array<array-key,ExpectedType> $value |
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| 448 | * @param mixed $value |
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| 449 | * @param array $values |
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| 450 | * @param string $message |
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| 451 | */ |
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| 452 | public static function allOneOf($value, $values, $message = '') |
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| 456 | |||
| 457 | /** |
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| 458 | * @psalm-assert null|class-string $value |
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| 459 | * @param mixed $value |
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| 460 | * @param string $message |
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| 461 | */ |
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| 462 | public static function nullOrClassExists($value, $message = '') |
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| 466 | |||
| 467 | /** |
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| 468 | * @psalm-assert array<array-key,class-string> $value |
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| 469 | * @param mixed $value |
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| 470 | * @param string $message |
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| 471 | */ |
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| 472 | public static function allClassExists($value, $message = '') |
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| 476 | |||
| 477 | /** |
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| 478 | * @psalm-assert null|class-string $value |
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| 479 | * @param mixed $value |
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| 480 | * @param string $message |
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| 481 | */ |
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| 482 | public static function nullOrInterfaceExists($value, $message = '') |
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| 486 | |||
| 487 | /** |
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| 488 | * @psalm-assert array<array-key,class-string> $value |
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| 489 | * @param mixed $value |
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| 490 | * @param string $message |
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| 491 | */ |
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| 492 | public static function allInterfaceExists($value, $message = '') |
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| 496 | } |
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| 497 |