Complex classes like AttributeDecorator 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 AttributeDecorator, and based on these observations, apply Extract Interface, too.
1 | <?php |
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21 | class AttributeDecorator |
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22 | { |
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23 | /** |
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24 | * Server. |
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25 | * |
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26 | * @var Server |
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27 | */ |
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28 | protected $server; |
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29 | |||
30 | /** |
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31 | * Filesystem. |
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32 | * |
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33 | * @var Filesystem |
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34 | */ |
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35 | protected $fs; |
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36 | |||
37 | /** |
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38 | * Acl. |
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39 | * |
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40 | * @var Acl |
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41 | */ |
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42 | protected $acl; |
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43 | |||
44 | /** |
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45 | * Custom attributes. |
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46 | * |
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47 | * @var array |
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48 | */ |
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49 | protected $custom = []; |
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50 | |||
51 | /** |
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52 | * Init. |
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53 | * |
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54 | * @param Server $server |
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55 | * @param Acl $acl |
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56 | */ |
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57 | public function __construct(Server $server, Acl $acl) |
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63 | |||
64 | /** |
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65 | * Decorate attributes. |
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66 | * |
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67 | * @param NodeInterface $node |
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68 | * @param array $attributes |
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69 | * |
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70 | * @return array |
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71 | */ |
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72 | public function decorate(NodeInterface $node, ?array $attributes): array |
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94 | |||
95 | /** |
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96 | * Add decorator. |
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97 | * |
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98 | * @param string $attribute |
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99 | * @param Closure $decorator |
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100 | * |
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101 | * @return AttributeDecorator |
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102 | */ |
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103 | public function addDecorator(string $attribute, Closure $decorator): self |
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109 | |||
110 | /** |
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111 | * Prepare requested attributes. |
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112 | * |
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113 | * @param NodeInterface $node |
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114 | * @param array $attributes |
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115 | * |
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116 | * @return array |
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117 | */ |
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118 | protected function prepare(NodeInterface $node, ?array $attributes): array |
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158 | |||
159 | /** |
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160 | * Get Attributes. |
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161 | * |
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162 | * @param NodeInterface |
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163 | * @param array $attributes |
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164 | * |
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165 | * @return array |
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166 | */ |
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167 | protected function getAttributes(NodeInterface $node, array $attributes): array |
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212 | |||
213 | /** |
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214 | * Get Attributes. |
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215 | * |
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216 | * @param NodeInterface |
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217 | * @param array $attributes |
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218 | * |
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219 | * @return array |
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220 | */ |
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221 | protected function getTimeAttributes(NodeInterface $node, array $attributes): array |
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246 | |||
247 | /** |
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248 | * Get Attributes. |
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249 | * |
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250 | * @param NodeInterface |
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251 | * @param array $attributes |
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252 | * |
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253 | * @return array |
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254 | */ |
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255 | protected function getTypeAttributes(NodeInterface $node, array $attributes): array |
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302 | |||
303 | /** |
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304 | * Execute closures. |
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305 | * |
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306 | * @param NodeInterface |
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307 | * @param array $attributes |
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308 | * @param array $requested |
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309 | * |
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310 | * @return array |
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311 | */ |
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312 | protected function translateAttributes(NodeInterface $node, array $attributes, array $requested): array |
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328 | } |
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329 |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.