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:
1 | <?php |
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21 | class Importer |
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22 | { |
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23 | /** |
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24 | * @var Extractor |
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25 | */ |
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26 | private $extractor; |
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27 | |||
28 | /** |
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29 | * @var array |
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30 | */ |
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31 | private $config; |
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32 | |||
33 | /** |
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34 | * @param Extractor $extractor |
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35 | */ |
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36 | public function __construct(Extractor $extractor) |
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40 | |||
41 | /** |
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42 | * @param Finder $finder |
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43 | * @param MessageCatalogue[] $catalogue |
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44 | * @param array $config { |
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45 | * |
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46 | * @var array $blacklist_domains Blacklist the domains we should exclude. Cannot be used with whitelist. |
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47 | * @var array $whitelist_domains Whitlelist the domains we should include. Cannot be used with blacklist. |
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48 | * @var string project_root The project root will be removed from the source location. |
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49 | * } |
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50 | * |
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51 | * @return MessageCatalogue[] |
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52 | */ |
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53 | public function extractToCatalogues(Finder $finder, array $catalogues, array $config = []) |
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80 | |||
81 | /** |
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82 | * See docs for extractToCatalogues. |
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83 | * |
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84 | * @return MessageCatalogue |
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85 | */ |
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86 | public function extractToCatalogue(Finder $finder, MessageCatalogue $catalogue, array $config = []) |
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92 | |||
93 | /** |
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94 | * @param MessageCatalogue $catalogue |
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95 | * @param SourceCollection $collection |
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96 | */ |
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97 | private function convertSourceLocationsToMessages(MessageCatalogue $catalogue, SourceCollection $collection) |
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120 | |||
121 | /** |
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122 | * @param MessageCatalogue $catalogue |
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123 | * @param $sourceLocation |
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124 | * @param $domain |
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125 | * @param $type |
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126 | * @param $value |
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127 | */ |
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128 | private function addMetadata(MessageCatalogue $catalogue, $key, $domain, $type, $value) |
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138 | |||
139 | /** |
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140 | * @param string $domain |
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141 | * |
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142 | * @return bool |
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143 | */ |
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144 | private function isValidDomain($domain) |
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155 | |||
156 | /** |
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157 | * Make sure the configuration is valid. |
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158 | * |
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159 | * @param array $config |
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160 | */ |
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161 | private function processConfig($config) |
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185 | } |
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186 |
This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function. It has, however, found a similar but not annotated parameter which might be a good fit.
Consider the following example. The parameter
$ireland
is not defined by the methodfinale(...)
.The most likely cause is that the parameter was changed, but the annotation was not.