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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14 | trait ArgumentsAwareConfigTrait |
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15 | { |
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16 | protected $arguments = []; |
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17 | protected $_isArgumentsBuilt; |
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18 | |||
19 | 107 | public function buildArguments() |
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20 | { |
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21 | 107 | if ($this->_isArgumentsBuilt) { |
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22 | return; |
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23 | } |
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24 | |||
25 | 107 | if (!empty($this->data['args'])) { |
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26 | 67 | $this->addArguments($this->data['args']); |
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27 | 67 | } |
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28 | 107 | $this->_isArgumentsBuilt = true; |
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29 | 107 | } |
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30 | |||
31 | 68 | public function addArguments($argsList) |
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32 | { |
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33 | 68 | foreach ($argsList as $argumentName => $argumentInfo) { |
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34 | 68 | if ($argumentInfo instanceof InputField) { |
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35 | 23 | $this->arguments[$argumentInfo->getName()] = $argumentInfo; |
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36 | 23 | continue; |
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37 | } else { |
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38 | 62 | $this->addArgument($argumentName, $this->buildConfig($argumentName, $argumentInfo)); |
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39 | } |
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40 | 68 | } |
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41 | |||
42 | 68 | return $this; |
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43 | } |
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44 | |||
45 | 78 | public function addArgument($argument, $argumentInfo = null) |
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46 | { |
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47 | 78 | if (!($argument instanceof InputField)) { |
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48 | 66 | $argument = new InputField($this->buildConfig($argument, $argumentInfo)); |
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49 | 66 | } |
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50 | 78 | $this->arguments[$argument->getName()] = $argument; |
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51 | |||
52 | 78 | return $this; |
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53 | } |
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54 | |||
55 | 66 | View Code Duplication | protected function buildConfig($name, $info = null) |
56 | { |
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57 | 66 | if (!is_array($info)) { |
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58 | return [ |
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59 | 51 | 'type' => $info, |
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60 | 'name' => $name |
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61 | 51 | ]; |
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62 | } |
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63 | 66 | if (empty($info['name'])) { |
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64 | 28 | $info['name'] = $name; |
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65 | 28 | } |
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66 | |||
67 | 66 | return $info; |
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68 | } |
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69 | |||
70 | /** |
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71 | * @param $name |
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72 | * |
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73 | * @return InputField |
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74 | */ |
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75 | 38 | public function getArgument($name) |
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79 | |||
80 | /** |
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81 | * @param $name |
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82 | * |
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83 | * @return bool |
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84 | */ |
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85 | 40 | public function hasArgument($name) |
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89 | |||
90 | 8 | public function hasArguments() |
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94 | |||
95 | /** |
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96 | * @return InputField[] |
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97 | */ |
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98 | 69 | public function getArguments() |
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102 | |||
103 | 2 | public function removeArgument($name) |
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104 | { |
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105 | 2 | if ($this->hasArgument($name)) { |
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106 | 2 | unset($this->arguments[$name]); |
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111 | |||
112 | } |
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113 |
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: