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1 | <?php |
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2 | /** |
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3 | * PHP Units of Measure Library |
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4 | * |
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5 | * @link https://github.com/hiqdev/php-units |
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6 | * @package php-units |
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7 | * @license BSD-3-Clause |
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8 | * @copyright Copyright (c) 2017-2018, HiQDev (http://hiqdev.com/) |
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9 | */ |
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10 | |||
11 | namespace hiqdev\php\units; |
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12 | |||
13 | use yii\base\InvalidConfigException; |
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14 | |||
15 | /** |
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16 | * Quantity with Unit. |
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17 | * |
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18 | * @author Andrii Vasyliev <[email protected]> |
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19 | */ |
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20 | abstract class AbstractQuantity implements QuantityInterface, \JsonSerializable |
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21 | { |
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22 | /** |
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23 | * @var UnitInterface |
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24 | */ |
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25 | private $unit; |
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26 | |||
27 | /** |
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28 | * @var float|int|string |
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29 | */ |
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30 | private $quantity; |
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31 | |||
32 | /** |
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33 | * @var UnitInterface |
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34 | * @var float|int|string $quantity |
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35 | */ |
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36 | 11 | private function __construct(UnitInterface $unit, $quantity) |
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37 | { |
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38 | 11 | $this->unit = $unit; |
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39 | 11 | $this->quantity = $quantity; |
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40 | 11 | } |
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41 | |||
42 | /** |
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43 | * Creates quantity with same unit. |
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44 | * Optimized to return this if same quantity. |
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45 | * @var float|int|string |
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46 | */ |
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47 | 3 | final protected function repeat($quantity) |
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48 | { |
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49 | 3 | return $this->quantity === $quantity ? $this : static::create($this->unit, $quantity); |
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0 ignored issues
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50 | } |
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51 | |||
52 | /** |
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53 | * {@inheritdoc} |
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54 | */ |
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55 | 5 | private function getCalculator() |
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56 | { |
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57 | 5 | return $this->unit->getCalculator(); |
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58 | } |
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59 | |||
60 | /** |
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61 | * {@inheritdoc} |
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62 | */ |
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63 | 12 | final public function getQuantity() |
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64 | { |
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65 | 12 | return $this->quantity; |
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66 | } |
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67 | |||
68 | /** |
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69 | * {@inheritdoc} |
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70 | */ |
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71 | 7 | final public function getUnit() |
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72 | { |
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73 | 7 | return $this->unit; |
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74 | } |
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75 | |||
76 | /** |
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77 | * {@inheritdoc} |
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78 | */ |
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79 | 2 | final public function compare(QuantityInterface $other) |
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80 | { |
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81 | 2 | $arg = $other->convert($this->unit)->getQuantity(); |
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82 | |||
83 | 2 | return $this->getCalculator()->compare($this->quantity, $arg); |
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84 | } |
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85 | |||
86 | /** |
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87 | * {@inheritdoc} |
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88 | */ |
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89 | 1 | final public function equals(QuantityInterface $other) |
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90 | { |
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91 | 1 | return $this->compare($other) === 0; |
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92 | } |
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93 | |||
94 | /** |
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95 | * {@inheritdoc} |
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96 | */ |
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97 | 1 | final public function isPositive() |
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98 | { |
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99 | 1 | return $this->quantity > 0; |
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100 | } |
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101 | |||
102 | /** |
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103 | * {@inheritdoc} |
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104 | */ |
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105 | 1 | final public function isNegative() |
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106 | { |
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107 | 1 | return $this->quantity < 0; |
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108 | } |
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109 | |||
110 | /** |
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111 | * {@inheritdoc} |
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112 | */ |
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113 | 1 | final public function isConvertible(UnitInterface $unit) |
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114 | { |
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115 | 1 | return $this->unit->isConvertible($unit); |
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0 ignored issues
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show
$unit is of type object<hiqdev\php\units\UnitInterface> , but the function expects a object<self> .
It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { }
$x = '123'; // string "123"
// Instead of
acceptsInteger($x);
// we recommend to use
acceptsInteger((integer) $x);
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The return type of
return $this->unit->isConvertible($unit); (boolean ) is incompatible with the return type declared by the interface hiqdev\php\units\QuantityInterface::isConvertible of type hiqdev\php\units\QuantityInterface .
If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author {
private $name;
public function __construct($name) {
$this->name = $name;
}
public function getName() {
return $this->name;
}
}
abstract class Post {
public function getAuthor() {
return 'Johannes';
}
}
class BlogPost extends Post {
public function getAuthor() {
return new Author('Johannes');
}
}
class ForumPost extends Post { /* ... */ }
function my_function(Post $post) {
echo strtoupper($post->getAuthor());
}
Our function
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116 | } |
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117 | |||
118 | /** |
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119 | * {@inheritdoc} |
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120 | */ |
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121 | 5 | final public function convert(UnitInterface $unit) |
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122 | { |
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123 | 5 | $res = $this->unit->convert($unit, $this->quantity); |
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0 ignored issues
–
show
$unit is of type object<hiqdev\php\units\UnitInterface> , but the function expects a object<self> .
It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { }
$x = '123'; // string "123"
// Instead of
acceptsInteger($x);
// we recommend to use
acceptsInteger((integer) $x);
Loading history...
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124 | |||
125 | 5 | return static::create($unit, $res); |
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0 ignored issues
–
show
$unit is of type object<hiqdev\php\units\UnitInterface> , but the function expects a string .
It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { }
$x = '123'; // string "123"
// Instead of
acceptsInteger($x);
// we recommend to use
acceptsInteger((integer) $x);
Loading history...
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126 | } |
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127 | |||
128 | /** |
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129 | * {@inheritdoc} |
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130 | */ |
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131 | 1 | View Code Duplication | final public function add(QuantityInterface $addend) |
0 ignored issues
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show
This method seems to be duplicated in your project.
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository.
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132 | { |
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133 | 1 | $arg = $addend->convert($this->unit)->getQuantity(); |
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134 | 1 | $res = $this->getCalculator()->add($this->quantity, $arg); |
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135 | |||
136 | 1 | return $this->repeat($res); |
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137 | } |
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138 | |||
139 | /** |
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140 | * {@inheritdoc} |
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141 | */ |
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142 | 1 | View Code Duplication | final public function subtract(QuantityInterface $subtrahend) |
0 ignored issues
–
show
This method seems to be duplicated in your project.
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository.
Loading history...
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143 | { |
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144 | 1 | $arg = $subtrahend->convert($this->unit)->getQuantity(); |
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145 | 1 | $res = $this->getCalculator()->subtract($this->quantity, $arg); |
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146 | |||
147 | 1 | return $this->repeat($res); |
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148 | } |
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149 | |||
150 | /** |
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151 | * {@inheritdoc} |
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152 | */ |
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153 | 1 | final public function multiply($multiplier) |
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154 | { |
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155 | 1 | $res = $this->getCalculator()->multiply($this->quantity, $multiplier); |
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156 | |||
157 | 1 | return $this->repeat($res); |
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158 | } |
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159 | |||
160 | /** |
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161 | * {@inheritdoc} |
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162 | */ |
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163 | final public function divide($divisor) |
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164 | { |
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165 | $res = $this->getCalculator()->divide($this->quantity, $divisor); |
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166 | |||
167 | return $this->repeat($res); |
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168 | } |
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169 | |||
170 | /** |
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171 | * {@inheritdoc} |
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172 | */ |
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173 | final public function ceil() |
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174 | { |
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175 | $res = $this->getCalculator()->ceil($this->quantity); |
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176 | |||
177 | return $this->repeat($res); |
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178 | } |
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179 | |||
180 | /** |
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181 | * {@inheritdoc} |
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182 | */ |
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183 | final public function floor() |
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184 | { |
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185 | $res = $this->getCalculator()->floor($this->quantity); |
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186 | |||
187 | return $this->repeat($res); |
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188 | } |
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189 | |||
190 | /** |
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191 | * {@inheritdoc} |
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192 | */ |
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193 | final public function round($roundingMode) |
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194 | { |
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195 | $res = $this->getCalculator()->round($this->quantity, $roundingMode); |
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196 | |||
197 | return $this->repeat($res); |
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198 | } |
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199 | |||
200 | /** |
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201 | * {@inheritdoc} |
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202 | */ |
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203 | final public function absolute() |
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204 | { |
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205 | $res = $this->getCalculator()->absolute($this->quantity); |
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206 | |||
207 | return $this->repeat($res); |
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208 | } |
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209 | |||
210 | 11 | final public static function __callStatic($unit, $args) |
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211 | { |
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212 | 11 | return static::create($unit, $args[0]); |
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213 | } |
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214 | |||
215 | /** |
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216 | * @param string $unit |
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217 | * @var float|int|string $quantity |
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218 | * @return static |
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219 | */ |
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220 | 11 | public static function create($unit, $quantity) |
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221 | { |
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222 | 11 | return new static(static::findUnit($unit), $quantity); |
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223 | } |
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224 | |||
225 | /** |
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226 | * Returns unit for given unit name. |
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227 | * The only function to change in child classes. |
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228 | * XXX Should be defined as abstract but `abstract static` is not supported in PHP5. |
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229 | * @param string $name |
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0 ignored issues
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show
There is no parameter named
$name . Was it maybe removed?
This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function. Consider the following example. The parameter /**
* @param array $germany
* @param array $island
* @param array $italy
*/
function finale($germany, $island) {
return "2:1";
}
The most likely cause is that the parameter was removed, but the annotation was not.
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230 | * @return UnitInterface |
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231 | */ |
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232 | protected static function findUnit($unit) |
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233 | { |
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234 | throw new InvalidConfigException('getUnit method must be redefined'); |
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235 | } |
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236 | |||
237 | /** |
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238 | * {@inheritdoc} |
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239 | * @return array |
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240 | */ |
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241 | public function jsonSerialize() |
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242 | { |
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243 | return [ |
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244 | 'unit' => $this->unit->getName(), |
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245 | 'quantity' => $this->quantity, |
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246 | ]; |
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247 | } |
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248 | } |
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249 |
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: