Total Complexity | 6 |
Total Lines | 25 |
Duplicated Lines | 0 % |
Changes | 1 | ||
Bugs | 0 | Features | 0 |
1 | <?php |
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10 | final class SpecialValue |
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11 | { |
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12 | private static self $empty; |
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13 | |||
14 | public static function init(): void |
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15 | { |
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16 | self::$empty = new self(); |
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17 | } |
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18 | |||
19 | /** |
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20 | * An empty value that is used to indicate that a value has not been set. |
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21 | */ |
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22 | public static function notSet(): self |
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23 | { |
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24 | return self::$empty; |
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25 | } |
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26 | |||
27 | public static function isNotSet(mixed $value): bool |
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28 | { |
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29 | return $value === self::$empty; |
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30 | } |
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31 | |||
32 | public static function isEmpty(mixed $value): bool |
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35 | } |
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36 | } |
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37 | |||
38 | SpecialValue::init(); |
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39 |