| 1 | <?php |
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| 13 | abstract class Compound extends Variable { |
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| 14 | /** |
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| 15 | * @var Variable |
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| 16 | */ |
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| 17 | private $left; |
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| 18 | |||
| 19 | /** |
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| 20 | * @var Variable |
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| 21 | */ |
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| 22 | private $right; |
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| 23 | |||
| 24 | 107 | public function __construct($name, Variable $left, Variable $right) { |
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| 29 | |||
| 30 | /** |
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| 31 | * @return Variable |
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| 32 | */ |
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| 33 | 21 | public function left() { |
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| 36 | |||
| 37 | /** |
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| 38 | * @return Variable |
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| 39 | */ |
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| 40 | 21 | public function right() { |
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| 43 | } |
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| 44 |