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52 lines
1.0 KiB
52 lines
1.0 KiB
3 years ago
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<?php
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namespace DeepCopy\TypeFilter\Spl;
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use Closure;
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use DeepCopy\DeepCopy;
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use DeepCopy\TypeFilter\TypeFilter;
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use SplDoublyLinkedList;
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/**
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* @final
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*/
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class SplDoublyLinkedListFilter implements TypeFilter
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{
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private $copier;
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public function __construct(DeepCopy $copier)
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{
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$this->copier = $copier;
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}
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/**
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* {@inheritdoc}
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*/
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public function apply($element)
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{
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$newElement = clone $element;
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$copy = $this->createCopyClosure();
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return $copy($newElement);
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}
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private function createCopyClosure()
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{
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$copier = $this->copier;
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$copy = function (SplDoublyLinkedList $list) use ($copier) {
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// Replace each element in the list with a deep copy of itself
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for ($i = 1; $i <= $list->count(); $i++) {
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$copy = $copier->recursiveCopy($list->shift());
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$list->push($copy);
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}
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return $list;
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};
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return Closure::bind($copy, null, DeepCopy::class);
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}
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}
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