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<?php |
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declare(strict_types=1); |
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namespace Smoren\ArrayView\Selectors; |
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use Smoren\ArrayView\Interfaces\ArraySelectorInterface; |
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use Smoren\ArrayView\Interfaces\ArrayViewInterface; |
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use Smoren\ArrayView\Interfaces\PipeSelectorInterface; |
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use Smoren\ArrayView\Views\ArrayView; |
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/** |
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* Represents a selector that applies a series of selectors sequentially to a source array view. |
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* |
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* ##### Example |
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* ```php |
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* $originalArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; |
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* $selector = new PipeSelector([ |
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* new SliceSelector('::2'), |
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* new MaskSelector([true, false, true, true, true]), |
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* new IndexListSelector([0, 1, 2]), |
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* new SliceSelector('1:'), |
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* ]); |
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* |
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* $view = ArrayView::toView($originalArray); |
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* $subview = $view->subview($selector); |
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* print_r($subview[':']); // [5, 7] |
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* |
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* $subview[':'] = [55, 77]; |
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* print_r($originalArray); // [1, 2, 3, 4, 55, 6, 77, 8, 9, 10] |
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* ``` |
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*/ |
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class PipeSelector implements PipeSelectorInterface |
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{ |
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/** |
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* @var array<ArraySelectorInterface> An array of selectors to be applied sequentially. |
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*/ |
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private array $selectors; |
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/** |
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* Creates a new PipeSelector instance with the provided selectors array. |
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* |
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* @param array<ArraySelectorInterface> $selectors An array of selectors to be assigned to the PipeSelector. |
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*/ |
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public function __construct(array $selectors) |
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{ |
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$this->selectors = $selectors; |
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} |
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/** |
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* Applies the series of selectors to the given source array view. |
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* |
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* @template T The type of elements in the source array view. |
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* |
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* @param ArrayViewInterface<T> $source The source array view to select from. |
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* @param bool|null $readonly Optional parameter to specify if the view should be read-only. |
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* |
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* @return ArrayViewInterface<T> The resulting array view after applying all selectors. |
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*/ |
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public function select(ArrayViewInterface $source, ?bool $readonly = null): ArrayViewInterface |
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{ |
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$view = ArrayView::toView($source, $readonly); |
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foreach ($this->selectors as $selector) { |
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$view = $selector->select($view, $readonly); |
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} |
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/** @var ArrayViewInterface<T> $view */ |
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return $view; |
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} |
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/** |
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* Checks if the series of selectors are compatible with the given array view. |
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* |
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* @template T The type of elements in the source array view. |
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* |
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* @param ArrayViewInterface<T> $view The array view to check compatibility with. |
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* |
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* @return bool True if all selectors are compatible with the array view, false otherwise. |
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*/ |
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public function compatibleWith(ArrayViewInterface $view): bool |
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{ |
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foreach ($this->selectors as $selector) { |
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if (!$selector->compatibleWith($view)) { |
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return false; |
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} |
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$view = $selector->select($view); |
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} |
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return true; |
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} |
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/** |
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* Returns the array of selectors assigned to the PipeSelector. |
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* |
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* @return array<ArraySelectorInterface> The array of selectors. |
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*/ |
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public function getValue(): array |
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{ |
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return $this->selectors; |
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} |
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} |
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Smoren /
array-view-php
