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<?php |
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declare(strict_types=1); |
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namespace Remorhaz\JSON\Path\Runtime; |
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use Iterator; |
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use Remorhaz\JSON\Data\Value\StructValueInterface; |
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use Remorhaz\JSON\Data\Value\NodeValueInterface; |
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use Remorhaz\JSON\Data\Value\ScalarValueInterface; |
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use Remorhaz\JSON\Path\Runtime\Matcher\SortedChildMatcherInterface; |
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use function ksort; |
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use const SORT_ASC; |
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use const SORT_NUMERIC; |
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final class ValueFetcher implements ValueFetcherInterface |
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{ |
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/** |
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* @param Matcher\ChildMatcherInterface $matcher |
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* @param NodeValueInterface $value |
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* @return NodeValueInterface[]|Iterator |
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*/ |
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public function createChildrenIterator( |
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Matcher\ChildMatcherInterface $matcher, |
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NodeValueInterface $value |
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): Iterator { |
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if ($value instanceof ScalarValueInterface) { |
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return; |
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} |
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if ($value instanceof StructValueInterface) { |
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yield from $matcher instanceof SortedChildMatcherInterface |
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? $this->createSortedChildStructIterator($matcher, $value) |
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: $this->createUnsortedChildStructIterator($matcher, $value); |
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return; |
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} |
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throw new Exception\UnexpectedNodeValueFetchedException($value); |
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} |
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private function createUnsortedChildStructIterator( |
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Matcher\ChildMatcherInterface $matcher, |
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NodeValueInterface $value |
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): Iterator { |
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if (!$value instanceof StructValueInterface) { |
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return; |
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} |
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foreach ($value->createChildIterator() as $index => $element) { |
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if ($matcher->match($index, $element, $value)) { |
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yield $element; |
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} |
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} |
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} |
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private function createSortedChildStructIterator( |
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Matcher\SortedChildMatcherInterface $matcher, |
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NodeValueInterface $value |
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): Iterator { |
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if (!$value instanceof StructValueInterface) { |
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return; |
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} |
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$sortableElements = []; |
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foreach ($value->createChildIterator() as $index => $element) { |
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if ($matcher->match($index, $element, $value)) { |
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$sortIndex = $matcher->getSortIndex($index, $element, $value); |
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$sortableElements[$sortIndex] = $element; |
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} |
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} |
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ksort($sortableElements, SORT_ASC | SORT_NUMERIC); |
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yield from $sortableElements; |
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} |
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public function createDeepChildrenIterator( |
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Matcher\ChildMatcherInterface $matcher, |
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NodeValueInterface $value |
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): Iterator { |
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if ($value instanceof ScalarValueInterface) { |
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return; |
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} |
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if ($value instanceof StructValueInterface) { |
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foreach ($value->createChildIterator() as $index => $element) { |
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if ($matcher->match($index, $element, $value)) { |
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yield $element; |
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} |
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yield from $this->createDeepChildrenIterator($matcher, $element); |
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} |
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return; |
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} |
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throw new Exception\UnexpectedNodeValueFetchedException($value); |
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} |
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} |
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remorhaz /
php-json-path
