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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 Remorhaz\JSON\Data\Iterator\ValueIteratorFactoryInterface; |
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use Remorhaz\JSON\Data\Value\StructValueInterface; |
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use function iterator_count; |
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use Remorhaz\JSON\Data\Value\ArrayValueInterface; |
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use Remorhaz\JSON\Data\Value\NodeValueInterface; |
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use Remorhaz\JSON\Data\Value\ScalarValueInterface; |
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final class ValueFetcher implements ValueFetcherInterface |
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{ |
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private $valueIteratorFactory; |
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public function __construct(ValueIteratorFactoryInterface $valueIteratorFactory) |
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{ |
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$this->valueIteratorFactory = $valueIteratorFactory; |
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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[] |
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*/ |
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public function fetchValueChildren( |
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Matcher\ChildMatcherInterface $matcher, |
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NodeValueInterface $value |
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): array { |
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if ($value instanceof ScalarValueInterface) { |
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return []; |
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} |
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if ($value instanceof StructValueInterface) { |
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return $this->fetchChildren($value, $matcher); |
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} |
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throw new Exception\UnexpectedNodeValueFetchedException($value); |
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} |
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public function fetchValueDeepChildren( |
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Matcher\ChildMatcherInterface $matcher, |
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NodeValueInterface $value |
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): array { |
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if ($value instanceof ScalarValueInterface) { |
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return []; |
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} |
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if ($value instanceof StructValueInterface) { |
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return $this->fetchDeepChildren($value, $matcher); |
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} |
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throw new Exception\UnexpectedNodeValueFetchedException($value); |
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} |
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private function fetchChildren(NodeValueInterface $value, Matcher\ChildMatcherInterface $matcher): array |
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{ |
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if (!$value instanceof StructValueInterface) { |
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// TODO: extract correct argument type? |
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throw new Exception\UnexpectedNodeValueFetchedException($value); |
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} |
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$results = []; |
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foreach ($value->createChildIterator() as $index => $element) { |
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if ($matcher->match($index, $element, $value)) { |
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$results[] = $element; |
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} |
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} |
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return $results; |
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} |
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private function fetchDeepChildren(NodeValueInterface $value, Matcher\ChildMatcherInterface $matcher): array |
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{ |
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if (!$value instanceof StructValueInterface) { |
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// TODO: extract correct argument type? |
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throw new Exception\UnexpectedNodeValueFetchedException($value); |
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} |
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$results = []; |
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foreach ($value->createChildIterator() as $index => $element) { |
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if ($matcher->match($index, $element, $value)) { |
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$results[] = $element; |
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} |
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array_push( |
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$results, |
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...$this->fetchValueDeepChildren($matcher, $element) |
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); |
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} |
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return $results; |
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} |
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public function fetchArrayLength(NodeValueInterface $value): ?int |
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{ |
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return $value instanceof ArrayValueInterface |
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? iterator_count($value->createChildIterator()) |
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: null; |
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} |
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} |
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remorhaz /
php-json-path
