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<?php |
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namespace AmaTeam\TreeAccess; |
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use AmaTeam\TreeAccess\API\Exception\IllegalTargetException; |
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use AmaTeam\TreeAccess\API\Exception\MissingNodeException; |
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use AmaTeam\TreeAccess\API\NodeInterface; |
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use AmaTeam\TreeAccess\Locator\Context; |
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use AmaTeam\TreeAccess\Type\Registry; |
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class Locator |
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{ |
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/** |
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* @var Registry |
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*/ |
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private $registry; |
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public function __construct(Registry $registry) |
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{ |
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$this->registry = $registry; |
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} |
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/** |
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* @param NodeInterface $root |
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* @param array $path |
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* @param Context $context |
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* |
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* @return NodeInterface|null |
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* |
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* @throws MissingNodeException |
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* @throws IllegalTargetException |
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*/ |
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public function locate(NodeInterface $root, array $path, Context $context) |
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{ |
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$currentPath = []; |
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$cursor = $root; |
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foreach ($path as $segment) { |
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$currentPath[] = $segment; |
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$value = &$cursor->getValue(); |
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$accessor = $this->registry->getAccessor(gettype($value)); |
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if (!$accessor) { |
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if ($context->shouldIgnoreIllegal()) { |
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return null; |
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} |
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throw new IllegalTargetException($currentPath); |
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} |
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if (!$accessor || !$accessor->exists($value, $segment)) { |
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if ($context->shouldIgnoreMissing()) { |
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return null; |
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} |
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throw new MissingNodeException($currentPath); |
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} |
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$cursor = $accessor->read($value, $segment); |
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} |
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return Node::withPath($cursor, $path); |
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} |
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} |
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ama-team /
php-tree-access
