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<?php namespace Wordfence\MmdbReader; use Wordfence\MmdbReader\Exception\InvalidOperationException; class NodeRecord { private $reader; private $value; public function __construct($reader, $value) { $this->reader = $reader; $this->value = $value; } public function getValue() { return $this->value; } public function isNodePointer() { return $this->value < $this->reader->getNodeCount(); } public function getNextNode() { if (!$this->isNodePointer()) throw new InvalidOperationException('The next node was requested for a record that is not a node pointer'); try { return $this->reader->read($this->getValue()); } catch (InvalidOperationException $e) { throw new FormatException('Invalid node pointer found in database', $e); } } public function isNullPointer() { return $this->value === $this->reader->getNodeCount(); } public function isDataPointer() { return $this->value > $this->reader->getNodeCount(); } public function getDataAddress() { if (!$this->isDataPointer()) throw new InvalidOperationException('The data address was requested for a record that is not a data pointer'); return $this->value - $this->reader->getNodeCount() + $this->reader->getSearchTreeSectionSize(); } }