<?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();
}
}