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InterfacePool.php
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90 lines (79 loc) · 1.78 KB
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<?php
declare(strict_types=1);
namespace PHPJava\Core\JVM;
use PHPJava\Core\Stream\Reader\ReaderInterface;
use PHPJava\Exceptions\ReadOnlyException;
use PHPJava\Utilities\DebugTool;
class InterfacePool implements \ArrayAccess, \Countable, \IteratorAggregate
{
/**
* @var int[]
*/
private $entries = [];
/**
* @var ReaderInterface
*/
private $reader;
public function __construct(
ReaderInterface $reader,
int $entries,
ConstantPool $constantPool,
DebugTool $debugTool
) {
$this->reader = $reader;
for ($i = 0; $i < $entries; $i++) {
$this->entries[$i] = $reader->getReader()->readUnsignedShort();
}
}
/**
* @return int[]
*/
public function getEntries()
{
return $this->entries;
}
/**
* @param int $offset
* @return bool
*/
public function offsetExists($offset)
{
return isset($this->entries[$offset]);
}
/**
* @param int $offset
* @return int
*/
public function offsetGet($offset)
{
return $this->entries[$offset];
}
/**
* @return int
*/
public function count()
{
return count($this->entries);
}
/**
* @throws ReadOnlyException
*/
public function offsetSet($offset, $value)
{
throw new ReadOnlyException('You cannot rewrite datum. The Interface Pool is read-only.');
}
/**
* @throws ReadOnlyException
*/
public function offsetUnset($offset)
{
throw new ReadOnlyException('You cannot rewrite datum. The Interface Pool is read-only.');
}
/**
* @return \ArrayIterator<int>
*/
public function getIterator()
{
return new \ArrayIterator($this->entries);
}
}