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<?php
namespace Doctrine\DBAL\Driver\OCI8;
use Doctrine\DBAL\SQL\Parser\Visitor;
use function count;
use function implode;
/**
* Converts positional (?) into named placeholders (:param<num>).
*
* Oracle does not support positional parameters, hence this method converts all
* positional parameters into artificially named parameters.
*
* @internal This class is not covered by the backward compatibility promise
*/
final class ConvertPositionalToNamedPlaceholders implements Visitor
{
/** @var list<string> */
private $buffer = [];
/** @var array<int,string> */
private $parameterMap = [];
public function acceptOther(string $sql): void
{
$this->buffer[] = $sql;
}
public function acceptPositionalParameter(string $sql): void
{
$position = count($this->parameterMap) + 1;
$param = ':param' . $position;
$this->parameterMap[$position] = $param;
$this->buffer[] = $param;
}
public function acceptNamedParameter(string $sql): void
{
$this->buffer[] = $sql;
}
public function getSQL(): string
{
return implode('', $this->buffer);
}
/**
* @return array<int,string>
*/
public function getParameterMap(): array
{
return $this->parameterMap;
}
}