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<?php declare(strict_types = 1);
namespace Apicart\FQL\Generator\Native;
use Apicart\FQL\Generator\Common\AbstractVisitor;
use Apicart\FQL\Token\Node\LogicalNot;
use Apicart\FQL\Token\Node\Mandatory;
use Apicart\FQL\Token\Node\Prohibited;
use Apicart\FQL\Tokenizer\Tokenizer;
use Apicart\FQL\Value\AbstractNode;
use LogicException;
final class UnaryOperator extends AbstractVisitor
{
public function accept(AbstractNode $node): bool
return $node instanceof Mandatory || $node instanceof Prohibited || $node instanceof LogicalNot;
}
public function visit(AbstractNode $node, ?AbstractVisitor $subVisitor = null, ?array $options = null): string
if (! $node instanceof Mandatory && ! $node instanceof Prohibited && ! $node instanceof LogicalNot) {
throw new LogicException('Implementation accepts instance of Mandatory, Prohibited or LogicalNot Node');
if ($subVisitor === null) {
throw new LogicException('Implementation requires sub-visitor');
$clause = $subVisitor->visit($node->getOperand(), $subVisitor, $options);
$padding = '';
if ($node->getToken()->getType() === Tokenizer::TOKEN_LOGICAL_NOT) {
$padding = ' ';
return "{$node->getToken()->getLexeme()}{$padding}{$clause}";
apicart /
fql
