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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\TypeInfo\Type; use Symfony\Component\TypeInfo\Exception\InvalidArgumentException; use Symfony\Component\TypeInfo\Type; use Symfony\Component\TypeInfo\TypeIdentifier; /** * @author Mathias Arlaud <mathias.arlaud@gmail.com> * * @template T of Type * * @extends UnionType<T|BuiltinType<TypeIdentifier::NULL>> * * @implements WrappingTypeInterface<T> */ final class NullableType extends UnionType implements WrappingTypeInterface { /** * @param T $type */ public function __construct( private readonly Type $type, ) { if ($type->isNullable()) { throw new InvalidArgumentException(\sprintf('Cannot create a "%s" with "%s" because it is already nullable.', self::class, $type)); } if ($type instanceof UnionType) { parent::__construct(Type::null(), ...$type->getTypes()); return; } parent::__construct(Type::null(), $type); } public function getWrappedType(): Type { return $this->type; } public function wrappedTypeIsSatisfiedBy(callable $specification): bool { return $this->getWrappedType()->isSatisfiedBy($specification); } public function isNullable(): bool { return true; } }
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