<?php declare(strict_types=1); /* * This file is part of sebastian/type. * * (c) Sebastian Bergmann <sebastian@phpunit.de> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace SebastianBergmann\Type; final class NullType extends Type { public function isAssignable(Type $other): bool { return !($other instanceof VoidType); } public function name(): string { return 'null'; } public function asString(): string { return 'null'; } public function allowsNull(): bool { return true; } /** * @psalm-assert-if-true NullType $this */ public function isNull(): bool { return true; } }