annotate vendor/psy/psysh/src/CodeCleaner/InstanceOfPass.php @ 19:fa3358dc1485 tip

Add ndrum files
author Chris Cannam
date Wed, 28 Aug 2019 13:14:47 +0100
parents 5fb285c0d0e3
children
rev   line source
Chris@13 1 <?php
Chris@13 2
Chris@13 3 /*
Chris@13 4 * This file is part of Psy Shell.
Chris@13 5 *
Chris@13 6 * (c) 2012-2018 Justin Hileman
Chris@13 7 *
Chris@13 8 * For the full copyright and license information, please view the LICENSE
Chris@13 9 * file that was distributed with this source code.
Chris@13 10 */
Chris@13 11
Chris@13 12 namespace Psy\CodeCleaner;
Chris@13 13
Chris@13 14 use PhpParser\Node;
Chris@13 15 use PhpParser\Node\Expr\ConstFetch;
Chris@13 16 use PhpParser\Node\Expr\Instanceof_;
Chris@13 17 use PhpParser\Node\Scalar;
Chris@13 18 use PhpParser\Node\Scalar\Encapsed;
Chris@13 19 use Psy\Exception\FatalErrorException;
Chris@13 20
Chris@13 21 /**
Chris@13 22 * Validate that the instanceof statement does not receive a scalar value or a non-class constant.
Chris@13 23 *
Chris@13 24 * @author Martin HasoĊˆ <martin.hason@gmail.com>
Chris@13 25 */
Chris@13 26 class InstanceOfPass extends CodeCleanerPass
Chris@13 27 {
Chris@13 28 const EXCEPTION_MSG = 'instanceof expects an object instance, constant given';
Chris@13 29
Chris@13 30 /**
Chris@13 31 * Validate that the instanceof statement does not receive a scalar value or a non-class constant.
Chris@13 32 *
Chris@13 33 * @throws FatalErrorException if a scalar or a non-class constant is given
Chris@13 34 *
Chris@13 35 * @param Node $node
Chris@13 36 */
Chris@13 37 public function enterNode(Node $node)
Chris@13 38 {
Chris@13 39 if (!$node instanceof Instanceof_) {
Chris@13 40 return;
Chris@13 41 }
Chris@13 42
Chris@13 43 if (($node->expr instanceof Scalar && !$node->expr instanceof Encapsed) || $node->expr instanceof ConstFetch) {
Chris@13 44 throw new FatalErrorException(self::EXCEPTION_MSG, 0, E_ERROR, null, $node->getLine());
Chris@13 45 }
Chris@13 46 }
Chris@13 47 }