annotate vendor/psy/psysh/src/CodeCleaner/AssignThisVariablePass.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\Assign;
Chris@13 16 use PhpParser\Node\Expr\Variable;
Chris@13 17 use Psy\Exception\FatalErrorException;
Chris@13 18
Chris@13 19 /**
Chris@13 20 * Validate that the user input does not assign the `$this` variable.
Chris@13 21 *
Chris@13 22 * @author Martin HasoĊˆ <martin.hason@gmail.com>
Chris@13 23 */
Chris@13 24 class AssignThisVariablePass extends CodeCleanerPass
Chris@13 25 {
Chris@13 26 /**
Chris@13 27 * Validate that the user input does not assign the `$this` variable.
Chris@13 28 *
Chris@13 29 * @throws RuntimeException if the user assign the `$this` variable
Chris@13 30 *
Chris@13 31 * @param Node $node
Chris@13 32 */
Chris@13 33 public function enterNode(Node $node)
Chris@13 34 {
Chris@13 35 if ($node instanceof Assign && $node->var instanceof Variable && $node->var->name === 'this') {
Chris@13 36 throw new FatalErrorException('Cannot re-assign $this', 0, E_ERROR, null, $node->getLine());
Chris@13 37 }
Chris@13 38 }
Chris@13 39 }