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annotate vendor/psy/psysh/src/CodeCleaner/AssignThisVariablePass.php @ 19:fa3358dc1485 tip
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author | Chris Cannam |
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date | Wed, 28 Aug 2019 13:14:47 +0100 |
parents | 5fb285c0d0e3 |
children |
rev | line source |
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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 `$this` variable. |
Chris@13 | 21 * |
Chris@13 | 22 * @author Martin HasoĊ <martin.hason@gmail.com> |
Chris@13 | 23 */ |
Chris@13 | 24 class AssignThisVariablePass extends CodeCleanerPass |
Chris@13 | 25 { |
Chris@13 | 26 /** |
Chris@13 | 27 * Validate that the user input does not assign the `$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 } |