Chris@13: <?php
Chris@13: 
Chris@13: /*
Chris@13:  * This file is part of Psy Shell.
Chris@13:  *
Chris@13:  * (c) 2012-2018 Justin Hileman
Chris@13:  *
Chris@13:  * For the full copyright and license information, please view the LICENSE
Chris@13:  * file that was distributed with this source code.
Chris@13:  */
Chris@13: 
Chris@13: namespace Psy\CodeCleaner;
Chris@13: 
Chris@13: use PhpParser\Node;
Chris@13: use PhpParser\Node\Expr\FuncCall;
Chris@13: use PhpParser\Node\Expr\MethodCall;
Chris@13: use PhpParser\Node\Expr\StaticCall;
Chris@13: use Psy\Exception\FatalErrorException;
Chris@13: 
Chris@13: /**
Chris@13:  * Validate that the user did not use the call-time pass-by-reference that causes a fatal error.
Chris@13:  *
Chris@13:  * As of PHP 5.4.0, call-time pass-by-reference was removed, so using it will raise a fatal error.
Chris@13:  *
Chris@13:  * @author Martin Hasoň <martin.hason@gmail.com>
Chris@13:  */
Chris@13: class CallTimePassByReferencePass extends CodeCleanerPass
Chris@13: {
Chris@13:     const EXCEPTION_MESSAGE = 'Call-time pass-by-reference has been removed';
Chris@13: 
Chris@13:     /**
Chris@13:      * Validate of use call-time pass-by-reference.
Chris@13:      *
Chris@16:      * @throws RuntimeException if the user used call-time pass-by-reference
Chris@13:      *
Chris@13:      * @param Node $node
Chris@13:      */
Chris@13:     public function enterNode(Node $node)
Chris@13:     {
Chris@13:         if (!$node instanceof FuncCall && !$node instanceof MethodCall && !$node instanceof StaticCall) {
Chris@13:             return;
Chris@13:         }
Chris@13: 
Chris@13:         foreach ($node->args as $arg) {
Chris@13:             if ($arg->byRef) {
Chris@13:                 throw new FatalErrorException(self::EXCEPTION_MESSAGE, 0, E_ERROR, null, $node->getLine());
Chris@13:             }
Chris@13:         }
Chris@13:     }
Chris@13: }