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<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2017 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Psy\CodeCleaner;
use PhpParser\Node;
use PhpParser\Node\Expr\FuncCall as FunctionCall;
use PhpParser\Node\Expr\MethodCall;
use PhpParser\Node\Expr\StaticCall;
use Psy\Exception\FatalErrorException;
/**
* Validate that the user did not use the call-time pass-by-reference that causes a fatal error.
*
* As of PHP 5.4.0, call-time pass-by-reference was removed, so using it will raise a fatal error.
*
* @author Martin Hasoň <martin.hason@gmail.com>
*/
class CallTimePassByReferencePass extends CodeCleanerPass
{
/**
* Validate of use call-time pass-by-reference.
*
* @throws RuntimeException if the user used call-time pass-by-reference in PHP >= 5.4.0
*
* @param Node $node
*/
public function enterNode(Node $node)
{
if (version_compare(PHP_VERSION, '5.4', '<')) {
return;
}
if (!$node instanceof FunctionCall && !$node instanceof MethodCall && !$node instanceof StaticCall) {
return;
}
foreach ($node->args as $arg) {
if ($arg->byRef) {
throw new FatalErrorException('Call-time pass-by-reference has been removed');
}
}
}
}