CallTimePassByReferencePass.php
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CallTimePassByReferencePass.php
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	<?php

	/*
	* This file is part of Psy Shell.
	*
	* (c) 2012-2023 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;
	use PhpParser\Node\Expr\MethodCall;
	use PhpParser\Node\Expr\StaticCall;
	use PhpParser\Node\VariadicPlaceholder;
	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
	{
	const EXCEPTION_MESSAGE = 'Call-time pass-by-reference has been removed';

	/**
	* Validate of use call-time pass-by-reference.
	*
	* @throws FatalErrorException if the user used call-time pass-by-reference
	*
	* @param Node $node
	*
	* @return int\|Node\|null Replacement node (or special return value)
	*/
	public function enterNode(Node $node)
	{
	if (!$node instanceof FuncCall && !$node instanceof MethodCall && !$node instanceof StaticCall) {
	return;
	}

	foreach ($node->args as $arg) {
	if ($arg instanceof VariadicPlaceholder) {
	continue;
	}

	if ($arg->byRef) {
	throw new FatalErrorException(self::EXCEPTION_MESSAGE, 0, \E_ERROR, null, $node->getStartLine());
	}
	}
	}
	}