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/home/getspomw/itechservicellc.com/vendor/psy/psysh/src/CodeCleaner/FunctionReturnInWriteContextPass.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\Array_;
use PhpParser\Node\Expr\Assign;
use PhpParser\Node\Expr\FuncCall;
use PhpParser\Node\Expr\Isset_;
use PhpParser\Node\Expr\MethodCall;
use PhpParser\Node\Expr\StaticCall;
use PhpParser\Node\Stmt\Unset_;
use PhpParser\Node\VariadicPlaceholder;
use Psy\Exception\FatalErrorException;

/**
 * Validate that the functions are used correctly.
 *
 * @author Martin Hasoň <martin.hason@gmail.com>
 */
class FunctionReturnInWriteContextPass extends CodeCleanerPass
{
    const ISSET_MESSAGE = 'Cannot use isset() on the result of an expression (you can use "null !== expression" instead)';
    const EXCEPTION_MESSAGE = "Can't use function return value in write context";

/**
     * Validate that the functions are used correctly.
     *
     * @throws FatalErrorException if a function is passed as an argument reference
     * @throws FatalErrorException if a function is used as an argument in the isset
     * @throws FatalErrorException if a value is assigned to a function
     *
     * @param Node $node
     *
     * @return int|Node|null Replacement node (or special return value)
     */
    public function enterNode(Node $node)
    {
        if ($node instanceof Array_ || $this->isCallNode($node)) {
            $items = $node instanceof Array_ ? $node->items : $node->args;
            foreach ($items as $item) {
                if ($item instanceof VariadicPlaceholder) {
                    continue;
                }

if ($item && $item->byRef && $this->isCallNode($item->value)) {
                    throw new FatalErrorException(self::EXCEPTION_MESSAGE, 0, \E_ERROR, null, $node->getStartLine());
                }
            }
        } elseif ($node instanceof Isset_ || $node instanceof Unset_) {
            foreach ($node->vars as $var) {
                if (!$this->isCallNode($var)) {
                    continue;
                }

$msg = $node instanceof Isset_ ? self::ISSET_MESSAGE : self::EXCEPTION_MESSAGE;
                throw new FatalErrorException($msg, 0, \E_ERROR, null, $node->getStartLine());
            }
        } elseif ($node instanceof Assign && $this->isCallNode($node->var)) {
            throw new FatalErrorException(self::EXCEPTION_MESSAGE, 0, \E_ERROR, null, $node->getStartLine());
        }
    }

private function isCallNode(Node $node): bool
    {
        return $node instanceof FuncCall || $node instanceof MethodCall || $node instanceof StaticCall;
    }
}

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Name	Size	Perms	Modified	Actions
AbstractClassPass.php	2.33 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
AssignThisVariablePass.php	1.09 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
CalledClassPass.php	2.69 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
CallTimePassByReferencePass.php	1.57 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
CodeCleanerPass.php	415 B	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
EmptyArrayDimFetchPass.php	1.99 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
ExitPass.php	859 B	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
FinalClassPass.php	1.75 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
FunctionContextPass.php	1.52 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
FunctionReturnInWriteContextPass.php	2.69 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
ImplicitReturnPass.php	4.12 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
IssetPass.php	1.37 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
LabelContextPass.php	2.55 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
LeavePsyshAlonePass.php	992 B	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
ListPass.php	2.81 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
LoopContextPass.php	3.95 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
MagicConstantsPass.php	1.04 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
NamespaceAwarePass.php	2.29 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
NamespacePass.php	2.78 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
NoReturnValue.php	828 B	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
PassableByReferencePass.php	4.48 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
RequirePass.php	4.78 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
ReturnTypePass.php	3.63 KB	lrw-r--r--	2025-10-28 20:23:24	Edit Download recursive recursive
StrictTypesPass.php	3.11 KB	lrw-r--r--	2025-10-28 20:23:26	Edit Download recursive recursive
UseStatementPass.php	4.66 KB	lrw-r--r--	2025-10-28 20:23:26	Edit Download recursive recursive
ValidClassNamePass.php	9.17 KB	lrw-r--r--	2025-10-28 20:23:26	Edit Download recursive recursive
ValidConstructorPass.php	4.03 KB	lrw-r--r--	2025-10-28 20:23:26	Edit Download recursive recursive
ValidFunctionNamePass.php	2.37 KB	lrw-r--r--	2025-10-28 20:23:26	Edit Download recursive recursive

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