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PATH: home / lab2454c / westernclear.net / vendor / psy / psysh / src / CodeCleaner

<?php

/*
 * This file is part of Psy Shell.
 *
 * (c) 2012-2022 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\BinaryOp;
use PhpParser\Node\Expr\ClassConstFetch;
use PhpParser\Node\Expr\ConstFetch;
use PhpParser\Node\Expr\Instanceof_;
use PhpParser\Node\Scalar;
use PhpParser\Node\Scalar\Encapsed;
use Psy\Exception\FatalErrorException;

/**
 * Validate that the instanceof statement does not receive a scalar value or a non-class constant.
 *
 * @author Martin Hasoň <martin.hason@gmail.com>
 */
class InstanceOfPass extends CodeCleanerPass
{
    const EXCEPTION_MSG = 'instanceof expects an object instance, constant given';

private $atLeastPhp73;

public function __construct()
    {
        $this->atLeastPhp73 = \version_compare(\PHP_VERSION, '7.3', '>=');
    }

/**
     * Validate that the instanceof statement does not receive a scalar value or a non-class constant.
     *
     * @throws FatalErrorException if a scalar or a non-class constant is given
     *
     * @param Node $node
     */
    public function enterNode(Node $node)
    {
        // Basically everything is allowed in PHP 7.3 :)
        if ($this->atLeastPhp73) {
            return;
        }

if (!$node instanceof Instanceof_) {
            return;
        }

if (($node->expr instanceof Scalar && !$node->expr instanceof Encapsed) ||
            $node->expr instanceof BinaryOp ||
            $node->expr instanceof Array_ ||
            $node->expr instanceof ConstFetch ||
            $node->expr instanceof ClassConstFetch
        ) {
            throw new FatalErrorException(self::EXCEPTION_MSG, 0, \E_ERROR, null, $node->getLine());
        }
    }
}

[-] IssetPass.php [edit]
[-] FunctionReturnInWriteContextPass.php [edit]
[-] ExitPass.php [edit]
[-] MagicConstantsPass.php [edit]
[-] ImplicitReturnPass.php [edit]
[-] StrictTypesPass.php [edit]
[+] ..
[-] AssignThisVariablePass.php [edit]
[-] InstanceOfPass.php [edit]
[-] FinalClassPass.php [edit]
[-] ValidConstructorPass.php [edit]
[-] LoopContextPass.php [edit]
[-] PassableByReferencePass.php [edit]
[-] CallTimePassByReferencePass.php [edit]
[-] AbstractClassPass.php [edit]
[-] FunctionContextPass.php [edit]
[-] NamespaceAwarePass.php [edit]
[-] NamespacePass.php [edit]
[-] UseStatementPass.php [edit]
[-] ReturnTypePass.php [edit]
[-] RequirePass.php [edit]
[-] ListPass.php [edit]
[-] ValidClassNamePass.php [edit]
[-] LeavePsyshAlonePass.php [edit]
[-] CodeCleanerPass.php [edit]
[-] NoReturnValue.php [edit]
[-] LabelContextPass.php [edit]
[-] CalledClassPass.php [edit]
[-] EmptyArrayDimFetchPass.php [edit]
[-] ValidFunctionNamePass.php [edit]