68 lines
1.8 KiB
PHP
68 lines
1.8 KiB
PHP
<?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());
|
|
}
|
|
}
|
|
}
|