RemoveUselessIsObjectCheckRector.php

<?php

declare (strict_types=1);
namespace Rector\CodeQuality\Rector\BooleanAnd;

use PhpParser\Node;
use PhpParser\Node\Expr\BinaryOp\BooleanAnd;
use PhpParser\Node\Expr\FuncCall;
use PhpParser\Node\Expr\Instanceof_;
use Rector\Rector\AbstractRector;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
 * @see \Rector\Tests\CodeQuality\Rector\BooleanAnd\RemoveUselessIsObjectCheckRector\RemoveUselessIsObjectCheckRectorTest
 */
final class RemoveUselessIsObjectCheckRector extends AbstractRector
{
    public function getRuleDefinition() : RuleDefinition
    {
        return new RuleDefinition('Remove useless is_object() check on combine with instanceof check', [new CodeSample('is_object($obj) && $obj instanceof DateTime', '$obj instanceof DateTime')]);
    }
    /**
     * @return array<class-string<Node>>
     */
    public function getNodeTypes() : array
    {
        return [BooleanAnd::class];
    }
    /**
     * @param BooleanAnd $node
     */
    public function refactor(Node $node) : ?Node
    {
        if ($node->left instanceof FuncCall && $this->isName($node->left, 'is_object') && $node->right instanceof Instanceof_) {
            return $this->processRemoveUselessIsObject($node->left, $node->right);
        }
        if (!$node->left instanceof Instanceof_) {
            return null;
        }
        if (!$node->right instanceof FuncCall) {
            return null;
        }
        if (!$this->isName($node->right, 'is_object')) {
            return null;
        }
        return $this->processRemoveUselessIsObject($node->right, $node->left);
    }
    private function processRemoveUselessIsObject(FuncCall $funcCall, Instanceof_ $instanceof) : ?Instanceof_
    {
        if ($funcCall->isFirstClassCallable()) {
            return null;
        }
        $args = $funcCall->getArgs();
        if (!isset($args[0])) {
            return null;
        }
        if (!$this->nodeComparator->areNodesEqual($args[0]->value, $instanceof->expr)) {
            return null;
        }
        return $instanceof;
    }
}