rector/rules/DowngradePhp71/Rector/TryCatch/DowngradePipeToMultiCatchExceptionRector.php

<?php

declare(strict_types=1);

namespace Rector\DowngradePhp71\Rector\TryCatch;

use PhpParser\Node;
use PhpParser\Node\Stmt\Catch_;
use PhpParser\Node\Stmt\TryCatch;
use Rector\Core\Rector\AbstractRector;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;

/**
 * @see \Rector\Tests\DowngradePhp71\Rector\TryCatch\DowngradePipeToMultiCatchExceptionRector\DowngradePipeToMultiCatchExceptionRectorTest
 */
final class DowngradePipeToMultiCatchExceptionRector extends AbstractRector
{
    public function getRuleDefinition(): RuleDefinition
    {
        return new RuleDefinition(
            'Downgrade single one | separated to multi catch exception',
            [
                new CodeSample(
                    <<<'CODE_SAMPLE'
try {
    // Some code...
 } catch (ExceptionType1 | ExceptionType2 $exception) {
    $sameCode;
 }
CODE_SAMPLE
                    ,
<<<'CODE_SAMPLE'
try {
    // Some code...
} catch (ExceptionType1 $exception) {
    $sameCode;
} catch (ExceptionType2 $exception) {
    $sameCode;
}
CODE_SAMPLE
                ),
            ]
        );
    }

    /**
     * @return array<class-string<Node>>
     */
    public function getNodeTypes(): array
    {
        return [TryCatch::class];
    }

    /**
     * @param TryCatch $node
     */
    public function refactor(Node $node): ?Node
    {
        $originalCatches = $node->catches;
        foreach ($node->catches as $key => $catch) {
            if (count($catch->types) === 1) {
                continue;
            }

            $types = $catch->types;
            $node->catches[$key]->types = [$catch->types[0]];
            foreach ($types as $keyCatchType => $catchType) {
                if ($keyCatchType === 0) {
                    continue;
                }

                $this->addNodeAfterNode(new Catch_([$catchType], $catch->var, $catch->stmts), $node->catches[$key]);
            }
        }

        if ($this->nodeComparator->areNodesEqual($originalCatches, $node->catches)) {
            return null;
        }

        return $node;
    }
}