Yiisoft\Validator\SimpleRuleHandlerContainer

Complexity

Total Complexity

4

Size/Duplication

Total Lines	21
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

1 Method

Rating	Name	Duplication	Size	Complexity
A	resolve()	0	17	4

<?php

declare(strict_types=1);

namespace Yiisoft\Validator;

use Yiisoft\Validator\Exception\RuleHandlerInterfaceNotImplementedException;
use Yiisoft\Validator\Exception\RuleHandlerNotFoundException;

use function array_key_exists;

final class SimpleRuleHandlerContainer implements RuleHandlerResolverInterface
{
    private array $instances = [];

    public function resolve(string $className): RuleHandlerInterface
    {
        if (!class_exists($className)) {
            throw new RuleHandlerNotFoundException($className);
        }

        if (array_key_exists($className, $this->instances)) {
            return $this->instances[$className];
        }

        $classInstance = new $className();

        if (!$classInstance instanceof RuleHandlerInterface) {
            throw new RuleHandlerInterfaceNotImplementedException($className);
        }

        return $this->instances[$className] = $classInstance;
    }
}