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<?php declare(strict_types=1);
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/*
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 * This file is part of PHPUnit.
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 *
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 * (c) Sebastian Bergmann <sebastian@phpunit.de>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace PHPUnit\TextUI\XmlConfiguration;
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use IteratorAggregate;
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/**
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 * @internal This class is not covered by the backward compatibility promise for PHPUnit
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 *
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 * @psalm-immutable
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 *
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 * @template-implements IteratorAggregate<int, Group>
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 */
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final class GroupCollection implements IteratorAggregate
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{
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    /**
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     * @var Group[]
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     */
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    private $groups;
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    /**
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     * @param Group[] $groups
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     */
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    public static function fromArray(array $groups): self
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    {
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        return new self(...$groups);
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    }
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    private function __construct(Group ...$groups)
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    {
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        $this->groups = $groups;
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    }
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    /**
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     * @return Group[]
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     */
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    public function asArray(): array
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    {
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        return $this->groups;
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    }
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    /**
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     * @return string[]
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     */
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    public function asArrayOfStrings(): array
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    {
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        $result = [];
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        foreach ($this->groups as $group) {
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            $result[] = $group->name();
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        }
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        return $result;
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    }
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    public function isEmpty(): bool
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    {
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        return empty($this->groups);
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    }
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    public function getIterator(): GroupCollectionIterator
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    {
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        return new GroupCollectionIterator($this);
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    }
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}