44 lines
1.0 KiB
PHP
44 lines
1.0 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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 Symfony\Component\DependencyInjection\Argument;
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/**
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* @internal
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*/
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class RewindableGenerator implements \IteratorAggregate, \Countable
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{
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private \Closure $generator;
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private \Closure|int $count;
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public function __construct(callable $generator, int|callable $count)
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{
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$this->generator = $generator instanceof \Closure ? $generator : \Closure::fromCallable($generator);
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$this->count = \is_callable($count) && !$count instanceof \Closure ? \Closure::fromCallable($count) : $count;
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}
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public function getIterator(): \Traversable
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{
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$g = $this->generator;
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return $g();
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}
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public function count(): int
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{
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if (\is_callable($count = $this->count)) {
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$this->count = $count();
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}
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return $this->count;
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}
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}
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