62 lines
1.1 KiB
PHP
62 lines
1.1 KiB
PHP
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<?php
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namespace Illuminate\Container;
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use Countable;
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use IteratorAggregate;
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use Traversable;
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class RewindableGenerator implements Countable, IteratorAggregate
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{
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/**
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* The generator callback.
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*
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* @var callable
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*/
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protected $generator;
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/**
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* The number of tagged services.
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*
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* @var callable|int
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*/
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protected $count;
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/**
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* Create a new generator instance.
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*
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* @param callable $generator
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* @param callable|int $count
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* @return void
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*/
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public function __construct(callable $generator, $count)
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{
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$this->count = $count;
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$this->generator = $generator;
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}
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/**
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* Get an iterator from the generator.
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*
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* @return \Traversable
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*/
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public function getIterator(): Traversable
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{
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return ($this->generator)();
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}
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/**
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* Get the total number of tagged services.
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*
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* @return int
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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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