ElementsGenerator.php
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ElementsGenerator.php
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	<?php
	namespace Eris\Generator;

	use Eris\Generator;
	use Eris\Generators;
	use Eris\Random\RandomRange;

	function elements(/$a, $b, .../)
	{
	return call_user_func_array(
	[Generators::class, 'elements'],
	func_get_args()
	);
	}

	/**
	* @psalm-template T
	* @template-implements Generator<T>
	*/
	class ElementsGenerator implements Generator
	{
	private $domain;

	public static function fromArray(array $domain)
	{
	return new self($domain);
	}

	private function __construct($domain)
	{
	$this->domain = $domain;
	}

	public function __invoke($_size, RandomRange $rand)
	{
	$index = $rand->rand(0, count($this->domain) - 1);
	return GeneratedValueSingle::fromJustValue($this->domain[$index], 'elements');
	}

	public function shrink(GeneratedValue $element)
	{
	return $element;
	}
	}