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<?php
namespace Vanderlee\Comprehend\Core\Context;
use DomainException;
use Vanderlee\Comprehend\Directive\Prefer;
trait PreferContextTrait
{
private $preference = [];
/**
* @param $preference
*
* @throws DomainException
*/
private static function assertPreference($preference)
if (!in_array($preference, [
Prefer::FIRST,
Prefer::LONGEST,
Prefer::SHORTEST,
])) {
throw new DomainException('Invalid preference `' . $preference . '`');
}
public function pushPreference($preference)
self::assertPreference($preference);
$this->preference[] = $preference;
public function popPreference()
array_pop($this->preference);
public function getPreference()
return end($this->preference);
vanderlee /
Comprehend
