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<?php declare(strict_types=1);
/*
* This file is part of PHPUnit.
*
* (c) Sebastian Bergmann <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace PHPUnit\Util;
use function in_array;
use function sprintf;
/**
* @internal This class is not covered by the backward compatibility promise for PHPUnit
* @psalm-immutable
*/
final class VersionComparisonOperator
{
/**
* @psalm-var '<'|'lt'|'<='|'le'|'>'|'gt'|'>='|'ge'|'=='|'='|'eq'|'!='|'<>'|'ne'
*/
private $operator;
public function __construct(string $operator)
{
$this->ensureOperatorIsValid($operator);
$this->operator = $operator;
}
/**
* @return '!='|'<'|'<='|'<>'|'='|'=='|'>'|'>='|'eq'|'ge'|'gt'|'le'|'lt'|'ne'
*/
public function asString(): string
{
return $this->operator;
}
/**
* @throws Exception
*
* @psalm-assert '<'|'lt'|'<='|'le'|'>'|'gt'|'>='|'ge'|'=='|'='|'eq'|'!='|'<>'|'ne' $operator
*/
private function ensureOperatorIsValid(string $operator): void
{
if (!in_array($operator, ['<', 'lt', '<=', 'le', '>', 'gt', '>=', 'ge', '==', '=', 'eq', '!=', '<>', 'ne'], true)) {
throw new Exception(
sprintf(
'"%s" is not a valid version_compare() operator',
$operator
)
);
}
}
}
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