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87 lines (68 loc) · 1.5 KB
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<?php declare(strict_types = 1);
namespace PHPStan\Reflection;
class PassedByReference
{
private const NO = 1;
private const READS_ARGUMENT = 2;
private const CREATES_NEW_VARIABLE = 3;
/** @var self[] */
private static $registry = [];
/** @var int */
private $value;
private function __construct(int $value)
{
$this->value = $value;
}
private static function create(int $value): self
{
if (!array_key_exists($value, self::$registry)) {
self::$registry[$value] = new self($value);
}
return self::$registry[$value];
}
public static function createNo(): self
{
return self::create(self::NO);
}
public static function createCreatesNewVariable(): self
{
return self::create(self::CREATES_NEW_VARIABLE);
}
public static function createReadsArgument(): self
{
return self::create(self::READS_ARGUMENT);
}
public function no(): bool
{
return $this->value === self::NO;
}
public function yes(): bool
{
return !$this->no();
}
public function equals(self $other): bool
{
return $this->value === $other->value;
}
public function createsNewVariable(): bool
{
return $this->value === self::CREATES_NEW_VARIABLE;
}
public function combine(self $other): self
{
if ($this->value > $other->value) {
return $this;
} elseif ($this->value < $other->value) {
return $other;
}
return $this;
}
/**
* @param mixed[] $properties
* @return self
*/
public static function __set_state(array $properties): self
{
return new self($properties['value']);
}
}