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| Current File : /var/www/html/shardahospital.org/pdms/php-qrcode/lib/Common/AbstractEnum.php |
<?php
namespace Zxing\Common;
use ReflectionClass;
/**
* A general enum implementation until we got SplEnum.
*/
final class AbstractEnum implements \Stringable
{
/**
* Default value.
* @var null
*/
public const __default = null;
/**
* Current value.
*
* @var mixed
*/
private $value;
/**
* Cache of constants.
*
* @var array<string, mixed>|null
*/
private ?array $constants = null;
/**
* Creates a new enum.
*
* @param mixed $initialValue
* @param boolean $strict
*/
public function __construct($initialValue = null, private $strict = false)
{
$this->change($initialValue);
}
/**
* Changes the value of the enum.
*
* @param mixed $value
*
* @return void
*/
public function change($value)
{
if (!in_array($value, $this->getConstList(), $this->strict)) {
throw new \UnexpectedValueException('Value not a const in enum ' . $this::class);
}
$this->value = $value;
}
/**
* Gets all constants (possible values) as an array.
*
*
* @return array
*/
public function getConstList(bool $includeDefault = true)
{
$constants = [];
if ($this->constants === null) {
$reflection = new ReflectionClass($this);
$this->constants = $reflection->getConstants();
}
if ($includeDefault) {
return $this->constants;
}
$constants = $this->constants;
unset($constants['__default']);
return $constants;
}
/**
* Gets current value.
*
* @return mixed
*/
public function get()
{
return $this->value;
}
/**
* Gets the name of the enum.
*
* @return string
*/
public function __toString(): string
{
return (string)array_search($this->value, $this->getConstList());
}
}
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