vendor/khanamiryan/qrcode-detector-decoder/lib/common/AbstractEnum.php

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<?php

namespace Zxing\Common\CharacterSetEci\AbstractEnum;

use \Zxing\NotFoundException;
use ReflectionClass;
/**
 * A general enum implementation until we got SplEnum.
 */
final class AbstractEnum
{
    /**
     * Default value.
     */
    const __default = null;
    /**
     * Current value.
     *
     * @var mixed
     */
    protected $value;
    /**
     * Cache of constants.
     *
     * @var array
     */
    protected $constants;
    /**
     * Whether to handle values strict or not.
     *
     * @var boolean
     */
    protected $strict;
    /**
     * Creates a new enum.
     *
     * @param mixed   $initialValue
     * @param boolean $strict
     */
    public function __construct($initialValue = null, $strict = false)
    {
        $this->strict = $strict;
        $this->change($initialValue);
    }
    /**
     * Changes the value of the enum.
     *
     * @param  mixed $value
     * @return void
     */
    public function change($value)
    {
        if (!in_array($value, $this->getConstList(), $this->strict)) {
            throw new Exception\UnexpectedValueException('Value not a const in enum ' . get_class($this));
        }
        $this->value = $value;
    }
    /**
     * Gets current value.
     *